CN215369778U - Colliery is hydraulic punching in pit and is prevented orifice and coal measure device - Google Patents
Colliery is hydraulic punching in pit and is prevented orifice and coal measure device Download PDFInfo
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- CN215369778U CN215369778U CN202121828212.0U CN202121828212U CN215369778U CN 215369778 U CN215369778 U CN 215369778U CN 202121828212 U CN202121828212 U CN 202121828212U CN 215369778 U CN215369778 U CN 215369778U
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Abstract
The utility model provides a colliery is hydraulic punching in pit prevents orifice and coal measure meter, including preventing spouting the orifice box and being located the coal measure meter box of preventing spouting orifice box below, it is direction from left to right to use the axial direction of drilling from the hole bottom to the drill way, the left side board of preventing spouting the orifice box is equipped with all around with the location connection structure of drilling drill way coal rock wall fixed connection all around, left perforation and right perforation have been seted up respectively on the left side board and the right side board of preventing spouting the orifice box, the left side board of preventing spouting the orifice box is equipped with the direction bearing structure who is used for the direction to support hydraulic punching drilling rod excircle in left perforation department, prevent spouting orifice box top and be equipped with the negative pressure pipe, prevent spouting orifice box bottom and be connected with coal measure box top through the blanking pipe of vertical setting. The hydraulic repairing device for the gas extraction drill hole is simple in structure, easy to manufacture, capable of preventing coal slag, gas and waste water generated in the hydraulic repairing process of the gas extraction drill hole from flowing into an operation space, and has the advantages of being simple in structure, convenient to operate, strong in safety and reliability, multiple in function and capable of being used repeatedly.
Description
Technical Field
The utility model belongs to the technical field of coal hydraulic punching, and particularly relates to a hydraulic punching anti-spraying hole and a coal quantity metering device in a coal mine.
Background
China has a large coal yield in the world and is a country with serious safety accidents in the production process of coal mines in the world. In the coal mining process, the gas accidents of a mine occupy a large proportion, and the gas explosion and the coal and gas outburst have serious consequences on the safety of coal production personnel. The hydraulic punching technology is an effective technical means for reducing the coal mine safety production problem, holes are drilled in a coal body, high-pressure water punching is further carried out in an extraction drill hole, coal slag in the drill hole can be punched out when the water injection amount is appropriate, the harm of hole blocking is prevented, when the hydraulic punching pressure is high, the permeability of the coal body can be increased, the problem that coal seam gas extraction is difficult is solved, the plasticity of the coal body can be enhanced through long-time punching, and the hole collapse possibility of the drill hole is reduced. However, the coal seam in China is influenced by a multi-period construction history, the coal body structure is complex, the coal seam is strong in heterogeneity, the flow direction of water in hydraulic punching of the coal seam is uncertain, the size and the shape of the hole after hydraulic punching are irregular, and the like, so that the problems that the radius of influence of gas extraction is irregular, measurement is not suitable, drilling is difficult to maintain, and the like are caused. Great danger is generated for the safety of underground personnel and the safe production of equipment of the coal mine. Therefore, the reasonable design of the underground hydraulic punching orifice prevention and coal quantity metering device for the coal mine has very important significance for solving the problems of gas extraction and gas blowout disasters.
At present, the hydraulic punching technology is widely applied to the field of coal body pressure relief and permeability increase. The method has the defects that the extraction concentration and the flow are large in the initial stage of gas extraction, but the extraction attenuation is fast; the phenomena of hole collapse and hole blocking are easy to occur in site construction, and the hole forming rate is low; by adopting the hydraulic coal leakage permeability increasing technology, the permeability increasing effect of the coal bed is very limited, the air permeability of the coal bed is still low, and coal and gas ejection and other hazards are easy to occur in drilling.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides the coal mine underground hydraulic punching orifice preventing and coal quantity metering device which is simple in structure, convenient to operate, safe, reliable and capable of being repeatedly used.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a colliery is hydraulic punching in pit prevents orifice and coal measure device, including preventing the orifice box and being located the coal measure batch meter of preventing orifice box below, it is direction from left to right to use the axial direction of drilling from the hole bottom to the drill way, prevent that the left side board of orifice box is equipped with all around with the location connection structure of drilling drill way coal rock wall fixed connection all around, left perforation and right perforation have been seted up on the left side board and the right side board of preventing the orifice box respectively, left perforation, the central line coincidence of right perforation and drilling, the left side board of preventing the orifice box is equipped with the direction bearing structure who is used for the guide support hydraulic punching drilling rod excircle in left perforation department, prevent that orifice box top is equipped with the negative pressure pipe, prevent that orifice box bottom is connected with coal measure batch meter top through the blanking pipe of vertical setting.
The right side plate of the blowout prevention hole box is provided with a rubber sealing sleeve sleeved on the excircle of the hydraulic punching drill rod, the left end face of the rubber sealing sleeve is integrally provided with an annular connecting disc, and the left side face of the annular connecting disc is attached to the right side face of the right side plate of the blowout prevention hole box and connected into a whole through a screw.
The guide supporting structure comprises a supporting ring sleeved outside the hydraulic punching drill rod, the outer circle of the supporting ring is fixedly connected with the edge of the left through hole through three spoke plates, the three spoke plates are uniformly arranged along the circumferential direction of the left through hole, and the length direction of each spoke plate is arranged along the radial direction of the left through hole.
And a filtering screen is horizontally arranged above the left through hole in the blowout prevention hole box.
The positioning connection structure comprises a square annular connection plate, the connection plate and a left side plate of the blowout prevention hole box are of an integral structure, and the connection plate is fixedly connected with the coal rock wall through a plurality of expansion bolts.
The lower part of the blowout prevention hole box is of a rectangular pyramid cylinder structure with a thick upper part and a thin lower part.
The blanking pipe comprises an upper section and a lower section, an upper port of the upper section is connected to the lowest end of the rectangular pyramid cylinder structure at the lower part of the blowout prevention hole box, the lower end of the upper section is connected with the upper end of the lower section through a flange bolt, and a lower port of the lower section is connected to the top of the coal quantity metering box.
The coal volume batch meter is made for transparent material, and the vertical measuring tape that is equipped with in the coal volume batch meter outside, coal volume batch meter bottom is equipped with the landing leg, and the slope setting of high right side is gone up to coal volume batch meter bottom, and the lower of coal volume batch meter right side lower part is equipped with the drainage sediment pipe, is equipped with the drainage sediment valve on the drainage sediment pipe.
When the hydraulic punching drill rod is used, firstly, a square annular connecting plate of a left side plate integrated structure of the blowout prevention hole box is fixed on a coal rock wall at a drilling hole through an expansion bolt, a rubber sealing strip is arranged between the right side surface of the coal rock wall and the left side surface of the annular connecting plate, meanwhile, a left through hole is coincided with a drilling center line, then, a hydraulic punching drill rod penetrates through the right through hole and a supporting ring, the left end of the hydraulic punching drill rod is conveyed to a drilling position of a preset place, a rubber sealing sleeve is sleeved on the outer part of the hydraulic punching drill rod, an inner circle of the rubber sealing sleeve is tightly matched with an outer circle of the hydraulic punching drill rod, and the annular connecting plate integrated on the left side of the rubber sealing sleeve is fixedly connected with a right side plate of the blowout prevention hole box through a screw; and then connecting the negative pressure pipe with a gas extraction pipe. Next, adopting hydraulic punching working measures, adjusting the pressure and water yield of hydraulic punching, injecting water into the drill hole through a hydraulic punching drill rod by high-pressure water to perform hydraulic punching operation, flushing gas, coal slag and waste water generated in the hydraulic punching operation process to the right through a support ring into a blowout prevention hole box along the drill hole, discharging the gas through a negative pressure pipe, feeding the coal slag and the waste water into a coal quantity metering box through a blanking pipe, opening a water and slag discharging valve in time when the coal slag of the coal quantity metering box reaches a certain volume, discharging the waste water through a water and slag discharging pipe at the lower part of the right side of the coal quantity metering box, treating the waste water for secondary utilization, and reading the volume of the coal quantity by observing the metering ruler to roughly judge the size of the punched hole, and adjusting and stopping the hydraulic punching operation in time, and determining whether to continue hydraulic punching according to the coal quantity result.
The utility model has the beneficial effects that: the blowout-preventing hole box is fixed on the coal-rock wall by adopting an expansion bolt, and a rubber sealing strip is arranged between the coal-rock wall and the annular connecting plate to realize effective sealing of the blowout-preventing hole box and the coal wall, so that coal slag, gas and wastewater can be prevented from gushing out of the blowout-preventing hole box in the hydraulic repairing process; a filter screen is arranged on the upper side in the blowout prevention hole box to separate coal cinder, water and gas, and the coal cinder generated by hydraulic punching operation can be prevented from entering a negative pressure pipe to block an air passage; the rubber sealing sleeve can realize effective sealing between the hydraulic punching drill rod and the right punching hole, and coal slag, gas and waste water in the blowout-preventing hole box are prevented from gushing out of the blowout-preventing hole box; the lower part of the blowout prevention hole box is made into a rectangular pyramid cylinder structure (namely the vertical section is in a V shape) with a thick upper part and a thin lower part, so that the coal slag and the waste water can be conveniently discharged; the support ring of the guide support structure plays a role in supporting and positioning the hydraulic punching drill rod, the hydraulic punching drill rod is ensured to be arranged along the central line of a drilled hole, and the spoke plate plays a role in connecting the support ring; the bottom of the coal metering box is obliquely arranged in a left-high and right-low manner, so that wastewater and coal cinder can be conveniently discharged through the drainage gate pipe; the blanking pipe comprises an upper section and a lower section, the lower end of the upper section is connected with the upper end of the lower section through a flange bolt, and the structure is convenient to disassemble through a mounting box; the measuring ruler can monitor the cinder quantity of the hydraulic punching and can measure the water quantity of the hydraulic punching; the pressure control of the negative pressure pipe ensures that a part of gas energy is offset when the gas is sprayed out, so that the coal and gas spraying is solved from the energy angle.
In conclusion, the hydraulic restoration device has the advantages of simple structure, easiness in manufacturing, capability of preventing coal slag, gas and wastewater generated in the hydraulic restoration process of the gas extraction drill hole from flowing into an operation space, simple structure, convenience in operation, high safety and reliability, multiple functions (the hydraulic restoration prevents the jet hole from being separated from coal, gas and water) and capability of being repeatedly used.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of the left side plate of the blowout preventer stack of FIG. 1;
FIG. 3 is a right side view of the right side plate of the blowout preventer stack of FIG. 1.
Detailed Description
As shown in fig. 1, fig. 2 and fig. 3, the coal mine underground hydraulic punching anti-spraying hole and coal quantity metering device of the utility model comprises an anti-spraying hole box 1 and a coal quantity metering box 2 positioned below the anti-spraying hole box 1, the axial direction from the bottom of a hole to an orifice of a hole of a drilling hole 3 is taken as the direction from left to right, a positioning connection structure fixedly connected with a coal rock wall 5 around the orifice of the drilling hole 3 is arranged around a left side plate 4 of a blowout prevention hole box 1, a left perforation 7 and a right perforation 8 are respectively arranged on the left side plate 4 and a right side plate 6 of the blowout prevention hole box 1, the central lines of the left perforation 7 and the right perforation 8 and the drilling hole 3 are overlapped, a guide support structure 10 used for guiding and supporting the excircle of a hydraulic punching drill rod 9 is arranged at the left perforation 7 of the left side plate 4 of the blowout prevention hole box 1, a negative pressure pipe 11 is arranged at the top of the blowout prevention hole box 1, and the bottom of the blowout prevention hole box 1 is connected with the top of a coal volume metering box 2 through a vertically arranged blanking pipe.
The right side plate 6 of the blowout prevention hole box 1 is provided with a rubber sealing sleeve 12 sleeved on the excircle of the hydraulic punching drill rod 9, the left end face of the rubber sealing sleeve 12 is integrally provided with an annular connecting disc 13, and the left side face of the annular connecting disc 13 is attached to the right side face of the right side plate 6 of the blowout prevention hole box 1 and connected into a whole through a screw 14.
The guide supporting structure 10 comprises a supporting ring 15 sleeved outside the hydraulic punching drill rod 9, the outer circle of the supporting ring 15 is fixedly connected with the edge of the left through hole 7 through three spoke plates 16, the three spoke plates 16 are uniformly arranged along the circumferential direction of the left through hole 7, and the length direction of each spoke plate 16 is arranged along the radial direction of the left through hole 7.
A filter screen 17 is horizontally provided above the left perforation 7 inside the blowout preventer casing 1.
The positioning connection structure comprises a square annular connection plate 18, the connection plate 18 and the left side plate 4 of the blowout prevention hole box 1 are of an integral structure, and the connection plate 18 is fixedly connected with the coal rock wall 5 through a plurality of expansion bolts 19.
The lower part of the blowout-preventing hole box 1 is provided with a rectangular pyramid cylinder structure 20 with a thick upper part and a thin lower part.
The blanking pipe comprises an upper section and a lower section, an upper port of the upper section is connected to the lowest end of a rectangular pyramid cylinder structure 20 at the lower part of the blowout prevention hole box 1, the lower end of the upper section is connected with the upper end of the lower section through a flange bolt, and a lower port of the lower section is connected to the top of the coal metering box 2.
Coal volume metering box 2 is made for transparent material, and the vertical measuring tape 21 that is equipped with in 2 outsides of coal volume metering box, 2 bottoms of coal volume metering box are equipped with landing leg 22, and 2 bottoms of coal volume metering box slope settings of high right side, the lower extreme of 2 right sides lower parts of coal volume metering box are equipped with drainage sediment pipe 23, are equipped with drainage sediment valve 24 on the drainage sediment pipe 23.
When the hydraulic anti-blowout hole box is used, firstly, a square annular connecting plate 18 of a left side plate 4 integrated structure of the anti-blowout hole box 1 is fixed on a coal rock wall 5 at a hole opening of a drilling hole 3 through an expansion bolt 19, a rubber sealing strip is arranged between the right side surface of the coal rock wall 5 and the left side surface of the annular connecting plate 18, meanwhile, a left through hole 7 is coincided with the central line of the drilling hole 3, then a hydraulic punching drill rod 9 penetrates through a right through hole 8 and a supporting ring 15, the left end of the hydraulic punching drill rod 9 is sent to the drilling hole 3 position of a preset place, a rubber sealing sleeve 12 is sleeved on the outer part of the hydraulic punching drill rod 9, the inner circle of the rubber sealing sleeve 12 is tightly matched with the outer circle of the hydraulic punching drill rod 9, and an annular connecting disc 13 integrated with the left side of the rubber sealing sleeve 12 is fixedly connected with a right side plate 6 of the anti-blowout hole box 1 through a screw 14; then the negative pressure pipe 11 is connected to a gas extraction pipe. Next, adopting hydraulic punching working measures, adjusting the pressure and water yield of hydraulic punching, injecting water into the drill hole 3 by high-pressure water through a hydraulic punching drill rod 9 to perform hydraulic punching operation, flushing gas, coal slag and waste water generated in the hydraulic punching operation process to the right through a support ring 15 into a blowout prevention hole box 1 along the drill hole 3, discharging the gas through a negative pressure pipe 11, entering the coal slag and the waste water into a coal metering box 2 through a blanking pipe, wherein the coal metering box 2 is made of transparent materials, so that a worker can see the coal amount in the coal metering box 2 in real time and read the coal amount through a metering ruler 21 on the outer side of the coal metering box 2, opening a discharge and discharge slag valve 24 in time when the coal slag in the coal metering box 2 reaches a certain volume, discharging the waste water through a discharge slag pipe 23 on the lower part of the right side of the coal metering box 2, and treating the waste water for secondary utilization, the size of the punched hole is roughly judged by observing the volume of the coal quantity read by the measuring ruler 21, the hydraulic punching operation is timely adjusted and stopped, and whether hydraulic punching is continued or not is determined according to the coal quantity result.
The utility model has the beneficial effects that: the blowout-preventing hole box 1 is fixed on the coal rock wall 5 by adopting an expansion bolt 19, and a rubber sealing strip is arranged between the coal rock wall 5 and the annular connecting plate 18 to realize effective sealing of the blowout-preventing hole box 1 and the coal wall, so that coal slag, gas and wastewater can be prevented from gushing out of the blowout-preventing hole box 1 in the hydraulic repair process; a filter screen 17 is arranged on the upper side in the blowout prevention hole box 1 to separate coal cinder, water and gas, and the coal cinder generated by hydraulic punching operation can be prevented from entering the negative pressure pipe 11 to block the gas circuit; the rubber sealing sleeve 12 can realize effective sealing between the hydraulic punching drill rod 9 and the right perforation 8, and prevent coal slag, gas and wastewater in the blowout-preventing hole box 1 from rushing out of the blowout-preventing hole box 1; the lower part of the blowout prevention hole box 1 is manufactured into a rectangular pyramid cylinder structure 20 with a thick upper part and a thin lower part (namely, the vertical section is in a V shape), so that the coal slag and the waste water can be conveniently discharged; the support ring 15 of the guide support structure 10 plays a role in supporting and positioning the hydraulic punching drill rod 9, so that the hydraulic punching drill rod 9 is ensured to be arranged along the central line of the drilled hole 3, and the spoke plate 16 plays a role in connecting the support ring 15; the bottom of the coal quantity metering box 2 is obliquely arranged in a left-high and right-low manner, so that waste water and coal slag can be conveniently discharged through a drainage gate pipe; the blanking pipe comprises an upper section and a lower section, the lower end of the upper section is connected with the upper end of the lower section through a flange bolt, and the structure is convenient to disassemble through a mounting box; the measuring ruler 21 can monitor the cinder quantity of the hydraulic punching and can measure the water quantity of the hydraulic punching; the pressure control of the negative pressure pipe 11 ensures that a part of gas energy is offset when the gas is sprayed, thereby solving the problem of coal and gas spraying from the energy perspective.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a colliery is hydraulic punching in pit and is prevented orifice and coal measure metering device which characterized in that: including preventing spouting the hole case and being located the coal measure box who prevents spouting hole case below, be the direction from left to right with the axial direction of drilling from the hole bottom to drill way, prevent spouting the left side board of hole case all around be equipped with drill way coal rock wall fixed connection's around location connection structure, prevent having seted up left perforation and right perforation on the left side board of spouting the hole case and the right side board respectively, the left side is perforated, the center line coincidence of right perforation and drilling, the left side board of preventing spouting the hole case is equipped with the direction bearing structure who is used for the guide support water conservancy to punch a hole drilling rod excircle in left perforation department, prevent spouting the hole case top and be equipped with the negative pressure pipe, prevent spouting the hole case bottom and be connected with coal measure box top through the blanking pipe of vertical setting.
2. The device for preventing the jet hole and the coal amount from being punched by the hydraulic punching in the coal mine according to claim 1, is characterized in that: the right side plate of the blowout prevention hole box is provided with a rubber sealing sleeve sleeved on the excircle of the hydraulic punching drill rod, the left end face of the rubber sealing sleeve is integrally provided with an annular connecting disc, and the left side face of the annular connecting disc is attached to the right side face of the right side plate of the blowout prevention hole box and connected into a whole through a screw.
3. The device for preventing the jet hole and the coal amount from being punched by the underground hydraulic force of the coal mine according to the claim 1 or 2, which is characterized in that: the guide supporting structure comprises a supporting ring sleeved outside the hydraulic punching drill rod, the outer circle of the supporting ring is fixedly connected with the edge of the left through hole through three spoke plates, the three spoke plates are uniformly arranged along the circumferential direction of the left through hole, and the length direction of each spoke plate is arranged along the radial direction of the left through hole.
4. The device for preventing the jet hole and the coal amount from being punched by the underground hydraulic force of the coal mine according to the claim 1 or 2, which is characterized in that: and a filtering screen is horizontally arranged above the left through hole in the blowout prevention hole box.
5. The device for preventing the jet hole and the coal amount from being punched by the underground hydraulic force of the coal mine according to the claim 1 or 2, which is characterized in that: the positioning connection structure comprises a square annular connection plate, the connection plate and a left side plate of the blowout prevention hole box are of an integral structure, and the connection plate is fixedly connected with the coal rock wall through a plurality of expansion bolts.
6. The device for preventing the jet hole and the coal amount from being punched by the underground hydraulic force of the coal mine according to the claim 1 or 2, which is characterized in that: the lower part of the blowout prevention hole box is of a rectangular pyramid cylinder structure with a thick upper part and a thin lower part.
7. The device for preventing the jet hole and the coal amount from being punched by the underground hydraulic punching of the coal mine according to claim 6, is characterized in that: the blanking pipe comprises an upper section and a lower section, an upper port of the upper section is connected to the lowest end of the rectangular pyramid cylinder structure at the lower part of the blowout prevention hole box, the lower end of the upper section is connected with the upper end of the lower section through a flange bolt, and a lower port of the lower section is connected to the top of the coal quantity metering box.
8. The device for preventing the jet hole and the coal amount from being punched by the underground hydraulic force of the coal mine according to the claim 1 or 2, which is characterized in that: the coal volume batch meter is made for transparent material, and the vertical measuring tape that is equipped with in the coal volume batch meter outside, coal volume batch meter bottom is equipped with the landing leg, and the slope setting of high right side is gone up to coal volume batch meter bottom, and the lower of coal volume batch meter right side lower part is equipped with the drainage sediment pipe, is equipped with the drainage sediment valve on the drainage sediment pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121828212.0U CN215369778U (en) | 2021-08-06 | 2021-08-06 | Colliery is hydraulic punching in pit and is prevented orifice and coal measure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121828212.0U CN215369778U (en) | 2021-08-06 | 2021-08-06 | Colliery is hydraulic punching in pit and is prevented orifice and coal measure device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215369778U true CN215369778U (en) | 2021-12-31 |
Family
ID=79615904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121828212.0U Expired - Fee Related CN215369778U (en) | 2021-08-06 | 2021-08-06 | Colliery is hydraulic punching in pit and is prevented orifice and coal measure device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215369778U (en) |
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2021
- 2021-08-06 CN CN202121828212.0U patent/CN215369778U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211231 |