CN106194101A - A kind of dynamic crack, coal seam automatic filling sealing device and method - Google Patents

A kind of dynamic crack, coal seam automatic filling sealing device and method Download PDF

Info

Publication number
CN106194101A
CN106194101A CN201610535505.7A CN201610535505A CN106194101A CN 106194101 A CN106194101 A CN 106194101A CN 201610535505 A CN201610535505 A CN 201610535505A CN 106194101 A CN106194101 A CN 106194101A
Authority
CN
China
Prior art keywords
dynamic
sealing
packing
crack
hole
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.)
Pending
Application number
CN201610535505.7A
Other languages
Chinese (zh)
Inventor
魏国营
娄振
闫江伟
贾天让
冯阵东
王蔚
秦宾宾
亢方超
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 CN201610535505.7A priority Critical patent/CN106194101A/en
Publication of CN106194101A publication Critical patent/CN106194101A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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

Abstract

The invention discloses a kind of dynamic crack, coal seam automatic filling sealing device and method, including conventional hermetic system and dynamic sealing system.The hole sealing technology of " two block up a note " with pressure that described conventional hermetic system mainly uses hole sealing depth to be 5 ~ 12m carries out once sealing to extraction borehole, and described dynamic sealing system mainly uses the some dynamic seal (packing) holes being positioned at around extraction borehole to carry out repeatedly dynamic seal (packing).Connect gas concentration monitoring device on the gas pumping pipe mouth of pipe in described conventional hermetic system to be used for gas density is monitored in real time, connect slurry pressure monitor on the dynamic seal (packing) bored grouting pipe mouth of pipe in described dynamic sealing system slurry pressure in Grouting Pipe is monitored, the data that each monitor is transmitted by each microprocessor are analyzed respectively, send command adapted thereto and control the start and stop of grouting pump.The present invention can carry out automatic filling to the crack of coal seam dynamic development, has hole sealing depth short, efficient extraction time length and the high marked feature of mash gas extraction amount.

Description

A kind of dynamic crack, coal seam automatic filling sealing device and method
Technical field
The present invention relates to well work drilling gas extraction technical field, particularly relate to a kind of dynamic crack, coal seam automatic filling close Seal apparatus and method.
Background technology
Coal mine gas drainage is preventing and treating mine gas disaster and the effective measures utilizing coal bed gas resource, but China's well work Gas extraction concentration is the highest, and decay is fast.The quality of gas pumping effect is had a strong impact on by sealing quality, particularly exists In coal road, performance becomes apparent from.Domestic existing hole sealing technology the most only accomplishes one-step pore-creating or secondary reparation thus often extraction Early stage is respond well, and leakage problem in various degree occurs in the later stage, shortens the hole pumping and mining life-span.Take out to reach high concentration Adopting, major part mining area extends hole sealing depth, this adds increased sealing of hole difficulty and cost, it addition, mostly boring is by artificial behaviour Make to realize sealing.The most both add technical operation difficulty, consume again a large amount of manpower and materials.
Summary of the invention
Present invention mainly solves the problem that existing slip casting sealing technology exists, it is provided that a kind of dynamic crack, coal seam is automatic Filling sealing device and method.Cracks in coal seam can realize dynamic continuous print seal, it is achieved the efficient extraction of drilling gas.
The technical solution adopted in the present invention is: a kind of dynamic crack, coal seam automatic filling sealing device includes conventional hermetic System and dynamic sealing system, the technique of conventional hermetic system: the extraction borehole in conventional hermetic system carries out gas pumping, envelope Hole depth and sealing of hole segment length extraction borehole are according to being pre-designed, and use polyurethane and baffle plate, will by Grouting Pipe as plug The cement grout press-in extraction borehole of high intensity specifies sealing of hole section.When slurry recovering tube has serosity overfall, close slurry recovering tube, enter Row secondary grouting with pressure, until pressure reaches predetermined threshold, completes conventional hermetic.
Dynamic sealing system technique: some length of constructing around extraction borehole is dynamic less than extraction borehole hole sealing depth Sealing hole, the length of hole sealing depth and closed chamber, according to presetting, uses grouting pump by fracture filling liquid by Grouting Pipe pressure Dynamic seal (packing) reserved in hand-hole is indoor, and is diffused into crack around by dynamic seal (packing) room.It is dense that the extraction borehole mouth of pipe connects gas Degree monitor, is monitored gas extraction concentration, and gas concentration monitoring device is by signal transmssion line and the micro-process of gas density Device connects;The liquid injection pipe mouth of pipe in dynamic seal (packing) hole connects slurry pressure monitor and is monitored slurry pressure, and slurry pressure is monitored Device is connected with slurry pressure microprocessor by signal transmssion line.When gas concentration monitoring device monitors gas density less than predetermined Threshold value, signal is sent to gas density microprocessor by signal transmssion line, and gas density microprocessor sends and starts grouting pump Instruction, crack filling liquid is injected the dynamic seal (packing) room of dynamic seal (packing) boring by grouting pump;When slurry pressure Sensor monitoring arrives Slurry pressure is higher than predetermined threshold, and signal is sent to slurry pressure microprocessor by signal transmssion line, the micro-process of slurry pressure Device sends and stops grouting pump instruction, and grouting pump stops fluid injection, such iterative cycles, completes dynamic seal (packing).
Described conventional hermetic system hole sealing depth is 5 ~ 12m, and sealing of hole segment length is 3 ~ 8m.
Described plug is made up of the baffle plate of polyurethane and both sides, and baffle plate makes polyurethane expanded radially.
The aperture, dynamic seal (packing) hole of described dynamic sealing system is 30 ~ 130mm, a length of 3 ~ 11m, hole sealing depth is 2 ~ 10m, a length of 0.5 ~ 2m in dynamic seal (packing) room.
The liquid injection pipe caliber in the dynamic seal (packing) hole of described dynamic sealing system is 8 ~ 50mm.
The distance of described dynamic seal (packing) pitch-row extraction borehole is 0.3 ~ 0.8m.
For the extraction coal body of different Coal Pore Structures, different bore arrangement modes is taked in dynamic seal (packing) hole.
The invention has the beneficial effects as follows and cracks in coal seam can be carried out dynamic filling by apparatus of the present invention and method, have Drilling and sealing depth ratio tradition hole sealing technology is short, high-efficiency and continuous extraction time length and the high marked feature of mash gas extraction amount, extraction Effect and economic benefit are with the obvious advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.In figure: 1-conventional hermetic system, 2-dynamic sealing system, 3-cement grout Grouting Pipe, 4-cement grout slurry recovering tube, 5-drainage tube, 6-crack filling liquid liquid injection pipe, 7-dynamic seal (packing) room, 8-gas density is supervised Surveying device, 9-gas density is processor, 10-slurry pressure monitor, 11-slurry pressure microprocessor, 12-grouting pump, and 13-gathers Urethane, 14-baffle plate, 15-extraction borehole, 16-dynamic seal (packing) boring, 17-signal transmssion line.
Fig. 2 is that schematic diagram is arranged in the deformation coal boring of the present invention.In figure: 15-extraction borehole, 16-dynamic seal (packing) is holed.
Fig. 3 is that schematic diagram is arranged in the primary structure coal borer hole of the present invention.In figure: 15-extraction borehole, 16-dynamic seal (packing) is bored Hole.
Detailed description of the invention
Fig. 1 is the structural representation of assembly of the invention.Described conventional hermetic system 1 is used for supporting and closure extraction is bored Hole also blocks the crack that boring excavation is formed, and extraction borehole 16 carries out gas pumping, uses polyurethane 13 and baffle plate 14 as stifled Head, hole sealing depth is 5 ~ 12m, and sealing of hole segment length is 3 ~ 8m, uses grouting pump 12 by cement grout Grouting Pipe 3 by cement mortar Inject sealing of hole section, treat that cement grout slurry recovering tube 4 returns slurry and closes cement grout slurry recovering tube 4, carry out secondary band pressure grouting, until pressure The pressure of table reaches predetermined threshold, completes conventional hermetic.
Described dynamic sealing system 2 is used for filling continuously the crack that roadway excavation coal mass relief produces, at extraction borehole 15 surroundings construction some dynamic seal (packing)s boring 16, the wherein a length of 3 ~ 11m of dynamic seal (packing) boring 16, hole sealing depth is 2 ~ 10m, a length of 0.5 ~ 2m of dynamic seal (packing) room 7.Grouting pump 12 is used to be pressed by crack filling liquid liquid injection pipe 6 by fracture filling liquid In dynamic seal (packing) room 7 reserved in hand-hole.Drainage tube 5 mouth of pipe connects gas concentration monitoring device 8, and gas concentration monitoring device 8 is by letter Number transmission line 17 is connected with gas density microprocessor 9;Crack filling liquid liquid injection pipe 6 mouth of pipe of dynamic seal (packing) boring 16 connects serosity Pressure monitor 10, slurry pressure monitor 10 is connected with slurry pressure microprocessor 11 by signal transmssion line 17.Work as gas Concentration monitoring device 8 monitors gas density and is delivered to the micro-place of gas density less than predetermined threshold, signal by signal transmssion line 18 Reason device 9, gas density microprocessor 9 sends and starts grouting pump instruction, and crack filling liquid is injected dynamic seal (packing) and bored by grouting pump 12 The dynamic seal (packing) room 7 in hole 16;The slurry pressure monitored when slurry pressure sensor 10 is higher than predetermined threshold, and signal passes through signal Transmission line 18 is sent to slurry pressure microprocessor 11, and slurry pressure microprocessor 11 sends and stops grouting pump instruction, grouting pump 12 stop fluid injection, such iterative cycles, complete dynamic seal (packing).
Fig. 2 is that schematic diagram is arranged in the deformation coal boring of the present invention, for the gas pumping place that Coal Pore Structure is deformation coal, Using boring layout as depicted to carry out dynamic seal (packing), two dynamic seal (packing) holes 16 lay respectively at the upper and lower of extraction borehole 15 Side, the distance of distance extraction borehole 15 is 0.3 ~ 0.8m.
Fig. 3 is that schematic diagram is arranged, for the gas that Coal Pore Structure is primary structure coal in the primary structure coal borer hole of the present invention Extraction place, uses boring layout as depicted to carry out dynamic seal (packing), and four dynamic seal (packing) holes 16 lay respectively at extraction borehole The upper left of 15, lower-left, upper right, lower right, the distance of distance extraction borehole 15 is 0.3 ~ 0.8m.

Claims (8)

1. a coal seam dynamic crack automatic filling sealing device and method, it is characterised in that mainly include conventional hermetic system And dynamic sealing system.
A kind of dynamic crack, coal seam automatic filling sealing device and method, it is characterised in that described Conventional hermetic system in, extraction borehole carries out gas pumping, use polyurethane and baffle plate as plug, by Grouting Pipe by height The cement grout of intensity injects specifies sealing of hole section in extraction borehole, when there being serosity overfall in slurry recovering tube, close slurry recovering tube, carry out Secondary grouting with pressure, until pressure reaches predetermined threshold, completes conventional hermetic.
A kind of dynamic crack, coal seam automatic filling sealing device and method, it is characterised in that described In dynamic sealing system, some length of constructing around extraction borehole, less than the dynamic seal (packing) hole of extraction borehole hole sealing depth, uses Grouting pump is indoor by dynamic seal (packing) reserved in Grouting Pipe press-in hole by fracture filling liquid, and is diffused into by dynamic seal (packing) room Crack around.
A kind of dynamic crack, coal seam automatic filling sealing device and method, it is characterised in that described In dynamic sealing system, the extraction borehole mouth of pipe connects gas concentration monitoring device, is monitored gas extraction concentration, and gas density is supervised Survey device to be connected with gas density microprocessor by signal transmssion line;The liquid injection pipe mouth of pipe in dynamic seal (packing) hole connects slurry pressure monitoring Device, is monitored slurry pressure, and slurry pressure monitor is connected with slurry pressure microprocessor by signal transmssion line, when watt This concentration monitoring device monitors gas density and is less than predetermined threshold, and signal is sent to the micro-process of gas density by signal transmssion line Device, gas density microprocessor sends and starts grouting pump instruction, and crack filling liquid is injected the close of dynamic seal (packing) boring by grouting pump Envelope room;The slurry pressure arrived when slurry pressure Sensor monitoring is sent to slurry higher than predetermined threshold, signal by signal transmssion line Hydraulic coupling microprocessor, slurry pressure microprocessor sends and stops grouting pump instruction, and grouting pump stops fluid injection, so circulates, complete Become dynamic seal (packing).
A kind of dynamic crack, coal seam automatic filling sealing device and method, it is characterised in that dynamically The aperture in the dynamic seal (packing) hole of sealing system is 30 ~ 130mm, a length of 3 ~ 11m, and hole sealing depth is 2 ~ 10m, and dynamic seal (packing) room is long Degree is 0.5 ~ 2m.
A kind of dynamic crack, coal seam automatic filling sealing device and method, it is characterised in that dynamically The distance sealing pitch-row extraction borehole is 0.3 ~ 0.8m.
A kind of dynamic crack, coal seam automatic filling sealing device and method, it is characterised in that plug The both sides of middle polyurethane are provided with baffle plate, make polyurethane expanded radially.
A kind of dynamic crack, coal seam automatic filling sealing device and method, it is characterised in that for The extraction coal body of different Coal Pore Structures, different bore arrangement modes is taked in dynamic seal (packing) hole.
CN201610535505.7A 2016-07-08 2016-07-08 A kind of dynamic crack, coal seam automatic filling sealing device and method Pending CN106194101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610535505.7A CN106194101A (en) 2016-07-08 2016-07-08 A kind of dynamic crack, coal seam automatic filling sealing device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610535505.7A CN106194101A (en) 2016-07-08 2016-07-08 A kind of dynamic crack, coal seam automatic filling sealing device and method

Publications (1)

Publication Number Publication Date
CN106194101A true CN106194101A (en) 2016-12-07

Family

ID=57473311

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610535505.7A Pending CN106194101A (en) 2016-07-08 2016-07-08 A kind of dynamic crack, coal seam automatic filling sealing device and method

Country Status (1)

Country Link
CN (1) CN106194101A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109538159A (en) * 2018-11-14 2019-03-29 淮南矿业(集团)有限责任公司 A kind of remote grouting method and grouting system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399866A (en) * 1981-04-10 1983-08-23 Atlantic Richfield Company Method for controlling the flow of subterranean water into a selected zone in a permeable subterranean carbonaceous deposit
CN201206471Y (en) * 2008-05-23 2009-03-11 淮南矿业(集团)有限责任公司 Sealing device for pumping borehole
CN102606208A (en) * 2011-01-20 2012-07-25 淮南矿业(集团)有限责任公司 Automatic drainage process of downward through beds hole
CN202882842U (en) * 2012-11-02 2013-04-17 淮南矿业(集团)有限责任公司 Hole sealing device
CN105298437A (en) * 2015-04-14 2016-02-03 河南理工大学 Method of automatically sealing gas drainage borehole

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399866A (en) * 1981-04-10 1983-08-23 Atlantic Richfield Company Method for controlling the flow of subterranean water into a selected zone in a permeable subterranean carbonaceous deposit
CN201206471Y (en) * 2008-05-23 2009-03-11 淮南矿业(集团)有限责任公司 Sealing device for pumping borehole
CN102606208A (en) * 2011-01-20 2012-07-25 淮南矿业(集团)有限责任公司 Automatic drainage process of downward through beds hole
CN202882842U (en) * 2012-11-02 2013-04-17 淮南矿业(集团)有限责任公司 Hole sealing device
CN105298437A (en) * 2015-04-14 2016-02-03 河南理工大学 Method of automatically sealing gas drainage borehole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109538159A (en) * 2018-11-14 2019-03-29 淮南矿业(集团)有限责任公司 A kind of remote grouting method and grouting system

Similar Documents

Publication Publication Date Title
CN103277120B (en) A kind of non-fully deeply freeze vertical thaw after water burst prevention and controls
CN103742129B (en) The method of weak seam measuring gas pressure of coal bed by drilling hole
CN105673067A (en) Hydraulic fracture and microwave radiation combined coal bed gas enhanced extraction device and method
US10774591B2 (en) Drill-power-based directional hydraulic fracturing system for downhole quick slotting and method thereof
CN105804786B (en) A kind of weak seam bottom plate layer-through drilling pressure rushes anti-reflection method
CN106246188B (en) The system and method that the prevention coal mine shaft lining shaft deformation of stratum settlement compatibility of deformation is destroyed
CN104389559A (en) Method and device for preventing and controlling gas transfinite in thick-coal-seam mining process
CN103835651A (en) Single-hole directional drilling local grouting raise boring technology
CN205502044U (en) Be applied to precipitation structure in grittiness water -bearing stratum under building
CN111005760A (en) Drainage type drainage system for karst tunnel
CN104763368A (en) Orifice seal device for large-diameter downhole hammer and reverse circulation construction technology for orifice seal device
CN106194101A (en) A kind of dynamic crack, coal seam automatic filling sealing device and method
CN103939075B (en) A kind of fracturing process improving coal mine gas drainage effect and device
CN205977170U (en) Automatic sealing device that fills in coal seam developments crack
CN104481452B (en) A kind of frequency conversion pulsating inlet well method for sealing
CN105649625B (en) A kind of high-low pressure subregion fracturing anatonosis formula coal-bed flooding method
CN110566155B (en) Circulating grouting and hole sealing method for deformation-resistant gas extraction drill hole in mining area
CN109139057B (en) Coal mining roadway floor water absorption bottom heave treatment method
CN210370586U (en) Water outlet elevation drilling and grouting water stopping device
CN105927268A (en) Gas explosion coal seam permeability increasing extraction method in borehole in later period of induction extraction
CN206681739U (en) Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions
CN106640090B (en) Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions
AU2016231638B2 (en) A type of high pressure resistant borehole sealing device and method
CN205477511U (en) Prevent releasing hydraulic fracturing hole sealing device
CN107035339B (en) Method for plugging limestone drill hole by using high-pressure chemical grouting technology

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20161207

WD01 Invention patent application deemed withdrawn after publication