CN105507938A - Construction method of hydraulic flushing and presplit blasting combined permeability-increasing extraction system in drill holes - Google Patents

Construction method of hydraulic flushing and presplit blasting combined permeability-increasing extraction system in drill holes Download PDF

Info

Publication number
CN105507938A
CN105507938A CN201511012857.6A CN201511012857A CN105507938A CN 105507938 A CN105507938 A CN 105507938A CN 201511012857 A CN201511012857 A CN 201511012857A CN 105507938 A CN105507938 A CN 105507938A
Authority
CN
China
Prior art keywords
edge
hole
coal
plate
corrosion resistant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201511012857.6A
Other languages
Chinese (zh)
Other versions
CN105507938B (en
Inventor
杨明
高建良
张学博
王晓楠
侯三中
郭飞鹏
徐冬冬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan University of Technology
Original Assignee
Henan University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan University of Technology filed Critical Henan University of Technology
Priority to CN201511012857.6A priority Critical patent/CN105507938B/en
Publication of CN105507938A publication Critical patent/CN105507938A/en
Application granted granted Critical
Publication of CN105507938B publication Critical patent/CN105507938B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

A construction method of a hydraulic flushing and presplit blasting combined permeability-increasing extraction system in drill holes includes the steps of (1), forming the drill holes, namely forming a plurality of blasting drill holes and a plurality of flushing drill holes in an extraction roadway of a coal seam floor towards a coal seam direction in a staggered manner, wherein a distance between each blasting drill hole and the adjacent flushing drill hole ranges from 3 meters to 6 meters; (2), blasting, namely mounting a steel pipe at an orifice of each blasting drill hole, filling a gap between the steel pipe and the corresponding blasting drill hole with cement mortar hermetically, filling one end of a PVC (polyvinyl chloride) pipe with emulsion explosive after the cement mortar is solidified, mounting a primer detonator closely to the emulsion explosive, filling a position, close to the primer detonator, with emulsion explosive, filling circularly sequentially and filling a position, close to the last primer detonator, with stemming, wherein a distance between each two adjacent primer detonators is one meter. According to the construction method, coal seam gas permeability is improved effectively, gas extraction effects are enhanced, extraction time is shortened effectively and potential safety hazards of gas are reduced maximally.

Description

In boring, hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting
Technical field
The invention belongs to technical field of coal exploitation, the interior hydraulic flushing in hole that is specifically related to hole combines the construction method of anti-reflection extraction system with presplit blasting.
Background technology
The bearing features that China's energy resources have " rich coal, oil-poor, weak breath ".In energy industrial mix, according to the report of BP British Petroleum Company, China's energy consumption structure Continual Improvement in 2013, consumption of coal accounts for 67.5% of primary energy total quantity consumed, wound the new lowest record in history, but exceeds nearly 40 percentage points of the current average level in the world.Therefore, in considerable time from now on, coal remains unchanged the main energy sources of China, ensures that Safety of Coal Mine Production is national economy sustainable development important leverage.Coal mining due to domestic 95% is underground work, and condition of coal seam occurrence is complicated, and most of mine enters deep mining period.The increase of coal seam buried depth makes that the geostatic stress in coal seam increases, gas bearing capacity and gas pressure also constantly to increase and the gas permeability of coal seam and country rock reduces, thus adding the hidden danger of the coal and gas prominent in coal seam.According to statistics; the coal seam of the high methane in the whole nation more than 95% and projecting mine exploitation belongs to low air permeability coal seam; cause that gas pumping influence basin is little, the rate of decay is fast, extraction difficulty is large; and do not possess protective coat extracted condition in most of pit zone; conventional gas pumping technology effectively cannot solve and increase the infiltrative difficult problem of coal seam reservoirs; directly cause mine gas extraction rate low, " bore, take out, adopt, dig " proportional imbalance.Therefore need to take the anti-reflection measure of certain release, increase gas permeability of coal seam, improve gas drainage under suction effect, effectively can reduce the generation that getting working face gives prominence to accident.
For the problems referred to above, domestic and international coal scientific research personnel has carried out Testing and research widely, mainly takes release anti-reflection method in coal seam at present.In layer, release anti-reflection method has run before to exhaust to drill a hole, dark controlled Short Hole Blasting, coal-bed flooding, fracturing, hydrodynamic behavior, hydraulic slotted liner technique, hydraulic flushing in hole etc.But these single method majorities exist, and drilling construction engineering quantity is large, working procedure is complicated and engineering drops into the problems such as high, effective influence basin is little, the extraction time is long, therefore need to take other more effectively release anti-reflection method, expand the effective influence basin of boring, improve this coal bed gas extraction effect.
Summary of the invention
The present invention in order to solve weak point of the prior art, provide that a kind of construction works amount is little, construction sequence be simple, effectively influence basin large and in the boring that extraction efficiency is high hydraulic flushing in hole combine the construction method of anti-reflection extraction system with presplit blasting.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: in boring, hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting, and in boring, hydraulic flushing in hole is combined anti-reflection extraction system and comprised hydraulic flushing in hole device, presplit blasting device and gas pumping device with presplit blasting;
Hydraulic flushing in hole device comprises rig, drilling rod, drill bit, high pressure water-injection pump, gas dust packing device and water-gas eliminator, drilling rod upper end is delivery port, drilling rod lower end is water inlet, the delivery port of high pressure water-injection pump is connected with drilling rod water inlet, drilling rod lower end is connected with the clutch end of rig, drilling rod upper end is fixedly connected with drill bit, and gas dust packing device is connected with water-gas separator inlet by pipeline;
Presplit blasting device comprises initiator, steel pipe, lead-in wire and pvc pipe, pvc pipe upper end is inserted in steel pipe, pvc pipe upper end is filled with emulsion, in emulsion, in axial direction 1m is provided with primer detonator, pvc pipe is filled with stemming being positioned at below last primer detonator sealing, goes between after being connected by primer detonator and stretches out from pvc pipe lower end;
Gas pumping device comprises branch's drainage tube, total drainage tube and gas pumping equipment, total drainage tube by after the drainage tube parallel connection of all branches with gas pumping equipment connection, branch's drainage tube is equipped with valve;
Described using method comprises the following steps:
(1) bore position is arranged; In extraction lane to the some blasting boreholes of direction, coal seam interlaced arrangement and punching boring, blasting boreholes and adjacent punching hole between distance be 3-6m;
(2) explosion, at blasting boreholes mouth place, steel pipe is installed, and fill the space between steel pipe and blasting boreholes with cement mortar sealing, treat that cement mortar is solidified and then emulsion is filled in pvc pipe one end, next-door neighbour's emulsion installs primer detonator, then be close to primer detonator and load emulsion, cyclic pac king successively, distance between adjacent primer detonator is 1m, be close to the sealing of last primer detonator place and fill stemming, loading emulsion and installing in the process of primer detonator, adopt lead-in wire by the series connection of all primer detonators and go between and stretch out from pvc pipe lower end, pvc pipe is less than the axial length of blasting boreholes to the length of sealing filling stemming from filling emulsion one end, so far dynamite charge operation is completed, then the pvc pipe after filling is sent into blasting boreholes along steel pipe, then will go between and to be connected with initiator, start initiator and carry out explosion,
(3) preliminary gas pumping; Pvc pipe is extracted out after explosion, and insert branch's drainage tube, the space between branch's drainage tube and steel pipe is filled in sealing, then that total drainage tube is in parallel with all branches drainage tubes, connect gas pumping equipment and total drainage tube, open gas pumping equipment and carry out preliminary gas pumping in blasting boreholes;
(4) preliminary hydraulic flushing in hole; Adopt the hydraulic flushing in hole device hole drilling that liquidates one by one to carry out hydraulic flushing in hole operation, hydraulic flushing in hole, through seat earth, is carried out, until roof from seat earth every 2m point in top, punching hole pumping and mining lane;
(5) waterpower cutting; Start high pressure water-injection pump, operation rig, makes drilling rod move back and forth and drives bit, again carries out hydraulic flushing in hole cutting coal body, crack relief area is formed around boring, full coal section moves back drill bit punching after having rushed, and then Drilling bore bit, moves back drill bit again, circulation like this is not until punching is produced coal, till backwater becomes clearly, when waterpower is cut, start water-gas eliminator and the water cinder flowed out in boring is separated; Hydraulic flushing in hole hydraulic pressure is 8-15MPa; Be suitable for coal seam solid coefficient within 0.5-1.5 scope;
(6) permanent gas pumping; After waterpower cutting operation, close high pressure water-injection pump, exit drilling rod, use cement mortar sealing of hole immediately, extraction borehole adopts wired hose to be connected with total drainage tube, carries out gas pumping.
Water-gas eliminator comprises collector casing, first level filtering device, two-stage filter and two resistance coal baffle plates; First level filtering device, two-stage filter and two resistance coal baffle plates are all arranged on collector box house, collector casing is a relative confined space, collector casing top right side is provided with air water slag mixture inlet, collector casing top left side is provided with extract opening, is provided with delivery port, cinder outlet and coal slime outlet bottom collector casing bottom right from top to bottom successively;
First level filtering device comprises the first vibration screen mechanism and the first power-driven mechanism; First vibration screen mechanism is positioned at collector casing internal upper part, and the first vibration screen mechanism comprises the first metallic steel skeleton that the first corrosion resistant plate and external form are rectangular structure; On the left of first metallic steel skeleton and right side is all 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 the left side of collector casing upper inside wall and right side and the first triangle skeleton buffer board in left side is positioned at below the first triangle skeleton buffer board on right side; The first metal screen that external form is rectangle is provided with bottom first metallic steel skeleton, first metal screen right edge is along next-door neighbour the first right edge edge, metallic steel skeleton bottom surface, on front side of first metal screen, edge length is less than the first front side edge edge, metallic steel skeleton bottom surface, and the first metal screen is provided with the first rubber buffer plate be positioned at immediately below air water slag mixture inlet; First corrosion resistant plate is positioned at below the first metal screen and the first corrosion resistant plate and the first metal screen be arranged in parallel, the front side edge edge of the first corrosion resistant plate and back side edge, along being all fixed on collector cabinet wall, have gap between the left side of the first corrosion resistant plate and collector cabinet wall; First metallic steel skeleton bottom left and right side are all rotatably connected to the first roller, and two the first rollers are all crimped on the first corrosion resistant plate upper surface; First corrosion resistant plate left side edge is provided with first and blocks water the first through hole that baffle plate and next-door neighbour first block water baffle plate, and the first through hole is connected with outlet pipe one end, and the other end of outlet pipe reaches collector box external body from delivery port; First power-driven mechanism comprises the first drive motors and the first vibration pull bar, first drive motors is arranged on collector box house, first drive motors main shaft key is connected with the first driving-disc, first metallic steel skeleton is provided with the first holder, first vibration pull bar one end is hinged on the first holder, and the first vibration pull bar other end is hinged on the eccentric part of the first driving-disc;
Two-stage filter comprises the second vibration screen mechanism and the second power-driven mechanism; Second vibration screen mechanism is positioned at below the first corrosion resistant plate, and the second vibration screen mechanism comprises the second metallic steel skeleton that the second corrosion resistant plate and external form are rectangular structure; On the left of second metallic steel skeleton and right side is all 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 the left side of collector cabinet wall and right side and the second triangle skeleton buffer board in left side is positioned at above the second triangle skeleton buffer board on right side; The second metal screen that external form is rectangle is provided with bottom second metallic steel skeleton, second metal screen left side edge is close to the second metallic steel skeleton bottom surface left side edge, on front side of second metal screen, edge length is less than the second front side edge edge, metallic steel skeleton bottom surface, and on the left of the second metal screen, upper surface is provided with the second rubber buffer plate; Two resistance coal baffle plates are between the first metal screen and the second metal screen, two resistance coal baffle plate front side edge edges and back side edge are along being all fixed on collector cabinet wall, up big and down small pyramidal structure penetrating is up and down formed between two resistance coal baffle plates and collector cabinet wall, the upper port of pyramidal structure is close to the first metal screen left side edge, and the lower port of pyramidal structure is close to the second metal screen and is positioned at directly over the second rubber buffer plate; Second corrosion resistant plate is positioned at below the second metal screen and the second corrosion resistant plate and the second metal screen be arranged in parallel, the front side edge edge of the second corrosion resistant plate and back side edge, along being all fixed on collector cabinet wall, have gap between the left side of the second corrosion resistant plate and collector cabinet wall; Second metallic steel skeleton bottom left and right side are all rotatably connected to the second roller, and two the second rollers are all crimped on the second corrosion resistant plate upper surface; Second corrosion resistant plate right edge to block water the second through hole that baffle plate and next-door neighbour second block water baffle plate along being provided with second, collector lower box is provided with leads coal slime plate and coal guide plate, the front side edge edge of coal guide plate and back side edge are along being fixed on collector cabinet wall, the left side edge of coal guide plate is close to the second metal screen right edge edge, leads the lower edge of right edge along the outlet of next-door neighbour's cinder of coal slime plate; Front side edge edge and the back side edge edge of leading coal slime plate are fixed on collector cabinet wall, and the left side edge next-door neighbour leading coal slime plate is positioned at below the second through hole, lead the lower edge of right edge along the outlet of next-door neighbour's coal slime of coal slime plate; Second power-driven mechanism comprises the second drive motors and the second vibration pull bar, second drive motors is arranged on collector box house, second drive motors main shaft key is connected with the second driving-disc, second metallic steel skeleton is provided with the second holder, second vibration pull bar one end is hinged on the second holder, and the second vibration pull bar other end is hinged on the eccentric part of the second driving-disc.
Be provided with the brush plate be positioned on the right side of the first through hole bottom first metallic steel skeleton, brush plate is provided with hairbrush, and hairbrush contacts with the first corrosion resistant plate upper surface.
The present invention has following beneficial effect: will hole presplit blasting and hydraulic flushing in hole are holed arranged crosswise, first implement presplit blasting, again hydraulic flushing in hole is carried out to the boring of surrounding, explosion can make the loose coal around boring, it is mutually through that generation crack and hydraulic flushing in hole form crack, intersection fracture network is formed around coal bed drilling, play the effect to the cracks in coal seam network rebuilding, crack further expands, increase Gas Flow passage, improve gas permeability of coal seam, promote desorb and the discharge of gas, significantly reduce and occur blank tape.During punching simultaneously, go out a large amount of ickings, the surrounding medium forming cave acutely moves to direction, hole, duct, the dilatancy of coal body and the displacement in opposite directions of roof and floor occurs, causes the geostatic stress within the scope of punching certain influence to reduce, coal seam pressure relief.Both eliminate outstanding power, changed again projecting coal bed character, serve the effect of control coal and gas prominent when digging operation.Compared with prior art, drilling hole amount is few, shorten gas total extraction time, extraction efficiency is high, tunnelling and coal work safety, coal mining efficiency advantages of higher.
In sum, the present invention improves gas permeability of coal seam effectively, improves gas pumping effect, effectively reduces the extraction time, reduces gas safety hidden danger to greatest extent.
Accompanying drawing explanation
Fig. 1 is that in embodiment, in boring, hydraulic flushing in hole combines the structural representation of anti-reflection extraction system with presplit blasting;
Fig. 2 is that rock gangway of the present invention is worn hydraulic flushing in hole in layer and combined anti-reflection extraction pipeline schematic diagram with presplit blasting;
Fig. 3 is hydraulic flushing in hole of the present invention and presplit blasting joint network arrangement diagram;
Fig. 4 is the structural representation of water-gas eliminator in embodiment;
Fig. 5 is the A direction view of the first vibration screen mechanism.
Detailed description of the invention
As Figure 1-5, in boring of the present invention, hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting, and in boring, hydraulic flushing in hole is combined anti-reflection extraction system and comprised hydraulic flushing in hole device, presplit blasting device and gas pumping device with presplit blasting; In seat earth extraction lane to the some blasting boreholes 9 of direction, coal seam interlaced arrangement and punching boring 5;
Hydraulic flushing in hole device comprises rig 1, drilling rod 2, drill bit 19, high pressure water-injection pump 3 and water-gas eliminator 4, drilling rod 2 upper end is delivery port, drilling rod 2 lower end is water inlet, the delivery port of high pressure water-injection pump 3 is connected with drilling rod 2 water inlet, drilling rod 2 lower end is connected with the clutch end of rig 1, drilling rod 2 upper end extend into punching boring 5 in and be fixedly connected with drill bit 19, punching is holed 5 mouthfuls and is located sealing and be provided with gas dust packing device 6, and gas dust packing device 6 is connected with water-gas eliminator 4 entrance by pipeline;
Presplit blasting device comprises initiator, lead-in wire 7 and pvc pipe 8, blasting boreholes 9 mouthfuls of places are provided with steel pipe 10, seal between steel pipe 10 and blasting boreholes 9 and be filled with cement mortar 11, pvc pipe 8 upper end is inserted in steel pipe 10 and to extend into blasting boreholes 9 inner, pvc pipe 8 upper end is filled with emulsion 12, in emulsion 12, in axial direction 1m is provided with primer detonator 13, pvc pipe 8 is filled with stemming 14 being positioned at below last primer detonator 13 sealing, and lead-in wire 7 stretches out from pvc pipe 8 lower end after being connected by primer detonator 13; Initiator is not shown in the figures;
Gas pumping device comprises branch's drainage tube 15, total drainage tube 16 and gas pumping equipment 17, branch's drainage tube 15 is inserted in punching boring 5 respectively, be connected with gas pumping equipment 17 after total drainage tube 16 is in parallel by all branches drainage tube 15, gas pumping equipment 17 is prior art.
The construction method that in described boring, hydraulic flushing in hole combines anti-reflection extraction system with presplit blasting comprises the following steps:
(1) boring is arranged; In seat earth extraction lane to the some blasting boreholes 9 of direction, coal seam interlaced arrangement and punching boring 5, the distance between the adjacent punching boring 5 of blasting boreholes 9 is 3-6m;
(2) explosion, blasting boreholes 9 mouthfuls, steel pipe 10 is installed at place, and the space of filling between steel pipe 10 and blasting boreholes 9 is sealed by cement mortar 11, treat that cement mortar 11 is solidified and then emulsion 12 is filled in pvc pipe 8 one end, next-door neighbour's emulsion 12 installs primer detonator 13, then be close to primer detonator 13 and load emulsion 12, cyclic pac king successively, distance between adjacent primer detonator 13 is 1m, be close to the sealing of last primer detonator 13 place and fill stemming 14, loading emulsion 12 and installing in the process of primer detonator 13, adopt lead-in wire 7 to be connected by all primer detonators 13 and go between 7 to stretch out from pvc pipe 8 lower end, pvc pipe 8 is less than the axial length of blasting boreholes 9 to the length of sealing filling stemming 14 from filling emulsion 12 one end, so far dynamite charge operation is completed, then the pvc pipe 8 after filling is sent into blasting boreholes 9 along steel pipe 10, then lead-in wire 7 is connected with initiator, start initiator and carry out explosion,
(3) preliminary gas pumping; Pvc pipe 8 is extracted out after explosion, and insert branch's drainage tube 15, the space between branch drainage tube 15 and steel pipe 10 is filled in sealing, and then that total drainage tube 16 is in parallel with all branches drainage tubes 15, connection gas pumping equipment 17 and total drainage tube 16 carry out preliminary gas pumping;
(4) preliminary hydraulic flushing in hole; Adopt the hydraulic flushing in hole device hole drilling 5 that liquidates one by one to carry out hydraulic flushing in hole operation, punching holes 5 tops, extraction lane through seat earth, carries out hydraulic flushing in hole, until roof from seat earth every 2m point;
(5) waterpower cutting; Start high pressure water-injection pump 3, operation rig 1, drilling rod 2 is moved back and forth and drives drill bit 19 to rotate, drill bit 19 pairs of coal bodies cut, again carry out hydraulic flushing in hole cutting coal body, crack relief area is formed around boring, after full coal section has been rushed, move back drill bit 19 while punching, then Drilling bore bit 19, exit drill bit 19 again, so circulation is not until punching is produced coal, till backwater becomes clearly, when waterpower is cut, start water-gas eliminator 4 and be separated by the water cinder flowed out in boring, hydraulic flushing in hole hydraulic pressure is 8-15MPa; Be suitable for coal seam solid coefficient within 0.5-1.5 scope;
(6) permanent gas pumping; After waterpower cutting operation, close high pressure water-injection pump 3, exit drilling rod 2, use cement mortar 11 sealing of hole immediately, extraction borehole adopts wired hose to be connected with total drainage tube 16, carries out gas pumping.
Water-gas eliminator 4 comprises 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 all arranged on collector casing 20 inside, collector casing 20 is a relative confined space, collector casing 20 top right side is provided with air water slag mixture inlet 24, collector casing 20 top left side is provided with extract opening 25, is provided with delivery port 26, cinder outlet 27 and coal slime outlet 28 bottom collector casing 20 bottom right from top to bottom successively;
First level filtering device comprises the first vibration screen mechanism and the first power-driven mechanism; First vibration screen mechanism is positioned at collector casing 20 internal upper part, and the first vibration screen mechanism comprises the first metallic steel skeleton 30 that the first corrosion resistant plate 29 and external form are rectangular structure; On the left of first metallic steel skeleton 30 and right side is all connected with the first triangle skeleton buffer board 32 by the first stiffness spring 31, first stiffness spring 31 is provided with a row along the longitudinal direction, and two the first triangle skeleton buffer boards 32 are separately fixed at the left side of collector casing 20 upper inside wall and right side and the first triangle skeleton buffer board 32 in left side is positioned at below the first triangle skeleton buffer board 32 on right side; The first metal screen 33 that external form is rectangle is provided with bottom first metallic steel skeleton 30, first metal screen 33 right edge is along next-door neighbour the first right edge edge, metallic steel skeleton 30 bottom surface, on front side of first metal screen 33, edge length is less than the first front side edge edge, metallic steel skeleton 30 bottom surface, and the first metal screen 33 is provided with the first rubber buffer plate 34 be positioned at immediately below air water slag mixture inlet 24; First corrosion resistant plate 29 is positioned at below the first metal screen 33 and the first corrosion resistant plate 29 and the first metal screen 33 be arranged in parallel, the front side edge edge of the first corrosion resistant plate 29 and back side edge, along being all fixed on collector casing 20 inwall, have gap between the left side of the first corrosion resistant plate 29 and collector casing 20 inwall; First metallic steel skeleton 30 bottom left and right side are all rotatably connected to the first roller 35, two the first rollers 35 and are all crimped on the first corrosion resistant plate 29 upper surface; First corrosion resistant plate 29 left side edge is provided with first the first through hole 37, first through hole 37 place that baffle plate 36 and next-door neighbour first block water baffle plate 36 that blocks water and is connected with outlet pipe 38 one end, and it is outside that the other end of outlet pipe 38 reaches collector casing 20 from delivery port 26; First power-driven mechanism comprises the first drive motors 39 and the first vibration pull bar 40, it is inner that first drive motors 39 is arranged on collector casing 20, first drive motors 39 main shaft key is connected with the first driving-disc 41, first metallic steel skeleton 30 is provided with the first holder 42, first vibration pull bar 40 one end is hinged on the first holder 42, and first vibration pull bar 40 other end is hinged on the eccentric part of the first driving-disc 41;
Two-stage filter comprises the second vibration screen mechanism and the second power-driven mechanism; Second vibration screen mechanism is positioned at below the first corrosion resistant plate 29, and the second vibration screen mechanism comprises the second metallic steel skeleton 44 that the second corrosion resistant plate 43 and external form are rectangular structure; On the left of second metallic steel skeleton 44 and right side is all connected with the second triangle skeleton buffer board 46 by the second stiffness spring 45, second stiffness spring 45 is provided with a row along the longitudinal direction, and two the second triangle skeleton buffer boards 46 are separately fixed at the left side of collector casing 20 inwall and right side and the second triangle skeleton buffer board 46 in left side is positioned at above the second triangle skeleton buffer board 46 on right side; The second metal screen 47 that external form is rectangle is provided with bottom second metallic steel skeleton 44, second metal screen 47 left side edge is close to the second metallic steel skeleton 44 bottom surface left side edge, on front side of second metal screen 47, edge length is less than the second front side edge edge, metallic steel skeleton 44 bottom surface, and on the left of the second metal screen 47, upper surface is provided with the second rubber buffer plate 48; Two resistance coal baffle plates 23 are between the first metal screen 33 and the second metal screen 47, two resistance coal baffle plate 23 front side edge edges and back side edge are along being all fixed on collector casing 20 inwall, up big and down small pyramidal structure 49 penetrating is up and down formed between two resistance coal baffle plates 23 and collector casing 20 inwall, the upper port of pyramidal structure 49 is close to the first metal screen 33 left side edge, and the lower port of pyramidal structure 49 is close to the second metal screen 47 and is positioned at directly over the second rubber buffer plate 48; Second corrosion resistant plate 43 is positioned at below the second metal screen 47 and the second corrosion resistant plate 43 and the second metal screen 47 be arranged in parallel, the front side edge edge of the second corrosion resistant plate 43 and back side edge, along being all fixed on collector casing 20 inwall, have gap between the left side of the second corrosion resistant plate 43 and collector casing 20 inwall; Second metallic steel skeleton 44 bottom left and right side are all rotatably connected to the second roller 50, two the second rollers 50 and are all crimped on the second corrosion resistant plate 43 upper surface; Second corrosion resistant plate 43 right edge to block water the second through hole 52 of baffle plate 51 along being provided with the second block water baffle plate 51 and next-door neighbour second, collector casing 20 bottom is provided with leads coal slime plate 53 and coal guide plate 54, the front side edge edge of coal guide plate 54 and back side edge are along being fixed on collector casing 20 inwall, the left side edge of coal guide plate 54 is close to the second metal screen 47 right edge edge, leads the lower edge of right edge along next-door neighbour's cinder outlet 27 of coal slime plate 53; Front side edge edge and the back side edge edge of leading coal slime plate 53 are fixed on collector casing 20 inwall, and the left side edge next-door neighbour leading coal slime plate 53 is positioned at below the second through hole 52, lead the lower edge of right edge along next-door neighbour's coal slime outlet 28 of coal slime plate 53; Second power-driven mechanism comprises the second drive motors 55 and the second vibration pull bar 56, it is inner that second drive motors 55 is arranged on collector casing 20, second drive motors 55 main shaft key is connected with the second driving-disc 57, second metallic steel skeleton 44 is provided with the second holder 58, second vibration pull bar 56 one end is hinged on the second holder 58, and second vibration pull bar 56 other end is hinged on the eccentric part of the second driving-disc 57;
Be provided with the brush plate 59 be positioned on the right side of the first through hole 37 bottom first metallic steel skeleton 30, brush plate 59 is provided with hairbrush 60, and hairbrush 60 contacts with the first corrosion resistant plate 29 upper surface
The specific works engineering of water-gas eliminator 4 is: the air water slag first by collecting as gas dust packing device 6 enters collector casing 20 by the air water slag mixture inlet 24 of collector casing 20 top right side, open the exhaust plant be connected with extract opening 25 afterwards, because collector casing 20 is a relative confined space, therefore the gas with gas in collector casing 20 can fully be taken away, the mixture of water and cinder to drop under gravity on the first rubber buffer plate 34 and flows to the first metal screen 33, start the first drive motors 39, under the drive of the first drive motors 39, first driving-disc 41 rotates and drives first vibration pull bar 40 one end to move in a circle, first the first holder 42 vibrated on pull bar 40 other end and the first metallic steel skeleton 30 is hinged, first vibration pull bar 40 pulls the first holder 42 to swing back and forth in left-right direction, first stiffness spring 31 plays the effect of support and connection,
Then the water in mixture through the first metal screen 33 and drop on below the first corrosion resistant plate 29 on, then the water in mixture flows downward along the first corrosion resistant plate 29 tilted, after brush plate 59 further cleaning filtration, flow to through hole, and then flow out from through hole and discharged by delivery port 26 along outlet pipe 38, cinder is under the continuous swing of the first metallic steel skeleton 30 in addition, slowly roll downwards along the first metal screen 33, then pyramidal structure 49 is fallen into from the left side of the first metal screen 33, two resistance coal baffle plates 23 splash down in other places of collector casing 20 for preventing cinder, cinder drops on the second rubber buffer plate 48 along pyramidal structure 49 and flows to the second metal screen 47, when cinder rolls along the second metal screen 47, coal grain less in cinder and water form coal slime, coal slime drops on the second corrosion resistant plate 43 through the second metal screen 47, then the coal slime in mixture flows downward along the second corrosion resistant plate 43 tilted, and then flow out from the second through hole 52 and discharged by coal slime outlet 28 along leading coal slime plate 53,
And coal cinder larger in cinder is under the continuous swing of the second metallic steel skeleton 44, slowly roll downwards along the second metal screen 47, then export 27 from the right side of the second metal screen 47 along coal guide plate 54 from cinder to roll out, complete air water slag detached job to this.
The present embodiment not does any pro forma restriction to shape of the present invention, material, structure etc.; every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all belong to the protection domain of technical solution of the present invention.

Claims (3)

1. in boring, hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting, it is characterized in that: in boring, hydraulic flushing in hole is combined anti-reflection extraction system and comprised hydraulic flushing in hole device, presplit blasting device and gas pumping device with presplit blasting;
Hydraulic flushing in hole device comprises rig, drilling rod, drill bit, high pressure water-injection pump, gas dust packing device and water-gas eliminator, drilling rod upper end is delivery port, drilling rod lower end is water inlet, the delivery port of high pressure water-injection pump is connected with drilling rod water inlet, drilling rod lower end is connected with the clutch end of rig, drilling rod upper end is fixedly connected with drill bit, and gas dust packing device is connected with water-gas separator inlet by pipeline;
Presplit blasting device comprises initiator, steel pipe, lead-in wire and pvc pipe, pvc pipe upper end is inserted in steel pipe, pvc pipe upper end is filled with emulsion, in emulsion, in axial direction 1m is provided with primer detonator, pvc pipe is filled with stemming being positioned at below last primer detonator sealing, goes between after being connected by primer detonator and stretches out from pvc pipe lower end;
Gas pumping device comprises branch's drainage tube, total drainage tube and gas pumping equipment, total drainage tube by after the drainage tube parallel connection of all branches with gas pumping equipment connection, branch's drainage tube is equipped with valve;
Described using method comprises the following steps:
(1) bore position is arranged; In extraction lane to the some blasting boreholes of direction, coal seam interlaced arrangement and punching boring, blasting boreholes and adjacent punching hole between distance be 3-6m;
(2) explosion, at blasting boreholes mouth place, steel pipe is installed, and fill the space between steel pipe and blasting boreholes with cement mortar sealing, treat that cement mortar is solidified and then emulsion is filled in pvc pipe one end, next-door neighbour's emulsion installs primer detonator, then be close to primer detonator and load emulsion, cyclic pac king successively, distance between adjacent primer detonator is 1m, be close to the sealing of last primer detonator place and fill stemming, loading emulsion and installing in the process of primer detonator, adopt lead-in wire by the series connection of all primer detonators and go between and stretch out from pvc pipe lower end, pvc pipe is less than the axial length of blasting boreholes to the length of sealing filling stemming from filling emulsion one end, so far dynamite charge operation is completed, then the pvc pipe after filling is sent into blasting boreholes along steel pipe, then will go between and to be connected with initiator, start initiator and carry out explosion,
(3) preliminary gas pumping; Pvc pipe is extracted out after explosion, and insert branch's drainage tube, the space between branch's drainage tube and steel pipe is filled in sealing, then that total drainage tube is in parallel with all branches drainage tubes, connect gas pumping equipment and total drainage tube, open gas pumping equipment and carry out preliminary gas pumping in blasting boreholes;
(4) preliminary hydraulic flushing in hole; Adopt the hydraulic flushing in hole device hole drilling that liquidates one by one to carry out hydraulic flushing in hole operation, hydraulic flushing in hole, through seat earth, is carried out, until roof from seat earth every 2m point in top, punching hole pumping and mining lane;
(5) waterpower cutting; Start high pressure water-injection pump, operation rig, makes drilling rod move back and forth and drives bit, again carries out hydraulic flushing in hole cutting coal body, crack relief area is formed around boring, full coal section moves back drill bit punching after having rushed, and then Drilling bore bit, moves back drill bit again, circulation like this is not until punching is produced coal, till backwater becomes clearly, when waterpower is cut, start water-gas eliminator and the water cinder flowed out in boring is separated; Hydraulic flushing in hole hydraulic pressure is 8-15MPa; Be suitable for coal seam solid coefficient within 0.5-1.5 scope;
(6) permanent gas pumping; After waterpower cutting operation, close high pressure water-injection pump, exit drilling rod, use cement mortar sealing of hole immediately, extraction borehole adopts wired hose to be connected with total drainage tube, carries out gas pumping.
2. in boring according to claim 1, hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting, it is characterized in that: water-gas eliminator comprises collector casing, first level filtering device, two-stage filter and two resistance coal baffle plates; First level filtering device, two-stage filter and two resistance coal baffle plates are all arranged on collector box house, collector casing is a relative confined space, collector casing top right side is provided with air water slag mixture inlet, collector casing top left side is provided with extract opening, is provided with delivery port, cinder outlet and coal slime outlet bottom collector casing bottom right from top to bottom successively;
First level filtering device comprises the first vibration screen mechanism and the first power-driven mechanism; First vibration screen mechanism is positioned at collector casing internal upper part, and the first vibration screen mechanism comprises the first metallic steel skeleton that the first corrosion resistant plate and external form are rectangular structure; On the left of first metallic steel skeleton and right side is all 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 the left side of collector casing upper inside wall and right side and the first triangle skeleton buffer board in left side is positioned at below the first triangle skeleton buffer board on right side; The first metal screen that external form is rectangle is provided with bottom first metallic steel skeleton, first metal screen right edge is along next-door neighbour the first right edge edge, metallic steel skeleton bottom surface, on front side of first metal screen, edge length is less than the first front side edge edge, metallic steel skeleton bottom surface, and the first metal screen is provided with the first rubber buffer plate be positioned at immediately below air water slag mixture inlet; First corrosion resistant plate is positioned at below the first metal screen and the first corrosion resistant plate and the first metal screen be arranged in parallel, the front side edge edge of the first corrosion resistant plate and back side edge, along being all fixed on collector cabinet wall, have gap between the left side of the first corrosion resistant plate and collector cabinet wall; First metallic steel skeleton bottom left and right side are all rotatably connected to the first roller, and two the first rollers are all crimped on the first corrosion resistant plate upper surface; First corrosion resistant plate left side edge is provided with first and blocks water the first through hole that baffle plate and next-door neighbour first block water baffle plate, and the first through hole is connected with outlet pipe one end, and the other end of outlet pipe reaches collector box external body from delivery port; First power-driven mechanism comprises the first drive motors and the first vibration pull bar, first drive motors is arranged on collector box house, first drive motors main shaft key is connected with the first driving-disc, first metallic steel skeleton is provided with the first holder, first vibration pull bar one end is hinged on the first holder, and the first vibration pull bar other end is hinged on the eccentric part of the first driving-disc;
Two-stage filter comprises the second vibration screen mechanism and the second power-driven mechanism; Second vibration screen mechanism is positioned at below the first corrosion resistant plate, and the second vibration screen mechanism comprises the second metallic steel skeleton that the second corrosion resistant plate and external form are rectangular structure; On the left of second metallic steel skeleton and right side is all 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 the left side of collector cabinet wall and right side and the second triangle skeleton buffer board in left side is positioned at above the second triangle skeleton buffer board on right side; The second metal screen that external form is rectangle is provided with bottom second metallic steel skeleton, second metal screen left side edge is close to the second metallic steel skeleton bottom surface left side edge, on front side of second metal screen, edge length is less than the second front side edge edge, metallic steel skeleton bottom surface, and on the left of the second metal screen, upper surface is provided with the second rubber buffer plate; Two resistance coal baffle plates are between the first metal screen and the second metal screen, two resistance coal baffle plate front side edge edges and back side edge are along being all fixed on collector cabinet wall, up big and down small pyramidal structure penetrating is up and down formed between two resistance coal baffle plates and collector cabinet wall, the upper port of pyramidal structure is close to the first metal screen left side edge, and the lower port of pyramidal structure is close to the second metal screen and is positioned at directly over the second rubber buffer plate; Second corrosion resistant plate is positioned at below the second metal screen and the second corrosion resistant plate and the second metal screen be arranged in parallel, the front side edge edge of the second corrosion resistant plate and back side edge, along being all fixed on collector cabinet wall, have gap between the left side of the second corrosion resistant plate and collector cabinet wall; Second metallic steel skeleton bottom left and right side are all rotatably connected to the second roller, and two the second rollers are all crimped on the second corrosion resistant plate upper surface; Second corrosion resistant plate right edge to block water the second through hole that baffle plate and next-door neighbour second block water baffle plate along being provided with second, collector lower box is provided with leads coal slime plate and coal guide plate, the front side edge edge of coal guide plate and back side edge are along being fixed on collector cabinet wall, the left side edge of coal guide plate is close to the second metal screen right edge edge, leads the lower edge of right edge along the outlet of next-door neighbour's cinder of coal slime plate; Front side edge edge and the back side edge edge of leading coal slime plate are fixed on collector cabinet wall, and the left side edge next-door neighbour leading coal slime plate is positioned at below the second through hole, lead the lower edge of right edge along the outlet of next-door neighbour's coal slime of coal slime plate; Second power-driven mechanism comprises the second drive motors and the second vibration pull bar, second drive motors is arranged on collector box house, second drive motors main shaft key is connected with the second driving-disc, second metallic steel skeleton is provided with the second holder, second vibration pull bar one end is hinged on the second holder, and the second vibration pull bar other end is hinged on the eccentric part of the second driving-disc.
3. in boring according to claim 2, hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting, it is characterized in that: bottom the first metallic steel skeleton, be provided with the brush plate be positioned on the right side of the first through hole, brush plate is provided with hairbrush, and hairbrush contacts with the first corrosion resistant 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 Active CN105507938B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201511012857.6A CN105507938B (en) 2015-12-31 2015-12-31 Hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting in drilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201511012857.6A CN105507938B (en) 2015-12-31 2015-12-31 Hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting in drilling

Publications (2)

Publication Number Publication Date
CN105507938A true CN105507938A (en) 2016-04-20
CN105507938B CN105507938B (en) 2017-12-22

Family

ID=55716200

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201511012857.6A Active CN105507938B (en) 2015-12-31 2015-12-31 Hydraulic flushing in hole combines the construction method of anti-reflection extraction system with presplit blasting in drilling

Country Status (1)

Country Link
CN (1) CN105507938B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106121644A (en) * 2016-06-17 2016-11-16 中国矿业大学 Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and supporting reinforcement
CN106321049A (en) * 2016-09-27 2017-01-11 吴拥政 Method and device for optimizing mining stopping line position with hydrofracture pressure relieving
CN106884656A (en) * 2017-03-31 2017-06-23 中国矿业大学 A kind of explosion water filling coupling softens coal body preventing and treating impulsion pressure method
CN107152302A (en) * 2017-06-29 2017-09-12 重庆大学 Cut the uniform permeability-increasing gas pumping method of pressure in a kind of complex geological structure coal seam
CN109578054A (en) * 2018-10-25 2019-04-05 四川大学 The anti-reflection extraction system in coal seam in a kind of drilling
CN109723487A (en) * 2019-01-15 2019-05-07 高九华 Air pulsing quantum energy is implanted into presplitting permeability-increasing gas pumping method and device
CN109736765A (en) * 2019-01-15 2019-05-10 辽宁大学 A kind of exploitation fluid injection of coal seam hydraulic slotted liner technique is combined with extraction integration prevention and treatment composite power disaster method and matching used wetting agent
CN110541696A (en) * 2019-07-15 2019-12-06 河南理工大学 carbon dioxide blasting-hydraulic fracturing reconstruction yield increasing method for oil and gas well
WO2019242191A1 (en) * 2018-06-22 2019-12-26 中国矿业大学 Hydraulic cutting seam and multistage combustion shock wave combined coal-fracturing gas extraction method
CN112963125A (en) * 2021-03-16 2021-06-15 重庆大学 Hydraulic punching and CO hole making2Method for extracting coal seam gas by explosion fracturing displacement synergistic strengthening

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104131832A (en) * 2014-07-14 2014-11-05 中国矿业大学 High-gas-content coal seam punching cutting pressing and sucking integral pressure relief and antireflection gas extraction method
CN104533513A (en) * 2015-01-07 2015-04-22 河南理工大学 High-pressure abrasive material gas jet coal-breaking pressure relief and permeability improvement equipment and method
CN104563990A (en) * 2015-01-06 2015-04-29 中国矿业大学 Drilling and blanking integrated and heat injection coordinated enhancing method for extracting coal seam gas
CN104819008A (en) * 2015-04-17 2015-08-05 陕西福瑞德石油科技有限公司 Efficient extraction method of coal seam gas

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104131832A (en) * 2014-07-14 2014-11-05 中国矿业大学 High-gas-content coal seam punching cutting pressing and sucking integral pressure relief and antireflection gas extraction method
CN104563990A (en) * 2015-01-06 2015-04-29 中国矿业大学 Drilling and blanking integrated and heat injection coordinated enhancing method for extracting coal seam gas
CN104533513A (en) * 2015-01-07 2015-04-22 河南理工大学 High-pressure abrasive material gas jet coal-breaking pressure relief and permeability improvement equipment and method
CN104819008A (en) * 2015-04-17 2015-08-05 陕西福瑞德石油科技有限公司 Efficient extraction method of coal seam gas

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
顾德祥: "低透气性突出煤层强化增透瓦斯抽采技术研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106121644A (en) * 2016-06-17 2016-11-16 中国矿业大学 Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and supporting reinforcement
CN106121644B (en) * 2016-06-17 2018-05-29 中国矿业大学 The water-filling pressure-bearing unloading pressure by blasting of cellular structure and supporting reinforcement are crosslinked based on drilling in coal and rock plane
CN106321049A (en) * 2016-09-27 2017-01-11 吴拥政 Method and device for optimizing mining stopping line position with hydrofracture pressure relieving
CN106884656A (en) * 2017-03-31 2017-06-23 中国矿业大学 A kind of explosion water filling coupling softens coal body preventing and treating impulsion pressure method
CN107152302B (en) * 2017-06-29 2019-11-01 重庆大学 A kind of complex geological structure coal seam cut the uniform permeability-increasing gas pumping method of pressure
CN107152302A (en) * 2017-06-29 2017-09-12 重庆大学 Cut the uniform permeability-increasing gas pumping method of pressure in a kind of complex geological structure coal seam
RU2735711C1 (en) * 2018-06-22 2020-11-06 Чайна Юниверсити Оф Майнинг Энд Текнолоджи Method of extracting gas by loosening a coal bed by combining hydraulic cutting of grooves and combustion shock wave acting in several steps
WO2019242191A1 (en) * 2018-06-22 2019-12-26 中国矿业大学 Hydraulic cutting seam and multistage combustion shock wave combined coal-fracturing gas extraction method
US11131172B2 (en) 2018-06-22 2021-09-28 China University Of Mining And Technology Method for extracting gas by fracturing coal seam through combination of hydraulic slotting and multi-stage combustion impact wave
CN109578054A (en) * 2018-10-25 2019-04-05 四川大学 The anti-reflection extraction system in coal seam in a kind of drilling
CN109723487A (en) * 2019-01-15 2019-05-07 高九华 Air pulsing quantum energy is implanted into presplitting permeability-increasing gas pumping method and device
CN109736765A (en) * 2019-01-15 2019-05-10 辽宁大学 A kind of exploitation fluid injection of coal seam hydraulic slotted liner technique is combined with extraction integration prevention and treatment composite power disaster method and matching used wetting agent
CN110541696A (en) * 2019-07-15 2019-12-06 河南理工大学 carbon dioxide blasting-hydraulic fracturing reconstruction yield increasing method for oil and gas well
CN112963125A (en) * 2021-03-16 2021-06-15 重庆大学 Hydraulic punching and CO hole making2Method for extracting coal seam gas by explosion fracturing displacement synergistic strengthening

Also Published As

Publication number Publication date
CN105507938B (en) 2017-12-22

Similar Documents

Publication Publication Date Title
CN105507938A (en) Construction method of hydraulic flushing and presplit blasting combined permeability-increasing extraction system in drill holes
CN101915083B (en) Method for extracting coalbed gases from coal mines by upper and lower combination
CN106194244B (en) Lower permeability seam liquid phase CO2Phase transformation fracturing is anti-reflection grid type gas pumping method
CN104653161A (en) Coal mine underground pulse hydraulic slot cutting-fracturing integral anti-reflection extraction device and method
CN102817603B (en) A kind of method being communicated with ground and underground coal seam gas
CN103790589B (en) Transition connection mining technique from outdoor mine to underground mine
CN103195468A (en) System process for conducting efficient strengthened extraction in surrounding rock
CN106014473B (en) A kind of cross borehole constrained expansion explosion network permeability-increasing gas drainage method
CN106195616B (en) A kind of liquid CO 2 bulking system
CN104895531A (en) Single thick coal seam ground mining well extraction process
CN205638458U (en) Accelerate construction structures of broken system construction speed of underground swift current
CN104594870A (en) Fracturing stimulation method
CN109209293A (en) A kind of crossdrift takes off projecting coal bed comprehensive outburst control construction method
CN107420127A (en) A kind of discarded coal mine ground destressing borehole gas control new technology
CN110145293B (en) Poly-generation well-free underground coal gasification method
CN107816365A (en) A kind of quick-fried pumping integration anti-burst method of coal seam drilling
CN205297636U (en) Anti -reflection drainage system in coal seam in drilling
CN102777185A (en) Inclined well shaft construction technology
CN105507872B (en) Hydraulic flushing in hole combines anti-reflection extraction system with presplit blasting in layer-through drilling
RU2387784C1 (en) Method for preliminary degassing of coal beds
JP2021510398A (en) How to release water and coal layer gas together
RU2487246C1 (en) Method to degas coal-bearing series
CN109162676B (en) Method for simultaneously extracting and utilizing coal bed gas and accumulated water in goaf
CN110067597A (en) A kind of mine angle of depression negative pressure visits the method for putting old dead zone ponding
CN204327172U (en) Formula boring goaf extraction structure before and after high-rise position

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
GR01 Patent grant