CN105507938B - Hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting in drilling - Google Patents

Hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting in drilling Download PDF

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Publication number
CN105507938B
CN105507938B CN201511012857.6A CN201511012857A CN105507938B CN 105507938 B CN105507938 B CN 105507938B CN 201511012857 A CN201511012857 A CN 201511012857A CN 105507938 B CN105507938 B CN 105507938B
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China
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edge
coal
plate
hole
metal
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CN201511012857.6A
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Chinese (zh)
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CN105507938A (en
Inventor
杨明
高建良
张学博
王晓楠
侯三中
郭飞鹏
徐冬冬
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河南理工大学
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Publication of CN105507938A publication Critical patent/CN105507938A/en
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Publication of CN105507938B publication Critical patent/CN105507938B/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F7/00Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25Methods for stimulating production
    • E21B43/26Methods for stimulating production by forming crevices or fractures
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25Methods for stimulating production
    • E21B43/26Methods for stimulating production by forming crevices or fractures
    • E21B43/263Methods for stimulating production by forming crevices or fractures using explosives
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/30Specific pattern of wells, e.g. optimizing the spacing of wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/18Drilling by liquid or gas jets, with or without entrained pellets

Abstract

Hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting in drilling, comprises the following steps:(1)Arrangement drilling;Drilled in seat earth extraction lane to some blasting boreholes of coal seam direction interlaced arrangement and punching, the distance between adjacent punching drilling of blasting boreholes is 3 6m;(2)Explosion;Steel pipe is installed at blasting boreholes mouth, and seal the space between filling steel pipe and blasting boreholes with cement mortar, treat that emulsion is then filled in pvc pipe one end by cement mortar solidification, detonating capsule is installed close to emulsion, then emulsion is loaded close to detonating capsule, the distance between cyclic pac king successively, adjacent detonating capsule is 1m, close to last detonating capsule at sealing filling stemming;The present invention effectively improves gas permeability of coal seam, improves gas pumping effect, is effectively reduced the extraction time, reduces gas safety hidden danger to greatest extent.

Description

Hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting in drilling
Technical field
The invention belongs to technical field of coal exploitation, and in particular to hydraulic flushing in hole combines anti-reflection take out with presplit blasting in drilling The construction method of extraction system.
Background technology
China's energy resources have the bearing features of " rich coal, oil-poor, few gas ".In energy industrial mix, according to BP English Report that China's energy consumption structure sustained improvement in 2013, consumption of coal accounts for primary energy total quantity consumed in oil company of state 67.5%, the new lowest record in history is created, but be higher by nearly 40 percentage points of the current average level in the world.Therefore, in considerable time from now on In, coal remains unchanged the main energy sources in China, and it is national economy sustainable development important leverage to ensure Safety of Coal Mine Production.Due to state Interior 95% coal mining is underground work, and condition of coal seam occurrence is complicated, and most of mine enters deep mining period.Coal seam The increase of buried depth increases the crustal stress in coal seam, gas bearing capacity and gas pressure are also in constantly increase and coal seam and country rock Gas permeability reduces, so as to add the hidden danger of the coal and gas prominent in coal seam.According to statistics, the high methane in the whole nation more than 95% and prominent The coal seam for going out pit mining belongs to low air permeability coal seam, causes that gas pumping coverage is small, the rate of decay is fast, extraction difficulty Greatly, and in most of pit zones do not possess protective coat extracted condition, conventional gas pumping technology can not effectively solve to increase The infiltrative problem of coal seam reservoirs, it is low to directly contribute mine gas extraction rate, " bore, take out, adopting, digging " proportional imbalance.Therefore need The anti-reflection measure of certain release is taken, increases gas permeability of coal seam, gas drainage under suction effect is improved, mining work can be efficiently reduced Face protrudes the generation of accident.
In view of the above-mentioned problems, coal scientific research personnel has carried out extensive experiment and research both at home and abroad, coal is mainly taken at present Release anti-reflection method in layer.Release anti-reflection method has run before to exhaust to drill a hole, deep controlled Short Hole Blasting, coal-bed flooding, waterpower in layer Pressure break, hydrodynamic behavior, hydraulic slotted liner technique, hydraulic flushing in hole etc..But these single method majorities have that drilling construction quantities is big, applies The problems such as work complex procedures and project inputs are high, effective coverage is small, the extraction time is long, it is therefore desirable to take other more to have Effect ground release anti-reflection method, expands effective coverage that drills, improves this coal bed gas extraction effect.
The content of the invention
The present invention is in order to solve weak point of the prior art, there is provided a kind of construction work amount is small, operational procedure is simple, Effective coverage is greatly and hydraulic flushing in hole combines the construction of anti-reflection extraction system with presplit blasting in the drilling of extraction efficiency high Method.
In order to solve the above technical problems, the present invention adopts the following technical scheme that:Hydraulic flushing in hole joins with presplit blasting in drilling Close the construction method of anti-reflection extraction system, hydraulic flushing in hole, which combines anti-reflection extraction system with presplit blasting, in drilling includes hydraulic flushing in hole Device, presplit blasting device and gas pumping device;
Hydraulic flushing in hole device includes drilling machine, drilling rod, drill bit, high pressure water-injection pump, gas dust packing device and water-gas point From device, drilling rod upper end is delivery port, and drilling rod lower end is water inlet, and the delivery port of high pressure water-injection pump is connected with drilling rod water inlet, is bored The clutch end of bar lower end and drilling machine is connected, and drilling rod upper end is fixedly connected with drill bit, and gas dust packing device passes through pipeline It is connected with water-gas separator inlet;
Presplit blasting device includes initiator, steel pipe, lead and pvc pipe, and pvc pipe upper end is inserted into steel pipe, on pvc pipe End is filled with emulsion, 1m is in axial direction provided with detonating capsule in emulsion, pvc pipe is positioned at last Sealing is filled with stemming below individual detonating capsule, and lead stretches out after detonating capsule is connected from pvc pipe lower end;
Gas pumping device includes branch's drainage tube, total drainage tube and gas pumping equipment, and total drainage tube is by all branches It is connected after drainage tube parallel connection with gas pumping equipment, valve is equipped with branch's drainage tube;
Described construction method comprises the following steps:
(1)Arrange bore position;Drilled in extraction lane to some blasting boreholes of coal seam direction interlaced arrangement and punching, explosion The distance between drilling and adjacent punching drilling are 3-6m;
(2)Explosion;Steel pipe is installed at blasting boreholes mouth, and sealed with cement mortar between filling steel pipe and blasting boreholes Space, treat cement mortar solidification emulsion is then filled in pvc pipe one end, close to emulsion install detonating capsule, Then emulsion is loaded close to detonating capsule, the distance between cyclic pac king, adjacent detonating capsule is 1m successively, close to last Sealing filling stemming at one detonating capsule, during emulsion and installation detonating capsule is loaded, using lead by institute Some detonating capsules are connected and lead stretches out from pvc pipe lower end, and pvc pipe fills stemming from filling emulsion one end to sealing The length at place is less than the axial length of blasting boreholes, so far completes dynamite charge operation, then by the pvc pipe after filling along steel pipe Blasting boreholes are sent into, are then connected lead with initiator, starts initiator and carries out explosion;
(3)Preliminary gas pumping;Extract pvc pipe after explosion out, and insert branch's drainage tube, sealing filling branch's drainage tube with Space between steel pipe, then that total drainage tube is in parallel with all branch's drainage tubes, connection gas pumping equipment and total drainage tube, Gas pumping equipment is opened to carrying out preliminary gas pumping in blasting boreholes;
(4)Preliminary hydraulic flushing in hole;Using hydraulic flushing in hole device liquidate one by one hole drilling carry out hydraulic flushing in hole operation, punching bore Seat earth is passed through at the top of the extraction lane of hole, hydraulic flushing in hole is carried out from seat earth every mono- point of 2m, until roof;
(5)Waterpower is cut;Start high pressure water-injection pump, operate drilling machine, move back and forth drilling rod and drive bit, then It is secondary progress hydraulic flushing in hole cutting coal body, drilling around formation crack relief area, after full coal section punches, move back drill bit while Punching, then again Drilling bore bit, move back drill bit again, so circulation is not until punching is produced coal, untill backwater becomes clear, when waterpower is cut, Start water-gas separator to be separated the water cinder flowed out in drilling;Hydraulic flushing in hole hydraulic pressure is 8-15MPa;It is hard to be applicable coal seam Solidity coefficient is within the scope of 0.5-1.5;
(6)Permanent gas pumping;After waterpower cutting operation, high pressure water-injection pump is closed, drilling rod is exited, immediately using water Cement mortar sealing of hole, extraction borehole are connected using wired hose with total drainage tube, carry out gas pumping.
Water-gas separator includes collector casing, first level filtering device, two-stage filter and two resistance coal baffle plates;One Level filter, two-stage filter and two resistance coal baffle plates are arranged at collector box house, and collector casing is a phase To confined space, collector casing top right side is provided with air water slag mixture inlet, and collector casing top left side is provided with pumping Mouthful, collector casing bottom right bottom is sequentially provided with delivery port, cinder outlet and coal slime outlet from top to bottom;
First level filtering device includes the first vibration screen mechanism and the first power-driven mechanism;First vibration screen mechanism position In top in collector box body, the first vibration screen mechanism includes the first stainless steel plate and external form is in the first gold medal of rectangular parallelepiped structure Belong to steel skeleton;On the left of first metal steel skeleton and right side is connected with the first triangle skeleton buffer board by the first stiffness spring, First stiffness spring is provided with a row along the longitudinal direction, and two the first triangle skeleton buffer boards are separately fixed at collector casing top The left side and right side of inwall and the first triangle skeleton buffer board in left side are located at below the first triangle skeleton buffer board on right side;The One metal steel skeleton bottom is provided with the first metal screen for being rectangle of external form, and the first metal screen right edge is close to the first gold medal Belonging to steel skeleton bottom surface right edge, edge length is less than the first metal steel skeleton bottom surface front side edge edge on front side of the first metal screen, First metal screen is provided with the first rubber buffer plate immediately below air water slag mixture inlet;First stainless steel plate is located at Below first metal screen and the first stainless steel plate be arranged in parallel with the first metal screen, the front side edge edge of the first stainless steel plate with Rear lateral edge is each attached on collector cabinet wall, between having between the left side of the first stainless steel plate and collector cabinet wall Gap;First metal steel skeleton bottom left and right side are rotatably connected to the first roller, and two the first rollers are crimped on first Stainless steel plate upper surface;First stainless steel plate left side edge is provided with first and blocked water baffle plate and to block water the first logical of baffle plate close to first Hole, outlet pipe one end is connected with first through hole, the other end of outlet pipe is reached outside collector box body from delivery port;First Power-driven mechanism includes the first motor and the first vibration pull bar, and the first motor is arranged on collector box house, First motor main shaft key is connected with the first drive disk, and the first metal steel skeleton is provided with the first fixed seat, and the first vibration is drawn Bar one end is hinged in the first fixed seat, and the first vibration pull bar other end is hinged on the eccentric part of the first drive disk;
Two-stage filter includes the second vibration screen mechanism and the second power-driven mechanism;Second vibration screen mechanism position Below the first stainless steel plate, the second vibration screen mechanism includes the second stainless steel plate and external form is in the second gold medal of rectangular parallelepiped structure Belong to steel skeleton;On the left of second metal steel skeleton and right side is connected with the second triangle skeleton buffer board by the second stiffness spring, Second stiffness spring is provided with a row along the longitudinal direction, and two the second triangle skeleton buffer boards are separately fixed at collector cabinet wall Left side and the second triangle skeleton buffer board in right side and left side be located above the second triangle skeleton buffer board on right side;Second gold medal Category steel skeleton bottom is provided with the second metal screen that external form is rectangle, and the second metal screen left side edge is close to the second metallic steel Skeleton bottom surface left side edge, edge length is less than the second metal steel skeleton bottom surface front side edge edge on front side of the second metal screen, and second Upper surface is provided with the second rubber buffer plate on the left of metal screen;Two resistance coal baffle plates are located at the first metal screen and the second metal is filtered Between net, two resistance coal baffle plate front side edge edges and rear lateral edge be each attached on collector cabinet wall, two resistance coal baffle plates with Form up big and down small upper and lower penetrating pyramidal structure between collector cabinet wall, the upper port of pyramidal structure is close to the first gold medal Belong to filter screen left side edge, the lower port of pyramidal structure is close to the second metal screen and positioned at the surface of the second rubber buffer plate; Second stainless steel plate is located at below the second metal screen and the second stainless steel plate be arranged in parallel with the second metal screen, and second is stainless The front side edge edge of steel plate and rear lateral edge are each attached on collector cabinet wall, the left side of the second stainless steel plate and collector box There is gap between internal wall;Second metal steel skeleton bottom left and right side are rotatably connected to the second roller, two second Roller is crimped on the second stainless steel plate upper surface;Second stainless steel plate right edge blocks water baffle plate and close to second provided with second Block water the second through hole of baffle plate, and collector lower box is provided with and leads coal slime plate and coal guide plate, the front side edge edge of coal guide plate and rear side Edge is fixed on collector cabinet wall, and the left side edge of coal guide plate leads coal slime plate close to the second metal screen right edge The lower edge that right edge exports close to cinder;The front side edge edge and rear lateral edge for leading coal slime plate are fixed in collector box body Wall, the left side edge for leading coal slime plate are immediately adjacent to below the second through hole, lead coal slime plate right edge exported close to coal slime under Edge;Second power-driven mechanism includes the second motor and the second vibration pull bar, and the second motor is arranged on collector Box house, the second motor main shaft key are connected with the second drive disk, and the second metal steel skeleton is provided with the second fixed seat, the Two vibration pull bar one end are hinged in the second fixed seat, and the second vibration pull bar other end is hinged on the eccentric part of the second drive disk.
First metal steel skeleton bottom is provided with the brush plate on the right side of the first through hole, and brush plate is provided with hairbrush, hairbrush and First stainless steel plate upper surface.
The invention has the advantages that:To be drilled presplit blasting and hydraulic flushing in hole drilling arranged crosswise, first be implemented pre- Explosion is split, then the drilling progress hydraulic flushing in hole to surrounding, explosion can make the loose coal around drilling, produce crack and waterpower Punching forms crack and is mutually communicated, and is formed around coal bed drilling and intersects fracture network, plays the work to the cracks in coal seam network rebuilding With crack further expands, and increases Gas Flow passage, improves gas permeability of coal seam, promotes the desorption and discharge of gas, significantly There is blank tape in reduction.During punching simultaneously, a large amount of ickings are gone out, the surrounding medium for forming cave acutely moves to duct hole direction It is dynamic, the dilatancy of coal body and the opposite displacement of roof and floor occurs, causes the crustal stress in the certain coverage of punching to reduce, Coal seam pressure relief.Both eliminated prominent power, and changed projecting coal bed property again, served in digging operation preventing and treating coal with watt This effect protruded.Compared with prior art, drilling hole amount is few, shortens gas total extraction time, extraction efficiency high, tunnelling With coal work safety, the advantages that coal mining efficiency high.
In summary, the present invention effectively improves gas permeability of coal seam, gas pumping effect is improved, when being effectively reduced extraction Between, gas safety hidden danger is reduced to greatest extent.
Brief description of the drawings
Fig. 1 is that hydraulic flushing in hole combines the structural representation of anti-reflection extraction system with presplit blasting in drilling in embodiment;
The rock gangway that Fig. 2 is the present invention wears hydraulic flushing in hole in layer and combines anti-reflection extraction pipeline schematic diagram with presplit blasting;
Fig. 3 is the hydraulic flushing in hole and presplit blasting joint network layout drawing of the present invention;
Fig. 4 is the structural representation of embodiment reclaimed water coal gas separator;
Fig. 5 is the A direction views of the first vibration screen mechanism.
Embodiment
As Figure 1-5, hydraulic flushing in hole combines the construction party of anti-reflection extraction system with presplit blasting in drilling of the invention Method, in drilling hydraulic flushing in hole combine with presplit blasting anti-reflection extraction system include hydraulic flushing in hole device, presplit blasting device and watt This drainage device;Seat earth extraction lane to some blasting boreholes 9 of coal seam direction interlaced arrangement and punching drilling 5;
Hydraulic flushing in hole device includes drilling machine 1, drilling rod 2, drill bit 19, high pressure water-injection pump 3 and water-gas separator 4, drilling rod 2 Upper end is delivery port, and the lower end of drilling rod 2 is water inlet, and the delivery port of high pressure water-injection pump 3 is connected with the water inlet of drilling rod 2, the lower end of drilling rod 2 It is connected with the clutch end of drilling machine 1, the upper end of drilling rod 2 is extend into punching drilling 5 and is fixedly connected with drill bit 19, and punching is bored Sealing is provided with gas dust packing device 6 at 5 mouthfuls of hole, and gas dust packing device 6 is connected by pipeline and the entrance of water-gas separator 4 Connect;
Presplit blasting device includes initiator, lead 7 and pvc pipe 8, is provided with steel pipe 10 at 9 mouthfuls of blasting boreholes, steel pipe 10 with Sealing is filled with cement mortar 11 between blasting boreholes 9, and the upper end of pvc pipe 8 is inserted into steel pipe 10 and extend into blasting boreholes 9 Portion, the upper end of pvc pipe 8 are filled with emulsion 12,1m are in axial direction provided with detonating capsule 13 in emulsion 12, Pvc pipe 8 below last detonating capsule 13 sealing be filled with stemming 14, lead 7 detonating capsule 13 is connected after from The lower end of pvc pipe 8 is stretched out;Do not show in initiator figure;
Gas pumping device includes branch's drainage tube 15, total drainage tube 16 and gas pumping equipment 17, branch's drainage tube 15 It is inserted respectively into punching drilling 5, total drainage tube 16 will be connected after all parallel connections of branch's drainage tube 15 with gas pumping equipment 17, Gas pumping equipment 17 is prior art.
Hydraulic flushing in hole is combined the construction method of anti-reflection extraction system with presplit blasting and comprised the following steps in described drilling:
(1)Arrangement drilling;Drilled in seat earth extraction lane to some blasting boreholes 9 of coal seam direction interlaced arrangement and punching 5,9 adjacent punching of blasting boreholes drilling the distance between 5 is 3-6m;
(2)Explosion;Steel pipe 10 is installed at 9 mouthfuls of blasting boreholes, and steel pipe 10 and explosion are filled with the sealing of cement mortar 11 Space between drilling 9, treats that cement mortar 11 solidifies and emulsion 12 then is filled in into the one end of pvc pipe 8, close to emulsion 12 installation detonating capsules 13, then load emulsion 12, successively cyclic pac king, adjacent detonating capsule 13 close to detonating capsule 13 The distance between be 1m, close to last detonating capsule 13 at sealing filling stemming 14, load emulsion 12 and installation During detonating capsules 13, all detonating capsules 13 are connected using lead 7 and lead 7 stretches out from the lower end of pvc pipe 8, Length of the pvc pipe 8 from filling one end of emulsion 12 at sealing filling stemming 14 is less than the axial length of blasting boreholes 9, extremely This completes dynamite charge operation, and the pvc pipe 8 after filling then is sent into blasting boreholes 9 along steel pipe 10, then by lead 7 with rising Quick-fried device connection, starts initiator and carries out explosion;
(3)Preliminary gas pumping;Extract pvc pipe 8 after explosion out, and insert branch's drainage tube 15, the extraction of sealing filling branch Space between pipe 15 and steel pipe 10, then that total drainage tube 16 is in parallel with all branch's drainage tubes 15, connection gas pumping is set Standby 17 carry out preliminary gas pumping with total drainage tube 16;
(4)Preliminary hydraulic flushing in hole;Using hydraulic flushing in hole device liquidate one by one hole drilling 5 carry out hydraulic flushing in hole operation, punching Drill and pass through seat earth at the top of 5 extraction lanes, hydraulic flushing in hole is carried out from seat earth every mono- point of 2m, up to roof;
(5)Waterpower is cut;Start high pressure water-injection pump 3, operate drilling machine 1, move back and forth drilling rod 2 and drive drill bit 19 to revolve Turning, drill bit 19 is cut to coal body, carries out hydraulic flushing in hole cutting coal body again, crack relief area is formed around drilling, After full coal section punches, move back drill bit 19 while punching, then Drilling bore bit 19, exit drill bit 19 again, so circulation until punching not Produce coal, untill backwater becomes clear, when waterpower is cut, start water-gas separator 4 and separated the water cinder flowed out in drilling, Hydraulic flushing in hole hydraulic pressure is 8-15MPa;Coal seam solid coefficient is applicable within the scope of 0.5-1.5;
(6)Permanent gas pumping;After waterpower cutting operation, high pressure water-injection pump 3 is closed, drilling rod 2 is exited, uses immediately The sealing of hole of cement mortar 11, extraction borehole are connected using wired hose with total drainage tube 16, carry out gas pumping.
Water-gas separator 4 includes collector casing 20, first level filtering device, two-stage filter and two resistance coal baffle plates 23;First level filtering device, two-stage filter and two resistance coal baffle plates 23 are arranged inside collector casing 20, collector box Body 20 is a relative confined space, and the top right side of collector casing 20 is provided with air water slag mixture inlet 24, collector casing 20 Top left side is provided with bleeding point 25, and the bottom right bottom of collector casing 20 is sequentially provided with delivery port 26, cinder outlet 27 from top to bottom With coal slime outlet 28;
First level filtering device includes the first vibration screen mechanism and the first power-driven mechanism;First vibration screen mechanism position In the internal upper part of collector casing 20, the first vibration screen mechanism includes the first stainless steel plate 29 and external form in the of rectangular parallelepiped structure One metal steel skeleton 30;The left side of first metal steel skeleton 30 and right side are connected with the first ostriquetrum by the first stiffness spring 31 Frame buffer board 32, the first stiffness spring 31 are provided with a row along the longitudinal direction, and two the first triangle skeleton buffer boards 32 are fixed respectively The first triangle skeleton buffer board 32 in the left side of the upper inside wall of collector casing 20 and right side and left side is located at the first of right side The lower section of triangle skeleton buffer board 32;The bottom of first metal steel skeleton 30 is provided with the first metal screen 33 that external form is rectangle, the The right edge of one metal screen 33 is long close to the bottom surface right edge of the first metal steel skeleton 30, the front side edge of the first metal screen 33 edge Degree is less than the bottom surface front side edge edge of the first metal steel skeleton 30, and the first metal screen 33, which is provided with, is located at air water slag mixture inlet 24 First rubber buffer plate 34 of underface;First stainless steel plate 29 is located at the lower section of the first metal screen 33 and the first stainless steel plate 29 It is be arranged in parallel with the first metal screen 33, the front side edge edge of the first stainless steel plate 29 and rear lateral edge are each attached to collector casing On 20 inwalls, there is gap between the left side of the first stainless steel plate 29 and the inwall of collector casing 20;First metal steel skeleton 30 Bottom left and right side are rotatably connected to the first roller 35, and two the first rollers 35 are crimped on the upper table of the first stainless steel plate 29 Face;The left side edge of first stainless steel plate 29 is provided with the first first through hole 37 for blocking water baffle plate 36 and the baffle plate 36 that blocked water close to first, The one end of outlet pipe 38 is connected with first through hole 37, the other end of outlet pipe 38 is reached outside collector casing 20 from delivery port 26 Portion;First power-driven mechanism includes the first motor 39 and the first vibration pull bar 40, and the first motor 39 is arranged on receipts Inside storage casing 20, the main shaft key of the first motor 39 is connected with the first drive disk 41, and the first metal steel skeleton 30 is provided with First fixed seat 42, first vibration pull bar 40 one end are hinged in the first fixed seat 42, and the first vibration other end of pull bar 40 is hinged In the eccentric part of the first drive disk 41;
Two-stage filter includes the second vibration screen mechanism and the second power-driven mechanism;Second vibration screen mechanism position In the lower section of the first stainless steel plate 29, the second vibration screen mechanism includes the second stainless steel plate 43 and external form in the of rectangular parallelepiped structure Two metal steel skeletons 44;The left side of second metal steel skeleton 44 and right side are connected with the second ostriquetrum by the second stiffness spring 45 Frame buffer board 46, the second stiffness spring 45 are provided with a row along the longitudinal direction, and two the second triangle skeleton buffer boards 46 are fixed respectively The second triangle skeleton buffer board 46 on the left side of the inwall of collector casing 20 and right side and left side is located at second triangle on right side The top of skeleton buffer board 46;The bottom of second metal steel skeleton 44 is provided with the second metal screen 47 that external form is rectangle, the second gold medal It is small close to the bottom surface left side edge of the second metal steel skeleton 44, the front side edge length of the second metal screen 47 to belong to the left side edge of filter screen 47 In the bottom surface front side edge edge of the second metal steel skeleton 44, the left side upper surface of the second metal screen 47 is provided with the second rubber buffer plate 48; Two resistance coal baffle plates 23 positioned at the first metal screen 33 and the second metal screen 47 between, two front side edge edges of resistance coal baffle plate 23 with Rear lateral edge is each attached on the inwall of collector casing 20, is formed between two resistance coal baffle plates 23 and the inwall of collector casing 20 Small upper and lower penetrating pyramidal structure 49 under big, the upper port of pyramidal structure 49 are bored close to the left side edge of the first metal screen 33 The lower port of shape structure 49 is close to the second metal screen 47 and positioned at the surface of the second rubber buffer plate 48;Second stainless steel plate 43 be arranged in parallel positioned at the lower section of the second metal screen 47 and the second stainless steel plate 43 with the second metal screen 47, the second stainless steel plate 43 front side edge edge and rear lateral edge are each attached on the inwall of collector casing 20, the left side of the second stainless steel plate 43 and collector There is gap between the inwall of casing 20;The bottom left of second metal steel skeleton 44 and right side are rotatably connected to the second roller 50, Two the second rollers 50 are crimped on the upper surface of the second stainless steel plate 43;The right edge of second stainless steel plate 43 blocks water provided with second Second through hole 52 of baffle plate 51 and the baffle plate 51 that blocked water close to second, the bottom of collector casing 20 are provided with and lead coal slime plate 53 and coal guide plate 54, the front side edge edge of coal guide plate 54 and rear lateral edge are fixed on the inwall of collector casing 20, the left side edge of coal guide plate 54 close to The right edge of second metal screen 47, the right edge of coal slime plate 53 is led close to the lower edge of cinder outlet 27;Lead coal slime plate 53 Front side edge edge and rear lateral edge be fixed on the inwall of collector casing 20, leading the left side edge of coal slime plate 53, to be immediately adjacent to second logical The lower section of hole 52, the right edge of coal slime plate 53 is led close to the lower edge of coal slime outlet 28;Second power-driven mechanism includes second Motor 55 and second vibrates pull bar 56, and the second motor 55 is arranged on inside collector casing 20, the second motor 55 main shaft keies are connected with the second drive disk 57, and the second metal steel skeleton 44 is provided with the second fixed seat 58, the second vibration pull bar 56 One end is hinged in the second fixed seat 58, and the second vibration other end of pull bar 56 is hinged on the eccentric part of the second drive disk 57;
The bottom of first metal steel skeleton 30 is provided with the brush plate 59 positioned at the right side of first through hole 37, and brush plate 59 is provided with hairbrush 60, the upper surface of 60 and first stainless steel plate of hairbrush 29
The specific works engineering of water-gas separator 4 is:The air water slag being collected into first by such as gas dust packing device 6 Collector casing 20 is entered by the air water slag mixture inlet 24 of the top right side of collector casing 20, afterwards unlatching and bleeding point The air-extractors of 25 connections, because collector casing 20 is a relative confined space, therefore in collector casing 20 with watt This gas can fully be taken away, and the mixture of water and cinder falls the cocurrent on the first rubber buffer plate 34 under gravity To the first metal screen 33, start the first motor 39, under the drive of the first motor 39, the first drive disk 41 rotates And drive first vibration pull bar 40 one end to move in a circle, on the first vibration other end of pull bar 40 and the first metal steel skeleton 30 First fixed seat 42 is be hinged, and the first vibration pull bar 40 pulls the first fixed seat 42 to swing back and forth in left-right direction, the first Rigid Projectiles Spring 31 plays a part of support connection;
Then the water in mixture through the first metal screen 33 and falls on the first stainless steel plate 29 of lower section, then mixes Water in compound flows downward along inclined first stainless steel plate 29, is flowed to after brush plate 59 further cleans filtering logical Hole, and then flow out from through hole and discharged along outlet pipe 38 by delivery port 26;Other cinder is in the first metal steel skeleton 30 Continuous swing under, slowly scroll down through along the first metal screen 33, then fall from the left side of the first metal screen 33 Enter in pyramidal structure 49, two resistance coal baffle plates 23 are used to prevent cinder from splashing down in collector casing 20 elsewhere, cinder along Pyramidal structure 49 falls in the second rubber buffer plate 48 and flows to the second metal screen 47, is rolled in cinder along the second metal screen 47 When dynamic, less coal grain and water form coal slime in cinder, and coal slime falls on the second stainless steel plate 43 through the second metal screen 47, Then the coal slime in mixture flows downward along inclined second stainless steel plate 43, is and then led from the outflow of the second through hole 52 and edge Coal slime plate 53 is discharged by coal slime outlet 28;
And coal cinder larger in cinder is under the continuous swing of the second metal steel skeleton 44, slowly along the second metal Filter screen 47 scrolls down through, and is then rolled out from the right side of the second metal screen 47 along coal guide plate 54 from cinder outlet 27, to this completion Air water slag detached job.
The present embodiment is not that the shape to the present invention, material, structure etc. make any formal limitation, every according to this hair Any simple modification, equivalent change and modification that bright technical spirit is made to above example, belongs to the technology of the present invention side The protection domain of case.

Claims (2)

1. hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting in drilling, it is characterised in that:Water in drilling Anti-reflection extraction system is combined in power punching, which with presplit blasting, includes hydraulic flushing in hole device, presplit blasting device and gas pumping device;
Hydraulic flushing in hole device includes drilling machine, drilling rod, drill bit, high pressure water-injection pump, gas dust packing device and water-gas separator, Drilling rod upper end is delivery port, and drilling rod lower end is water inlet, and the delivery port of high pressure water-injection pump is connected with drilling rod water inlet, drilling rod lower end It is connected with the clutch end of drilling machine, drilling rod upper end is fixedly connected with drill bit, and gas dust packing device passes through pipeline and water coal Gas separating device entrance connects;
Presplit blasting device includes initiator, steel pipe, lead and pvc pipe, and pvc pipe upper end is inserted into steel pipe, and pvc pipe upper end is filled out Filled with emulsion, 1m is in axial direction provided with detonating capsule in emulsion, pvc pipe rises positioned at last Sealing is filled with stemming below quick-fried detonator, and lead stretches out after detonating capsule is connected from pvc pipe lower end;
Gas pumping device includes branch's drainage tube, total drainage tube and gas pumping equipment, and total drainage tube is by all branch's extractions It is connected after pipe parallel connection with gas pumping equipment, valve is equipped with branch's drainage tube;
Described construction method comprises the following steps:
(1)Arrange bore position;Drilled in extraction lane to some blasting boreholes of coal seam direction interlaced arrangement and punching, blasting boreholes The distance between adjacent punching drilling is 3-6m;
(2)Explosion;Steel pipe is installed at blasting boreholes mouth, and the sky between filling steel pipe and blasting boreholes is sealed with cement mortar Gap, treat that emulsion is then filled in pvc pipe one end by cement mortar solidification, detonating capsule is installed close to emulsion, then Emulsion is loaded close to detonating capsule, the distance between cyclic pac king, adjacent detonating capsule is 1m successively, close to last Sealing filling stemming at detonating capsule, will be all using lead during emulsion and installation detonating capsule is loaded Detonating capsule is connected and lead stretches out from pvc pipe lower end, and pvc pipe is from filling emulsion one end at sealing filling stemming Length is less than the axial length of blasting boreholes, so far completes dynamite charge operation, is then sent into the pvc pipe after filling along steel pipe Blasting boreholes, then lead is connected with initiator, starts initiator and carry out explosion;
(3)Preliminary gas pumping;Extract pvc pipe after explosion out, and insert branch's drainage tube, sealing filling branch's drainage tube and steel pipe Between space, it is then that total drainage tube is in parallel with all branch's drainage tubes, connection gas pumping equipment and total drainage tube, open Gas pumping equipment is to carrying out preliminary gas pumping in blasting boreholes;
(4)Preliminary hydraulic flushing in hole;Using hydraulic flushing in hole device liquidate one by one hole drilling carry out hydraulic flushing in hole operation, punching drilling take out Adopt and pass through seat earth at the top of lane, hydraulic flushing in hole is carried out from seat earth every mono- point of 2m, until roof;
(5)Waterpower is cut;Start high pressure water-injection pump, operate drilling machine, move back and forth drilling rod and drive bit, enter again Row hydraulic flushing in hole cuts coal body, and crack relief area is formed around drilling, after full coal section punches, moves back drill bit while rushing Hole, then again Drilling bore bit, move back drill bit again, so circulation untill backwater becomes clear, when waterpower is cut, is opened until punching is not produced coal Dynamic water-gas separator is separated the water cinder flowed out in drilling;Hydraulic flushing in hole hydraulic pressure is 8-15MPa;It is firm to be applicable coal seam Property coefficient is within the scope of 0.5-1.5;
(6)Permanent gas pumping;After waterpower cutting operation, high pressure water-injection pump is closed, drilling rod is exited, immediately using cement bonded sand Sealing of hole is starched, extraction borehole is connected using wired hose with total drainage tube, carries out gas pumping;
Water-gas separator includes collector casing, first level filtering device, two-stage filter and two resistance coal baffle plates;One-level mistake Filter device, two-stage filter and two resistance coal baffle plates are arranged at collector box house, and collector casing is one relatively close Space is closed, collector casing top right side is provided with air water slag mixture inlet, and collector casing top left side is provided with bleeding point, receives Storage casing bottom right bottom is sequentially provided with delivery port, cinder outlet and coal slime outlet from top to bottom;
First level filtering device includes the first vibration screen mechanism and the first power-driven mechanism;First vibration screen mechanism is positioned at receipts Storage casing internal upper part, the first vibration screen mechanism includes the first stainless steel plate and external form is in the first metallic steel of rectangular parallelepiped structure Skeleton;On the left of first metal steel skeleton and right side is connected with the first triangle skeleton buffer board by the first stiffness spring, and first Stiffness spring is provided with a row along the longitudinal direction, and two the first triangle skeleton buffer boards are separately fixed at collector casing upper inside wall Left side and the first triangle skeleton buffer board in right side and left side be located at below the first triangle skeleton buffer board on right side;First gold medal Category steel skeleton bottom is provided with the first metal screen that external form is rectangle, and the first metal screen right edge is close to the first metallic steel Skeleton bottom surface right edge, edge length is less than the first metal steel skeleton bottom surface front side edge edge on front side of the first metal screen, and first Metal screen is provided with the first rubber buffer plate immediately below air water slag mixture inlet;First stainless steel plate is located at first Below metal screen and the first stainless steel plate be arranged in parallel with the first metal screen, the front side edge edge of the first stainless steel plate and rear side Edge is each attached on collector cabinet wall, has gap between the left side of the first stainless steel plate and collector cabinet wall; First metal steel skeleton bottom left and right side are rotatably connected to the first roller, and it is stainless that two the first rollers are crimped on first Upper surface of steel plate;First stainless steel plate left side edge is provided with the first first through hole for blocking water baffle plate and the baffle plate that blocked water close to first, Outlet pipe one end is connected with first through hole, the other end of outlet pipe is reached outside collector box body from delivery port;First is dynamic Power drive mechanism includes the first motor and the first vibration pull bar, and the first motor is arranged on collector box house, the One motor main shaft key is connected with the first drive disk, and the first metal steel skeleton is provided with the first fixed seat, the first vibration pull bar One end is hinged in the first fixed seat, and the first vibration pull bar other end is hinged on the eccentric part of the first drive disk;
Two-stage filter includes the second vibration screen mechanism and the second power-driven mechanism;Second vibration screen mechanism is positioned at the Below one stainless steel plate, the second vibration screen mechanism includes the second stainless steel plate and external form is in the second metallic steel of rectangular parallelepiped structure Skeleton;On the left of second metal steel skeleton and right side is connected with the second triangle skeleton buffer board by the second stiffness spring, and second Stiffness spring is provided with a row along the longitudinal direction, and two the second triangle skeleton buffer boards are separately fixed at a left side for collector cabinet wall The second triangle skeleton buffer board in side and right side and left side is located above the second triangle skeleton buffer board on right side;Second metallic steel Skeleton bottom is provided with the second metal screen for being rectangle of external form, and the second metal screen left side edge is close to the second metal steel skeleton Bottom surface left side edge, the second metal screen front side edge length are less than the second metal steel skeleton bottom surface front side edge edge, the second metal Upper surface is provided with the second rubber buffer plate on the left of filter screen;Two resistance coal baffle plates be located at the first metal screen and the second metal screen it Between, two resistance coal baffle plate front side edge edges and rear lateral edge are each attached on collector cabinet wall, and two resistance coal baffle plates are with collecting Up big and down small upper and lower penetrating pyramidal structure is formed between device cabinet wall, the upper port of pyramidal structure is filtered close to the first metal Net left side edge, the lower port of pyramidal structure is close to the second metal screen and positioned at the surface of the second rubber buffer plate;Second Stainless steel plate is located at below the second metal screen and the second stainless steel plate be arranged in parallel with the second metal screen, the second stainless steel plate Front side edge edge and rear lateral edge be each attached on collector cabinet wall, the left side of the second stainless steel plate with collector box body There is gap between wall;Second metal steel skeleton bottom left and right side are rotatably connected to the second roller, two the second rollers It is crimped on the second stainless steel plate upper surface;Second stainless steel plate right edge blocks water provided with second and baffle plate and blocked water close to second Second through hole of baffle plate, collector lower box are provided with and lead coal slime plate and coal guide plate, the front side edge edge of coal guide plate and rear lateral edge It is fixed on collector cabinet wall, the left side edge of coal guide plate leads the right side of coal slime plate close to the second metal screen right edge The lower edge that edge exports close to cinder;The front side edge edge and rear lateral edge for leading coal slime plate are fixed on collector cabinet wall, lead The left side edge of coal slime plate is immediately adjacent to below the second through hole, leads the lower edge that the right edge of coal slime plate exports close to coal slime; Second power-driven mechanism includes the second motor and the second vibration pull bar, and the second motor is arranged in collector box body Portion, the second motor main shaft key are connected with the second drive disk, and the second metal steel skeleton is provided with the second fixed seat, the second vibration Pull bar one end is hinged in the second fixed seat, and the second vibration pull bar other end is hinged on the eccentric part of the second drive disk;
The specific works engineering of water-gas separator is:The air water slag being collected into first by such as gas dust packing device passes through receipts Air water slag mixture inlet on the right side of storage casing top enters collector casing, opens the pumping being connected with bleeding point afterwards and sets Standby, because collector casing is a relative confined space, therefore the gas with gas in collector box body can fully be taken out Walk, the mixture of water and cinder falls on the first rubber buffer plate and flows to the first metal screen under gravity, starts First motor, under the drive of the first motor, the first drive disk rotates and drives first vibration pull bar one end to do circle Zhou Yundong, the first vibration pull bar other end are hinged with the first fixed seat on the first metal steel skeleton, and the first vibration pull bar pulls First fixed seat swings back and forth in left-right direction, and the first stiffness spring plays a part of support connection;
Then the water in mixture through the first metal screen and falls on the first stainless steel plate of lower section, then in mixture Water is flowed downward along inclined first stainless steel plate, and through hole is flowed to after brush plate further cleans filtering, and then from logical Flow out and discharged along outlet pipe by delivery port in hole;Other cinder is under the continuous swing of the first metal steel skeleton, slowly Slowly scroll down through along the first metal screen, then fallen on the left of the first metal screen in pyramidal structure, two resistance coal gears Plate is used to prevent cinder from splashing down in collector casing elsewhere, and cinder falls in the second rubber buffer plate cocurrent along pyramidal structure To the second metal screen, when cinder rolls along the second metal screen, less coal grain and water form coal slime, coal slime in cinder Fall through the second metal screen on the second stainless steel plate, then the coal slime in mixture is downward along inclined second stainless steel plate Flowing, and then discharged from the outflow of the second through hole and along coal slime plate is led by coal slime outlet;
And coal cinder larger in cinder is under the continuous swing of the second metal steel skeleton, slowly along the second metal screen to Lower rolling, then rolled out from the right side of the second metal screen along coal guide plate from cinder outlet, to this completion air water slag detached job.
2. hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting in drilling according to claim 1, It is characterized in that:First metal steel skeleton bottom is provided with the brush plate on the right side of first through hole, and brush plate is provided with hairbrush, hairbrush With the first stainless steel plate upper surface.
CN201511012857.6A 2015-12-31 2015-12-31 Hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting in drilling CN105507938B (en)

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