CN102287218A - Gas drainage hole-sealing device - Google Patents
Gas drainage hole-sealing device Download PDFInfo
- Publication number
- CN102287218A CN102287218A CN2011102334215A CN201110233421A CN102287218A CN 102287218 A CN102287218 A CN 102287218A CN 2011102334215 A CN2011102334215 A CN 2011102334215A CN 201110233421 A CN201110233421 A CN 201110233421A CN 102287218 A CN102287218 A CN 102287218A
- Authority
- CN
- China
- Prior art keywords
- sealing
- hole
- pipe
- grouting
- gas drainage
- 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
Links
Images
Landscapes
- Pipe Accessories (AREA)
Abstract
The invention discloses a gas drainage hole-sealing device which comprises a drainage pipe (3), a grouting pipe (4) and a grouting pump (7), wherein a feed pipe (8) is connected to the grouting pump (7), the grouting pump (7) is connected with a discharge pipe (6), the discharge pipe (6) is connected with the grouting pipe (4) through a gun head (5), hole-sealing bags (1) are arranged at the two ends of the drainage pipe (3) and a hole-sealing material (2) is tightly wrapped on the outer wall of the drainage pipe (3). By adopting the gas drainage hole-sealing device, a series of problems caused by insufficient length of a current gas drainage hole-sealing section and poor sealing property of hole-sealing during the current gas drainage hole-sealing can be effectively solved.
Description
Technical field
The present invention relates to the gas discharge in mine field.
Background technology
The mine gas drainage rate of China is generally not high, makes the safe looks of mine can not get due improvement, and the production capacity of mine is not in full use, and has influenced the returns of investment of mine.Influencing the low one of the main reasons of extraction rate is exactly that drilling and sealing is of poor quality.At the borehole sealing technical elements, the current hole sealing technology that generally adopts mainly contains yellow mud (cement group) sealing of hole, mechanical cementing mortar sealing of hole, foaming polymeric materials sealing of hole, hole packer sealing of hole, " polyurethane+cement paste " sealing of hole etc.
The problem that mainly exists in the hole sealing technology field at present, concentrated reflection exists: the colliery all is to adopt cement mortar or chemical blowing polymeric material sealing of hole boring being carried out on the hole sealing technology all the time, about sealing of hole segment length 6 to 8 m.Because the degree of depth of sealing of hole is not enough and the shortcoming of sealing of hole equipment and sealing material itself, under the effect of extraction negative pressure, the distinguished and admirable existence of disadvantageous short circuit is arranged in the extraction system, reduced the extraction concentration of gas, consume negative pressure, increased the weight of the burden of extraction pipeline, thereby reduced the extraction effect; Chemical blowing polymeric material method of pore sealing can overcome shortcomings such as the cement mortar sealing of hole is not tight, can diffuse and penetrate in boring reticulated cell (splitting) crack on every side, extraction concentration and effect have been improved greatly, but the reaction of chemical blowing polymeric material is very fast, be generally about 20 minutes, be unfavorable for execute-in-place, because the too fast releasing pipe that do not wait of reaction is put into the boring requirement degree of depth, material is just in foaming, if at this moment by force under the situation of boring the inside plug releasing pipe, caused the fragmentation of foams, can cause sealing of hole unreal like this, outside air is easily in the access of crack, these holes (splitting) under the effect of extraction negative pressure, thereby causes gas drainage under suction concentration to descend, and shortened effective extraction life-span of boring.
Summary of the invention
The technical problem to be solved in the present invention: provide a kind of gas drainage under suction hole sealing device to solve:
1) problem that causes inadequately of current gas drainage under suction sealing of hole segment length;
2) problem that the sealing of hole poor sealing causes during current gas drainage under suction sealing of hole.
Technical solution of the present invention:
A kind of gas drainage under suction hole sealing device comprises releasing pipe, Grouting Pipe and grouting pump, and feed pipe is connected to grouting pump, and grouting pump is connected with discharge nozzle, and discharge nozzle is connected with Grouting Pipe by the rifle head, and there is the sealing of hole bag at the releasing pipe two ends, and sealing material wraps tightly around releasing pipe.
Sealing material is by adding the microdilatancy particle in the macromolecule polymeric material, mixing according to the 1:1 ratio.
The sealing of hole bag is positioned at 1.5 meters to 2 meters of releasing pipe front end and place, aperture.
Sealing material is to inject macromolecule polymeric material in the enclosure space that forms by grouting pump in boring to form, and the press pump number of times is pressed following formula calculating:
In the formula: N-press pump number of times (back and forth being once circulation);
D-bore diameter;
D-releasing pipe diameter;
L-sealed borehole length;
α-coefficient of foaming;
The pressure that the comes and goes v-grouting pump load that once circulates.
Beneficial effect of the present invention:
Utilize the present invention, the sealing of hole bag is twined extraction pipe front end to be located for about 1.5 meters, tighten with band, fully putting into the extraction hole after the kneading sees, and then block the aperture with a sealing of hole bag, to add in the macromolecule polymeric material in the sealing material injection hole enclosure space of microdilatancy particle according to the mixing of 1:1 ratio by grouting pump and Grouting Pipe, adopt " two ends are stifled; the middle notes " to form the space of a relative closure, the sealing of hole section produces " band is pressed effect ", and material expands in restricted clearance, and compactness strengthens, the part material enters in the boring crack on every side, improves the sealing of boring greatly.
Owing to take " two ends are stifled " at boring releasing pipe two ends, can effectively control the position of the length of sealing of hole, " the middle notes " utilizes grouting pump to inject the length that sealing material can effectively be grasped the sealing of hole section, reach the increase hole sealing depth, strengthen sealed borehole length, solved the problem that gas drainage under suction sealing of hole segment length causes inadequately, effectively avoid the tunnel relaxation zone, and improve sealing material and hole wall adhesion stress, guarantee the sealing of sealing of hole, and then improve extraction concentration; Sealing material and grouting device according to the present invention's employing, advantage such as make that the sealing material of injection has that dilatancy is big, plasticity and resistance to compression, shear resistance are strong, adhesion stress and tightness are good, this material foaming is along with time lengthening foams gradually, there is time enough to be beneficial to execute-in-place, avoided the fragmentation of foams, it is unreal to have solved under the conventional equipment sealing of hole, outside air is easily in the access of crack, these holes (splitting) under the effect of extraction negative pressure, thereby cause gas drainage under suction concentration to descend, shortened the problems such as effective extraction life-span of boring; Increased the single hole amount of drawing out methane; The boring utilization rate is improved, and effectively reduces punching, sealing of hole cost; Effectively reduced the face gas frequency that transfinites, producing coal is more in the short time, and indirect economic effect is obvious; Make a large amount of gas of ocurrence of coal seam be drawn out of, mining work is able to safety, efficiently carries out.
Description of drawings:
Fig. 1 is a principle of the invention schematic diagram;
Fig. 2 is a gas extraction concentration comparison diagram behind conventional gas drainage under suction hole sealing device and the gas drainage under suction hole sealing device sealing of hole of the present invention.
The specific embodiment:
As Fig. 1, gas drainage under suction hole sealing device of the present invention, comprise releasing pipe 3, Grouting Pipe 4 and grouting pump 7, feed pipe 8 is connected to grouting pump 7, grouting pump 7 is connected with discharge nozzle 6, discharge nozzle 6 is connected with Grouting Pipe 4 by rifle head 5, and there is sealing of hole bag 1 at releasing pipe 3 two ends, and sealing material 2 wraps tightly around releasing pipe 3.
Sealing material 2 is by adding the microdilatancy particle in the macromolecule polymeric material, mixing according to the 1:1 ratio.
Sealing of hole bag 1 is positioned at 1.5 meters to 2 meters of releasing pipe 3 front ends and place, aperture.
Sealing material 2 is to inject macromolecule polymeric material in the enclosure space that forms by grouting pump 7 in boring to form, and the press pump number of times is pressed following formula calculating:
In the formula: N-press pump number of times (back and forth being once circulation);
D-bore diameter;
D-releasing pipe diameter;
L-sealed borehole length;
α-coefficient of foaming;
The pressure that the comes and goes v-grouting pump load that once circulates;
The gas drainage under suction hole sealing device can be realized sealing of hole according to following step:
First: at about 1.5 to the 2m places of releasing pipe 3 front ends a sealing of hole bag 1 is installed, and is tightened, put into the extraction hole after fully integrating 20 to 40 seconds with hand then with iron wire;
Second: installing valve at releasing pipe 3 ends, is caliber that 4 minutes Grouting Pipe 4 inserts in the hole then, blocks the aperture with a sealing of hole bag again;
The the 3rd: install grouting pump 7, grouting pump 7 adopts KSZB160-2 type mining hand grouting pump, using method is with reference to its manual, in two material cups of grouting pump 7, add sealing material 2, the beginning press pump, treat that two discharge nozzles 6 all after the discharging, connect rifle head 5 again, and rifle head 5 is received Grouting Pipe 4 by four sub valves;
The 4th: with injecting a certain amount of sealing material 2 in the enclosure space of grouting pump 7 formation in boring, sealing material adopts the Sai Ruite sealing material, and its press pump number of times is calculated as follows:
In the formula: N-press pump number of times (back and forth being once circulation);
D-bore dia is got 75mm;
D-releasing pipe diameter gets 40mm;
L-sealed borehole length, the m of unit;
α-coefficient of foaming is got 7 times;
The pressure that the comes and goes v-grouting pump load that once circulates is got 160mL;
Can draw by above-mentioned formula:
Table 1: the relation table between sealed borehole length and sealing material and the press pump number of times
| Sealed borehole length (m) | Grouting amount ( l） | Press pump number of times (back and forth being once circulation) |
| 4 | 2.53 | 14 |
| 5 | 3.16 | 18 |
| 6 | 3.79 | 21 |
| 8 | 5.06 | 28 |
The 5th: obtain relation between drilling and sealing length and material injection rate and the press pump number of times by the aforementioned calculation formula, finish the press pump number of times of determining by above-mentioned formula after, unload rifle head 5 from Grouting Pipe 4, and close the valve of Grouting Pipe 4 ends;
The 6th: feed pipe 8 is inserted in the clear water that is mixed with a small amount of cleaning agent, and grouting pump 7 and rifle head 5 again with the clear water flushing once, unload feed pipe 8 and discharge nozzle 6 and rifle head 5 after washing, and wiped clean.
Carry out sealing of hole gas extraction contrast test with conventional packaging system and packaging system of the present invention, conventional packaging system sealing of hole 1-5# boring is first group, hole sealing device sealing of hole 6-10# boring of the present invention is second group, after the drilling and sealing success, every day the hole pumping and mining concentration data is measured by full-time data acquisition personnel, concrete outcome sees Table 2 and table 3.
Table 2Conventional hole sealing device sealing of hole after gas extraction concentration statistical form
The table 3 hole sealing device of the present invention hole gas pumping concentration statistical form of being honored as a queen
By comparative analysis in table 2, table 3 table as can be seen, when adopting conventional packaging system sealing of hole, the boring gas pumping concentration initial stage then decays to below 30% after can reaching 10% ~ 40%, 7 days, and 1-5# investigates boring monthly average concentration below 20%.And 6-10# adopts the present invention, and is as shown in table 3, and the boring gas pumping concentration initial stage can reach more than 50% ~ 90%, and after 14 days, concentration is still 40% ~ 80%, and mean concentration is about 50% after 28 days.
Obtain the mean concentration contrast block diagram of conventional extraction and mash gas extraction of the present invention by two list datas, as shown in Figure 2, as can be seen from Figure 2, the present invention under equal conditions effect than conventional hole sealing device is obvious, and the present invention has on average improved nearly 40% than conventional hole-sealing gas extraction concentration; Can not only improve extraction concentration and keep longer cycle, also can stop the decay of the higher extraction of concentration hole extraction concentration, and the time of its high concentration extraction of corresponding prolongation, can prolong extraction 1 ~ 3 month high concentration extraction time of boring (deciding), better guarantee the back production of work plane safety like the concrete gas situation in each ore deposit.
Claims (4)
1. gas drainage under suction hole sealing device, comprise releasing pipe (3), Grouting Pipe (4) and grouting pump (7), it is characterized in that: feed pipe (8) is connected to grouting pump (7), grouting pump (7) is connected with discharge nozzle (6), discharge nozzle (6) is connected with Grouting Pipe (4) by rifle head (5), there is sealing of hole bag (1) at releasing pipe (3) two ends, and sealing material (2) wraps tightly in releasing pipe (3) outer wall.
2. a kind of gas drainage under suction hole sealing device according to claim 1 is characterized in that: sealing material (2) is by adding the microdilatancy particle in the macromolecule polymeric material, mixing according to the 1:1 ratio.
3. a kind of gas drainage under suction hole sealing device according to claim 1 is characterized in that: sealing of hole bag (1) is positioned at 1.5 meters to 2 meters of releasing pipe (3) front end and place, aperture.
4. a kind of gas drainage under suction hole sealing device according to claim 1 is characterized in that: sealing material (2) is to inject macromolecule polymeric material in the enclosure space that forms by grouting pump (7) in boring to form, and the press pump number of times is pressed following formula calculating:
In the formula: N-press pump number of times (back and forth being once circulation);
-slip casting redundancy;
D-bore diameter;
D-releasing pipe diameter;
L-sealed borehole length;
α-coefficient of foaming;
The pressure that the comes and goes v-grouting pump load that once circulates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102334215A CN102287218A (en) | 2011-08-16 | 2011-08-16 | Gas drainage hole-sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102334215A CN102287218A (en) | 2011-08-16 | 2011-08-16 | Gas drainage hole-sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102287218A true CN102287218A (en) | 2011-12-21 |
Family
ID=45333941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102334215A Pending CN102287218A (en) | 2011-08-16 | 2011-08-16 | Gas drainage hole-sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102287218A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628345A (en) * | 2012-04-23 | 2012-08-08 | 中国矿业大学 | Sealing method of high sealing quasi-horizontal drilling hole |
| CN102704984A (en) * | 2012-04-28 | 2012-10-03 | 中国矿业大学 | Borehole high-concentration gas extraction and drainage method and device thereof |
| CN102704986A (en) * | 2012-06-26 | 2012-10-03 | 河北同成矿业科技有限公司 | Pressure-controlled hole sealing method for gas drainage hole |
| CN102829261A (en) * | 2012-09-25 | 2012-12-19 | 上海米维矿业科技有限公司 | Duplex pipe for gas draining and hole sealing by grouting |
| CN102913183A (en) * | 2012-10-26 | 2013-02-06 | 河南理工大学 | Multifunctional pneumatic sealing device and matched sealing process thereof |
| CN105114030A (en) * | 2015-08-20 | 2015-12-02 | 中国矿业大学 | Gas extraction drilling non-solidification constant-pressure slurry hole sealing method |
| CN105606773A (en) * | 2016-02-19 | 2016-05-25 | 龙岩学院 | Device for testing performance of mining hole sealing material and using method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU877070A1 (en) * | 1979-11-06 | 1981-10-30 | Донецкий государственный проектно-конструкторский и экспериментальный институт комплексной механизации шахт | Device for sealing away degassation well |
| RU2152518C1 (en) * | 1998-12-28 | 2000-07-10 | Национальный научный центр горного производства - ИГД им. А.А. Скочинского | Method of outgassing of chipped coal-bearing thickness |
| CN2903374Y (en) * | 2006-05-09 | 2007-05-23 | 中国矿业大学 | Fluid filling hole sealing device capable of cutting |
| CN200989213Y (en) * | 2006-12-13 | 2007-12-12 | 山西焦煤集团有限责任公司 | Pressure injection polyurethane hole sealing pump |
| CN101251030A (en) * | 2008-04-10 | 2008-08-27 | 中国矿业大学 | Secondary hole sealing method capable of improving coal bed drilling firedamp sucking concentration |
| CN101294500A (en) * | 2008-05-12 | 2008-10-29 | 淮南矿业(集团)有限责任公司 | Heavy pressure slip-casting hole-sealing method for large-diameter extraction borehole |
| CN201433788Y (en) * | 2009-06-26 | 2010-03-31 | 中国矿业大学 | Descending hole coal-bed gas pressure detection water pressure eliminator |
| CN202176359U (en) * | 2011-08-16 | 2012-03-28 | 贵州永聚恒丰科技发展有限公司 | Gas drainage hole sealing device |
-
2011
- 2011-08-16 CN CN2011102334215A patent/CN102287218A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU877070A1 (en) * | 1979-11-06 | 1981-10-30 | Донецкий государственный проектно-конструкторский и экспериментальный институт комплексной механизации шахт | Device for sealing away degassation well |
| RU2152518C1 (en) * | 1998-12-28 | 2000-07-10 | Национальный научный центр горного производства - ИГД им. А.А. Скочинского | Method of outgassing of chipped coal-bearing thickness |
| CN2903374Y (en) * | 2006-05-09 | 2007-05-23 | 中国矿业大学 | Fluid filling hole sealing device capable of cutting |
| CN200989213Y (en) * | 2006-12-13 | 2007-12-12 | 山西焦煤集团有限责任公司 | Pressure injection polyurethane hole sealing pump |
| CN101251030A (en) * | 2008-04-10 | 2008-08-27 | 中国矿业大学 | Secondary hole sealing method capable of improving coal bed drilling firedamp sucking concentration |
| CN101294500A (en) * | 2008-05-12 | 2008-10-29 | 淮南矿业(集团)有限责任公司 | Heavy pressure slip-casting hole-sealing method for large-diameter extraction borehole |
| CN201433788Y (en) * | 2009-06-26 | 2010-03-31 | 中国矿业大学 | Descending hole coal-bed gas pressure detection water pressure eliminator |
| CN202176359U (en) * | 2011-08-16 | 2012-03-28 | 贵州永聚恒丰科技发展有限公司 | Gas drainage hole sealing device |
Non-Patent Citations (1)
| Title |
|---|
| 刘春等: "带压定向注浆封孔技术在比德煤矿的应用", 《中国煤炭》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628345A (en) * | 2012-04-23 | 2012-08-08 | 中国矿业大学 | Sealing method of high sealing quasi-horizontal drilling hole |
| CN102628345B (en) * | 2012-04-23 | 2014-07-16 | 山西潞安环保能源开发股份有限公司 | Sealing method of high sealing quasi-horizontal drilling hole |
| CN102704984A (en) * | 2012-04-28 | 2012-10-03 | 中国矿业大学 | Borehole high-concentration gas extraction and drainage method and device thereof |
| CN102704984B (en) * | 2012-04-28 | 2014-12-17 | 中国矿业大学 | Borehole high-concentration gas extraction and drainage method and device thereof |
| CN102704986A (en) * | 2012-06-26 | 2012-10-03 | 河北同成矿业科技有限公司 | Pressure-controlled hole sealing method for gas drainage hole |
| CN102829261A (en) * | 2012-09-25 | 2012-12-19 | 上海米维矿业科技有限公司 | Duplex pipe for gas draining and hole sealing by grouting |
| CN102913183A (en) * | 2012-10-26 | 2013-02-06 | 河南理工大学 | Multifunctional pneumatic sealing device and matched sealing process thereof |
| CN102913183B (en) * | 2012-10-26 | 2015-11-04 | 河南理工大学 | Multifunctional pneumatic power hole sealing device and the hole-sealing technology supporting with it |
| CN105114030A (en) * | 2015-08-20 | 2015-12-02 | 中国矿业大学 | Gas extraction drilling non-solidification constant-pressure slurry hole sealing method |
| CN105114030B (en) * | 2015-08-20 | 2018-05-08 | 中国矿业大学 | A kind of non-condensable constant pressure slurries method for sealing of mash gas pumping drilling |
| CN105606773A (en) * | 2016-02-19 | 2016-05-25 | 龙岩学院 | Device for testing performance of mining hole sealing material and using method thereof |
| CN105606773B (en) * | 2016-02-19 | 2017-08-01 | 龙岩学院 | A kind of mining sealing material performance testing device and its application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102287218A (en) | Gas drainage hole-sealing device | |
| CN202176359U (en) | Gas drainage hole sealing device | |
| CN109505565B (en) | Method for extracting coal seam gas by water injection and gas injection alternating displacement | |
| CN105114030B (en) | A kind of non-condensable constant pressure slurries method for sealing of mash gas pumping drilling | |
| CN104314508A (en) | Hole sealing method for coal bed gas drainage drill hole | |
| CN104234740B (en) | A kind of low middle pressure air displacement high pressure coal seam gas train and method thereof | |
| CN106988780B (en) | A kind of girdle goaf paste body filling construction method | |
| CN102628352B (en) | Multi-section fixed point hydraulic fracturing method | |
| CN102140901A (en) | High pressure resistant drilled hole sealing method | |
| CN202081908U (en) | Hole sealing device for water gushing and gas drainage drilled hole | |
| CN203430473U (en) | Underground hydraulic fracturing drill hole sealing device of coal mine | |
| CN113250670B (en) | Single-hole multi-section synchronous control fracturing coal body permeability increasing system and method | |
| CN104295263A (en) | Radial hole sealing device for drill holes for exhausting coal bed gas | |
| CN110005393A (en) | A kind of underground coal mine waterpower sand fracturing system and fracturing process | |
| CN110541726A (en) | two-plugging two-injection one-return type through pipe direct-connection hole sealing method for coal mine gas drainage | |
| CN103883276B (en) | A kind of coal bed gas drainage drilling and sealing method | |
| CN111535790B (en) | Coal seam static expansion fracturing permeability-increasing equipment and method | |
| CN107023284A (en) | A kind of static expanding agent injected system and method for implanting | |
| CN114856503A (en) | Continuous dynamic sealing device for gas extraction drill hole and using method | |
| CN204877529U (en) | Coal seam infusion unites scour protection dust keeper with release big gun | |
| CN105317397A (en) | Double cloth bags type grouting sealing set and method | |
| CN109026040A (en) | A kind of synchronization bi-material layers sediment improvement system for earth pressure balanced shield, EPBS | |
| CN117662229A (en) | Novel coal seam three-phase fracturing permeability-increasing method | |
| CN201763377U (en) | Gas and water extraction device and system | |
| CN205743827U (en) | Mash gas extraction drilling cuttings backfills pouch slip casting type hole packer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111221 |