CN110630208A - Multistage sectional grouting plugging device for gas extraction drill hole and sealing method thereof - Google Patents
Multistage sectional grouting plugging device for gas extraction drill hole and sealing method thereof Download PDFInfo
- Publication number
- CN110630208A CN110630208A CN201910821076.3A CN201910821076A CN110630208A CN 110630208 A CN110630208 A CN 110630208A CN 201910821076 A CN201910821076 A CN 201910821076A CN 110630208 A CN110630208 A CN 110630208A
- Authority
- CN
- China
- Prior art keywords
- grouting
- annular
- bag
- groove
- air
- 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
- 238000000605 extraction Methods 0.000 title claims description 42
- 238000007789 sealing Methods 0.000 title claims description 24
- 238000000034 method Methods 0.000 title claims description 15
- 238000002955 isolation Methods 0.000 claims abstract description 19
- 238000005422 blasting Methods 0.000 claims abstract description 14
- 238000005553 drilling Methods 0.000 claims abstract description 9
- 238000011049 filling Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 8
- 238000004880 explosion Methods 0.000 claims description 7
- 238000005065 mining Methods 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 6
- 239000011083 cement mortar Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 229920002521 macromolecule Polymers 0.000 claims description 2
- 238000007569 slipcasting Methods 0.000 abstract description 18
- 230000011218 segmentation Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 229920002635 polyurethane Polymers 0.000 description 5
- 239000004814 polyurethane Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000002775 capsule Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Landscapes
- 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)
- Pipe Accessories (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The utility model provides a multistage segmentation slip casting plugging device of gas drainage drilling, including inflating bag, wet return and slip casting pipe, its main points are that inflating bag is cylindrical inflating bag, be equipped with a plurality of annular slip casting grooves on the outside periphery of inflating bag cylinder respectively in the concave, the protruding section at a plurality of annular slip casting groove both ends is slip casting isolation platform respectively, inflating mouth is provided with to inflating bag one end, it is provided with the wet return respectively to seal fixedly on the inner wall on a plurality of annular slip casting groove upper portions, the wet return front end is inserted and is established in the inflating bag, the wet return is linked with a plurality of wet return respectively, it is provided with the blasting valve respectively to seal fixedly on the inner wall of a plurality of annular slip casting groove lower parts, the slip casting front end is inserted and is established in the inflating bag, the slip casting pipe is linked with a plurality of blasting valves respectively. The invention has the advantages of simple structure, simple and convenient operation, low cost, excellent performance, outstanding technical advantages and wide popularization and application prospect.
Description
Technical Field
The invention belongs to the technical field of sealing of coal mine underground gas extraction drill holes, and particularly relates to a mining gas extraction drill hole multistage sectional grouting plugging device and a sealing method thereof.
Background
The gas accident is one of the most serious natural disaster accidents in the coal mine safety production in China. As early as the 50 s in the 20 th century, gas extraction is regarded as an important measure for controlling coal mine gas disasters by China and is popularized and applied to high-gas mines and coal and gas outburst mines. The gas extraction technology in China has made remarkable progress over decades, and plays a vital role in the process of treating coal mine gas and preventing gas accidents. However, the gas extraction rate and the gas extraction concentration of many mines in China still do not reach the standard at present, and besides the coal seam gas basic work is not enough and the gas extraction method is not properly selected, another important reason is that the gas extraction drilling and sealing effect is poor. Meanwhile, for gas extraction of spontaneous combustion and coal layers easy to combust automatically, natural ignition of coal walls at orifices can be easily caused by long-term extraction of drill holes with low gas concentration. Therefore, the hole sealing quality of the extraction drill hole is a basic guarantee measure for well performing outburst elimination, gas control and fire prevention and extinguishing work on the coal seam. How to improve the hole sealing quality and enhance the gas extraction effect is a key technical problem to be solved urgently and is also an important guarantee for the safe production of mines.
At present, the research on drilling and plugging technologies and equipment at home and abroad mainly focuses on several major categories such as cement mortar hole sealing method, polyurethane hole sealing method and 'two-plugging and one-injection' hole sealing method with pressure. The hole sealing modes are widely applied to various mining areas in China, but due to the limitation of the performances of the technology, materials and equipment, the hole sealing effect is still unsatisfactory. Therefore, a novel efficient plugging technology and equipment for gas extraction drill holes are urgently needed to be researched and developed, and the difficult problems of effectiveness, accuracy and economical efficiency of drill hole plugging are solved.
Disclosure of Invention
The invention aims to provide a multistage sectional grouting plugging device for gas extraction drill holes, which can realize repeated use, multistage sectional pressurized grouting and adaptation to drill holes with different inclination angles.
The invention also aims to provide a multistage sectional grouting plugging sealing method for the gas extraction drill hole.
The technical scheme adopted by the invention is as follows:
the utility model provides a multistage segmentation slip casting plugging device of gas drainage drilling, including inflating bag, wet return and slip casting pipe, its main points are that inflating bag is cylindrical inflating bag, be equipped with a plurality of annular slip casting grooves on the outside periphery of inflating bag cylinder respectively in the concave, the protruding section at a plurality of annular slip casting groove both ends is slip casting isolation platform respectively, inflating mouth is provided with to inflating bag one end, it is provided with the wet return respectively to seal fixedly on the inner wall on a plurality of annular slip casting groove upper portions, the wet return front end is inserted and is established in the inflating bag, the wet return is linked with a plurality of wet return respectively, it is provided with the blasting valve respectively to seal fixedly on the inner wall of a plurality of annular slip casting groove lower parts, the slip casting front end is inserted and is established in the inflating bag, the slip casting pipe is linked with a plurality of blasting valves respectively.
Two annular grouting grooves are concavely arranged on the outer periphery of the cylinder of the inflatable bag at equal intervals, and the two annular grouting grooves are respectively a first annular grouting groove and a second annular grouting groove.
Rubber particles are fixedly arranged on the outer annular end faces of the grouting isolation tables respectively, and polymer nanometer waterproof coatings are arranged on the inner end faces of the annular grouting grooves respectively.
The external diameter of the plurality of grouting isolation platforms is 0.8 ~ 1.2.2 times of the diameter of the drilled hole, the length of the plurality of grouting isolation platforms is 0.1 ~ 0.2.2 m, the diameter of the plurality of annular grouting grooves is 0.5 ~ 0.7.7 times of the diameter of the drilled hole, and the length of the plurality of annular grouting grooves is 3 ~ 5 m.
The plurality of the blasting valves and the plurality of the water return valves can be set to have different opening pressures, segmented grouting can be realized by adjusting grouting pressure, and the opening pressure of the blasting valve in the first annular grouting groove is less than the opening pressure of the water return valve in the first annular grouting groove and less than the opening pressure of the blasting valve in the second annular grouting groove and less than the opening pressure of the water return valve in the second annular grouting groove.
A sealing method of a multistage sectional grouting plugging device for a gas extraction drill hole is carried out according to the following steps:
the method comprises the following steps: the inside of the inflatable bag is filled with air through the inflation inlet, the original volume is kept and the inflatable bag is not expanded, the diameter of the grouting isolation platform of the inflatable bag is 0.8 times that of the drilled hole, and the diameter of the annular grouting grooves is 0.5 times that of the drilled hole. Inserting the other end of the inflatable bag into the constructed drill hole to a specified position; after the air-filled bag is in place, high-pressure air is filled into the air-filled bag through an air filling port, the air filling pressure is 2MPa, so that a grouting isolation platform of the air-filled bag radially expands and deforms and is in close contact with the inner wall of a drill hole, and pressure is maintained through a stop valve after air filling is finished;
step two: selecting mining superfine quick-setting cement as a grouting material, grouting between a first annular grouting groove and a drill hole through a grouting pipe through a first annular grouting groove internal explosion valve, gradually increasing grouting pressure until the first annular grouting groove internal explosion valve is opened, gradually filling the first annular grouting groove with the superfine cement along with the continuous increase of the grouting pressure, infiltrating into fine cracks of the inner wall of the drill hole in the area, and stopping grouting until a first annular grouting groove internal return valve is opened;
step three: replacing the mine cement mortar as a grouting material, grouting the space between the second annular grouting groove and the drill hole through the grouting pipe through the second annular grouting groove internal explosion valve, gradually increasing the grouting pressure until the second annular grouting groove internal explosion valve is opened, gradually filling the second annular grouting groove with the cement mortar under the action of the grouting pressure, and infiltrating into larger cracks in the area until the second annular grouting groove internal backwater valve is opened, and stopping grouting;
step four: after the injected slurry is solidified, the air in the air bag is pumped out, and the air bag can be easily separated from the solidified slurry material because the outer surface of the air bag in contact with the slurry is provided with the polymer nano waterproof coating, so that the air bag after being pumped out and drilled can be repeatedly used.
After grouting and plugging are completed and gas extraction is needed (as shown in figure 3), the gas extraction pipeline bundled with the polyurethane hole-sealing capsule is sent to a position between two annular grouting bodies in a drill hole, after polyurethane materials react and expand, the space between the two annular grouting bodies and a gap between an extraction pipe and the hole wall are filled, the plugged gas extraction drill hole is connected with a gas drainage main pipeline through the extraction pipe, and the gas extraction pipeline is put into a pump.
The water return valve is arranged at the top of the annular grouting groove, and the grouting blasting valve is arranged at the bottom of the annular grouting groove, so that the gas in a drill hole can be completely discharged, and the grouting effect is improved.
According to the invention, by utilizing the multi-stage sectional grouting structure functional design and adopting grouting hole sealing materials with different characteristics according to the distribution characteristics of cracks around the drill hole, the partitioned refined plugging of a gas extraction drill hole crack field is realized, and the gas hole sealing effect is greatly improved; meanwhile, the original 'two-plug one-injection' hole sealing process is replaced by the design of the variable-diameter special-shaped air bag, on the premise of hole sealing under pressure, the whole recovery and reuse of the plugging device are realized, and the hole sealing cost is greatly reduced. By the beneficial invention, the difficult problems of effectiveness, accuracy and economical efficiency of gas extraction drilling and hole sealing are fundamentally improved. The invention has the advantages of simple structure, simple and convenient operation, low cost, excellent performance, outstanding technical advantages and wide popularization and application prospect.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of a grouting plugging structure when the invention is used.
FIG. 3 is a schematic view of a gas extraction structure after grouting plugging is completed.
Detailed Description
A multistage sectional grouting plugging device for a gas extraction drilling hole comprises a gas filling bag 1, a water return pipe 2 and a grouting pipe 3, and is characterized in that the gas filling bag 1 is a cylindrical gas filling bag, two annular grouting grooves 4 are respectively and concavely arranged on the outer periphery of the cylinder of the gas filling bag 1, the two annular grouting grooves 4 are respectively a first annular grouting groove 9 and a second annular grouting groove 10, the diameter of each annular grouting groove 4 is 0.5 ~.7 times of the diameter of a drilling hole, the length of each annular grouting groove 4 is 3 ~ m, a polymer nanometer waterproof coating 12 is respectively arranged on the inner end surfaces of the two annular grouting grooves 4, the protruding sections at the two ends of the two annular grouting grooves 4 are respectively grouting isolation platform 5, rubber particles 11 are respectively and fixedly arranged on the outer annular end surface of the grouting isolation platform 5, the outer diameter of the grouting isolation platform 5 is 0.8 ~.2 times of the diameter of the drilling hole, the outer diameter of the grouting isolation platform 5 is 0.8 MPa of the inner end of the annular grouting bag 5, the annular grouting bag is more than 1, the inner wall of the annular grouting bag 2 bag is fixedly connected with the inner wall of the inner grouting groove, the inner wall of the annular grouting bag 1 annular grouting bag, the annular grouting bag is provided with a plurality of the annular grouting opening and the annular grouting valve, the annular grouting valve is provided with the annular grouting opening, the annular grouting valve, the annular grouting opening of the annular grouting groove, the annular grouting valve, the annular grouting opening of the annular grouting groove, the annular grouting opening of the annular grouting groove, the annular grouting opening of the annular grouting groove is more grouting groove, the annular grouting groove, the.
A multistage sectional grouting plugging and sealing method for a gas extraction drill hole comprises the following steps:
the method comprises the following steps: the air is filled into the inflatable bag 1 through the inflation inlet 6, the original volume is kept and the inflatable bag is not expanded, the diameter of the grouting isolation platform 5 of the inflatable bag 1 is 0.8 time of that of the drilled hole, and the diameter of the annular grouting grooves 4 is 0.5 time of that of the drilled hole. Inserting the other end of the air-filled bag 1 into a specified position in a constructed drill hole; after the air-filled bag 1 is in place, high-pressure air is filled into the air-filled bag 1 through an inflation inlet 6, the inflation pressure is 2MPa, so that a grouting isolation platform 5 of the air-filled bag 1 is radially expanded and deformed and is in close contact with the inner wall of a drill hole, and pressure is maintained through a stop valve after inflation is finished;
step two: selecting mining superfine quick-setting cement as a grouting material, grouting between a first annular grouting groove 9 and a drill hole through a grouting pipe 3 through a blast valve 8 in the first annular grouting groove 9, gradually increasing grouting pressure until the blast valve 8 in the first annular grouting groove 9 is opened, gradually filling the first annular grouting groove 9 with the superfine cement along with the continuous increase of grouting pressure, infiltrating into fine cracks on the inner wall of the drill hole in the area, and stopping grouting until a return valve 7 in the first annular grouting groove 9 is opened;
step three: replacing the mining cement mortar as a grouting material, grouting between the second annular grouting groove 10 and the drill hole through the grouting pipe 3 and the blasting valve 8 in the second annular grouting groove 10, gradually increasing the grouting pressure until the blasting valve 8 in the second annular grouting groove 10 is opened, gradually filling the second annular grouting groove 10 with superfine cement under the action of the grouting pressure, and infiltrating into larger cracks in the area until the water return valve 7 in the second annular grouting groove 10 is opened, and stopping grouting;
step four: after the grouting liquid is solidified, the air in the air-filled bag 1 is pumped out, and the air-filled bag 1 can be easily separated from the solidified slurry material because the macromolecule nanometer waterproof coating 12 is arranged on the outer surface of the air-filled bag 1, which is in contact with the slurry, and the air-filled bag 1 after being pumped out and drilled can be repeatedly used.
After grouting and plugging are completed and gas extraction is needed (as shown in figure 3), a gas extraction pipeline 14 bundled with a polyurethane hole-sealing capsule 13 is sent to a position between two annular grouting bodies 15 in a drill hole, after polyurethane materials react and expand, the space between the two annular grouting bodies 15 and a gap between the gas extraction pipeline 14 and the hole wall are filled, the plugged gas extraction drill hole is connected with a gas extraction main pipeline through the gas extraction pipeline 14, and then the gas extraction pipeline is put into a pump.
Claims (6)
1. A multistage segmental grouting plugging device for gas extraction drilling comprises a gas filling bag (1), a water return pipe (2) and a grouting pipe (3), and is characterized in that the gas filling bag (1) is a cylindrical gas filling bag, a plurality of annular grouting grooves (4) are respectively and concavely arranged on the periphery of the outside of the cylinder of the gas filling bag (1), the protruding sections at the two ends of the annular grouting grooves (4) are grouting isolation platforms (5), one end of the gas filling bag (1) is provided with an inflation inlet (6), the inner walls of the upper parts of the annular grouting grooves (4) are respectively and fixedly provided with a water return valve (7), the front end of the water return pipe (2) is inserted into the gas filling bag (1), the water return pipe (2) is respectively connected with the plurality of water return valves (7), the inner walls of the lower parts of the annular grouting grooves (4) are respectively and fixedly provided with an explosion valve (8) in a sealing manner, and the front end of the grouting pipe (3) is inserted into the gas filling bag (1), the grouting pipes (3) are respectively connected with a plurality of blasting valves (8).
2. The multistage sectional grouting plugging device for the gas extraction drill hole according to claim 1, wherein two annular grouting grooves (4) are respectively concavely formed in the outer periphery of the cylinder of the gas-filled bag (1), and the two annular grouting grooves (4) are respectively a first annular grouting groove (9) and a second annular grouting groove (10).
3. The multistage sectional grouting plugging device for the gas extraction drill hole according to claim 1, wherein rubber particles (11) are respectively and fixedly arranged on the outer annular end surfaces of the plurality of grouting isolation platforms (5), and the inner end surfaces of the plurality of annular grouting grooves (4) are respectively provided with a polymer nano waterproof coating (12).
4. The multistage sectional grouting plugging device for the gas extraction drill hole according to claim 1, wherein the outer diameter of the grouting isolation platforms (5) is 0.8 ~ 1.2.2 times of the drill hole diameter, the length of the grouting isolation platforms (5) is 0.1 ~ 0.2.2 m, the diameter of the annular grouting grooves (4) is 0.5 ~ 0.7.7 times of the drill hole diameter, and the length of the annular grouting grooves (4) is 3 ~ 5 m.
5. The multistage sectional grouting plugging device for the gas extraction drill hole according to claims 1 and 2, characterized in that the plurality of blasting valves (8) and the plurality of water return valves (7) can be set to have different opening pressures, sectional grouting can be realized by adjusting grouting pressure, and the opening pressure of the blasting valve (8) in the first annular grouting groove (9) is less than the opening pressure of the water return valve (7) in the first annular grouting groove (9) is less than the opening pressure of the blasting valve (8) in the second annular grouting groove (10) is less than the opening pressure of the water return valve (7) in the second annular grouting groove (10).
6. The gas extraction borehole multistage sectional grouting plugging device according to claim 1, characterized in that a sealing method is performed according to the following steps:
the method comprises the following steps: the air is filled into the inflatable bag (1) through the inflation inlet (6), the original volume is kept and the inflatable bag is not expanded, the diameter of the grouting isolation platform (5) of the inflatable bag (1) is 0.8 time of that of the drilled hole, and the diameter of the annular grouting grooves (4) is 0.5 time of that of the drilled hole. Inserting the other end of the air-filled bag (1) into a constructed drill hole to a specified position; after the air-filled bag (1) is in place, high-pressure air is filled into the air-filled bag (1) through an air filling port (6), the air filling pressure is 2MPa, so that a grouting isolation platform (5) of the air-filled bag (1) is subjected to radial expansion deformation and is in close contact with the inner wall of a drilled hole, and the pressure is maintained through a stop valve after the air filling is finished;
step two: selecting mining superfine quick-setting cement as a grouting material, grouting the space between a first annular grouting groove (9) and a drill hole through a grouting pipe (3) and an implosion valve (8) of the first annular grouting groove (9), gradually increasing grouting pressure until the implosion valve (8) of the first annular grouting groove (9) is opened, gradually filling the first annular grouting groove (9) with the superfine cement along with the continuous increase of the grouting pressure, infiltrating into fine cracks on the inner wall of the drill hole in the area until a water return valve (7) in the first annular grouting groove (9) is opened, and stopping grouting;
step three: replacing the mining cement mortar as a grouting material, grouting the space between the second annular grouting groove (10) and the drill hole through the grouting pipe (3) and the second annular grouting groove (10) internal explosion valve (8), gradually increasing the grouting pressure until the second annular grouting groove (10) internal explosion valve (8) is opened, gradually filling the second annular grouting groove (10) with superfine cement under the action of the grouting pressure, and infiltrating into the larger cracks in the area until the water return valve (7) in the second annular grouting groove (10) is opened, and stopping grouting;
step four: after the grouting liquid is solidified, air in the air-filled bag (1) is pumped out, and the air-filled bag (1) can be easily separated from the solidified slurry material due to the macromolecule nanometer waterproof coating (12) on the outer surface of the air-filled bag (1) in contact with the slurry, so that the air-filled bag (1) after being pumped out and drilled can be repeatedly used for multiple times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910821076.3A CN110630208A (en) | 2019-09-02 | 2019-09-02 | Multistage sectional grouting plugging device for gas extraction drill hole and sealing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910821076.3A CN110630208A (en) | 2019-09-02 | 2019-09-02 | Multistage sectional grouting plugging device for gas extraction drill hole and sealing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110630208A true CN110630208A (en) | 2019-12-31 |
Family
ID=68969896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910821076.3A Pending CN110630208A (en) | 2019-09-02 | 2019-09-02 | Multistage sectional grouting plugging device for gas extraction drill hole and sealing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110630208A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282693A (en) * | 2020-12-28 | 2021-01-29 | 山西工程技术学院 | Method for closing inclined large-diameter drill hole of coal mine |
| CN113236347A (en) * | 2021-06-28 | 2021-08-10 | 山东科技大学 | Full-automatic gas extraction multiple hole sealing system and method |
| CN113494264A (en) * | 2021-07-09 | 2021-10-12 | 中煤科工集团西安研究院有限公司 | Water-resisting layer reinforced grouting transformation device and method based on staged fracturing |
| CN113605961A (en) * | 2021-08-12 | 2021-11-05 | 煤炭科学技术研究院有限公司 | Coal mine underground gas injection, displacement, injection and extraction dual-purpose recyclable hole sealing device and method |
| CN117780298A (en) * | 2024-02-23 | 2024-03-29 | 太原理工大学 | Integrated hole sealing extraction device and method embedded with grouting channel and bag |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101070072B1 (en) * | 2011-02-15 | 2011-10-04 | (주)한토건설 | A multistaged equipment of pipe grouting by double packer system and its construction |
| CN104060965A (en) * | 2014-06-23 | 2014-09-24 | 贾希成 | Adjustable annular double-layer air bag hole sealing device and method for performing hole sealing |
| CN206513338U (en) * | 2016-11-23 | 2017-09-22 | 山西景安机电制造有限公司 | A kind of slip casting type hole packer of new blocked gas drainage hole |
| CN207048813U (en) * | 2017-08-16 | 2018-02-27 | 阳泉科汇瓦斯检测技术有限公司 | Sealing and leakage plugging device for gas pumping |
| CN207892585U (en) * | 2018-02-11 | 2018-09-21 | 山西三元福达煤业有限公司 | Three stifled two note hole sealing devices of coal mine gas extraction drill hole |
| CN109339736A (en) * | 2018-12-19 | 2019-02-15 | 河南理工大学 | A kind of mash gas pumping drilling solid-liquid two-phase hole sealing device and technique |
| CN210768693U (en) * | 2019-09-02 | 2020-06-16 | 煤科集团沈阳研究院有限公司 | Multistage sectional grouting plugging device for gas extraction drill hole |
-
2019
- 2019-09-02 CN CN201910821076.3A patent/CN110630208A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101070072B1 (en) * | 2011-02-15 | 2011-10-04 | (주)한토건설 | A multistaged equipment of pipe grouting by double packer system and its construction |
| CN104060965A (en) * | 2014-06-23 | 2014-09-24 | 贾希成 | Adjustable annular double-layer air bag hole sealing device and method for performing hole sealing |
| CN206513338U (en) * | 2016-11-23 | 2017-09-22 | 山西景安机电制造有限公司 | A kind of slip casting type hole packer of new blocked gas drainage hole |
| CN207048813U (en) * | 2017-08-16 | 2018-02-27 | 阳泉科汇瓦斯检测技术有限公司 | Sealing and leakage plugging device for gas pumping |
| CN207892585U (en) * | 2018-02-11 | 2018-09-21 | 山西三元福达煤业有限公司 | Three stifled two note hole sealing devices of coal mine gas extraction drill hole |
| CN109339736A (en) * | 2018-12-19 | 2019-02-15 | 河南理工大学 | A kind of mash gas pumping drilling solid-liquid two-phase hole sealing device and technique |
| CN210768693U (en) * | 2019-09-02 | 2020-06-16 | 煤科集团沈阳研究院有限公司 | Multistage sectional grouting plugging device for gas extraction drill hole |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282693A (en) * | 2020-12-28 | 2021-01-29 | 山西工程技术学院 | Method for closing inclined large-diameter drill hole of coal mine |
| CN113236347A (en) * | 2021-06-28 | 2021-08-10 | 山东科技大学 | Full-automatic gas extraction multiple hole sealing system and method |
| CN113236347B (en) * | 2021-06-28 | 2022-08-02 | 山东科技大学 | Full-automatic gas extraction multiple hole sealing system and method |
| CN113494264A (en) * | 2021-07-09 | 2021-10-12 | 中煤科工集团西安研究院有限公司 | Water-resisting layer reinforced grouting transformation device and method based on staged fracturing |
| CN113605961A (en) * | 2021-08-12 | 2021-11-05 | 煤炭科学技术研究院有限公司 | Coal mine underground gas injection, displacement, injection and extraction dual-purpose recyclable hole sealing device and method |
| CN113605961B (en) * | 2021-08-12 | 2023-07-14 | 煤炭科学技术研究院有限公司 | Underground coal mine gas injection displacement injection and extraction dual-purpose recoverable hole sealing device and method |
| CN117780298A (en) * | 2024-02-23 | 2024-03-29 | 太原理工大学 | Integrated hole sealing extraction device and method embedded with grouting channel and bag |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110630208A (en) | Multistage sectional grouting plugging device for gas extraction drill hole and sealing method thereof | |
| CN108643877B (en) | Coal mine underground coal seam long drilling staged fracturing permeability-increasing and gas extraction method | |
| CN105332684B (en) | A kind of water under high pressure is quick-fried and CO2The coal bed gas displacement extraction technique that pressure break is combined | |
| CN105756599A (en) | Coal mine two-end gas plug and middle water seal layer penetrating drill hole sealing device and method | |
| WO2019210657A1 (en) | Integrated hole sealing device for loose blasting and water injection of underground well deep hole | |
| CN108678802A (en) | A kind of coal mine bores, punching, takes out integrated outburst prevention device and method | |
| CN101307695B (en) | Coal mine gas pre-draining borehole sealing method adopting aerated capsule as temporary hole bottom | |
| CN113250670B (en) | Single-hole multi-section synchronous control fracturing coal body permeability increasing system and method | |
| CN205063929U (en) | Colliery is sealed in pit and is pressed integration segmentation hydraulic fracturing device | |
| CN112145144B (en) | Based on multistage liquid CO2Phase-change composite fracturing transformation system and method | |
| CN110439497B (en) | Drilling multi-section plugging, fracturing, grouting and water injection integrated equipment and use method | |
| CN102704905A (en) | Segmental hydraulic fracturing coal seam pressure releasing device and method | |
| CN111911225B (en) | Drilling and water injection integrated device and method for coal seam | |
| CN113914818B (en) | Secondary grouting repairing method for gas extraction failure drilling hole sealing section | |
| CN109267983A (en) | Horizontal well refracturing device and method based on the complete well of the preset tubing string of naked eye | |
| CN102200002A (en) | method and device for sealing upward hole at high pressure by sections | |
| CN114135249A (en) | Reusable and automatic pressure supplementing gas extraction drilling and sealing system and working method thereof | |
| CN110080763B (en) | Coal seam surrounding rock pressure relief method based on internal injection type static crushing pressure relief mechanism | |
| CN114251073A (en) | Variable-diameter bag type mining grouting hole sealing device and method | |
| CN210768693U (en) | Multistage sectional grouting plugging device for gas extraction drill hole | |
| CN206233896U (en) | For the anti-pumping blocking of gas pumping and the outer plugging device of drainage holes | |
| CN110541697B (en) | Expansion hose type hydraulic fracturing method for permeability increase of coal seam | |
| CN219101298U (en) | Degradable expansion rubber plug for oil pipe | |
| CN103541679B (en) | Method for sealing underground hydraulic fracture drilled hole of coal mine in combined manner | |
| CN205477511U (en) | Prevent releasing hydraulic fracturing hole sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |