CN108086945A - A kind of layer-through drilling separate type whole process gas drainage hole sealing device and its method for sealing - Google Patents

A kind of layer-through drilling separate type whole process gas drainage hole sealing device and its method for sealing Download PDF

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Publication number
CN108086945A
CN108086945A CN201810056272.1A CN201810056272A CN108086945A CN 108086945 A CN108086945 A CN 108086945A CN 201810056272 A CN201810056272 A CN 201810056272A CN 108086945 A CN108086945 A CN 108086945A
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hole
drilling
sealing
pouch
tube
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CN108086945B (en
Inventor
仝耀军
丁剑
刘圣洁
侯尚武
白明锴
段李宏
王振广
姚春雨
孙建
韦晶
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Henan Yongjin Energy Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/13Methods or devices for cementing, for plugging holes, crevices or the like
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK 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

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Earth Drilling (AREA)

Abstract

The invention discloses a kind of layer-through drilling separate type whole process gas drainage hole sealing device and its method for sealing, which includes:The drilling in coal seam is drilled with, drill tip is two1The drilling gas chamber of the formation in coal seam, drilling gas chamber is provided with hole sealing tube in inner cavity, drilling lower end is provided with lower hole sealing tube, sealing of hole pipe fixing device is arranged on the tube wall of upper hole sealing tube, upper hole sealing tube is sent into the top of drilling gas chamber by push rod, pouch and lower pouch are provided in the cavity that the inner tubal wall of the outer tube wall of lower hole sealing tube and drilling gas chamber is formed, the middle cavity that upper pouch and lower pouch are formed is filled with expansion slurry, lower hole sealing tube is equipped with Grouting Pipe, expansion slurry is injected by Grouting Pipe, the method for sealing is used arranges hole sealing tube in drilling gas chamber position to coal section is worn, lower hole sealing tube is using " a two stifled notes " sealing of hole with pressure, the intermediate rock section using drilling carries out extraction, it is good to reach sealing of hole air-tightness, be not easy gas leakage reduces sealing of hole cost savings drilling cost simultaneously.

Description

A kind of layer-through drilling separate type whole process gas drainage hole sealing device and its method for sealing
Technical field
Present invention relates particularly to a kind of layer-through drilling separate type whole process gas drainage hole sealing device and its method for sealing.
Background technology
Mine gas is one of principal element of serious threat Safety of Coal Mine Production.Gas explosion and Gas Outburst are current The disaster in colliery most, cause many casualties and huge property loss every year.Therefore, prevention Gas Disaster is to drop Low coal mining accident, coal industry healthy and sustainable development of guaranteeing the quality, are of great significance.
Coal mine gas drainage is exactly to gather region to coal seam or gas to drill, and drilling is connected on dedicated pipeline, with pumping It adopts equipment and the gas in coal seam and goaf is evacuated to ground, be used;Mash gas extraction can be reduced during exploiting colliery Gas emission prevents gas exceeding limit, the important measures of pre- anti-gas explosion and coal and gas prominent accident.In addition, gas is Good eco-friendly power source, the gas of extraction can be used as fuel, for civilian and power generation, while be also important industrial chemicals, make Gas turns bane into boon, and turns waste into wealth, and gas is developed as the resource of coal association, can create huge value, Improve the utilization rate of resource.Therefore gas pumping has great importance.
However hole sealing tube gas drainage hole sealing device under traditional whole process is used, performing the cooperation of floor roadway layer-through drilling During technology that hydraulic flushing in hole is anti-reflection takes out strip coal layer gas region outburst prevention measures in advance, occur that extraction concentration is low, flux depression is fast The problems such as, perform it is whole under after hole sealing tube sealing of hole, the lower hole sealing tube of whole process there are hole sealing tube docking time it is long, in drilling Nei Yituo Fall, the problems such as consumptive material is more, of high cost.
Therefore, production is a kind of simple in structure, and design is reasonable, and air-tightness is good, and sealing of hole is air tight, and extraction is stablized, and consumptive material is few, into This is low, while can improve gas pumping purity, and reduces the layer-through drilling separate type whole process gas pumping envelope of the leakage of gas Aperture apparatus and its method for sealing have extensive market prospects.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides simple in structure, and design is reasonable, and air-tightness is good, and sealing of hole is air tight, takes out Stabilization is put, consumptive material is few, at low cost, while can improve gas pumping purity, and reduces the layer-through drilling separation of the leakage of gas Formula whole process gas drainage hole sealing device and its method for sealing.
The technical proposal of the invention is realized in this way:
A kind of layer-through drilling separate type whole process gas drainage hole sealing device, including:It is drilled with the drilling in coal seam, the drilling Top is two1The drilling gas chamber of the formation in coal seam, it is characterised in that:Hole sealing tube is provided in the drilling gas chamber inner cavity, Drilling lower end is provided with lower hole sealing tube, offers hole on the upper hole sealing tube, non-porous, the top of upper hole sealing tube on lower hole sealing tube Pyramid type plug is provided with, sealing of hole pipe fixing device is arranged on the tube wall of upper hole sealing tube, upper hole sealing tube is headed on by push rod Upper hole sealing tube is sent into the top of drilling gas chamber by pyramid type plug, and the outer tube wall of lower hole sealing tube and the inner tubal wall for the gas chamber that drills are formed Cavity in be provided with pouch and lower pouch, filled with expansion slurry, upper pouch and lower pouch shape in upper pouch and lower pouch Into middle cavity filled with expansion slurry, lower hole sealing tube is equipped with Grouting Pipe, is equipped with valve in Grouting Pipe, passes through Grouting Pipe Injection expansion slurry.
The sealing of hole pipe fixing device is cotton pouch, is provided with slide fastener in cotton pouch, injects poly- ammonia by slide fastener Ester.
The cotton pouch is set on sealing of hole tube wall, the diameter of cotton pouch according to the diameter of upper hole sealing tube come It determines.
The push rod is that metal push rod is made using hollow alloy pipe.
The push rod is that several sections of φ are 10mm, and the small push rod that d is 1m is spliced, the small push rod Two ends are equipped with quick coupling, and one end is female connector, and the other end realizes rapid abutting joint for pin end.
The expansion slurry is expanding cement.
A kind of its method for sealing of layer-through drilling separate type whole process gas pumping, it is characterised in that:
The method comprises the following steps:
Step 1:Seeing position drilling of below the coal point 1~2m positions without cranny development so that the diameter of drilling reaches 94mm, wears It crosses coal seam and enters 1~2m of coal seam and stop boring, since gas is lighter, is just gathered in the space of 1~2m of drilling top and forms drilling gas Room;
Step 2:Drilling is drilled, and after acceptance(check), prepares upper hole sealing tube corresponding with drilling gas chamber coal segment length, upper hole sealing tube A diameter of 50mm, according to the drilling gas chamber formed determine drilling gas chamber in without coal slime be detained hole wall at position height come Determine the position for the upper hole sealing tube that sealing of hole pipe fixing device is arranged, no coal slime is detained at hole wall and is suitble to fill out in sealing of hole pipe fixing device The polyurethane expansion and solidification filled;
Step 3:The position that sealing of hole pipe fixing device according to being determined in step 2 is arranged, by a diameter of 65~70mm cottons pouch Sealing of hole pipe fixing device be set on hole sealing tube, at the hole sealing tube of fixed position wind it is a few circle paper self-adhesive tapes prevent lower slippage Fall;The slide fastener of sealing of hole pipe fixing device is opened, the polyurethane of 20~30g is taken to be allowed to mix under hand rubbing 3~5, passes through slide fastener mouth After pouring into sealing of hole pipe fixing device, slide fastener is closed;
Step 4:According to the length of drilling, several sections of small push rod is installed by quick coupling is more than the total length of push rod Drill the length of gas chamber, and the metal push rod spliced using this is withstood the pyramid type plug of upper hole sealing tube and will pacified in step 3 Upper hole sealing tube equipped with sealing of hole pipe fixing device is sent into the drilling gas chamber of drill tip, after 5~15min, treats to inject in step 3 Polyurethane expanded diameter reach 120~150mm, can be pressurized after 2~3MPa, recall metal push rod;
Step 5:Pouch on one is fixed at distance drilling nozzle 9m, hole sealing tube under being inserted among capsule, and drill in distance A lower pouch is fixed at nozzle 1m again so that two pouches form an envelope with the inner wall of drilling gas chamber and lower sealing of hole pipe outer wall The cavity closed connects Grouting Pipe in lower pouch;
Step 6:Expanding cement is poured into agitator, the ratio 1 with water:0.8 is stirred into paste, by portable grouting pump Pulp absorbing hole is immersed in agitator, and the grout outlet of grouting pump is connected with Grouting Pipe, and slip casting is worked as in slip casting in the cavity into step 5 When pump pressure reaches 1.5MPa and no longer rises, stop slip casting;
Step 8:After the grout outlet of grouting pump is pulled up from Grouting Pipe, valve in Grouting Pipe is closed, tube sealing terminates.
The present invention has following good effect:A kind of layer-through drilling separate type whole process gas pumping sealing of hole dress of the present invention It puts, drilling two ends set hole sealing tube respectively, and hole is disposed with to coal section is worn in " drilling gas chamber " position that the top of drilling is formed Upper tube sealing, see on the non-porous position of the upper hole sealing tube below coal point installation sealing of hole pipe fixing device, and pushed away using self-control metal It send bar that upper hole sealing tube is sent into roof, after the polyurethane freezing by expansion of filling in sealing of hole pipe fixing device, withdraws metal Push rod, is provided with pouch and lower pouch on the lower hole sealing tube of the lower end of drilling, filled with expansion in upper pouch and lower pouch Slurry, for the middle cavity that upper pouch and lower pouch are formed filled with expansion slurry, lower hole sealing tube is equipped with Grouting Pipe, in Grouting Pipe Valve is installed, is injected by Grouting Pipe and expands slurry, for the lower hole sealing tube using " a two stifled notes " sealing of hole with pressure, centre utilizes brill The rock section in hole carries out extraction, reaches that possess sealing of hole air-tightness good, and the characteristics of being not easy gas leakage while reduces sealing of hole expense, so as to Save drilling construction cost.
In addition, the invention has the following advantages that:
1. crossing extraction amount statistics, separate type sealing of hole and the lower hole sealing tube sealing of hole extracting result of whole process are more preferable, extraction purity higher;
2. in sealing of hole cost, the single hole sealing of hole expense of separate type sealing of hole hole sealing tube sealing of hole more lower than the whole process every group of drilling and sealing that be averaged takes With reduction by 39.1%;
3. layer-through drilling separate type whole process gas drainage hole sealing device and method, possess that sealing of hole air-tightness is good, the spy of gas leakage is not easy Point is just taken out concentration and is met《Prevent coal and gas prominent regulation》50th article " Gas pre-drainage concentration is not less than 30% regulation "
4. it can be applicable from formula hole-sealing technology under similar gas geological conditions.
In summary:The invention has simple in structure, and design is reasonable, and easy to operate, air-tightness is good, and sealing of hole is air tight, takes out Stabilization is put, consumptive material is few, at low cost, while can improve gas pumping purity, and reduces the advantageous effect of the leakage of gas.
Description of the drawings
Fig. 1 is one of main structure schematic diagram of the present invention.
Fig. 2 is one of another angle main structure schematic diagram of the present invention.
Fig. 3 is the structure diagram of sealing of hole pipe fixing device in the present invention.
Fig. 4 is the structure diagram of the upper tube sealing of metal push rod push in the present invention.
Fig. 5 is the present invention and traditional totally-enclosed group of extraction mixed traffic comparison diagram.
Fig. 6 is the present invention and traditional totally-enclosed group of extraction comparison or purity figure.
In figure:1 drilling, 1-1 drilling gas chambers, 3 roofs, 4 two1Coal seam, 5 seat earths, 6 hydraulic flushing in hole influence model It encloses, hole sealing tube on 2,2-1 pyramid type plugs, 7 sealing of hole pipe fixing devices, 7-1 cotton pouches, 7-2 slide fasteners, 9 times hole sealing tubes, 11 Grouting Pipe, 10 expanding cements, pouch on 12,13 times pouches, 14 push rod, 14-1 quick couplings.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1
As shown in figs. 1 to 6, a kind of layer-through drilling separate type whole process gas drainage hole sealing device, including:It is drilled with the brill in coal seam Hole 1,1 top of drilling is two1The formation drilling gas chamber 1-1 in coal seam, is provided in the drilling gas chamber 1-1 inner cavities Hole sealing tube 2,1 lower end of drilling are provided with lower hole sealing tube 9, offer hole on the upper sealing of hole 2, non-porous, upper envelope on lower hole sealing tube 9 The top of hole pipe 2 is provided with conical plug 2-1, and sealing of hole pipe fixing device 7, upper hole sealing tube 2 are arranged on upper 2 tube wall of hole sealing tube The top that upper hole sealing tube 2 is sent into drilling gas chamber 1-1 by conical plug 2-1, the outer tube of lower hole sealing tube 9 are headed on by push rod 14 Pouch 12 and lower pouch 13, upper pouch 12 and lower pouch are provided in the cavity that the inner tubal wall of wall and drilling gas chamber 1-1 are formed The middle cavity formed in 13 filled with expansion slurry, upper pouch 12 and lower pouch 13 is filled with expansion slurry, lower hole sealing tube 9 Grouting Pipe 11 is equipped with through lower pouch 13, valve is installed in Grouting Pipe 11, expansion slurry is injected by Grouting Pipe 11.It is described Sealing of hole pipe fixing device 7 for cotton pouch 7-1, be provided with slide fastener 7-2 on cotton pouch 7-1, pass through slide fastener 7-2 and inject poly- ammonia Ester, the cotton pouch 7-1 are set on 2 tube wall of hole sealing tube, and the diameter of cotton pouch 7-1 is according to the straight of upper hole sealing tube 2 Footpath determines that the push rod 14 is that metal push rod is made using hollow alloy pipe, and the push rod 14 is several Section φ is 10mm, and the small push rod that d is 1m is spliced, and the two ends of the small push rod are equipped with quick coupling, one end For female connector, the other end realizes rapid abutting joint for pin end, and the expansion slurry is expanding cement.
A kind of its method for sealing of layer-through drilling separate type whole process gas pumping, the method comprise the following steps:
Step 1:Seeing position drilling 1 of below the coal point 1m positions without cranny development so that 1 diameter of drilling reaches 94mm, wears It crosses coal seam and enters coal seam 1m and stop boring, since gas is lighter, is just gathered in the space of 1 top 1m of drilling and forms drilling gas chamber 1-1;
Step 2:Drilling 1 is drilled, and after acceptance(check), prepares upper hole sealing tube 2 corresponding with drilling gas chamber 1-1 coal segment length, upper envelope A diameter of 50mm of hole pipe 2 is determined in drilling gas chamber 1-1 according to the drilling gas chamber 1-1 formed and is detained hole wall without coal slime The position height at place determines the position of upper hole sealing tube 2 that sealing of hole pipe fixing device 7 is arranged, and no coal slime is detained at hole wall and is suitble to seal The polyurethane expansion and solidification of filling in hole pipe fixing device 7;
Step 3:The position that sealing of hole pipe fixing device 7 according to being determined in step 2 is arranged, by a diameter of 65mm cottons pouch 7-1 Sealing of hole pipe fixing device 7 be set on hole sealing tube 2, at the upper hole sealing tube 2 of fixed position wind it is a few circle paper self-adhesive tapes prevent Downslide comes off;The slide fastener 7-2 of sealing of hole pipe fixing device 7 is opened, the polyurethane of 20g is taken to be allowed to mix under hand rubbing 4, passes through slide fastener After 7-2 mouthfuls are poured into sealing of hole pipe fixing device 7, slide fastener 7-2 is closed;
Step 4:According to the length of drilling 1, several sections of small push rod is installed by quick coupling 14-1 makes push rod 14-1's Total length is more than the length of drilling 1, and the metal push rod 14-1 spliced using this withstands the pyramid type plug of upper hole sealing tube 2 After the upper hole sealing tube 2 that sealing of hole pipe fixing device 7 is equipped in step 3 is sent into drilling the gas chamber 1-1,5min of drilling 1 by 2-1, treat The polyurethane expanded diameter injected in step 3 reaches 120mm, can be pressurized after 2MPa, recalls metal push rod 14;
Step 5:Pouch 12 on one is fixed at the nozzle 9m of distance drilling 1, the hole sealing tube 9 under insertion among upper pouch 12, And fix a lower pouch 13 again at the nozzle 1m of distance drilling 1, lower hole sealing tube 9 passes through lower pouch 13 so that two pouches The cavity of a closing is formed with the inner wall of drilling 1 and lower 9 outer wall of hole sealing tube, Grouting Pipe 11, slip casting are connected in lower pouch 13 Pipe 11 is inserted into cavity;
Step 6:Expanding cement is poured into agitator, the ratio 1 with water:0.8 is stirred into paste, by portable grouting pump Pulp absorbing hole is immersed in agitator, and the grout outlet of grouting pump is connected with Grouting Pipe 11, and note is worked as in slip casting in the cavity into step 5 When slurry pump pressure reaches 1.5MPa and no longer rises, stop slip casting;
Step 8:After the grout outlet of grouting pump is pulled up from Grouting Pipe 11, valve in Grouting Pipe 11 is closed, tube sealing terminates.
Embodiment 2
As shown in figs. 1 to 6, a kind of layer-through drilling separate type whole process gas drainage hole sealing device, including:It is drilled with the brill in coal seam Hole 1,1 top of drilling is two1The formation drilling gas chamber 1-1 in coal seam, is provided in the drilling gas chamber 1-1 inner cavities Hole sealing tube 2,1 lower end of drilling are provided with lower hole sealing tube 9, offer hole on the upper sealing of hole 2, non-porous, upper envelope on lower hole sealing tube 9 The top of hole pipe 2 is provided with conical plug 2-1, and sealing of hole pipe fixing device 7, upper hole sealing tube 2 are arranged on upper 2 tube wall of hole sealing tube The top that upper hole sealing tube 2 is sent into drilling gas chamber 1-1 by conical plug 2-1, the outer tube of lower hole sealing tube 9 are headed on by push rod 14 Pouch 12 and lower pouch 13, upper pouch 12 and lower pouch are provided in the cavity that the inner tubal wall of wall and drilling gas chamber 1-1 are formed The middle cavity formed in 13 filled with expansion slurry, upper pouch 12 and lower pouch 13 is filled with expansion slurry, lower hole sealing tube 9 Grouting Pipe 11 is equipped with through lower pouch 13, valve is installed in Grouting Pipe 11, expansion slurry is injected by Grouting Pipe 11.It is described Sealing of hole pipe fixing device 7 for cotton pouch 7-1, be provided with slide fastener 7-2 on cotton pouch 7-1, pass through slide fastener 7-2 and inject poly- ammonia Ester, the cotton pouch 7-1 are set on 2 tube wall of hole sealing tube, and the diameter of cotton pouch 7-1 is according to the straight of upper hole sealing tube 2 Footpath determines that the push rod 14 is that metal push rod is made using hollow alloy pipe, and the push rod 14 is several Section φ is 10mm, and the small push rod that d is 1m is spliced, and the two ends of the small push rod are equipped with quick coupling, one end For female connector, the other end realizes rapid abutting joint for pin end, and the expansion slurry is expanding cement.
A kind of its method for sealing of layer-through drilling separate type whole process gas pumping, the method comprise the following steps:
Step 1:Seeing position drilling 1 of below the coal point 1.2m positions without cranny development so that 1 diameter of drilling reaches 94mm, Enter coal seam 1.2m through coal seam to stop boring, since gas is lighter, drilling is formed in the space for the top 1.2m for being just gathered in drilling 1 Gas chamber 1-1;
Step 2:Drilling 1 is drilled, and after acceptance(check), prepares upper hole sealing tube 2 corresponding with drilling gas chamber 1-1 coal segment length, upper envelope A diameter of 50mm of hole pipe 2 is determined in drilling gas chamber 1-1 according to the drilling gas chamber 1-1 formed and is detained hole wall without coal slime The position height at place determines the position of upper hole sealing tube 2 that sealing of hole pipe fixing device 7 is arranged, and no coal slime is detained at hole wall and is suitble to seal The polyurethane expansion and solidification of filling in hole pipe fixing device 7;
Step 3:The position that sealing of hole pipe fixing device 7 according to being determined in step 2 is arranged, by a diameter of 67mm cottons pouch 7-1 Sealing of hole pipe fixing device 7 be set on hole sealing tube 2, at the upper hole sealing tube 2 of fixed position wind it is a few circle paper self-adhesive tapes prevent Downslide comes off;The slide fastener 7-2 of sealing of hole pipe fixing device 7 is opened, the polyurethane of 22g is taken to be allowed to mix under hand rubbing 3, passes through slide fastener After 7-2 mouthfuls are poured into sealing of hole pipe fixing device 7, slide fastener 7-2 is closed;
Step 4:According to the length of drilling 1, several sections of small push rod is installed by quick coupling 14-1 makes push rod 14-1's Total length is more than the length of drilling 1, and the metal push rod 14-1 spliced using this withstands the pyramid type plug of upper hole sealing tube 2 After the upper hole sealing tube 2 that sealing of hole pipe fixing device 7 is equipped in step 3 is sent into drilling the gas chamber 1-1,5min of drilling 1 by 2-1, treat The polyurethane expanded diameter injected in step 3 reaches 140mm, can be pressurized after 2.2MPa, recalls metal push rod 14;
Step 5:Pouch 12 on one is fixed at the nozzle 9m of distance drilling 1, the hole sealing tube 9 under insertion among upper pouch 12, And fix a lower pouch 13 again at the nozzle 1m of distance drilling 1, lower hole sealing tube 9 passes through lower pouch 13 so that two pouches The cavity of a closing is formed with the inner wall of drilling 1 and lower 9 outer wall of hole sealing tube, Grouting Pipe 11, slip casting are connected in lower pouch 13 Pipe 11 is inserted into cavity;
Step 6:Expanding cement is poured into agitator, the ratio 1 with water:0.8 is stirred into paste, by portable grouting pump Pulp absorbing hole is immersed in agitator, and the grout outlet of grouting pump is connected with Grouting Pipe 11, and note is worked as in slip casting in the cavity into step 5 When slurry pump pressure reaches 1.5MPa and no longer rises, stop slip casting;
Step 8:After the grout outlet of grouting pump is pulled up from Grouting Pipe 11, valve in Grouting Pipe 11 is closed, tube sealing terminates.
Embodiment 3
As shown in figs. 1 to 6, a kind of layer-through drilling separate type whole process gas drainage hole sealing device, including:It is drilled with the brill in coal seam Hole 1,1 top of drilling is two1The formation drilling gas chamber 1-1 in coal seam, is provided in the drilling gas chamber 1-1 inner cavities Hole sealing tube 2,1 lower end of drilling are provided with lower hole sealing tube 9, offer hole on the upper sealing of hole 2, non-porous, upper envelope on lower hole sealing tube 9 The top of hole pipe 2 is provided with conical plug 2-1, and sealing of hole pipe fixing device 7, upper hole sealing tube 2 are arranged on upper 2 tube wall of hole sealing tube The top that upper hole sealing tube 2 is sent into drilling gas chamber 1-1 by conical plug 2-1, the outer tube of lower hole sealing tube 9 are headed on by push rod 14 Pouch 12 and lower pouch 13, upper pouch 12 and lower pouch are provided in the cavity that the inner tubal wall of wall and drilling gas chamber 1-1 are formed The middle cavity formed in 13 filled with expansion slurry, upper pouch 12 and lower pouch 13 is filled with expansion slurry, lower hole sealing tube 9 Grouting Pipe 11 is equipped with through lower pouch 13, valve is installed in Grouting Pipe 11, expansion slurry is injected by Grouting Pipe 11.It is described Sealing of hole pipe fixing device 7 for cotton pouch 7-1, be provided with slide fastener 7-2 on cotton pouch 7-1, pass through slide fastener 7-2 and inject poly- ammonia Ester, the cotton pouch 7-1 are set on 2 tube wall of hole sealing tube, and the diameter of cotton pouch 7-1 is according to the straight of upper hole sealing tube 2 Footpath determines that the push rod 14 is that metal push rod is made using hollow alloy pipe, and the push rod 14 is several Section φ is 10mm, and the small push rod that d is 1m is spliced, and the two ends of the small push rod are equipped with quick coupling, one end For female connector, the other end realizes rapid abutting joint for pin end, and the expansion slurry is expanding cement.
A kind of its method for sealing of layer-through drilling separate type whole process gas pumping, the method comprise the following steps:
Step 1:Seeing position drilling 1 of below the coal point 1.5m positions without cranny development so that 1 diameter of drilling reaches 94mm, Enter coal seam 1.5m through coal seam to stop boring, since gas is lighter, is just gathered in the space of 1 top 1.5m of drilling and forms drilling gas Room 1-1;
Step 2:Drilling 1 is drilled, and after acceptance(check), prepares upper hole sealing tube 2 corresponding with drilling gas chamber 1-1 coal segment length, upper envelope A diameter of 50mm of hole pipe 2 is determined in drilling gas chamber 1-1 according to the drilling gas chamber 1-1 formed and is detained hole wall without coal slime The position height at place determines the position of upper hole sealing tube 2 that sealing of hole pipe fixing device 7 is arranged, and no coal slime is detained at hole wall and is suitble to seal The polyurethane expansion and solidification of filling in hole pipe fixing device 7;
Step 3:The position that sealing of hole pipe fixing device 7 according to being determined in step 2 is arranged, by a diameter of 66mm cottons pouch 7-1 Sealing of hole pipe fixing device 7 be set on hole sealing tube 2, at the upper hole sealing tube 2 of fixed position wind it is a few circle paper self-adhesive tapes prevent Downslide comes off;The slide fastener 7-2 of sealing of hole pipe fixing device 7 is opened, the polyurethane of 25g is taken to be allowed to mix under hand rubbing 4, passes through slide fastener After mouth is poured into sealing of hole pipe fixing device 7, slide fastener 7-2 is closed;
Step 4:According to the length of drilling 1, several sections of small push rod is installed by quick coupling 14-1 makes push rod 14-1's Total length is more than the length of drilling 1, and the metal push rod 14-1 spliced using this withstands the pyramid type plug of upper hole sealing tube 2 After the upper hole sealing tube 2 that sealing of hole pipe fixing device 7 is equipped in step 3 is sent into drilling the gas chamber 1-1,8min of drilling 1 by 2-1, treat The polyurethane expanded diameter injected in step 3 reaches 130mm, can be pressurized after 2.5MPa, recalls metal push rod 14;
Step 5:Pouch 12 on one is fixed at the nozzle 9m of distance drilling 1, the hole sealing tube 9 under insertion among upper pouch 12, And fix a lower pouch 13 again at the nozzle 1m of distance drilling 1, lower hole sealing tube 9 passes through lower pouch 13 so that two pouches The cavity of a closing is formed with the inner wall of drilling 1 and lower 9 outer wall of hole sealing tube, Grouting Pipe 11, slip casting are connected in lower pouch 13 Pipe 11 is inserted into cavity;
Step 6:Expanding cement is poured into agitator, the ratio 1 with water:0.8 is stirred into paste, by portable grouting pump Pulp absorbing hole is immersed in agitator, and the grout outlet of grouting pump is connected with Grouting Pipe 11, and note is worked as in slip casting in the cavity into step 5 When slurry pump pressure reaches 1.5MPa and no longer rises, stop slip casting;
Step 8:After the grout outlet of grouting pump is pulled up from Grouting Pipe 11, valve in Grouting Pipe 11 is closed, tube sealing terminates.
Embodiment 4
As shown in figs. 1 to 6, a kind of layer-through drilling separate type whole process gas drainage hole sealing device, including:It is drilled with the brill in coal seam Hole 1,1 top of drilling is two1The formation drilling gas chamber 1-1 in coal seam, is provided in the drilling gas chamber 1-1 inner cavities Hole sealing tube 2,1 lower end of drilling are provided with lower hole sealing tube 9, offer hole on the upper sealing of hole 2, non-porous, upper envelope on lower hole sealing tube 9 The top of hole pipe 2 is provided with conical plug 2-1, and sealing of hole pipe fixing device 7, upper hole sealing tube 2 are arranged on upper 2 tube wall of hole sealing tube The top that upper hole sealing tube 2 is sent into drilling gas chamber 1-1 by conical plug 2-1, the outer tube of lower hole sealing tube 9 are headed on by push rod 14 Pouch 12 and lower pouch 13, upper pouch 12 and lower pouch are provided in the cavity that the inner tubal wall of wall and drilling gas chamber 1-1 are formed The middle cavity formed in 13 filled with expansion slurry, upper pouch 12 and lower pouch 13 is filled with expansion slurry, lower hole sealing tube 9 Grouting Pipe 11 is equipped with through lower pouch 13, valve is installed in Grouting Pipe 11, expansion slurry is injected by Grouting Pipe 11.It is described Sealing of hole pipe fixing device 7 for cotton pouch 7-1, be provided with slide fastener 7-2 on cotton pouch 7-1, pass through slide fastener 7-2 and inject poly- ammonia Ester, the cotton pouch 7-1 are set on 2 tube wall of hole sealing tube, and the diameter of cotton pouch 7-1 is according to the straight of upper hole sealing tube 2 Footpath determines that the push rod 14 is that metal push rod is made using hollow alloy pipe, and the push rod 14 is several Section φ is 10mm, and the small push rod that d is 1m is spliced, and the two ends of the small push rod are equipped with quick coupling, one end For female connector, the other end realizes rapid abutting joint for pin end, and the expansion slurry is expanding cement.
A kind of its method for sealing of layer-through drilling separate type whole process gas pumping, the method comprise the following steps:
Step 1:Seeing position drilling 1 of below the coal point 1.8m positions without cranny development so that 1 diameter of drilling reaches 94mm, Enter coal seam 1.8m through coal seam to stop boring, since gas is lighter, is just gathered in the space of 1 top 1.8m of drilling and forms drilling gas Room 1-1;
Step 2:Drilling 1 is drilled, and after acceptance(check), prepares upper hole sealing tube 2 corresponding with drilling gas chamber 1-1 coal segment length, upper envelope A diameter of 50mm of hole pipe 2 is determined in drilling gas chamber 1-1 according to the drilling gas chamber 1-1 formed and is detained hole wall without coal slime The position height at place determines the position of upper hole sealing tube 2 that sealing of hole pipe fixing device 7 is arranged, and no coal slime is detained at hole wall and is suitble to seal The polyurethane expansion and solidification of filling in hole pipe fixing device 7;
Step 3:The position that sealing of hole pipe fixing device 7 according to being determined in step 2 is arranged, by a diameter of 68mm cottons pouch 7-1 Sealing of hole pipe fixing device 7 be set on hole sealing tube 2, at the upper hole sealing tube 2 of fixed position wind it is a few circle paper self-adhesive tapes prevent Downslide comes off;The slide fastener 7-2 of sealing of hole pipe fixing device 7 is opened, the polyurethane of 28g is taken to be allowed to mix under hand rubbing 4, passes through slide fastener After mouth is poured into sealing of hole pipe fixing device 7, slide fastener 7-2 is closed;
Step 4:According to the length of drilling 1, several sections of small push rod is installed by quick coupling 14-1 makes push rod 14-1's Total length is more than the length of drilling 1, and the metal push rod 14-1 spliced using this withstands the pyramid type plug of upper hole sealing tube 2 After the upper hole sealing tube 2 that sealing of hole pipe fixing device 7 is equipped in step 3 is sent into drilling the gas chamber 1-1,12min of drilling 1 by 2-1, treat The polyurethane expanded diameter injected in step 3 reaches 130mm, can be pressurized after 2.8MPa, recalls metal push rod 14;
Step 5:Pouch 12 on one is fixed at the nozzle 9m of distance drilling 1, the hole sealing tube 9 under insertion among upper pouch 12, And fix a lower pouch 13 again at the nozzle 1m of distance drilling 1, lower hole sealing tube 9 passes through lower pouch 13 so that two pouches The cavity of a closing is formed with the inner wall of drilling 1 and lower 9 outer wall of hole sealing tube, Grouting Pipe 11, slip casting are connected in lower pouch 13 Pipe 11 is inserted into cavity;
Step 6:Expanding cement is poured into agitator, the ratio 1 with water:0.8 is stirred into paste, by portable grouting pump Pulp absorbing hole is immersed in agitator, and the grout outlet of grouting pump is connected with Grouting Pipe 11, and note is worked as in slip casting in the cavity into step 5 When slurry pump pressure reaches 1.5MPa and no longer rises, stop slip casting;
Step 8:After the grout outlet of grouting pump is pulled up from Grouting Pipe 11, valve in Grouting Pipe 11 is closed, tube sealing terminates.
Embodiment 5
As shown in figs. 1 to 6, a kind of layer-through drilling separate type whole process gas drainage hole sealing device, including:It is drilled with the brill in coal seam Hole 1,1 top of drilling is two1The formation drilling gas chamber 1-1 in coal seam, is provided in the drilling gas chamber 1-1 inner cavities Hole sealing tube 2,1 lower end of drilling are provided with lower hole sealing tube 9, offer hole on the upper sealing of hole 2, non-porous, upper envelope on lower hole sealing tube 9 The top of hole pipe 2 is provided with conical plug 2-1, and sealing of hole pipe fixing device 7, upper hole sealing tube 2 are arranged on upper 2 tube wall of hole sealing tube The top that upper hole sealing tube 2 is sent into drilling gas chamber 1-1 by conical plug 2-1, the outer tube of lower hole sealing tube 9 are headed on by push rod 14 Pouch 12 and lower pouch 13, upper pouch 12 and lower pouch are provided in the cavity that the inner tubal wall of wall and drilling gas chamber 1-1 are formed The middle cavity formed in 13 filled with expansion slurry, upper pouch 12 and lower pouch 13 is filled with expansion slurry, lower hole sealing tube 9 Grouting Pipe 11 is equipped with through lower pouch 13, valve is installed in Grouting Pipe 11, expansion slurry is injected by Grouting Pipe 11.It is described Sealing of hole pipe fixing device 7 for cotton pouch 7-1, be provided with slide fastener 7-2 on cotton pouch 7-1, pass through slide fastener 7-2 and inject poly- ammonia Ester, the cotton pouch 7-1 are set on 2 tube wall of hole sealing tube, and the diameter of cotton pouch 7-1 is according to the straight of upper hole sealing tube 2 Footpath determines that the push rod 14 is that metal push rod is made using hollow alloy pipe, and the push rod 14 is several Section φ is 10mm, and the small push rod that d is 1m is spliced, and the two ends of the small push rod are equipped with quick coupling, one end For female connector, the other end realizes rapid abutting joint for pin end, and the expansion slurry is expanding cement.
A kind of its method for sealing of layer-through drilling separate type whole process gas pumping, the method comprise the following steps:
Step 1:Seeing position drilling 1 of below the coal point 2m positions without cranny development so that 1 diameter of drilling reaches 94mm, wears It crosses coal seam and enters coal seam 2m and stop boring, since gas is lighter, is just gathered in the space of 1 top 2m of drilling and forms drilling gas chamber 1-1;
Step 2:Drilling 1 is drilled, and after acceptance(check), prepares upper hole sealing tube 2 corresponding with drilling gas chamber 1-1 coal segment length, upper envelope A diameter of 50mm of hole pipe 2 is determined in drilling gas chamber 1-1 according to the drilling gas chamber 1-1 formed and is detained hole wall without coal slime The position height at place determines the position of upper hole sealing tube 2 that sealing of hole pipe fixing device 7 is arranged, and no coal slime is detained at hole wall and is suitble to seal The polyurethane expansion and solidification of filling in hole pipe fixing device 7;
Step 3:The position that sealing of hole pipe fixing device 7 according to being determined in step 2 is arranged, by a diameter of 70mm cottons pouch 7-1 Sealing of hole pipe fixing device 7 be set on hole sealing tube 2, at the upper hole sealing tube 2 of fixed position wind it is a few circle paper self-adhesive tapes prevent Downslide comes off;The slide fastener of sealing of hole pipe fixing device 7 is opened, the polyurethane of 30g is taken to be allowed to mix under hand rubbing 5, passes through slide fastener 7-2 After mouth is poured into sealing of hole pipe fixing device 7, slide fastener 7-2 is closed;
Step 4:According to the length of drilling 1, several sections of small push rod is installed by quick coupling 14-1 makes push rod 14-1's Total length is more than the length of drilling 1, and the metal push rod 14-1 spliced using this withstands the pyramid type plug of upper hole sealing tube 2 After the upper hole sealing tube 2 that sealing of hole pipe fixing device 7 is equipped in step 3 is sent into drilling the gas chamber 1-1,15min of drilling 1 by 2-1, treat The polyurethane expanded diameter injected in step 3 reaches 150mm, can be pressurized after 3MPa, recalls metal push rod 14;
Step 5:Pouch 12 on one is fixed at the nozzle 9m of distance drilling 1, the hole sealing tube 9 under insertion among upper pouch 12, And fix a lower pouch 13 again at the nozzle 1m of distance drilling 1, lower hole sealing tube 9 passes through lower pouch 13 so that two pouches The cavity of a closing is formed with the inner wall of drilling 1 and lower 9 outer wall of hole sealing tube, Grouting Pipe 11, slip casting are connected in lower pouch 13 Pipe 11 is inserted into cavity;
Step 6:Expanding cement is poured into agitator, the ratio 1 with water:0.8 is stirred into paste, by portable grouting pump Pulp absorbing hole is immersed in agitator, and the grout outlet of grouting pump is connected with Grouting Pipe 11, and note is worked as in slip casting in the cavity into step 5 When slurry pump pressure reaches 1.5MPa and no longer rises, stop slip casting;
Step 8:After the grout outlet of grouting pump is pulled up from Grouting Pipe 11, valve in Grouting Pipe 11 is closed, tube sealing terminates.
1. traditional handicraft is compared with the consumption of present invention process sealing of hole
1 separate type sealing of hole of the present invention of table and the whole lower hole sealing tube sealing of hole situation statistical form of traditional handicraft
Remarks:1. it is 2. separate type sealing of hole is hole sealing tube sealing of hole under whole process
1 separate type sealing of hole of table saves sealing of hole length of tube than whole lower hole sealing tube sealing of hole and can reach 15~51m.
2. group extraction parameter comparison
5 groups of extraction current capacity contrasts of attached drawing show 0.07~0.23m of mixed traffic of separate type sealing of hole in figure3/ min, the lower envelope of whole process Hole 0.07~0.14m of pipe3/ min, separate type whole process extraction sealing of hole group open pumping before 7 days flows it is bigger than normal, after 7 days with sealing of hole under whole process The flow of pipe sealing of hole is basically identical.
3. group extraction parameter comparison
Attached drawing 6 is a group extraction scale comparison, and the day extraction scale maximum 38.6m of separate type whole process extraction sealing of hole group is shown in figure3, Minimum 2.6m3, the day extraction scale maximum 27.1m of the lower hole sealing tube sealing of hole group of whole process3, minimum 3.2m3, extraction purity is roughly the same, Maximum extraction purity separate type whole process extraction sealing of hole group is slightly higher.
4. Economic and Efficiency Analysis
2 sealing material Cost comparisons of table(By taking test drilling average hole depth 41m as an example)
About 680 yuan or so of the cost of separate type sealing of hole in table 2, lower about 1118 yuan of the hole sealing tube cost of whole process, compared to reduction hole sealing tube 468 yuan of Master Cost increases by 30 yuan of sealing of hole pipe fixing device Master Cost.The single hole expense of separate type sealing of hole is than whole lower sealing of hole About 438 yuan of tube coupling, 22204 Di Chou lanes length 1365m design 170 groups of borehole engineering, and by every group of drilling, minimum 5 are counted, All 37.2 ten thousand yuan of hole sealing tube expense or more can be saved using this technique.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, although with reference to foregoing reality Example is applied the present invention is described in detail, it for those skilled in the art, still can be to foregoing each implementation Technical solution recorded in example modifies or carries out equivalent substitution to which part technical characteristic;All essences in the present invention With within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention god.

Claims (7)

1. a kind of layer-through drilling separate type whole process gas drainage hole sealing device, including:It is drilled with the drilling in coal seam, the brill Hole top is two1The drilling gas chamber of the formation in coal seam, it is characterised in that:Sealing of hole is provided in the drilling gas chamber inner cavity Pipe, drilling lower end is provided with lower hole sealing tube, offers hole on the upper hole sealing tube, non-porous on lower hole sealing tube, upper hole sealing tube Top is provided with pyramid type plug, and sealing of hole pipe fixing device is arranged on the tube wall of upper hole sealing tube, and upper hole sealing tube passes through push rod Head on the top that upper hole sealing tube is sent into drilling gas chamber by pyramid type plug, the inner tubal wall of the outer tube wall and drilling gas chamber of lower hole sealing tube Pouch and lower pouch are provided in the cavity of formation, expansion slurry, upper pouch and lower capsule are filled in upper pouch and lower pouch For the middle cavity of bag formation filled with expansion slurry, lower hole sealing tube is equipped with Grouting Pipe, is equipped with valve in Grouting Pipe, passes through note Starch pipe injection expansion slurry.
2. layer-through drilling separate type whole process gas drainage hole sealing device according to claim 1, it is characterised in that:Described Sealing of hole pipe fixing device is cotton pouch, is provided with slide fastener in cotton pouch, injects polyurethane by slide fastener.
3. layer-through drilling separate type whole process gas drainage hole sealing device according to claim 2, it is characterised in that:Described Cotton pouch is set on sealing of hole tube wall, and the diameter of cotton pouch is determined according to the diameter of upper hole sealing tube.
4. layer-through drilling separate type whole process gas drainage hole sealing device according to claim 1, it is characterised in that:Described Push rod is that metal push rod is made using hollow alloy pipe.
5. layer-through drilling separate type whole process gas drainage hole sealing device according to claim 4, it is characterised in that:Described Push rod is that several sections of φ are 10mm, and the small push rod that d is 1m is spliced, and the two ends of the small push rod are equipped with soon Quick coupling, one end are female connector, and the other end realizes rapid abutting joint for pin end.
6. layer-through drilling separate type whole process gas drainage hole sealing device according to claim 1, it is characterised in that:Described Expansion slurry is expanding cement.
7. a kind of its method for sealing of layer-through drilling separate type whole process gas pumping, it is characterised in that:
The method comprises the following steps:
Step 1:Seeing position drilling of below the coal point 1~2m positions without cranny development so that the diameter of drilling reaches 94mm, wears It crosses coal seam and enters 1~2m of coal seam and stop boring, since gas is lighter, is just gathered in the space of 1~2m of drilling top and forms drilling gas Room;
Step 2:Drilling is drilled, and after acceptance(check), prepares upper hole sealing tube corresponding with drilling gas chamber coal segment length, upper hole sealing tube A diameter of 50mm, according to the drilling gas chamber formed determine drilling gas chamber in without coal slime be detained hole wall at position height come Determine the position for the upper hole sealing tube that sealing of hole pipe fixing device is arranged, no coal slime is detained at hole wall and is suitble to fill out in sealing of hole pipe fixing device The polyurethane expansion and solidification filled;
Step 3:The position that sealing of hole pipe fixing device according to being determined in step 2 is arranged, by a diameter of 65~70mm cottons pouch Sealing of hole pipe fixing device be set on hole sealing tube, at the hole sealing tube of fixed position wind it is a few circle paper self-adhesive tapes prevent lower slippage Fall;The slide fastener of sealing of hole pipe fixing device is opened, the polyurethane of 20~30g is taken to be allowed to mix under hand rubbing 3~5, passes through slide fastener mouth After pouring into sealing of hole pipe fixing device, slide fastener is closed;
Step 4:According to the length of drilling, several sections of small push rod is installed by quick coupling is more than the total length of push rod Drill the length of gas chamber, and the metal push rod spliced using this is withstood the pyramid type plug of upper hole sealing tube and will pacified in step 3 Upper hole sealing tube equipped with sealing of hole pipe fixing device is sent into the drilling gas chamber of drill tip, after 5~15min, treats to inject in step 3 Polyurethane expanded diameter reach 120~150mm, can be pressurized after 2~3MPa, recall metal push rod;
Step 5:Pouch on one is fixed at distance drilling nozzle 9m, hole sealing tube under being inserted among capsule, and drill in distance A lower pouch is fixed at nozzle 1m again so that two pouches form an envelope with the inner wall of drilling gas chamber and lower sealing of hole pipe outer wall The cavity closed connects Grouting Pipe in lower pouch;
Step 6:Expanding cement is poured into agitator, the ratio 1 with water:0.8 is stirred into paste, by portable grouting pump Pulp absorbing hole is immersed in agitator, and the grout outlet of grouting pump is connected with Grouting Pipe, and slip casting is worked as in slip casting in the cavity into step 5 When pump pressure reaches 1.5MPa and no longer rises, stop slip casting;
Step 8:After the grout outlet of grouting pump is pulled up from Grouting Pipe, valve in Grouting Pipe is closed, tube sealing terminates.
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