CN101666239A - Hole sealer for dual purposes of gas drainage and coal seam water injection and using method thereof - Google Patents
Hole sealer for dual purposes of gas drainage and coal seam water injection and using method thereof Download PDFInfo
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- CN101666239A CN101666239A CN200910180565A CN200910180565A CN101666239A CN 101666239 A CN101666239 A CN 101666239A CN 200910180565 A CN200910180565 A CN 200910180565A CN 200910180565 A CN200910180565 A CN 200910180565A CN 101666239 A CN101666239 A CN 101666239A
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Abstract
The invention belongs to the field of coal mining and relates to a hole sealer for dual purposes of gas drainage and coal seam water injection and a using method thereof. The hole sealer consists of aslidable hydraulic closed end (1), a fixed hydraulic closed end (2), a tamping liquid injection pipe (3), an expansion rubber pipe (4) and an inner pipe (5); one end of the inner pipe is closed to bethe fixed hydraulic closed end (2), the other end is the slidable hydraulic closed end (1), the two ends are closed for forming confined space between the expansion rubber pipe (4) and the inner pipe, high pressure liquid is injected in the confined space by the tamping liquid injection pipe (3), thereby expanding the expansion rubber pipe and leading the movable closed end to slide inwards; andthe tamping liquid injection pipe and the expansion device of the hole sealer are mutually independent, and the closing of the tamping liquid injection pipe can realize the long-term hole sealing. Thehole sealer does not need to be removed during the gas drainage process and the coal seam water injection process, and the gas drainage work and the coal seam water injection work are completed successively in a same hole, thereby realizing the dual purposes of the hole and having the advantages of convenient operation, good hole sealing effect, a plurality of times of reuse and extensive popularization and application prospects.
Description
Technical field
The invention belongs to field of coal mining, relate to and a kind ofly realize that same hole successively carries out the hole sealing technology of gas drainage under suction and coal-bed flooding, be applied to coal bed gas drainage and coal-bed flooding sealing of hole, can realize that a hole is dual-purpose, reduce the workload of boring, improve the utilization rate of boring.
Background technology
High speed development along with coal industry and Coal Production mechanization, gas and dust problem in the Coal Production are more and more outstanding, the incident of gas and coal-dust explosion happens occasionally, the serious life security that is threatening coal miner, and the sick incidence of disease of coal worker's pneumoconiosis is still higher, and the health of coal miner is had a strong impact on.Coal and gas are outstanding to be a kind of serious natural calamity under the coal mine, is the important topic that the safety in production in colliery need solve.
Coal-bed flooding is to solve one of effecting a permanent cure property measure of dust hazard problem, and carrying out gas drainage under suction in advance is to solve coal and the outstanding effective ways of gas.Coal-bed flooding and gas drainage under suction all need be carried out sealing of hole, and method for sealing in the past can only one-sidely carry out coal-bed flooding or gas drainage under suction, and therefore study the hole packer of using in an a kind of hole has good economic benefits and popularizing application prospect more.
Coal-bed flooding is to solve one of effecting a permanent cure property measure of dust hazard problem, and carrying out gas drainage under suction in advance is to solve coal and the outstanding effective ways of gas.Coal-bed flooding and gas drainage under suction all need be carried out sealing of hole, and method for sealing in the past can only unilaterally carry out coal-bed flooding or gas drainage under suction, and its inherent defect is all arranged.Cement mortar sealing of hole advantage is that cost is low, and sealing of hole is effective, but complex operation, workload is big, and hole sealing depth is not dark; Polyurethane sealing of hole advantage is simple to operate, and shortcoming is that sealing of hole intensity is little, sealing of hole effect instability, and hole sealing depth is not dark, is easily damaged by pressure when pressing and causes gas leakage; The hole packer sealing of hole is simple to operate, can be multiplexing, and sealing of hole is effective, and sealing of hole intensity is big, and hole sealing depth is dark, and shortcoming is that cost is higher.Method for sealing in the past can not be taken out and annotate dual-purposely, and boring can not be reused, and therefore needing to bore new hole gas drainage under suction after carries out coal-bed flooding, has so both increased the workload of holing, and the while, residual hole also can have influence on the effect of water filling.Utilization is taken out and annotated the efficient sealing of hole that dual-purpose hole packer can satisfy gas drainage under suction, and is easy and simple to handle, can take out afterwards earlier in same hole and annotate, and saved the workload of boring, and hole packer is repeatedly multiplexing, and higher popularizing application prospect is widely arranged.
Summary of the invention
The objective of the invention is to produce a kind of can gas drainage under suction and the dual-purpose hole packer of coal-bed flooding, can be implemented in same boring by hole packer dual-purpose and successively carry out gas drainage under suction and coal-bed flooding, realize the technology that a hole is dual-purpose, improve the utilization rate of boring, the hole packer sealing of hole is easy and simple to handle, sealing of hole is effective, can be widely used in gas before the coal mining and take out in advance and work such as coal-bed flooding.
The hole packer that a kind of gas drainage under suction and coal-bed flooding are dual-purpose is by slidably hydraulic lock end 1, fixed hydraulic blind end 2, suppress liquid injection pipe 3, expansion sebific duct 4, interior pipe 5 and form.Interior Guan Yiduan sealing is fixed hydraulic blind end 2, the other end is hydraulic lock end 1 slidably, closed at both ends makes between expansion sebific duct 4 and the interior pipe and forms confined space, inject highly pressurised liquid by suppressing liquid injection pipe 2 to this confined space, the expansion sebific duct is expanded, and movable blind end slides inwards, and hole packer suppresses liquid injection pipe and expansion gear is separate, liquid injection pipe is suppressed in sealing, can realize long sealing of hole.
Hole packer requires to do interior pipe with the heavy wall anti-corrosive steel tube.Hole packer expansion sebific duct is selected for use the ripe rubber of one deck to add two-layer copper wire to add outer rubber type.Hole packer its slidably blind end adopt hydraulic lock, can slide relatively between sealing and the water injection pipe.Hole packer fixed sealing closed end adopts hydraulic lock, and weldering is dead fixing between sealing and the water injection pipe.Hole packer is suppressed liquid injection pipe welding snap joint or welding hose.Pipe need be done rounding polishing and preservative treatment in the hole packer.
Utilization is taken out the dual-purpose hole packer of notes and is realized the dual-purpose technology in a hole, at first be to use to take out and annotate dual-purpose hole packer and carry out the gas sealing of hole, in the advance of the face to apart from boring 15～20m place, remove the gas drainage under suction device, in original boring, use water injection equipment to connect hole packer and carry out coal-bed flooding, realize that a hole is dual-purpose, after water filling finished, hole packer was recyclable multiplexing.Boring has circularity and planeness preferably.Hole packer hydraulic pressure requires more than 2MPa, can finish the hole packer sealing of hole and expand.
Advantage of the present invention is that sealing of hole is easy and simple to handle, during operation, hole packer is put into the boring assigned address, utilizes high-pressure water pipe to inject highly pressurised liquid hole packer is expanded to suppressing liquid injection pipe, treat that hole packer is sealed the hole after, sealing is suppressed liquid injection pipe and can be finished sealing of hole.Because hole packer can be applied to gas drainage under suction sealing of hole and coal-bed flooding sealing of hole, so after same boring gas drainage under suction is finished, can carry out coal-bed flooding, does not need redrilling, has saved the boring workload, has improved the effect of water filling simultaneously.Hole packer can be repeatedly multiplexing, has very high economic worth and popularizing application prospect.
Description of drawings
Fig. 1: the structure chart of pressing the rubber hole packer that expands certainly for middle water flowing.Wherein: 1-is hydraulic lock slidably; The sealing of 2-fixed hydraulic; 3-suppresses liquid injection pipe; 4-expansion sebific duct; Pipe in the 5-.
Fig. 2: for middle water flowing is pressed from the rubber hole packer profile that expands.Wherein: the 6-confined space;
Fig. 3: aboveground sealing of hole time simulation setting drawing.Wherein: the 7-pressurized tube; The 8-hole packer; The 9-pressure sensor; 10-pressure sensing sheet.
Fig. 4: sealing of hole pressure decay pattern.
Fig. 5: gas drainage under suction arrangement diagram.Wherein: the 11-flowtube; 12-gas drainage under suction main pipe rail; 13-seals the hole packer of boring; The 14-releasing pipe.
The specific embodiment
As shown in Figure 1: hole packer by slidably hydraulic lock end 1, fixed hydraulic blind end 2, suppress liquid injection pipe 3, expansion sebific duct 4 and interior pipe 5 and form.Slidably hydraulic lock end and fixed hydraulic blind end all adopt the cushion rubber hydraulic lock, fixed hydraulic blind end and the weldering of interior pipe are dead, slidably the hydraulic lock end can slide with interior pipe friction, Fig. 2 is the profile of this hole packer, form confined space 6 between expansion sebific duct 4 and the interior pipe 5, inject highly pressurised liquid by suppressing liquid injection pipe to this confined space, the expansion sebific duct is expanded, and slidably sealing is shunk inwards, reaches the sealing of hole effect, the expansion of sebific duct and the gas drainage under suction of interior pipe or water filling are separated from each other, as long as liquid injection pipe is suppressed in sealing, can make hole packer keep the state that expands, this hole packer good airproof performance, liquid in the confined space is non-leakage, thereby realizes long-term sealing of hole.
The expansion sebific duct of hole packer is selected for use the ripe rubber of one deck to add two-layer copper wire to add outer rubber type, and described copper wire is the copper wire line that stranded copper wire is entwined, and twines between coaxial line about 20 ° to 45 ° of angle, and winding angle is identical between about two-layer steel wire coaxial line.
The slidably blind end of hole packer adopts hydraulic lock, can slide relatively between sealing and the water injection pipe.Require internal pipe to carry out the rounding polishing, prevent that the excessive influence of frictional force is multiplexing, avoid the interior pipe of liquid corrosion of confined space simultaneously.
If the sealing of hole distance is more shallow, it is suppressed liquid injection pipe welding snap joint and connects high-pressure water pipe, if the sealing of hole distance is darker, eats dishes without rice or wine to connect high-pressure water pipe but welding hose extends to.
The performance from the rubber hole packer that expands is pressed in water flowing in illustrating below by experiment:
The test of sealing of hole time:
Experimental technique: as shown in Figure 3, hole packer 8 swollen placing in the pressurized tube 7, pressure sensing sheet 10 is sticked in the expansion sebific duct of the hole packer outside, and the pressure sensing sheet can feed back the extruding force between hole packer and the pressurized tube, and feedback data is shown in pressure sensor 9.Device is observed the attenuation of hole packer to all lateral pressures thus, and be three months observing time, pressure attenuation curve such as Fig. 4, and attenuation is 0.1MPa.
The sealed borehole length test:
Test method: hole packer is expanded in air, measure the amount of contraction of the hole packer under each and every one swell diameter, thereby draw the sealed borehole length under each sealing of hole aperture.The expansion data such as the table 1 of the hole packer of main model:
Table 1
The compressive resistance test:
Experimental technique: hole packer is placed air, determined the bulbs of pressure, be expanded to the largest hole diameter under this pressure then, measure this diameter, increase pressure then, repeat above process, till the hole packer explosion.Table 2 is the result of the test of compressive resistance test:
Table 2
Utilization is taken out and annotated the down-hole enforcement that dual-purpose hole packer is realized the dual-purpose technology in a hole: use hole packer that firedamp taking-out discharging drilling is carried out sealing of hole, join the hole then, 5 to 20 borings that do not wait are linked as one group, carry out gas drainage under suction; Treat that the advance of the face to apart from the about 20m of boring the time, removes gas drainage under suction equipment, directly carry out coal-bed flooding work in original boring, saved again in the trouble of brill water injection hole, realize that a hole is dual-purpose, after coal-bed flooding work was finished, hole packer was recyclable multiplexing.
This technology underground trials place is zhang this coal seam of eight wells, 7203 work planes, north, state sun one ore deposit, selects 20 of borings continuously, is divided into two groups, and 10 borings are linked as one group, and 10 meters of pitch-rows, hole depth are 120m, and the gas drainage under suction negative pressure is 4000～8000Pa.About three months of extraction time, stop when treating the advance of the face to about 20m.Gas drainage under suction connection hole such as Fig. 5, the hole packer 13 of sealing boring is linked gas drainage under suction main pipe rail 10 by releasing pipe 14, flowtube 11 is used to measure the gas parameter, the survey in two days of gas drainage under suction data, and used measuring apparatus is a CJZ70 gas drainage under suction comprehensive parameters analyzer.
After gas drainage under suction finished, hole packer did not take out, and directly carried out coal-bed flooding work at original gas extraction hole, and coal-bed flooding is long-armed water filling, adopts the dynamic pressure water filling, and water injection pressure is 12MPa.Flood effectiveness is as shown in table 3:
Table 3
| Apart from hole spacing | Average moisture content (%) before the water filling | Average moisture content after the water filling (%) | Moisture content increment (%) | The rate of surging (%) |
| Apart from 1#20m | ??1.88 | ??3.39 | ??1.51 | ??80.3 |
| Apart from 1#10m | ??1.90 | ??3.44 | ??1.54 | ??81.1 |
| Apart from 2#8m | ??1.92 | ??3.48 | ??1.56 | ??81.2 |
| Apart from 3#6m | ??1.94 | ??3.53 | ??1.59 | ??81.9 |
| Apart from 4#6m | ??1.95 | ??3.57 | ??1.62 | ??83.1 |
| Apart from 5#6m | ??1.96 | ??3.59 | ??1.63 | ??83.2 |
As can be seen from Table 3, average moisture content is 1.925% in the preceding coal seam of water filling, then brings up to after the water filling about 3.5%, and the moisture content average increment is 1.575%, and on average the rate of surging reaches 81.82%.The moisture content in coal seam significantly improves, and visible sealing of hole is respond well.
Claims (9)
1, the dual-purpose hole packer of a kind of gas drainage under suction and coal-bed flooding is characterized in that by slidably hydraulic lock end (1), fixed hydraulic blind end (2), suppresses liquid injection pipe (3), expansion sebific duct (4), interior pipe (5) and form; Interior Guan Yiduan sealing is fixed hydraulic blind end (2), the other end is hydraulic lock end (1) slidably, closed at both ends makes between expansion sebific duct (4) and the interior pipe and forms confined space, inject highly pressurised liquid by suppressing liquid injection pipe (2) to this confined space, the expansion sebific duct is expanded, and movable blind end slides inwards; Hole packer suppresses liquid injection pipe and expansion gear is separate, and liquid injection pipe is suppressed in sealing, can realize long sealing of hole.
2, a kind of according to claim 1 gas drainage under suction and the dual-purpose hole packer of coal-bed flooding, the sebific duct that it is characterized in that expanding are selected for use the ripe rubber of one deck to add two-layer copper wire to add outer rubber type.
3, a kind of according to claim 1 gas drainage under suction and the dual-purpose hole packer of coal-bed flooding is characterized in that slidably blind end adopts hydraulic lock, slidably can slide relatively between blind end and the water injection pipe.
4, a kind of according to claim 1 gas drainage under suction and the dual-purpose hole packer of coal-bed flooding is characterized in that the fixed sealing closed end adopts hydraulic lock, and weldering is dead fixing between fixing sealing and the water injection pipe.
5, a kind of according to claim 1 gas drainage under suction and the dual-purpose hole packer of coal-bed flooding is characterized in that suppressing liquid injection pipe and are welded with snap joint or welding hose.
6, a kind of according to claim 1 gas drainage under suction and the dual-purpose hole packer of coal-bed flooding, pipe need be done rounding polishing and preservative treatment in it is characterized in that.
7, a kind of according to claim 1 gas drainage under suction and the dual-purpose hole packer of coal-bed flooding, it is characterized in that adopting on the using method the dual-purpose technology in a hole, at first be to use to take out and annotate dual-purpose hole packer and carry out the gas sealing of hole, in the advance of the face to apart from boring 15～20m place, remove the gas drainage under suction device, in original boring, use water injection equipment to connect hole packer and carry out coal-bed flooding, realize that a hole is dual-purpose; After water filling finished, hole packer can reclaim multiplexing.
8, as the using method of the dual-purpose hole packer of a kind of gas drainage under suction as described in the claim 7 and coal-bed flooding, it is characterized in that requirement boring has circularity and planeness preferably.
9, as the using method of the dual-purpose hole packer of a kind of gas drainage under suction as described in the claim 7 and coal-bed flooding, it is characterized in that the requirement of hole packer hydraulic pressure more than 2MPa, can finish the hole packer sealing of hole and expand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910180565A CN101666239A (en) | 2009-10-20 | 2009-10-20 | Hole sealer for dual purposes of gas drainage and coal seam water injection and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910180565A CN101666239A (en) | 2009-10-20 | 2009-10-20 | Hole sealer for dual purposes of gas drainage and coal seam water injection and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101666239A true CN101666239A (en) | 2010-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910180565A Pending CN101666239A (en) | 2009-10-20 | 2009-10-20 | Hole sealer for dual purposes of gas drainage and coal seam water injection and using method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230395A (en) * | 2011-06-18 | 2011-11-02 | 淮南宏昌科技有限责任公司 | Multifunctional hole packer capable of plugging and injecting |
| CN102383826A (en) * | 2011-06-30 | 2012-03-21 | 河南理工大学 | Hole sealer and hole sealing process realized by using same |
| CN102562126A (en) * | 2011-12-31 | 2012-07-11 | 枣庄矿业(集团)有限责任公司田陈煤矿 | Hole sealing device for coal seam water infusion long hole |
| CN102966368A (en) * | 2012-11-24 | 2013-03-13 | 周春雷 | Hole packer for coal seam crushing |
| CN103362472A (en) * | 2013-08-06 | 2013-10-23 | 河南理工大学 | Externally injecting type gas drainage and coal seam water injection hole packer |
| CN103527242A (en) * | 2013-10-30 | 2014-01-22 | 华北科技学院 | United under pressure gas drainage hole sealing method and applied double-layer expansion rubber pipes thereof |
| CN105672921A (en) * | 2016-01-22 | 2016-06-15 | 华北科技学院 | Coal seam drill hole packer simulation pushing device and pushing method |
| CN105696938A (en) * | 2014-11-24 | 2016-06-22 | 登封市君鑫煤业有限责任公司 | Method for taking out hole sealing device |
| CN107664019A (en) * | 2016-07-27 | 2018-02-06 | 徐州博安科技发展有限责任公司 | One-way expansion sealing of hole extraction pressure tester |
| CN109403909A (en) * | 2018-11-29 | 2019-03-01 | 中国矿业大学 | A kind of longhole infusion hole packer |
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2009
- 2009-10-20 CN CN200910180565A patent/CN101666239A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230395A (en) * | 2011-06-18 | 2011-11-02 | 淮南宏昌科技有限责任公司 | Multifunctional hole packer capable of plugging and injecting |
| CN102230395B (en) * | 2011-06-18 | 2013-11-20 | 淮南宏昌科技有限责任公司 | Multifunctional hole packer capable of plugging and injecting |
| CN102383826B (en) * | 2011-06-30 | 2013-11-20 | 河南理工大学 | Hole sealer and hole sealing process realized by using same |
| CN102383826A (en) * | 2011-06-30 | 2012-03-21 | 河南理工大学 | Hole sealer and hole sealing process realized by using same |
| CN102562126A (en) * | 2011-12-31 | 2012-07-11 | 枣庄矿业(集团)有限责任公司田陈煤矿 | Hole sealing device for coal seam water infusion long hole |
| CN102966368A (en) * | 2012-11-24 | 2013-03-13 | 周春雷 | Hole packer for coal seam crushing |
| CN103362472A (en) * | 2013-08-06 | 2013-10-23 | 河南理工大学 | Externally injecting type gas drainage and coal seam water injection hole packer |
| CN103527242A (en) * | 2013-10-30 | 2014-01-22 | 华北科技学院 | United under pressure gas drainage hole sealing method and applied double-layer expansion rubber pipes thereof |
| CN103527242B (en) * | 2013-10-30 | 2016-08-03 | 华北科技学院 | A kind of double-deck Dilated rubber hose combining gas drainage plugging method with pressure and application thereof |
| CN105696938A (en) * | 2014-11-24 | 2016-06-22 | 登封市君鑫煤业有限责任公司 | Method for taking out hole sealing device |
| CN105696938B (en) * | 2014-11-24 | 2017-08-04 | 登封市君鑫煤业有限责任公司 | A kind of removing method of hole packer |
| CN105672921A (en) * | 2016-01-22 | 2016-06-15 | 华北科技学院 | Coal seam drill hole packer simulation pushing device and pushing method |
| CN105672921B (en) * | 2016-01-22 | 2018-01-26 | 华北科技学院 | Coal bed drilling hole packer simulates propulsion plant and propulsion method |
| CN107664019A (en) * | 2016-07-27 | 2018-02-06 | 徐州博安科技发展有限责任公司 | One-way expansion sealing of hole extraction pressure tester |
| CN109403909A (en) * | 2018-11-29 | 2019-03-01 | 中国矿业大学 | A kind of longhole infusion hole packer |
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Application publication date: 20100310 |