Method to protect transit channel against sediments

FIELD: construction.

SUBSTANCE: method includes arrangement of a trench 7 between supply 24 and transit 18 channels, a lock 5 in the form of rigidly fixed webs with excitation of cross circulation of the flow, a sediment-diverting channel 6, a wash hole 4, which is arranged in an inclined manner in direction of the flow, and a rift. A drive is made in the form of a float, traction rods and a drain pipeline. The lock is made in the form of a vertical shield 1, the lower edge of which is arranged below the channel bottom. As water level increases upstream the vertical shield, which serves as a circulating rift, the shield 1 is moved in guides with the possibility of vertical displacement along the height of the trench 7, which is divided into two unequal parts. The lower edge of the vertical shield is equipped with two rigidly connected plates, placed in the bottom part of the trench, the upper (front) 2 of them has length larger than the horizontal lower plate 3. The upper plate 2 provides for the possibility of an inclined jet-directing element towards a sediment-washing opening 4, and the lower plate 3 provides for a protective screen.

EFFECT: higher efficiency of control by reduction of sediments feed into a transit channel and reduction of inefficient water discharge for washing of sediments, provides for the possibility to adjust a hydraulic structure of a flow in a draining trench.

5 cl, 3 dwg

 

The invention relates to hydraulic engineering, namely, devices for capturing sediment in the channels of the mountain foothills.

Known water intake structure, comprising placed in the channel of the retaining structure with a locking device made in the form of automatic limit, nanolipobelle hole (Sable GV Protection structures on the rivers and canals from the sediment. Frunze: Kyrgyzstan, 1968, str).

The disadvantages of the known device is that which the system threshold is fixed directly to the bottom of the inlet channel and leads to complex hydraulic calculation of hydraulic structures re-flow. In addition, with the rapid rise of the water level in the upstream sediment strongly vspuchivajutsja and move in suspension throughout the depth of the filling, which leads to the supply of sediment also over the threshold. Occurred at non-uniform unsteady motion of curvature of the streamlines, pulsation speeds, etc. do not allow the load distribution along the height of not only the variation in turbidity, but with uneven particle size, i.e. in the upper layers can be such fraction of sediment that when uniform motion would never be drawn. The amount of discharge with no deterioration in quality control, sediment cannot be adjusted: pripojenie additional obstacles in the stream in the form of a shutter, occurs the shielding effect and the sediment are not considered in prominic, even though the water is discharged. Attempts to reduce the magnitude of the reset gradual downsizing of the leaching holes good only until the moment when the water velocity is greater than or equal to the velocity of the water in front of the hole, when the decrease in the velocity occurs the effect of "water cushion", similar to the shielding effect. This suggests that it is required to increase the ratio of water more than 0,5 0,55...that is the upper limit of the application of this technological technique. This presupposes the creation of a mandatory pre-defined patterns of flow, ensuring the passage of sediment from nanoepitaxy elements.

For the best excitation circulation and coil currents, the height of the threshold should be variable in its length in the initial (upstream) side of the threshold more end - less. In addition, the height of the threshold should be such that when you pass through the inlet channel design flow there was no flooding of the flow in the inlet channel from the bottom of the threshold, because this channel will decrease the transporting capacity of the flow, and will be deposited sediment, reducing its living section. The dimensions of the leaching of the hole must match the dimensions of the coil currents generated along Monogarova, if it increases the cost of water for washing. However, in low-water period, the transport of these sediments is limited.

In this regard, depending on the amount of water intake design device, must be proposed such a new device, when there is more than one spiral spins at the point of removal of sediment, for example, at the bottom of the rapids. Hence it is necessary to provide the desired supply upper threshold on the estimated maximum water level.

A device that includes a trench, the threshold, the drive, the shutter nansouty channel (USSR Author's certificate No. 655765, CL EV 8/02, 1976).

The disadvantage of this device is ineffective interception of sediment due to the weak development of spiral motion in the tray. In addition, when the partial opening of the shutter requires a large wash water consumption, this lack of reliability even when manually maneuvering the shutter. A stable circulation flow is generated at certain speeds and does not account for a large turbulization of the flow with increasing (changing) of the water level in the inlet channel, as well as at low energy flux, which significantly limits the scope of its application. In the known device the washing hole is located directly in the movable panel, which at minimum content of water in the supply channel located is prohibited on the same level as the bottom of the inlet channel. Because of this (at low water levels), prism sediments sediment does not reach the flushing holes in its maximum displacement. In connection with what is wasteful discharge of irrigation water.

The closest in technical essence to the present invention is a method of protection Nanomolecular structures from debris, sediment, including the supply and transit channels placed between the trench bottom proryvnym hole, the bottom of which is located below the bottom of the supply and transit channels, the shutter consists of two rigidly connected to each other panels with excitation of the transverse circulation flow, nansouty channel, the actuator is made in the form of a float rod, gate, and drain piping (USSR Author's certificate No. 1065525, CL EV 8/02, 1981).

The disadvantages of this method of protection of the transit channel sediment is the low efficiency of removal of sediment from the transit channels, this creates a hydraulic screen before a fixed threshold. A stable circulation flow is generated only under certain flow rates and does not account for a large turbulization of the flow in excess of (changes in) the water level in the inlet channel, as well as at low energy flux, which significantly limits the scope of its application. This in turn leads to unproductive is proryvnym expenses in case of increase in water level upstream of the nominal and does not provide sediment transport, when the water level is less than the nominal. The height of the roller and the intensity of its rotation depends on the height of the threshold and the water level upstream of the structure, which is not always consistent with other elements of the structure in the event of a change in characteristics of the stream. The result is sbinet current and additional turbulization of the flow, leading to degraded performance of the entire structure. The device does not provide for the possibility of regulating the speed of rotation of the fluid directly as when entering the slit trench, and the trench, in the case of change of characteristics of the stream. In the known device the washing hole is located directly in the movable panel, which at minimum content of water in the supply channel is located at the same level as the bottom of the inlet channel. Because of this (at low water levels), prism sediments sediment does not reach the flushing holes in its maximum displacement. In this regard, there is wasteful discharge of irrigation water. Work is also in the process of flushing when a sudden increase in water level upstream of the channel and the opening of the shutter is made of two panels, leads to a large wasteful discharge of water, and the presence of the counterweight only leads to loss of the instability of the shutter. This is because the angle otklonenie is changing, accordingly, changing the moments of force application relative to the axis of rotation of the shutter from both the location of the counterweight, and the water pressure in the upstream channel. Possible jamming of the axis of the gate. It affects you change the height of vertical and horizontal panels of the shutter. The design of the bottom of the trench delays the sediment in the form of large stones, especially of irregular shape due to run in a groove in the back wall of the trench. All this leads to the blockage of the drain line and neobisiidae performance level sensor, as a consequence, the shutter is fully open. Another disadvantage is the instability of the rolling shutter because of the presence of two separate control devices, hard consistent in the process of construction, every time you need to adjust the counterweight on a certain position of the trim button (is self - oscillating process instability), while the axis of the shutter in the flow of water always has the opportunity to clog. The known device cannot effectively remove sediment from the transit channels, this creates a shielding effect and is wasteful discharge of water on the wash load.

The purpose of the invention is improving the efficiency of regulation by reducing the inflow of sediment in TRANS the private channel and reducing wasteful discharge of water on the wash load, and the ability to adjust the hydraulic flow patterns in nanocoated trench.

This objective is achieved in that in the method of protection of the transit channel sediment, including trench is made between the supply and transit channel, the shutter in the form of a rigidly fastened by a plate with the excitation of transverse circulation flow, nansouty channel, washing hole, one of which is inclined in the direction of flow, and the actuator is made in the form of a float rod and the drain line, the threshold, the shutter is made in the form of a vertical shield, the lower edge of which is placed below the bottom of the channel, while increasing the level of water in front of the vertical shield role of circulating threshold, the shield is moved in the guide with the possibility of vertical movement along the height of the trench which is divided into two unequal parts, with the lower edge of the vertical shield is provided with two rigidly connected to the horizontal plates, horse of which has a length greater than the bottom plate is placed in the trench. In addition, horse plate provides the opportunity inclined, which element in the direction nanoprobing holes, and the bottom plate is fixed horizontally and provides a protective shield. When this circulation shield on the top of Croagh the ke has a horizontal visor in the direction towards the downstream flow of water in the supply channel, and horse slant which and the lower horizontal plate is made extending in the direction of movement of the rinsing nanocoated trench and positioned in the cavity of the trench that their side edges are slit is not less than the maximum diameter of the large fractions of sediment between the side walls of the trench, and having outputs toward the bottom of the trench.

In addition, in the bottom of the trench are set corrector flow rate, one of which is mounted flush with the bottom of the inlet channel having a bevel in the form of a visor, and the other is fixed to the inner middle part of the horse, which plate in the form of curvilinear cross-section of the plates, providing the opportunity of education, which systems. This nanocoated hole at a bottom of the trench is provided with a shutter in the form of a plate with a curved end pointing towards the flushing channel and rigidly connected with a sloped vertical shield from the leaching of the hole.

This embodiment of the method of protection of the transit channel sediment allows, in comparison with the prototype, to automate the process of protection also Nanomolecular structures from blockage by sediment. While the implementation of the protection is differentially: more effectively remove sediment from the transit channels - move ablanovo shield with the possibility of vertical movement in guides on the team floats, configured to support the maximum design elevation of the water level in the channel (overflow), the creation of redistribution of water along the length nanocoated trench through the active transverse circulation, and pressing the bottom of the large drifts in the direction of the flushing holes. This happens when you have a set of the offset flow rate, as well as protection of the transit channel from being hit by sediment from the trench through the openings (slits) of the side edge of the horizontal plate made shielding screen in the presence of the offset flow rate. Trench and plate made in the form of a widening in the direction of movement of the leaching nanocoated conduit in combination with a curved cross-section of the plate, allow to increase the speed and stabilize the mode leakage of the fluid in the washing opening (moving load due to radial circulation flow arising from rotational movement in the trench). The balance of pure water at a differential pressure of the trench is directed through the discharge tube in the transit channel by a threshold that is located at the beginning of the transit channel. This contributes an additional suction effect of the diversion of part of the flow of clean water from the upper side of the rear wall of the trench through the discharge pipe, i.e. the l is Noah protective plate. Thus, the trench remains free from sediment and no unproductive wash water discharge and water savings. This is due to the successive action of the elements placed in the trench, when all loads are concentrated in the zone of influence of the offset flow rate, providing a favorable flow structure when transferring load from one station to another station in nanoshuttle channel. At the same time, the plot of the width of the channel below the bottom of it, the thread is released from the sediment and prevents siltation of their channel. Through the use of two independent helical currents in the trench, the interception of sediments drawn from the discharge channel increases, falling into the trench and then the bend in nanoprobing channel. The absence of a fixed threshold at the end of the inlet channel (before the trench) forms before the vertical shield with visor water drum with a spiral movement of water, which makes the sediment in the hole trench.

The economic efficiency of the proposed method of protection of the transit channel sediment is to combine in one technological cycle of optimal water passes in transit the canal and effective two-step purification of water from sediment.

This performance remedy transit channel from sediment and dam construction, according to the tori, previously it was not known and meets the criterion of "Significant differences".

Figure 1 shows nanosatellite structure view in plan; figure 2 - section a - a in figure 1; figure 3 is a cross - section B-B in figure 1 (along nanoprobing trench).

The implementation of the remedy contains nanosatellites construction including barring device 1 (shield)consisting of vertical, inclined front 2 and 3 horizontal plates. Slant front plane of the plate 2 has a washing hole 4 and the gate 5, is made with a bend on the end in the form of a plate, which improves the conditions of flow in nansouty channel 6. Across the device is made in the form of the shield 1 with the possibility of vertical movement in guides (not shown) in the trench 7 by means of rods 8 and 9 with the hinges 10 and 11 with a screw devices 12 and 13 are connected with the drive of sufficient size floats 14 and 15, located in the float chambers 20 and 21. This vertical movement without offsets and distortions ensured by a system of guides and rollers, located above the maximum water level in the channel (not shown in the figure). Nanocoated trench 7 has a variable cross-section in the form of a rectangular trench, increasing (expanding) in the direction nanocoated channel 16. When this angle side is howling faces equal to the angle of inclination of the front (horse) plate 2 across the device 1. At the bottom of the deepest part of the trench 7, the bottom of her smoothly into nansouty channel 6, and the rear side wall of the trench is arranged in the pipe 17, which provides drainage of water from the back of the volume nanocoated trench 7 in the transit channel 18 for the lower part of the circulation threshold 19. This helps as if the exhaustion part of the flow of clean water from the upper layers of the trench above the horizontal ceiling plate 3 in the transit channel 18. Each of the float chamber 20 and 21 are connected with the inlet channel 24 and the transit channel 18 through the inlet tubes 22 and 23. The output tubes 25 and 26 are connected with nanocoated trench 7, paired with nanocoated channel 6. In the upper part of the partitioning off of the shield 1 is made horizontal visor 27.

The side wall of the trench 7 is provided with a corrector speed of 28, which is its base secured to the visor 29 (bevel of the front wall of the trench), another concealer flow rate 30 fixed to the inner middle part of the slant horse (front) plate 2 in the form of a curvilinear in cross section of a plate curved in the direction nanocoated holes.

Trench 7 divided by width into two unequal sections across the device in the form of shield 1-shield 27, which are placed in the hatchback, which plate 2 and the horizontal cover plate 3, the connection is rigidly United to the lower end of the vertical shield 1 and made in the form of downward and extending across the width of the trench 7 in the direction of the bottom of the leaching holes 4.

Protection nanoregulation construction of dam sediment represents one variation of the method for solving the more General problem of control, sediment on hydraulic structures, namely the dynamic method, which consists in creating specific hydraulic conditions of traffic load.

The need to protect nanoregulation construction of dam sediment is shown as follows. In worker process mode nanosatellites construction allows flow in the transit channel clarified water with a small amount of sediment (through the discharge path of the trench freely discharged wash water with the majority of the sediment).

In cases of high sediment loads in the water source or an abnormally rapid increase occurs the phenomenon of dam sediment. In these cases, there is the development of devices and the need to protect them from debris, sediment, because otherwise nanosatellites facility is unable to perform its basic function as a sediment in large quantities are in transit channel (due to their redistribution over the filling depth in the inlet channel, or in the limiting case of very large size fractions of sediments drawn is damage to the facility itself).

Equipping the op is relatively new systems with structures as sediment devices on channels ensures effective control, sediment and minimum cost of water for flushing sediment and decreases approximately twice the cost means for cleaning sediment. Here bedloads fully washed in nansouty channel 6 at low costs.

The operation of the device is as follows.

Before you start make adjustment facilities. Barring device 1 (shield) with visor 27 provides education in the bottom layer of the thread of the screw roller, transporting sediment from the inlet channel into the input part nanocoated of the trench 7. Further, the flow of water, sediment enters the corrector speed stream 28, which significantly reduces the supply of sediment in transit the canal 18 (none up to ascending currents of water, sediment before barring device 1). The floats 14 and 15 through changes in water level in the watercourse change their position and raise or lower across the device 1 (shield), which are set at the level of a given level in the pools of the channels corresponding to the maximum design flow through the movable vertical Board 1 with the visor 27. However, depending on the difference Z between the water level in the upper and lower pools of the channels 24 and 18, as well as by changing the length of the rods 9 and 10 by a screw device 12 and 13 is set to an appropriate bias across the device 1. Thus, if you raise the water level upstream of the channel is increased and levels in the float chamber, that corresponds to a position across devices 1 (shield) and the opening of the wash nanocoated of the trench 7. While reducing the process is reversed, i.e. the drawdown of the water level in the float and lowering of the vertical shield 1. The volume nanocoated trench 7 redistributed accordingly, increasing in the lower pane, and decreasing in the front and rear areas. The highest water level in the stream corresponds to the largest volume of the lower region nanocatalysis trench 7.

With the increase of water level in the watercourse increases throughput and, accordingly alluvial mode in the direction of increasing. To separate the sediment from the inlet flow of water increases the height of the circulation threshold by raising the vertical partition device 1 made in the form of a shield with visor 27. Expanding the area of influence and, accordingly, increases the intensity of the circulation flow in the upper part of the volume nanocoated trench 7, which considerably extends the class of sediment on the fractional composition, is able to separate from the stream. Variable cross-section of the trench 7 in height in combination with a set of service corrector flow rate 29 provides an increase in the area of the inlet of the trench on stream sediment and internal signicast inclined which horse (front) plate 2 of the offset flow speed 30, made in the form of curvilinear cross-section of the plate and bent towards nanocoated holes, limiting screw in each region of the volume of the trench 7, which excludes the impact on raising the sediment up into the watercourse. Passing through the washing hole and the clearance between the vertical wall nanocoated of the trench 7 and the lateral edges (edge) of the inclined plate which across 2 of the device 1, the stream sediment is expanding dramatically. His energy is reduced and the load inertia accumulate in the bottom of the leaching trench 7 and under the action of the circulation is directed toward nanocoated channel 6. Part of the flow without sediment passes through the clearance (gap) between the rear vertical wall of the trench 7 and the side wall (rib) horizontal cover plate 3 with the partition device 1, are discharged by the pipe 17 in the transit channel 18, with lower circulating threshold 19. This contributes additionally, the suction part of the flow of clean water from the upper posterior wall of the trench 7. Any technological process consists of a set of certain manufacturing operations, each of which describes some aspect of the process. For example, the combat load is performed in two steps: first you need to separate the sediment from the water flow, and then remove them outside the building. In our the m case the separating load is a dynamic way. Therefore, before to know how to exercise, water intake, i.e. what are the structures, which structures, we need to know how to implement it, so that costs were minimal. Hence, the process suggests that the design of the construction and arrangement, it is determined only by the technology (i.e. the combination and sequence of operations) and equipment (i.e. combination of techniques) process.

It should be noted that when pressure mode (when the dimensions of the screw or roller is limited on both sides, for example a bottom threshold and a fixed bottom) barrier for sediment is the body of the screw or roller, the load is almost not penetrate and is not drawn from the outside. They stop in front of the screw and, if the longitudinal velocity vector is small, accumulate in the form of a ridge, rising up until the depth of water on the front of the threshold will not decrease so that the speed on the approach to the threshold will be insufficient to maintain the original dimensions of the screw. When reducing the dimensions of the screw ridge is gradually coming to the threshold and, in the end, it fills up.

Dam of bottom threshold or obstacles are inevitable in all cases, if the load is received by these elements and stop them, will not be transported, i.e. if you will be absent longitudinal is the velocity vector. The more comes to the threshold load, the greater must be the longitudinal velocity vector and Vice versa. When the helical movement is added and the longitudinal velocity of the screw. Its magnitude depends on the magnitude of cost shifting along the length of the threshold, which is achieved by performing a threshold height, variable in length.

When the pressure regime (when the dimensions of the screw is limited to four sides with a vertical arrangement of the screw) the load due to the centrifugal forces to move towards the center of the trench, where the washing hole. In all cases, the complete removal of sediment is possible only if sufficient quantities of water for washing.

The uneven distribution of load along the height of the flow determines the obligation to establish a predetermined flow pattern, ensuring the passage of sediment. So for the best excitation circulation and coil currents height across devices must be variable in its length and varies over the height of the filling stream.

It is important to note that when you pass through the inlet channel design flow there was no flooding of the flow in the inlet channel from the bottom of the trench, as in the channel decreases the transport capacity of the stream, reducing its living section, i.e. must be respected us ovie P i AVG≤h (where h is filling in the inlet channel when the current permit flow is determined by hydraulic calculation; Pi AVG- the height of the bottom threshold in its middle part is defined as the arithmetic mean of Pi startand Pi con.).

In relation to the flushing holes can note the following. The dimensions of the leaching of the hole must match the dimensions of the helical flow formed along the bottom of the trench. The width of the flushing holes must be at least Pi con.and, to ensure Nezavisimosti holes sediment is not less than 1.5...2dpoppy(here dmax- maximum diameter of the sediment). The minimum height of the flushing hole is assigned equal to its width.

Washing the hole with such dimensions provides reliable and uninterrupted operation nanocoated of the trench, and the use of the shutter (the shield), changing the width of the flushing holes. Education in the same trench a few screws improves transport, and removal of sediment in nansouty channel.

The advantage of the proposed method in comparison with the prototype is to expand the control range with improved water quality from sediment, as a certain water level in the channel corresponds to the determined intensity of the circulation flow. All of this contributes zahwah is the load and the direction at the bottom portion of the trench and further, in nanotoday channel through rational design across devices. This means that in nanocoated trench has a special role remain energetic flow through the redistribution of the volume.

The advantage compared to the prototype is in the process of automatic control and reducing wasteful discharge of water for flushing sediment up to 5...10% depending on changes in water level in streams and allows you to more effectively remove sediment from the transit channels 18, not creating hydraulic screen.

The economic efficiency of the proposed method of protection of the transit channel is to combine in one technological cycle of optimal water passes in transit the canal and effective two-step purification of water from sediment.

1. The way to protect transit of the canal sediment, including the implementation of the trench between the supply and transit channel, the shutter in the form of rigidly bonded panels with excitation of the transverse circulation flow, nanocoated channel, washing hole which is inclined in the flow direction, and the actuator is performed in the shape of the float rod and the drain line, and a threshold, wherein, to improve regulatory effectiveness by reducing post is the accumulation of sediment in transit the canal and reduce wasteful discharge of water on the wash load, the shutter is carried out in a vertical shield, the lower edge of which is placed below the bottom of the channel, while increasing the level of water in front of the vertical shield role of circulating threshold, the shield is moved in the guide with the possibility of vertical movement along the height of the trench which is divided into two unequal parts, with the lower edge of the vertical shield provide two rigidly connected plates, horse of which has a length greater than the bottom plate is placed at the bottom of the trench.

2. The method according to claim 1, characterized in that the horse plate provides the opportunity inclined, which element in the direction nanoprobing holes, and the bottom plate is fixed horizontally to provide the protective screen.

3. The method according to claim 1, characterized in that the circulation vertical Board on the top edge is horizontal visor in the direction towards the downstream flow in the inlet channel, and horse-sloping stream directing and lower horizontal plates perform a widening in the direction of movement of the rinsing nanocoated trenches and have thus in the trench that their side edges are slit between the side walls of the trench, the size of which is equal to the maximum diameter of the transported sediment, and having outputs toward the bottom of the trench.

p> 4. The method according to claim 1, characterized in that the bottom of the trench is set the offsets of the flow velocity, one of which is fixed flush with the bottom of the inlet channel having a bevel, and the other is fixed to the inner middle part of the horse, which plate in the form of curvilinear cross-section of the plates, providing the opportunity of education, which systems.

5. The method according to claim 1, characterized in that nanocoated hole at a bottom of the trench is provided with a shutter in the form of a plate with a curved end pointing towards the flushing channel, thus rigidly connected with the inclined vertical shield from the irrigation holes.



 

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4 cl, 6 dwg

FIELD: hydraulic building, particularly barrages or weirs.

SUBSTANCE: structure comprises flexible apron fastened to channel anchors and the first retaining wall installed on the apron with rigid fastening unit. Two additional retaining walls are installed on the apron. The second retaining wall has height exceeding that of other walls and is provided with water discharge orifices arranged in staggered order. Ridge of the third retaining wall is curvilinear. Removable pockets are arranged in front of all retaining walls. Flexible apron parameters may be changed due to shutoff means usage. Method for structure construction involves assembling flexible apron; fixing flexible apron with channel anchors; mounting structure members; arranging channel anchors in the beginning of flexible apron; mounting rigid ties; connecting the ties with channel anchors; securing retaining walls to rigid ties; fixing releasable pockets in front of retaining walls.

EFFECT: increased quality of water cleaning of suspended solids, reduced time of structure erection.

2 cl, 3 dwg

FIELD: hydraulic building, particularly water intakes.

SUBSTANCE: water intake structure comprises spillway dam and water intake with two or more parallel sump chambers. The sump chambers have upper check lock and lower flushing check lock. Sump chamber bottoms are inclined in flow direction. Through section is located near the flushing check lock from lower pool side. The through section has inclination angle exceeding or equal to that of sump chamber bottom. Water accumulation tray is arranged upstream of flushing check lock transversely to water flow direction. Bottom mark of water accumulation lock is above water surface mark during sump chamber flushing. Precipitated drifts are removed from sump chambers by water flows as a result of gate manipulation. Sump chamber bottom inclination is determined from drift transportation condition. Sump chambers are provided with stream-guiding walls.

EFFECT: increased water cleaning quality and reduced costs of water intake structure building.

3 cl, 7 dwg

FIELD: hydraulic building, particularly barrages or weirs.

SUBSTANCE: structure comprises flexible apron fastened to channel anchors and the first retaining wall installed on the apron with rigid fastening unit. Two additional retaining walls are installed on the apron. The second retaining wall has height exceeding that of other walls and is provided with water discharge orifices arranged in staggered order. Ridge of the third retaining wall is curvilinear. Removable pockets are arranged in front of all retaining walls. Flexible apron parameters may be changed due to shutoff means usage. Method for structure construction involves assembling flexible apron; fixing flexible apron with channel anchors; mounting structure members; arranging channel anchors in the beginning of flexible apron; mounting rigid ties; connecting the ties with channel anchors; securing retaining walls to rigid ties; fixing releasable pockets in front of retaining walls.

EFFECT: increased quality of water cleaning of suspended solids, reduced time of structure erection.

2 cl, 3 dwg

FIELD: hydraulic devices, which create silt removal water jet for pressure sewage systems, hydraulic and road maintenance structures.

SUBSTANCE: device comprises rectangular gate installed at culvert inlet so that the gate may partly close culvert cross-section and provide water jet passage between the gate and culvert periphery. Rectangular gate is installed downstream of inlet in water jet direction and is inclined at acute angle α to horizon. The gate is symmetric about vertical axis of culvert cross-section. Upper gate edge is fastened to upper culvert part. Culvert throat for water jet passage is defined by lower and side gate edges and culvert periphery. Rectangular gate is made as concave profile facing water jet by concave surface thereof.

EFFECT: reduced water flow rate necessary for culvert cleaning.

4 cl, 6 dwg

FIELD: hydraulic building, particularly treatment plants to be used for water intake for economic needs.

SUBSTANCE: intermittent flushing settling basin comprises inlet sluice regulator, working chambers, outlet sluice regulator with flushing gallery. Flat sheets rotating about sheet axes are installed in dead space of working chambers so that the sheets are transversal to flushing flow direction. Axes of sheet rotation are secured to side and jet-guiding walls and are located over flushing stream depth. Cuts may be created in lower flat sheet parts.

EFFECT: increased flushing efficiency due to flushing flow impingement upon flat sheets, which press flushing flow to bottom under sheet gravity to improve washing-out of precipitations.

2 cl, 5 dwg

FIELD: hydraulic structures, particularly cleaning device to take water for economic needs, namely sediment base gates, sand sluices and structures for arresting waterborne material.

SUBSTANCE: desilting basin comprises inlet check sluice, working chamber, outlet check sluice with flushing gallery and pressure spill-way. Working chamber width gradually increases in flow direction. Pressure spill-way may be extended and is installed at outlet check sluice inlet upstream of working gate. Impact baffle is installed downstream of working gate in groove provided for emergency gate installation. Extendable pressure spill-way may be vertically arranged or inclined and used as inclined canal.

EFFECT: increased efficiency of taken water cleaning, possibility to take water from upper cleaner stream layers inside basin.

3 cl, 5 dwg

Sump // 2323294

FIELD: hydraulic structures, particularly sediment base gates, sand sluices and structures for arresting waterborne material, namely water cleaning devices used in water intake for economical needs.

SUBSTANCE: sump comprises inlet regulator sluice, working chamber, outlet regulator sluice with flushing gallery and pressure slice spillway installed in outlet regulating sluice in front of working gate. Impact baffle is installed behind working gate in slot provided with emergency gate installation. Pressure sluice spillway may extend in vertical direction or may be inclined and made as chute.

EFFECT: increased efficiency of water cleaning due to pressure sluice spillway usage, which provides water taking from upper clean water layers inside sump.

3 cl, 5 dwg

FIELD: hydraulic structures, particularly intake structures to take water for economic needs.

SUBSTANCE: front-entrance river water intake comprises spillway dam and water intake with two or more parallel setting chambers and transversal water-accumulation gutter having bottom located over water surface during setting chamber flushing. Width of side setting chamber in plane view in stream direction gradually increases in accordance with the equation y=(2h/S2ch)(x2/2), where h is assumed expansion in the end of side setting chamber, Sch -s length of side setting chamber. Side walls of transversal water-accumulation gutter may rotate about fixed axis by means of driving mechanism.

EFFECT: possibility to increase water cleaning efficiency due to transversal water-accumulation gutter wall rotation and possibility of water taking from upper, clean, layers inside setting chambers.

8 dwg

FIELD: water construction purification.

SUBSTANCE: invention relates to hydromechanisation namely to technology of purification and restoration of biological ponds of purification plants. Method of purification and restoration of biological ponds of purification plants includes intake of silt sediments with suction dredge from the bottom of multi-sectional pond and their transportation to sedimentation tanks. Pond is divided into two working areas of treatment, the latter is connected by means of additional input collector with sewage-water supplying canal in direction of sewage water flow motion, the former is blanked off, and construction of ground dam in area of purification is carried out as protective means. After that step-by-step purification of area is performed, for this purpose trench in silt sediments layer is sucked off by suction dredge, after that clarified water is pumped out and discharged into diversion canal. Silt sediments are collected in flowing state and transported either to silt sites or to sedimentation tanks. After that compressed silt sediments are dried by means of active ventilation and removed layer by layer as upper layer dries. After complete removal of silt sediments, base, bed of purified pond section, is restored, and said procedures are step-by-step repeated in successive purification of all sections of first area. Before purification of second working area round dam is erected again in last section of first working area of treatment, separating it from second working area, which is blanked off. First working area is joined to additional output collector with branch duct and opened, after which purification and restoration of sections of second working area are carried out. After finishing purification works ground dam, which was re-erected between two working areas, additional input and output collectors are removed, and second working area of pond is opened for functioning.

EFFECT: ensuring possibility of functioning of purification plants biological ponds without stopping them for purification.

8 dwg, 1 ex

FIELD: construction.

SUBSTANCE: invention is aimed at increased survival rate of larvae and reduced labour intensity of works for growing fish. Device for growing fish consists of pond, pipe for water drain from pond, water line for supply of water into pond and filter. Device is provided with lantern having rigid frame, water drain nozzle and flexible hose, one end of which is connected to nozzle of lantern, and the second one - to nozzle of pipe for water drain. Filter is placed onto rigid frame of lantern to form side walls, bottom, and includes hole for lantern nozzle, which is arranged in lower part of lantern, and length of flexible hose is arranged as equal to 1.2-1.5 of maximum depth of water in pond. Filter may be made of mill screen or in the form of metal wire lattices, at the same time opening for nozzle of lantern will be located on side wall of lattice.

EFFECT: increased survival rate of larvae and reduced labour intensity of works for growing fish.

3 cl, 2 dwg

Water-intake device // 2446255

FIELD: construction.

SUBSTANCE: water-intake device comprises a body 1 with inlet 2 and outlet 3 holes, where accordingly inlet 4 and outlet 5 membrane valves are inserted. In the body 1 there is a filtering element installed, made in the form of bell components. Components are installed on the axis 13 of square section. In the cylindrical part of the components there are half-openings made in the form of half-channels at the angle α of below 90° to the axis 13, forming filtering channels 14. There are springs 15 installed between components. There are slots 21 and ledges 22 for accurate fixation of bell components.

EFFECT: invention makes it possible to increase reliability and quality of liquid treatment, for instance, from livestock drains of cattle complexes and pig complexes, from solid and fibrous structures.

2 dwg

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