CN220185172U - Portable quick plug and filling device special for ultra-high water filling mining of coal mine - Google Patents
Portable quick plug and filling device special for ultra-high water filling mining of coal mine Download PDFInfo
- Publication number
- CN220185172U CN220185172U CN202320985773.4U CN202320985773U CN220185172U CN 220185172 U CN220185172 U CN 220185172U CN 202320985773 U CN202320985773 U CN 202320985773U CN 220185172 U CN220185172 U CN 220185172U
- Authority
- CN
- China
- Prior art keywords
- section
- hose
- hard tube
- filling
- cuff
- 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.)
- Active
Links
- 239000003245 coal Substances 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000005065 mining Methods 0.000 title claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims description 11
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 238000005429 filling process Methods 0.000 abstract description 15
- 239000002002 slurry Substances 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007569 slipcasting Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 241000208202 Linaceae Species 0.000 description 2
- 235000004431 Linum usitatissimum Nutrition 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009123 feedback regulation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Abstract
The utility model relates to a portable rapid plug and a filling device special for ultra-high water filling mining of a coal mine, and belongs to the technical field of underground construction production of the coal mine. Including hard tube and the hose that link together through first coupling, the cuff that fills the package has the cuff that the cover was established on the hard tube and cup joints the section, the hard tube is kept away from the one end of hose and is had the hard tube grafting section that corresponds with the cuff and cup joints the section, and hard tube grafting section department is provided with annular groove, and the cuff cup joints the radial outside of section and is equipped with the adjustable clamp that corresponds with annular groove, the cuff cup joints the section cover and establishes behind the hard tube grafting section to fix adjustable clamp in annular groove department, the hose is kept away from the one end of hard tube and is provided with the quick coupling of second. The utility model has the following beneficial effects: the device can realize reliable and quick connection, and can sense the pressure of filling slurry by using the hose section in the filling process, so that the size of the grouting valve can be adjusted as required, the dynamic adjustment of the filling speed can be realized, and the filling safety can be ensured.
Description
Technical Field
The utility model relates to a portable rapid plug and a filling device special for ultra-high water filling mining of a coal mine, and belongs to the technical field of underground construction production of the coal mine.
Background
With the rapid development of coal technology, high-yield and high-efficiency coal mining working surfaces with millions of tons of production in the years are sequentially developed; the mine pressure is severe when the high-yield and high-efficiency working surfaces, particularly the large mining height and top coal caving working surfaces, and the working surface is on the side and roof caving; once the working face is subjected to roof fall accidents, the formed high-rise area can bring gas overrun and gas explosion risks, and after roof fall, the hydraulic support of the working face loses the force foundation and cannot pass through the high-rise area, so that the working face is stopped for a long time; the existing method for processing roof falling of the working face mainly adopts a method for constructing a wood pile, and the processing method has a plurality of defects, namely, the labor intensity of workers is high, and a pit wood needs to be piled up deep into a high-rise area until the top of the high-rise area; secondly, the operation environment is dangerous, and rock blocks possibly fall down at any time in a high-rise area, so that a plurality of potential safety hazards exist; besides, the construction speed is severely limited due to the narrow operation space.
The patent application with the patent number of CN201620063119.8 discloses a filling device for a high-rise area of a coal face of a coal mine, which can solve the problems, and comprises a filling bag, a grouting pipe and an air inlet pipe, wherein the grouting pipe and the air inlet pipe are inserted into the filling bag. The utility model can solve the problem that the high-rise area of the coal face of the coal mine is difficult to process rapidly and safely. The system has the advantages of simple structure, convenient bag opening, good safety performance and high construction speed, can reliably ensure the filling quality of the high-rise area of the coal mine, and has remarkable economic and technical benefits. Has good popularization prospect in the field of coal mine coal face high-rise area treatment.
Although the above patent can realize the function of filling the working surface with ultra-high water, the prior art has incomplete consideration and the following disadvantages:
when the working surface is filled with ultra-high water, the fire hose led out from the grouting valve is not firmly overlapped with the cuffs of the filling bag, so that falling off is easily caused, and filling is affected; if the fire hose is replaced by a hard tube, the hard tube cannot truly sense the filling pressure.
What is needed is a portable rapid plug and a filling device special for ultra-high water filling mining of a coal mine, which can realize reliable and rapid connection, and can also utilize a hose section to sense the pressure of filling slurry in the filling process, so as to adjust the size of a grouting valve as required, realize the dynamic adjustment of the filling speed, ensure the filling safety, and provide the portable rapid plug and the filling device special for ultra-high water filling mining of the coal mine for the purpose.
Disclosure of Invention
In order to solve one of the above problems, according to the above shortcomings in the prior art, the present utility model aims to solve the technical problems: how to realize reliable and quick connection, and can utilize hose section to sense the pressure of filling slurry in the filling process, and then adjust grouting valve size as required, realize the dynamic adjustment of filling rate, ensure filling safety, provide a colliery ultra-high water filling exploitation special portable quick plug and filling device for this.
The portable rapid plug special for the ultra-high water filling mining of the coal mine is characterized by comprising a hard tube and a hose which are connected together through a first pipe joint, wherein the cuff of a filling bag is provided with a cuff sleeving section sleeved on the hard tube, one end of the hard tube, which is far away from the hose, is provided with a hard tube sleeving section corresponding to the cuff sleeving section, an annular groove is formed in the hard tube sleeving section, an adjustable clamp corresponding to the annular groove is arranged on the radial outer side of the cuff sleeving section, the cuff sleeving section is sleeved behind the hard tube sleeving section, the adjustable clamp is fixed at the annular groove, and a second rapid pipe joint is arranged at one end of the hose, which is far away from the hard tube.
The second quick pipe joint is used for being connected with a discharging pipe of grouting supply equipment, the sleeve opening sleeve joint section is sleeved behind the hard pipe insertion section, and the adjustable clamp is fixed at the annular groove, so that reliable and quick connection can be realized, the filling slurry pressure can be perceived by using the hose section in the filling process (the filling slurry pressure is consistent with the expansion pressure of the hose, visual measurement can be realized, manual pressing measurement can be realized, and the hose and the force transducer can be arranged between two flat plates for accurate measurement), further the size of a grouting valve is adjusted, the dynamic adjustment of the filling speed is realized, and the filling safety is ensured.
Preferably, the annular grooves are at least provided with one group along the length direction of the hard pipe, and the number of the annular grooves is matched with the number of the adjustable clamps.
Preferably, the length of the hard tube is set to be 0.8m, the diameter of the hard tube is matched with the sleeve joint section, and the length of the hose is set to be 1.5m.
Preferably, the device further comprises a measuring device for measuring the expansion pressure of the hose, the device comprising two plates and a load cell device interposed between the two plates.
Preferably, the hard tube is made of hard plastic.
Preferably, the hose is made of a fire hose, the traditional fire hose takes rubber as a lining, the outer surface of the traditional fire hose is wrapped with flax braid, and the hose is divided into four types of 0.8MPa, 1.0MPa, 1.3MPa and 1.6MPa according to the bearing working pressure.
Preferably, the adjustable clamp is a stainless steel hose clamp.
Preferably, the hose includes from inside to outside rubber inner liner, compressive layer, wearing layer and the weaving layer that connects gradually, the compressive layer includes from inside to outside carbon fiber layer, glass fiber layer and the nylon fibrous layer that connects gradually, through the cooperation of above-mentioned structure, plays the effect that improves the compressive strength of hose, has solved the fire hose on the current market and does not possess compressive high strength's function, has prolonged the life of hose, avoids the hose to blow out because of breaking influences the use as far as possible.
Preferably, the first pipe joint is a high-pressure self-tightening flange for a pipeline.
Preferably, the second quick pipe joint is a high-pressure self-tightening flange for a pipeline.
The utility model also discloses a filling device which is characterized by comprising the portable rapid plug special for the ultra-high water filling exploitation of the coal mine, and further comprising grouting supply equipment, wherein a grouting valve for controlling the opening and the closing is arranged on a discharging pipe of the grouting supply equipment, a second rapid pipe joint is detachably arranged at an outlet of the discharging pipe, the hard pipe is connected with a cuff of a filling bag, the pressure of filling slurry is sensed by a hose section in the filling process, the size of the grouting valve is further regulated, the dynamic regulation of the filling speed is realized, the problems of falling off of a lap joint part, timely sensing and feedback regulation of the filling pressure and the like are solved, part hidden danger existing in the filling process is further eliminated, meanwhile, the waste of filling materials is reduced, the labor intensity of workers is reduced, and the filling efficiency is improved.
Compared with the prior art, the utility model has the following beneficial effects:
the portable rapid plug special for the ultra-high water filling mining of the coal mine can realize reliable and rapid connection, and can sense the pressure of filling slurry by utilizing the hose section in the filling process, so that the size of a grouting valve can be adjusted as required, the dynamic adjustment of the filling speed can be realized, and the filling safety can be ensured.
The portable rapid plug special for the ultra-high water filling mining of the coal mine disclosed by the utility model has the advantages that the annular groove is formed in the hard pipe plugging section, the adjustable clamp corresponding to the annular groove is arranged on the radial outer side of the sleeve joint section, the sleeve joint section is sleeved behind the hard pipe plugging section, and the adjustable clamp is fixed at the annular groove, so that reliable and rapid connection can be realized, and the problems that the sleeve joint is not firm, the sleeve joint is easy to fall off and the filling is influenced can be solved.
According to the filling device disclosed by the utility model, the second quick pipe joint is detachably arranged at the outlet of the discharging pipe, the hard pipe is connected with the cuffs of the filling bag, the hose section is used for sensing the pressure of filling slurry in the filling process, the size of the grouting valve is further adjusted, the dynamic adjustment of the filling speed is realized, the problems of falling off of the lap joint, timely sensing and feedback adjustment of the filling pressure and the like are solved, part of hidden dangers in the filling process are further eliminated, meanwhile, the waste of filling materials is reduced, the labor intensity of workers is reduced, and the filling efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a portable quick plug special for ultra-high water filling mining of a coal mine;
FIG. 2 is a schematic cross-sectional view of a hose;
FIG. 3 is a schematic structural view of the filling device;
in the figure: 1. hard tube 2, hose 2.1, rubber inner liner 2.2, compressive layer 2.3, wearing layer 2.4, weaving layer 3, first coupling 4, second quick coupling 5, annular groove 6, adjustable clamp 7, slip casting supply equipment 8, discharging pipe 9, slip casting valve 10, pack 11, cuff cup joint section.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
the present utility model is further illustrated by the following examples, which are not intended to be limiting, but any modifications, equivalents, improvements, etc. within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.
Embodiment 1, as shown in fig. 1, a special portable quick plug of colliery superhigh water filling exploitation, including hard tube 1 and hose 2 that link together through first coupling 3, the cuff that fills the package has the cuff that overlaps and establishes on hard tube 1 and cup joints section 11, the hard tube 1 keeps away from the one end of hose 2 and has the hard tube grafting section that corresponds with the cuff grafting section, and hard tube grafting section department is provided with annular groove 5, and the radial outside of cuff grafting section is equipped with the adjustable clamp 6 that corresponds with annular groove 5, the cuff cup joints the section cover and establishes behind the hard tube grafting section to fix adjustable clamp 6 in annular groove 5 departments, the one end that hose 2 kept away from hard tube 1 is provided with second quick coupling 4.
The second quick pipe joint 4 is used for being connected with a discharging pipe 8 of grouting supply equipment 7, the sleeve is sleeved on the hard pipe plugging section, and the adjustable clamp 6 is fixed at the annular groove 5, so that reliable and quick connection can be realized, the filling slurry pressure can be perceived by a hose section in the filling process (the filling slurry pressure is consistent with the expansion pressure of the hose, visual inspection can be realized, manual pressing measurement can be realized, the hose and a force transducer can be arranged between two flat plates for accurate measurement), the size of a grouting valve 9 is regulated, the dynamic regulation of the filling speed is realized, and the filling safety is ensured.
Embodiment 2, as shown in fig. 1, a special portable quick plug of colliery superhigh water filling exploitation, including hard tube 1 and hose 2 that link together through first coupling 3, the cuff that fills the package has the cuff that overlaps and establishes on hard tube 1 and cup joints section 11, the one end that hose 2 was kept away from to hard tube 1 has the hard tube grafting section that corresponds with the cuff grafting section, and hard tube grafting section department is provided with annular groove 5, and the radial outside of cuff grafting section is equipped with the adjustable clamp 6 that corresponds with annular groove 5, the cuff cup joints the section cover and establishes behind the hard tube grafting section to fix adjustable clamp 6 in annular groove 5 departments, the one end that hose 2 kept away from hard tube 1 is provided with second quick coupling 4.
Further, at least one group of annular grooves 5 is arranged along the length direction of the hard pipe 1, and the number of the annular grooves 5 is matched with the number of the adjustable clamps 6.
Further, the length of the hard tube 1 is set to be 0.8m, the diameter is matched with the sleeve joint section, and the length of the hose 2 is set to be 1.5m.
Further, the hard tube 1 is made of hard plastic.
Further, the hose 2 is made of a fire hose, the traditional fire hose takes rubber as a lining, and the outer surface of the hose is wrapped with flax fabrics.
Further, the adjustable clamp 6 is a stainless steel hose clamp.
Further, the first pipe joint 3 is a high-pressure self-tightening flange for a pipeline.
Further, the second quick coupler 4 is a high-pressure self-tightening flange for a pipeline.
Embodiment 3 differs from the previous embodiments in that it further comprises a measuring device for measuring the inflation pressure of the hose, the device comprising two plates and a load cell arrangement interposed between the two plates.
Embodiment 4, as shown in fig. 2, for the embodiment above, the difference lies in, hose 2 includes rubber inner liner 2.1, compressive layer 2.2, wearing layer 2.3 and weaving layer 2.4 that connect gradually from inside to outside, compressive layer 2.2 includes carbon fiber layer, glass fiber layer and nylon fiber layer that connect gradually from inside to outside, plays the effect that improves hose 2 compressive strength through the cooperation of above-mentioned structure, has solved the fire hose in the current market and has not possessed compressive high strength's function, has prolonged hose 2's life, avoids hose 2 to influence the use because of breaking and frying open as far as possible.
Embodiment 5, as shown in fig. 3, a filling device, including above-mentioned colliery ultra-high water filling exploitation special portable quick plug, still include slip casting supply equipment 7, install the slip casting valve 9 that control was opened and close on the discharging pipe 8 of slip casting supply equipment 7, the exit at discharging pipe 8 is installed to second quick coupling 4 detachable, hard tube 1 is connected with the cuff of filling package 10, utilizes hose section perception to fill thick liquid pressure in the filling process, and then adjusts slip casting valve 9 size, realizes the dynamic adjustment of filling rate, has solved overlap joint and has come off, fill pressure in time perception feedback regulation scheduling problem, and then has eliminated some hidden danger that exist in the filling process, has reduced filling material waste simultaneously, has reduced worker intensity of labour, has promoted filling efficiency.
The portable rapid plug special for the ultra-high water filling mining of the coal mine can realize reliable and rapid connection, and can sense the pressure of filling slurry by utilizing the hose section in the filling process, so that the size of a grouting valve can be adjusted as required, the dynamic adjustment of the filling speed can be realized, and the filling safety can be ensured.
The portable rapid plug special for the ultra-high water filling mining of the coal mine disclosed by the utility model has the advantages that the annular groove is formed in the hard pipe plugging section, the adjustable clamp corresponding to the annular groove is arranged on the radial outer side of the sleeve joint section, the sleeve joint section is sleeved behind the hard pipe plugging section, and the adjustable clamp is fixed at the annular groove, so that reliable and rapid connection can be realized, and the problems that the sleeve joint is not firm, the sleeve joint is easy to fall off and the filling is influenced can be solved.
According to the filling device disclosed by the utility model, the second quick pipe joint is detachably arranged at the outlet of the discharging pipe, the hard pipe is connected with the cuffs of the filling bag, the hose section is used for sensing the pressure of filling slurry in the filling process, the size of the grouting valve is further adjusted, the dynamic adjustment of the filling speed is realized, the problems of falling off of the lap joint, timely sensing and feedback adjustment of the filling pressure and the like are solved, part of hidden dangers in the filling process are further eliminated, meanwhile, the waste of filling materials is reduced, the labor intensity of workers is reduced, and the filling efficiency is improved.
The foregoing has shown and described the basic principles, main features and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
The present utility model is not described in detail in the present application, and is well known to those skilled in the art.
Claims (7)
1. The utility model provides a special portable quick plug of colliery superhigh water filling exploitation which characterized in that: including hard tube and the hose that link together through first coupling, the cuff that fills the package has the cuff that the cover was established on the hard tube and cup joints the section, the hard tube is kept away from the one end of hose and is had the hard tube grafting section that corresponds with the cuff and cup joints the section, and hard tube grafting section department is provided with annular groove, and the cuff cup joints the radial outside of section and is equipped with the adjustable clamp that corresponds with annular groove, the cuff cup joints the section cover and establishes behind the hard tube grafting section to fix adjustable clamp in annular groove department, the hose is kept away from the one end of hard tube and is provided with the quick coupling of second.
2. The portable rapid plug special for ultra-high water filling mining of coal mines according to claim 1, wherein at least one group of annular grooves is arranged along the length direction of the hard pipe, and the number of the annular grooves is matched with the number of the adjustable clamps.
3. The portable rapid plug special for ultra-high water filling mining of coal mines according to claim 2, wherein the hard pipe is made of hard plastic.
4. A portable quick connector special for ultra-high water filling mining of coal mines according to claim 3, wherein the hose is made of fire hose.
5. The portable rapid plug special for ultra-high water filling mining of coal mines according to claim 1, wherein the hose comprises a rubber lining layer, a compression-resistant layer, a wear-resistant layer and a woven layer which are sequentially connected from inside to outside, and the compression-resistant layer comprises a carbon fiber layer, a glass fiber layer and a nylon fiber layer which are sequentially connected from inside to outside.
6. The portable quick connector special for ultra-high water filling mining of coal mines according to claim 5, wherein the first pipe joint is a high-pressure self-tightening flange for a pipeline.
7. A filling device comprising the portable rapid plug special for ultra-high water filling mining of coal mines according to any one of claims 1-6, and further comprising grouting supply equipment, wherein a grouting valve for controlling opening and closing is arranged on a discharging pipe of the grouting supply equipment, a second rapid pipe joint is detachably arranged at an outlet of the discharging pipe, and a hard pipe is connected with a cuff of a filling bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320985773.4U CN220185172U (en) | 2023-04-27 | 2023-04-27 | Portable quick plug and filling device special for ultra-high water filling mining of coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320985773.4U CN220185172U (en) | 2023-04-27 | 2023-04-27 | Portable quick plug and filling device special for ultra-high water filling mining of coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220185172U true CN220185172U (en) | 2023-12-15 |
Family
ID=89109044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320985773.4U Active CN220185172U (en) | 2023-04-27 | 2023-04-27 | Portable quick plug and filling device special for ultra-high water filling mining of coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220185172U (en) |
-
2023
- 2023-04-27 CN CN202320985773.4U patent/CN220185172U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108222938A (en) | A kind of large-inclination-angle coal bed goaf combination grouting filling recovery method | |
| CN108868875B (en) | Secondary grouting gas hole sealing device with pressure and construction method thereof | |
| CN214836257U (en) | Extraction drilling hole failure hole sealing processing apparatus | |
| CN109973748B (en) | Large-diameter full-pipe water drainage pipeline plugging system and plugging method | |
| CN102071961A (en) | Downward gas drainage drill hole and pressure testing drill hole sealing method | |
| CN114135249A (en) | Reusable and automatic pressure supplementing gas extraction drilling and sealing system and working method thereof | |
| CN106050300A (en) | Filling roof connecting method used for upward drift ultrahigh undersampling | |
| CN220185172U (en) | Portable quick plug and filling device special for ultra-high water filling mining of coal mine | |
| CN201221659Y (en) | Gas non-stop transporting first-aid repairing apparatus with gas of steel plastic composite pipeline | |
| CN206468897U (en) | A kind of deviation correcting device of push-bench | |
| CN108547617B (en) | A kind of static(al) broken rock flexible sleeve explosive charge method | |
| CN207195825U (en) | A kind of buried oil-gas pipeline protection device in Sbusidence Damage area | |
| CN205422591U (en) | Hole flushing device of colliery gas drainage drilling in pit | |
| CN204920899U (en) | Colliery outdrill hole slip casting fixed point hole sealing device | |
| CN103758483B (en) | A kind ofly process the secondary hole sealing method that layer-through drilling takes out rear broken region | |
| CN202832353U (en) | Straight-buckle fast connection cement head device with large inner diameter | |
| CN112197662B (en) | Device for preventing blast hole from freezing | |
| CN105484723B (en) | The continuous pipe device of built-in cable and its application | |
| CN114607312A (en) | Device and method for real-time multiple hole sealing | |
| CN103883348B (en) | The welding method of a kind of minery gas pumping well ground pipeline | |
| CN113187429A (en) | Mining hole sealing bag | |
| CN210484985U (en) | Large-diameter high-pressure air bag | |
| CN212563285U (en) | Novel remote liquid supply system | |
| CN207620846U (en) | Underground back taper cylinder type pressure hat type waterproof lock wall chamber | |
| CN207686762U (en) | The pneumatic pipeline of fully-mechanized mining working transports slurries device over long distances |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |