RussianPatents.com
|
Ice cover destruction method. RU patent 2454503. |
|
FIELD: blasting operations. SUBSTANCE: method involves supply of gas-air mixture under lower surface of ice cover, and its explosion. At that, gas-air mixture is supplied to a groove made from lower surface of ice cover. Besides, a float with detonator with wireless control is installed in the above groove. EFFECT: improving destruction efficiency of solid ice cover, surface area of ice cover, on which explosion of gas-air mixture acts. 1 dwg
|
Drying method of block to be exploded during direct coal extraction technology / 2452859 Block to be exploded is drilled around the perimeter of its connection to rock mass by means of a row of wells in 3-4 metres. At that, during preparation for drilling and explosion loosening the well rocks in the row are drilled to the depth below the coal formation through the distance excluding the formation destruction during explosion of row by means of base charge. |
Method to destroy ice cover / 2452812 Method includes installation of explosive charges under ice and their by-turn blasting with a time interval equal to the time of flexure-gravity wave travelling from an area of blasting of the previous charge to an area of blasting of the next charge. Explosive charges are installed above an ice cover and blasted simultaneously with blasting of charges installed under the ice cover. Prior to installation of explosive charges wind speed and direction, underwater currents and ice field drifts are measured, ice thickness is identified. Explosive charges are installed to generate a direction of impact wave propagation to opposite sides from an area of location of a marine facility of business operations. |
Method of blast-hole drilling ensuring preset extent of blast rock grinding / 2450242 Method of blast-hole drilling ensuring preset extent of blast rock grinding includes drilling of explosive wells at the distance between them, depending on detonating characteristics of explosives, physical and technical properties of a rock massif, parameters of its cracking, their charging and explosion. Explosive wells are charged with explosives with specific consumption per m3 of blast rock in amount determined with account of explosive energy losses as charge explosion products expand in a well volume occupied with the charge, and also with account of losses related to the extent of the specific explosive detonation completeness in the well of the specific diameter, which are introduced into a calculation expression for a coefficient of relative operability of the applied explosive. |
Method to form multicharge in drowned well / 2449241 In the method to form charges in drowned wells, including drilling of wells, their filling with explosives and a plug from inertial materials, a multicharge is formed in wells filled with water, made of two different types of hose explosive charges. The main hose explosive charge with detonation speed corresponding to the speed of stress wave propagation in surrounding rock and weight of 75…80% from total mass of the multicharge is placed vertically along the well axis. The second hose explosive charge with high speed of detonation exceeding the speed of stress wave propagation in a rock massif and weight of 20…25% from the total mass of the multicharge, is placed along the spiral around the first hose charge, with a pitch of one turn along the vertical line equal to two well diameters. Linear initiation of the explosive multicharge is carried out simultaneously along the entire length of the well with a detonating chord with a charge of 40 g/m. |
Method of ore and rock breakage in development of solid mineral deposits / 2449240 During performance of drilling and blasting works in the lower part of each explosive well a bottom charge is arranged, on the outer surface of which there is a circular cumulative groove arranged, the top of which lies in the horizontal plane, which separates the volume of the bottom charge in two and matches the plane of a working site of an open pit ledge or a bottom of an underground stope. The value of well subgrade drilling is accepted as equal to the half of the cumulative groove base width. |
Method for explosion of rocks with solid inclusions / 2443970 Inclusions may be represented by layers of hard rocks, various lenses and other inclusions, such as permafrost (eternal frost) in less hard enclosing rocks. Explosive charges in additional shortened wells are placed at the level or below the soil of hard inclusions and are exploded with moderation relative to charges in the main wells. The proposed invention makes it possible to execute efficient grinding of solid inclusions that are previously softened by explosion of charges in the main wells, due to dynamic effect of explosive gases from explosion of charges in additional wells at the lower part of inclusions. |
Method for forming hose charge in wells / 2443965 Method for forming hose charge in wells involves well drilling, arrangement of hose charge in it and stemming by means of inert materials. At that, hose charge is made in the form of a spiral wound on thin-wall perforated plastic pipe, with winding pitch equal to 4.0…5.0 diameters of hose charge. Hose charge and detonating cord is attached to thin-wall perforated plastic pipe. After the assembled structure is arranged in the well, cavity of the pipe and gaps between coils of hose charge are filled with water to the level of hose charge and the well is stemmed with inert materials. |
Method for obtaining a preset crushing ratio of fissured mountain mass and the required coefficient of heading advance per round to shot holes length ratio / 2442957 FIELD: mining SUBSTANCE: method comprises shot hole or bore-hole drilling, loading them with explosive material so that the bottom part of the shot hole the explosive material density or energy concentration would exceed the one in the wellhead of the shot hole. The mass of explosive material charge in the bottom part of the shot hole is calculated mathematically, depending on the line of least resistance value, the diameter of explosive material charge, fissure parameters and physical and technical mountain mass parameters, the rock pressure and detonation velocity of the explosive material. EFFECT: enhanced efficiency and safety of drilling and blasting operations alongside with ore beneficiation efficiency. 1 dwg, 1 dwg |
Suspended well stem / 2441197 Suspended well stem comprises flat elements and an elastic link. At the same time flat elements are made as two hingedly joined half-discs joined to each other, length of each equals 0.55-0.7 dw, and width - 0.65-0.9 dw. At one side each element is rounded, following the well circumference. A rope is fixed to the hinged joint, so that the hinged joint is arranged at the bottom. |
Method of processing materials / 2440226 Invention relates to surface processing by shock wave and may be used in, for example, shock wave hardening, blast welding and liquid-phase sintering. At least one working jet is formed for be forced into chamber with the mix of liquefied propane and air, and directed to material surface. Electric pulse is sent to said working jet to cause electrothermal blast that allows propagation of shock wave in aforesaid mix to generate processing force on material surface. |
Method of driving ice away from mooring facilities / 2453656 Proposed method comprises mounting pump on berth to created jet flows directed from mooring facilities toward harborage. For this, manifold with branch pipes whereto water is forced by pump is arranged on wharf below minimum navigation water level. Pump suction pipeline is downed into pit made on harborage bottom. Dredger with pressure pipeline connected with manifold may be used as aforesaid pump. |
Method to weaken monolith of river ice cover and device for its realisation / 2452813 Method consists in installation of modules in an ice cover by means of their placement prior to river freezing, with subsequent freezing-in of modules into ice as the river freezes. Besides, the module dome is installed above the water surface, and the lower end of the module is below the level of the expected ice cover. The module is filled with air via an air duct attached to a tight dome of a module, at the open mechanical valve, afterwards the valve is closed. At the same time, whenever a lane is produced under influence of climatic factors, by opening the mechanical valve, air is released from the module with filling of its cavity with water from lower layers. The method is realised by means of a module comprising a vessel installed on bottom supports with arrangement of its ends outside the borders of the ice monolith, and a tight dome. An air duct with a mechanical valve is connected to a dome. The module is arranged in the form of a nozzle with a downward expansion. |
Method to destroy ice cover / 2452812 Method includes installation of explosive charges under ice and their by-turn blasting with a time interval equal to the time of flexure-gravity wave travelling from an area of blasting of the previous charge to an area of blasting of the next charge. Explosive charges are installed above an ice cover and blasted simultaneously with blasting of charges installed under the ice cover. Prior to installation of explosive charges wind speed and direction, underwater currents and ice field drifts are measured, ice thickness is identified. Explosive charges are installed to generate a direction of impact wave propagation to opposite sides from an area of location of a marine facility of business operations. |
Device to break ice during ice drifting / 2445421 Device comprises a support site, supply gas lines, a spark gap contacting with a cable. On the support site there is a tubular rod fixed hingedly as connected to gas lines and equipped with a return mechanism, a hook of a position fixator and a spark gap fixed at the rod's end. The support site is equipped with a protective fairing, anchors and a grip of the position fixator made in the form of a rigid bracket and an elastic latch equipped with tension rope, fixed on the support site. At the same time the tubular rod is made in the form of a packet of pipes connected with supply gas lines via flexible nozzles, an air header and a flammable gas header, and at the outlet of the pipes packet the latter are equipped with check valves. The packet of pipes is made of pipes with identical diameter fixed with braces, at the same time three pipes are for flammable gas, and two - for air. The return mechanism is made in the form of two twist springs with hooks fixed on the brace and on the support site. The spark gap is made as an elastic steel ruler with connectors fixed in perforations of the latter having electrodes of the supply cable. |
Method to eliminate ice clogging that closes river from one coast to opposite one and raising water level in river / 2440458 Method includes filling an explosive substance under ice clogging on the river bottom in the specified area and simultaneous explosion of the entire explosive carried out at the specified level of water in front of the clogging and in the volume sufficient to develop disturbance that changes into an elastic wave in water that impacts the clogging and then puts the clogging first into oscillating motion and then into the motion along the river. At the start of the work a section of the coast is identified, which at least near the head part of the clogging has a coastal depth that is deeper than the coastal depth near the head part at the opposite coast. Filling of the explosive substance is carried out at the specified depth along the specified section of the coastal line of this identified section, afterwards the entire explosive substance is simultaneously exploded. Simultaneously with putting the clogging into oscillating motion, the head part of the clogging is exposed to firing practice with live shells. |
Device to erect protection of marine engineering structure supports / 2431016 Device comprises a protective unit in the form of a banding structure that embraces a support of a marine engineering structure. The space between the support and the banding structure wall is filled with liquid that has low freezing temperature. The device is also equipped with a refrigerating plant, pipes of which are arranged in the space between the support and the wall of the banding structure. The banding structure is installed in the zone of the external ice action of alternating loads at supports. |
Device for protecting lane of dredges and dredge ships against freezing / 2424399 Device refers to mining industry, oceanology and other branches of national economy, which deals with execution of works during winter period, and can be used for protection of the lane against freezing. Device consists of heat insulating coating located on water surface of the lane. Heat insulating coating is made in the form of cylinders of similar length, which have the possibility of rotation around its axis. Cylinders with larger diameter are located in upper row, and those with smaller diameter are located in lower row. Axes of cylinders of lower and upper rows are hinged to each other by means of rods. Cylinders of upper row are made by means of alternation next but one with weighing of axes. |
Device to open ice cover / 2422765 Device comprises an explosive charge installed under an ice cover and a blasting system. The explosive charge is equipped with a floating chamber of a streamlined shape filled with gas or other material, density of which is below water density. The device is arranged with the possibility of its fixation between the ice cover and the explosive charge at the distance L defined according to the formula. The explosive charge is connected to a float chamber via a mechanical element, which ensures increasing the distance between them in a working position. The explosive charge surface facing the float chamber is made of a convex shape. The float chamber is equipped with a unit of engagement to ice. The float chamber volume is selected based on conditions. |
Method for canal laying in ice cover / 2422321 Invention relates to icebreaker navigation and concerns technique of ice breaking operations and clearing water bodies of ice cover. Method of canal laying in ice covers consists in that an explosive agent from vessel board is delivered via canal route to ice field ahead of the vessel at safe distance, and then the next area of ice field is disrupted by explosion. As explosive agent, combustible materials crushed to suspending in air are used. These materials are dispersed over ice field area to be disrupted in close to stoichiometric ratio with air and using proximity fuses. |
Device for protecting lane creepers and dredgers from freezing / 2421571 Device consists of heat-insulating structural elements located on water body surface. Heat-insulating elements are performed in a form of cylinders of the same length and diametre located close to each other with end face orientation in one plane parallel to creepers and dredgers longitudinal axis. Inside the cylinders along longitudinal axis there located is rigid axis with protruding ends that hinged to rods connected to axes of neighbouring cylinders. The rod ends are attached to creeper or dredger pontoon, the opposite ends are drilled into lane edge. |
Method for destruction of ice or soil cover / 2246693 The method consists in placement of parachute systems with ammunition on the flight vehicle, their delivery to the preset point, release and blast of ammunition. Elongated flexible explosive charges with initiating devices with a preset delay time connected with one end to penetrators, and with the other end - to the parachutes, assembled in packing cases, are used as ammunition. After the release, the parachute systems turn the flexible explosive charges to the rectilinear position with the penetrators down, separate them from the parachute systems, and the initiating devices are systems, and the initiating devices are remotely cocked. |
© 2013-2014 Russian business network RussianPatents.com - Special Russian commercial information project for world wide. Foreign filing in English. |