Method of horizontal radial drain hole constructing in hard rocks
FIELD: mining; construction.
SUBSTANCE: method of horizontal radial drain hole constructing in hard rocks includes vertical shaft sinking and drilling from it horizontal radial drain hole and constructing from its bottom additional vertical shaft. Using both shafts along the full length of horizontal radial drain hole it is located string camouflet charge. After charge explosion there are formed horizontal radial drain hole with area of bund fracturing and then on one side of newly formed horizontal radial drain hole there is mounted surface casing with closer and draining, and on the other - choke. On drained territory there is installed at least one hydro-supervisory well.
EFFECT: reduction of drill footage; reducing of horizontal radial drain hole breakingin terms; rising of its interception ability and ability to make an attendance for dewatering drained territory.
3 cl, 2 dwg, 1 ex
The invention relates to mining, construction and is intended for use in the construction of drains and drainage collectors in hard rock.
At different stages of development of built-up areas and industrial sites are used in horizontal and radial drains.
Known "Way to create drainage in the conditions of permafrost soils" (AS the USSR №1122778, publ. 1984.11.07). Along the constructed drains are drilling a series of vertical wells to a depth exceeding the capacity of permafrost soils, and form a zone of dense fracturing through camouflage explosion elongated explosive substances within the drains along the entire length of the well. The explosion on the highway constructed drains be a continuous zone of fracture.
The disadvantage of this method is the large amount of Assembly and dismantling, shipping explosives and other materials, the high cost of drilling for the construction of vertical wells, the periodic nature of the change in cross-section formed by horizontal drains across the road.
Closest to the proposed invention is a method of construction of the radial drainage, including the sinking of the vertical shaft and the drilling of the horizontal radial drainage wells. When drilling into a solid (the local or half-rocks) rocks constructed first bore, which is then drilled at the required diameter (Reference drainage rocks. Ed. Iscancel - M. Nedra, 1984, str, 417-421).
The disadvantages of this method are:
- lack of Park and ride capacity horizontal radial drainage wells, i.e. low yield of well drained site;
- drilling of horizontal radial drainage hole to the required diameter to provide the necessary drainage drained site increases the costs of drilling and extend the terms of the construction of the well.
The objective of the invention is to develop an effective and economic method of construction of the horizontal radial drainage wells in hard rock, raising its intercept capability.
To solve this problem we propose a method of building of horizontal radial drainage wells, including the sinking of the vertical shaft and the drilling of the horizontal radial drainage wells, and the bottom horizontal radial drainage wells construct additional vertical shaft, and using both the trunk, along the entire length of the horizontal radial drainage wells place corded, camouflage charge, by blasting which form a horizontal radial drainage hole area CPF who's fracture. At the mouth of the newly formed horizontal radial drainage wells set the guard with locking device and the drain, and the bottom stub. In addition, on the drained site put no less than one gidroobladnannya well.
Distinctive features of the proposed method is that:
- the bottom horizontal radial drainage wells construct additional vertical shaft, using it and the first vertical shaft, place the corded, extended the full length of the borehole, camouflage charge, thereby decreasing the period of commissioning of horizontal radial drainage wells;
- corded, extended the full length of the borehole, camouflage charge allows in a short period of time extending well and get horizontal radial drainage hole in the solid rock, at the same time to increase due to the explosion fractured rock surrounding the well, thereby to increase Park and ride capacity, and also to reduce the cost of its construction.
at the mouth of one side of the newly formed horizontal radial drainage wells, conductor with locking device and the drain, and the other stub, can reduce the duration of the commissioning of horizontal radial drainage borehole;
- install the CA on the drained site not less than one hydronavigational well allows you to monitor the drying process of this territory.
The proposed method is illustrated in the drawings, which depict:
figure 1 - the stage in the horizontal radial drainage hole and the cord that extended the full length of the borehole, camouflage charge;
figure 2 - the final phase of construction horizontal radial drainage wells in hard rock.
The claimed method of construction of the horizontal radial drainage wells in hard rock is as follows.
On the drained site 1, presents hard rock 2, plan route 3 horizontal radial drainage wells (figure 1). Track 3 can be performed as strictly horizontal and inclined up to 10° to the horizon. At the beginning of track 3 at a given depth construct a vertical shaft 4. As the vertical shaft 4, you can use existing at the beginning of track 3 natural slopes, terrain countryside, Board quarries or existing mine workings and pits. Of the vertical shaft 4 is realized by drilling 5, oriented along the 3. On the bottom 6 of the bore 5 construct additional vertical shaft 7 at the same depth as the first vertical shaft 4. Using both vertical shaft 4 and 7, the bore 5 is placed corded, extended to the entire borehole 5, camouflet charge 8. The radius of the constructed horizontal the th radial drainage wells 9 correlated with the consumption of explosives per 1 m length, determined by the formula
where CCC- consumption of explosives;
R is the radius of the zone of destruction and section horizontal radial drainage wells is determined based on the expected flow of groundwater.
g - specific consumption of explosives for the normal loosening rocks.
Carry out blasting camouflage charge 8, resulting in a besfiltrovye, same cross-section horizontal radial drainage hole 9. Along the formed bore 9 in the solid rock 2 cracks 10, increase Park and ride capacity groundwater (figure 2). After the explosion, carry out the necessary measures for the safety of work: air horizontal radial drainage hole and vertical trunks, assign contact with water and other On the mouth 11 of the horizontal radial drainage wells 9 installing the conductor 12 with a locking device 13 and the drain 14, and the bottom 6 of the horizontal radial drainage bore 9 of the plug 15. Horizontal radial drainage hole 9, constructed in hard rock, ready for use.
On the drained site 1) for evaluation of drainage, that is, lowering of groundwater levels, put no less than one gidroobladnannya well (not shown).
Practical applicability statement the aqueous method of construction of the horizontal radial drainage wells in hard rock shown in the following example of a specific implementation.
The village is situated on the area of development of solid rocks are represented by granites, which are in the upper weathered zone. Granite everywhere covered loam capacity up to 4,0-5,5 m Granites and loam aquifer and are the coefficients of the filter, respectively, 2.8 m/day and 0.6 m/day, and General statistical groundwater level is located at a depth of 1.2-1.5 m from the surface. Track horizontal radial drainage wells are laid along the village street.
Construct a vertical shaft depth of 6,5-7,0 m From the vertical shaft are drilling horizontal radial drainage hole with a diameter of 93 mm to a depth of 300 m At the bottom of the drilled wells construct a second vertical shaft of the same depth. As explosives (he) are used corded, extended the full length of the borehole camouflage charge representing a flexible plastic hose with a diameter of 50 mm with wall thickness of 1.5-2.0 mm Charging is carried out by pulling charge from one vertical shaft in the other across the hole.
Consumption of explosives determined by the formula
where R is the radius of the zone of destruction, g - specific consumption of explosives for the normal loosening drained rocks.
As a result of the explosive charge received besfiltrovye, od is nakiwogo section, horizontal radial drainage hole, the radius of the zone of destruction was ≈0.35 m, the consumption of explosives equal to ≈60 kg. For organized drainage water wellhead equipped with a conductor, a shut-off device and the drain, and the bottom stub. The time structure is 12 days.
Commissioning of horizontal radial drainage wells in the village were allowed to drain strip width of 180-200 m and ensure the normal operation conditions of basements of buildings and structures.
As can be seen from the above example, the claimed combination of features allows you to significantly reduce the amount of drilling, reduce the time of commissioning of horizontal radial drainage wells, and also to increase Park and ride capacity and monitor drained drained area.
1. The method of construction of the horizontal radial drainage wells in hard rock, including the sinking of the vertical shaft and the drilling of the horizontal radial drainage wells, characterized in that the bottom horizontal radial drainage wells construct additional vertical shaft, and using both the trunk, along the entire length of the horizontal radial drainage wells place corded camouflage charge, by blasting which form a horizontal beam of the first drainage hole zone of dense fracturing.
2. The method according to claim 1, characterized in that after the explosion, on one side, the newly formed horizontal radial drainage wells, install the guard with locking device and the drain, and the other stub.
3. The method according to claim 1, characterized in that on the drained site put no less than one gidroobladnannya well.
FIELD: cleaning or keeping clear the surface of open water by blasting.
SUBSTANCE: ice breaking device comprises explosive gaseous mixture generator, electric pulse generator and explosion tank. Explosion tank is made as roll of tubular gas-tight shell having outer surface provided with fastening eyes and is connected with explosive gaseous mixture generator by the first end thereof. The second explosion tank end is sealed. Pyro-igniters are arranged inside explosion tank so that pyro-igniters are in contact with electric conductor passing to electric pulse generator through gas-supply hose. Rip cord is secured to exterior explosion tank surface. Rip cord may pass in fastening eyes and is provided with fixer connected to one end thereof. Ballast weight is arranged inside roll.
EFFECT: increased efficiency of explosion energy usage, decreased labor inputs and blasting work costs, increased capabilities and blasting work usage for ice blanket breaking, as well as improved ecological and operational safety.
5 cl, 5 dwg
FIELD: provision of safe service of engineering structures in the conditions of their icing.
SUBSTANCE: the method consists in action of an explosion of a cloud of fuel-air mixture on the structure that covers the ice coated structure or a part of it. Ignition explosive charge with mass d=αTex/m, kg in the trinitrotoluene equivalent are placed in the area of spraying with density σs.c.h3>m≥σih3, piece/m, where σi -the strength of ice adhesion, MPa; σs.c. - the maximum permissible pressure on the structure components, MPa; h-the mean thickness of ice coating, m; T-the fuel ignition temperature, К; α - the rated coefficient of ignition of the fuel-air mixture by the air shock waves, and connected to the circuit of simultaneous blasting. After that the mass of liquid fuel M=0,23sρN/n, kg in a mix with a dye is sprayed, where S-the stoichiometric concentration of fuel; ρ- the air density in the area of operations, kg/cu.m; N-the quantity of the placed ignition charge, pc; and at a visual observation the electroblasting circuits is closed at the instant, when the cloud of the fuel-air mixture overlaps the ignition charge. Fuel is sprayed from sprayers distributed near the structure and connected to one air compressor. Thermit is used as a dye.
EFFECT: enhanced efficiency and reduced labor content at cleaning of structures from ice coatings.
FIELD: hydraulic structure safety, particularly to prevent drifting ice formation impingement upon underwater structure.
SUBSTANCE: method involves breaking drifting ice formations into fragments having dimensions providing fragment immersion in water for depth less than admissible immersion depth for floating objects moving over underwater structure set from regulations. For single-stage drifting ice formation breakage well pattern is formed in ice. Then short-delayed well pattern blasting is carried out. Charge put in each well is selected to provide crack zone in ice extended up to lower border of drifting ice formation massif and to provide jointing of adjacent cracks generated during separate explosions. For that distance between wells along blasting chain line delay is to be equal to double depth of initial drifting ice formation immersion in water.
EFFECT: decreased labor inputs for underwater structure protection, decreased technical and ecological risks associated with ice action on underwater structure.
FIELD: cleaning or keeping clear the surface of open water, particularly blasting works to prevent ice jams.
SUBSTANCE: method involves supplying explosion gaseous mix in gas-tight shell arranged under ice blanket by alternate air and combustible gas injection; initiating gaseous mix explosion. Holes are preliminarily drilled in ice blanket in direction transversal to river bed so that the holes are equally spaced one from another. Stream velocity is measured in each hole to determine kinetic energy of river stream. Then kinetic energy distribution along hole sections is plotted and area corresponding to selected ice blanket breakage zone width is determined in area characterized by maximal kinetic energy density. After that necessary number of holes to be made in zone of gas-tight shells arrangement is specified from ice blanket thickness and gas-air mixture amount enough for explosion for selected ice blanket breakage zone width. The shells are made as sleeves and provided with parachutes and floats with weights. Cuts are formed in ice blanket breakage zone so that the cuts extend for depth equal to half of ice blanket thickness in longitudinal and transversal directions with respect to river bed.
EFFECT: improved ice pieces removal from ice breakage zone due to optimal gas-tight shell location under ice blanket and simplified gas-tight shell installation.
4 cl, 1 ex
FIELD: explosion equipment, in particular, destruction of the ice cover on rivers and basis.
SUBSTANCE: the method consists in delivery of explosive gas mixture under the ice cover with a subsequent initiation of the explosion of the latter. The explosive gas mixture is supplied to an elastic gas-tight shell preliminarily placed under the ice cover with a subsequent ignition of the gas mixture by electric explosion the explosive gas mixture is fed to the elastic gas-tight case alternately dosing the air and the fuel gas.
EFFECT: enhanced productivity in destruction of the ice cover, result and safety of blasting operations, technological effectiveness, reduced cost of operations, provided performance of blasting operations at a smaller distance from bridges and others structures.
3 cl, 2 dwg
FIELD: simulation of conditions accompanying the natural and technogenic catastrophes.
SUBSTANCE: the method consists in accomplishment of explosive transformation of reaction mixture by placement of the reaction mixture into a body with a detonator and supply of the initial impulse from the detonator to the reaction mixture. Used as the reaction mixture are the nitrates and/or perchlorates of alkali and alkali-earth metals in amounts of 10 to 70 percent by mass in a mixture with magnesium or aluminum, or an aluminum-magnesium alloy, or titanium, or silicon, or their combination in amounts of 30 to 90 percent by mass. Rolled paper or plastic, or aluminum alloys, or steel are used as the body material.
EFFECT: provided reproduction of technogenic catastrophes for investigation of the aftereffects of catastrophes in various media on the earth or near space and development of the methods of protection against their influence.
3 cl, 1 tbl
FIELD: shaped-charge action on solid media, in particular, ice masses and emergency objects with the aim of their destruction, applicable for destruction of ice jams, elimination of avalanche-like and mud flow situations, liquidation of aftereffects of natural and technogeneous cataclysms, fires, as well as at production of fire-fighting water reservoirs.
SUBSTANCE: blasting supply has a cover, frame closed by a cover and made in the form of a latticework, propelled substance, explosive placed in the cover, the cover has two layers, pulled up on the latticed frame expansible upwards made of ribs converging in the lower part, the propelled substance is placed between two layers of the cover, an antioverturning is attached to the cover from the top.
EFFECT: enhanced efficiency of the blasting effect on the objects to be destructed.
22 cl, 1 dwg, 6 ex
FIELD: applicable 1) in test equipment for simulation of accidents at ejections of liquefied fuel into the atmosphere; 2) for fight against flying insects (locust).
SUBSTANCE: the system consists of a sealed container, explosive charge for breaking of the container and initiation charge of explosive, in which the charge for breaking up the container is put on one side in the immediate contact with the outer surface of the container, on the other side in the immediate contact with the vessel filled with cooling liquid, the sealed container is filled with liquefied hydrocarbon, the initiation charge of the explosive is positioned outside the container, and a layer of highly dispersed powder of combustible metal, the mass of the explosive charge for breaking up the container makes up about 2 per cent of the mass of the liquefied hydrocarbon, the mass of the cooling liquid exceeds the mass of the explosive charge for breaking up the container approximately by 10 times, the mass of the initiation charge explosive makes up about 2 per cent of the mass of liquefied hydrocarbon, and the mass of the powder layer makes up 1-2 per cent of the mass of liquefied carbon. For analysis of the rate of combustion use is made of the group of the containers with liquefied hydrocarbon described above, positioned at different distance from one another at which a various concentration of fuel in the cloud is ensured sufficient for initiation of its ignition.
EFFECT: simplified process of creation and initiation of the fuel-air cloud, system of fuel-air clouds of various geometry, provided analysis of the influence of the presence of solid disperse particles (dust) on the parameters of combustion of the fuel-air cloud.
3 cl, 1 dwg
FIELD: cleaning or keeping clear the surface of open water.
SUBSTANCE: device comprises explosive charges that are set alternatively above and below ice jam and provided with pickups of vertical movement and devices that provide igniting the charges at the moment when the vertical acceleration vanishes.
EFFECT: enhanced efficiency.
FIELD: cleaning or keeping clear the surface of open water.
SUBSTANCE: device comprises explosive charges that are set on the ice surface. The charges, excluding the first one, are provided with pickups of vertical movement to provide automatic blasting the charges at the moment when they are in the trough of the gravity wave caused by blasting previous charges.
EFFECT: enhanced reliability.
FIELD: mining, particularly to reduce ejection of underground water flowing into mine during mining operations to ground surface.
SUBSTANCE: method involves receiving and collecting of mine inflow, which enters mining zone from cone of depression along mine tunnels; cleaning mine inflow; accumulating thereof in underground water accumulation means and delivering mine inflow into water-bearing seam. Mine inflow is supplied out of cone of depression located outside of mining zone in direction of water-bearing seam depression line to provide water return in operating mine tunnels, wherein distance between lower edge of cone of depression and point of mine inflow supply must be not less than width of mine inflow spreading in water-bearing seam. Mine inflow to be discharged from water accumulation means is supplied to intermediate sump and then is filtered in water-bearing seam due to intermediate sump location in water-bearing seam. Mine inflow is supplied to underground or land-based intermediate sump.
EFFECT: increased efficiency of hydrological regime recovery and improved ecological safety due to landscape conservation and enhanced industrial safety due to elimination of underground gas accumulation in dewatered water-bearing seams.
4 cl, 3 dwg
FIELD: drilling and survey, particularly special methods or apparatus for drilling.
SUBSTANCE: underground system includes drain holes, the first well extending from well drilled from ground surface, mainly from underground excavation interval start to remote end thereof. The system also has a number of side holes extending from the first well. Distance between side hole bottom to well drilled from ground surface may be selected so that it is substantially the same for all side holes to facilitate side hole drilling. Method may also involve uniting two or more drain hole systems within the boundaries of underground zone to provide uniform coverage of full underground zone area. System may additionally have a number of communicating drain hole sub-systems associated with main well drilled from ground surface to reduce ground surface area, which provides access to underground zone.
EFFECT: increased efficiency, provision of uniform coverage of full underground zone area and reduced access area.
54 cl, 10 dwg
FIELD: mining, particularly to prevent underflooding of ground areas to be shifted during underground mining performing.
SUBSTANCE: method involves forming contour trench-like cutoff curtain in ground; creating drainage devices inside the contour and removing water from ground movement trough. The contour trench-like cutoff curtain is arranged along predicted horizontal line of ground surface relief formed after ground subsidence and height mark thereof is higher than that of maximal ground water level in spring. Necessary throughput Q of drainage devices is set on the base of mathematical expressions.
EFFECT: increased safety of underground mineral mining.
2 dwg, 1 ex
FIELD: mining industry, particularly to remove water from deep pits, especially in going to underground excavation in upper part of ore body.
SUBSTANCE: system comprises main pipeline, pumping unit with pumping pipe and power supply members. The system is additionally provided with lowering-and-lifting device arranged on pit side and tightening device provided with rope. The first rope end is connected with tubular case in which submersed pumping unit is installed. Submersed end of the case has throughput orifices for liquid passage. Through orifice formed at outlet case end communicates with pumping pipe orifice, which in turn is connected with inlet end of the main pipeline through connection pipe and connection flange. Outlet end of the main pipeline is secured in the lifting-and-lowering device.
EFFECT: reduced material consumption and increased efficiency of water drainage from water-filled deep pits.
FIELD: mining, particularly for drawing-off gases from coal bed simultaneously with water removing from coal bed.
SUBSTANCE: method involves drilling vertical well having cavity from ground surface; communicating vertical well cavity with horizontal drain holes used for gas recovery from coal bed.
EFFECT: provision of access to large underground area from ground surface and uniform coverage thereof, increased efficiency of gas production due to increased drainage system area along the strike of coal bed and due to improved well drilling technique.
27 cl, 11 dwg
FIELD: mining industry.
SUBSTANCE: method includes erection of wall, prior reinforcement of rock massif along extraction track by drilling longitudinal and slanting wells and forcing reinforcing cementing solutions into these wells, destruction and cleaning of rocks under protection of cementing cover, erection of permanent support, following reinforcement of contour-adjacent massif by cementation solutions through wells, drilled perpendicularly to mine axis. Draining wells are additionally drilled with delay through cementing layer having length greater than thickness of reinforced rocks zone, to form a draining layer around reinforced cover.
EFFECT: higher effectiveness.
2 cl, 4 dwg
FIELD: oil and gas extractive industry.
SUBSTANCE: method includes use of device providing for manufacturability of assemblage of casing and drilling columns and concurrent drilling by two columns, provided with independent drives, and drilling, by casing column, of non-stable rock solids performed with frequency no greater than one calculated from formula
where Vmec - mechanical drilling speed, m/min, Fr - friction forces against rotation, Ften - friction forces against linear displacement, R - casing column radius, m, α - angle between vectors of directions of linear and rotating movements.
EFFECT: higher effectiveness, higher productiveness, higher reliability.
2 cl, 5 dwg, 1 ex
SUBSTANCE: method of protection of open pits against ground waters includes excavation of a water collecting trench round the perimeter of the open pit; the trench is connected with a tank provided with a pump installation. Construction of an enclosed system of water intake wells round the open pit in the water-bearing stratum at a distance less than the design depression radius. Creation of a water curtain by delivery of ground waters out of the tank into the water intake wells. Ground waters mixed with fine material is fed into the water intake wells, the mix being prepared in the tank provided with a mixing chamber.
EFFECT: reduction of costs for protection of the open pit due to reduction of the volume of ground waters fed into the water intake tank.