CN213953676U

CN213953676U - Coal mine underground hole-sinking drainage device and gas drainage device

Info

Publication number: CN213953676U
Application number: CN202022480982.2U
Authority: CN
Inventors: 黄中华; 张霖; 周杰; 王刚; 王�华; 徐伟; 樊伟; 胡林
Original assignee: Chongqing Juneng Construction Group Co ltd; CHONGQING QIANNIU CONSTRUCTION ENGINEERING CO LTD
Current assignee: Chongqing Juneng Construction Group Co ltd; CHONGQING QIANNIU CONSTRUCTION ENGINEERING CO LTD
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-08-13
Anticipated expiration: 2030-10-30

Abstract

The utility model discloses a coal mine underground down-hole drainage device, which comprises a gas drainage pipe, an air inlet pipe and a drain pipe, wherein the drain pipe is communicated on the side wall of the middle part of the gas drainage pipe; the air inlet pipe and the water outlet pipe are both provided with a first regulating valve, and one side of the gas drainage pipe, which is far away from the suction end part of the gas drainage pipe, is provided with a second regulating valve; compared with the prior art, the utility model, blow the pit downthehole ponding of bowing in the pit of colliery and take out work to the pit downthehole gas of colliery again after clean, can improve the efficiency of taking out of gas greatly, shorten operating time, improve the safety of being under construction during the coal uncovering, reduce the emergence of coal and gas outburst accident.

Description

Coal mine underground hole-sinking drainage device and gas drainage device

Technical Field

The utility model relates to a gas takes out and adopts technical field, concretely relates to colliery is hole drainage device and gas drainage device of bowing in pit.

Background

Gas drainage in coal mine drilling is one of the most common methods for preventing coal and gas outburst accidents, and the effect of gas control is the maximum safety guarantee during coal uncovering. In the gas drainage drilling hole, the hole of bowing is common one, also is the worst one of drainage effect, because the hole of bowing easily ponding to lead to unable effectual taking out of gas, gas has inefficiency and long-time problem in the process of taking out.

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model aims to provide a colliery is hole drainage device that bows in pit to solve prior art, because of the hole ponding of bowing easily, thereby lead to unable effectual taking out gas, gas has inefficiency and long-time problem in the in-process of taking out.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a coal mine underground down-hole drainage device comprises a gas drainage pipe, an air inlet pipe and a drainage pipe, wherein the drainage pipe is communicated with the side wall of the middle part of the gas drainage pipe;

all be provided with first governing valve on air-supply line and the drain pipe, and the gas drainage pipe is kept away from one side of its suction tip and is provided with the second governing valve.

Compared with the prior art, the utility model discloses following beneficial effect has:

before gas in a coal mine underground hole is pumped out, the pumping end part of a gas pumping and discharging pipe in the coal mine underground hole drainage device is embedded into the bottom of the coal mine underground hole, the hole opening of the coal mine underground hole is sealed, a second regulating valve is closed, and two first regulating valves are opened; then introducing high-pressure air into the bottom of the coal mine underground down hole by the air inlet pipe, so that the high-pressure air blows accumulated water in the coal mine underground down hole out of the water drainage pipe; the gas in the underground coal mine hole is pumped out after accumulated water in the underground coal mine hole is swept and cleaned, the gas pumping efficiency can be greatly improved, the working time is shortened, the construction safety during coal uncovering is improved, and the occurrence of coal and gas outburst accidents is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic view of a partial structure of the mounted embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments:

reference numerals in the drawings of the specification include: the device comprises a gas drainage pipe 1, an air inlet pipe 2, a drain pipe 3, a first adjusting valve 4, a second adjusting valve 5, a high-pressure soft air pipe 6, an observation hole 7, a connecting pipe section 21, an air inlet pipe section 22, an air outlet pipe section 23, a gas drainage sieve hole pipe 8, a hole sealing layer 9 and a depression hole 10.

As shown in fig. 1, an embodiment of the present invention provides a coal mine downhole down-hole drainage device, which includes a gas drainage pipe 1, an air inlet pipe 2 and a drain pipe 3, wherein the drain pipe 3 is communicated with a middle side wall of the gas drainage pipe 1, one end of the air inlet pipe 2 is arranged outside the gas drainage pipe 1, and the other end is attached to and extends to a suction end of the gas drainage pipe 1 along an axial direction of the gas drainage pipe 1; the air inlet pipe 2 and the water discharge pipe 3 are both provided with a first regulating valve 4, and one side of the gas drainage pipe 1 far away from the suction end part of the gas drainage pipe is provided with a second regulating valve 5.

Before gas in a coal mine underground hole 10 is pumped out, the pumping end part of a gas pumping and discharging pipe 1 in the coal mine underground hole drainage device is embedded into the bottom of the coal mine underground hole 10, the hole opening of the coal mine underground hole 10 is sealed, a second regulating valve 5 is closed, and two first regulating valves 4 are opened; then introducing high-pressure air into the bottom of the coal mine underground hole 10 through the air inlet pipe 2, so that the high-pressure air blows accumulated water in the coal mine underground hole 10 out of the water drainage pipe 3; the gas in the underground coal mine hole 10 is pumped out after accumulated water in the underground coal mine hole 10 is swept and cleaned, the gas pumping efficiency can be greatly improved, the working time is shortened, the construction safety during coal uncovering is improved, and the occurrence of coal and gas outburst accidents is reduced.

Wherein, the first regulating valve 4 and the second regulating valve 5 can both be high-pressure ball valves.

As shown in fig. 1, according to another embodiment of the present invention, the coal mine underground hole drainage device further comprises a high pressure flexible air pipe 6 detachably connected between the air inlet pipe 2 and the gas drainage pipe 1, the detachable mode can be a screw connection, and the high pressure flexible air pipe 6 is located between the second adjusting valve 5 and the suction end of the gas drainage pipe 1.

The design of the high-pressure soft air pipe 6 and the connection position of the high-pressure soft air pipe are favorable for shunting the high-pressure air led in by the air inlet pipe 2 through the high-pressure soft air pipe 6, so that part of the high-pressure air is led into the middle part of the gas drainage pipe 1 to enter the water drainage pipe 3, and the purposes of drainage and acceleration are achieved for accumulated water discharged from the water drainage pipe 3.

Wherein, the adopted high-pressure soft air pipe 6 can be a corrugated pipe, and the diameter of the corrugated pipe can be 50 mm; the corrugated pipe can be conveniently and reasonably adjusted according to the distance between the high-pressure soft air pipe 6 and the connecting point of the air inlet pipe 2 and the gas drainage pipe 1.

As shown in fig. 1, according to another embodiment of the present invention, the drainage device for a coal mine underground hole further comprises an observation hole 7 formed on a side wall of the gas drainage pipe 1, and a detection probe can be inserted from the observation hole 7 to observe the water accumulation in the coal mine underground hole 10; when the accumulated water in the coal mine underground hole 10 is discharged, the observation hole 7 can be sealed through the plug, the pressure in the gas discharge pipe is increased, and the efficiency of accumulated water discharge is high.

As shown in fig. 1, according to the utility model discloses an another embodiment, a colliery is hole drainage device that dives in pit still includes the configuration optimization to air-supply line 2, the air-supply line 2 of adoption includes the connecting pipe section 21 of arranging with gas drainage pipe 1 is perpendicular, the one end intercommunication of connecting pipe section 21 has the air inlet pipeline section 22 parallel with gas drainage pipe 1 and not contact, the other end intercommunication has the air-out pipeline section 23 of setting up along the laminating of gas drainage pipe 1 axial direction, air inlet pipeline section 22 and air-out pipeline section 23 staggered arrangement, first governing valve 4 on the air-supply line 2 sets up on air inlet pipeline section 22, high-pressure soft tuber pipe 6 can dismantle the intercommunication with air inlet pipeline section 22.

The air inlet pipe 2 is divided into three sections, namely a connecting pipe section 21, an air inlet pipe section 22 and an air outlet pipe section 23, so that the air inlet pipe 2 is conveniently and reasonably arranged, the first regulating valve 4 on the air inlet pipe 2 is conveniently regulated, and meanwhile, the suction end part of the gas drainage pipe 1 is buried in the coal mine underground down hole 10.

As shown in fig. 2, according to the utility model discloses an another embodiment, a colliery is gas drainage device in pit has contained a colliery in pit hole drainage device in any embodiment above, still includes gas drainage sieve pore pipe 8 and suction power component, and gas drainage sieve pore pipe 8 and gas drainage pipe 1's suction tip intercommunication, and gas drainage pipe 1's the other end can be dismantled with suction power component and be connected, and has seted up a plurality of sieve meshes on gas drainage sieve pore pipe 8's the outer wall.

After the coal mine underground gas drainage device is formed by matching the coal mine underground gas drainage hole drainage device with the gas drainage sieve tube 8, the suction power assembly and the like, the drainage of accumulated water in the coal mine underground hole 10 is completed, and the gas in the coal mine underground hole 10 can be pumped out by adjusting the opening and closing of the first adjusting valve 4 and the second adjusting valve 5; the structure is convenient and quick, and the structure obtains higher utilization rate.

After accumulated water is discharged, high-pressure air is stopped being led into the air inlet pipe 2, if the high-pressure air inlet pipe is connected with a high-pressure soft air pipe 6, the high-pressure soft air pipe can be detached, then the two first regulating valves 4 are closed, the second regulating valve 5 is opened, and gas in the coal mine underground depression hole 10 is pumped out through a channel formed by the gas drainage sieve hole pipe 8 and the gas drainage pipe 1 through the suction power assembly; the design of a plurality of sieve meshes is in order to increase the gas in the colliery hole 10 that dives in the pit and get into the passageway quantity in the gas drainage sieve pore pipe 8, makes the taking out of gas more efficient.

As shown in fig. 2, according to another embodiment of the present invention, the coal mine underground gas drainage device further includes a wind inlet pipe 2 extending to the end of the gas drainage pipe 1 and then extending to the end of the gas drainage sieve tube 8 away from the gas drainage pipe 1; the air pressure applied to the bottom of the underground coal mine hole 10 by the air inlet pipe 2 is larger, so that accumulated water in the underground coal mine hole 10 can be discharged more thoroughly.

According to the utility model discloses a further embodiment (not drawn in the drawing), a colliery is gas drainage device in pit still includes the configuration optimization to suction power component, and the suction power component of adoption includes the gas drainage hose of being connected with 1 screw thread of gas drainage pipe, and the gas drainage hose communicates in proper order that has gas-water separator, drainage person in charge and ground drainage pump.

The ground drainage pump provides power to lead the gas in the coal mine underground down hole 10 to be led into the gas-water separator through the gas drainage sieve hole pipe 8, the gas drainage pipe 1 and the gas drainage hose in sequence for water-gas separation, and then the gas is pumped out from the ground drainage pump through the drainage main pipe; the gas-water separator is of an existing structure and will not be described in detail here.

The coal mine underground gas drainage device is installed in the following sequence:

the method comprises the steps of burying a gas drainage sieve hole pipe 8 under the coal mine → connecting a gas drainage pipe 1 → connecting a grouting pipe and an exhaust pipe → sealing holes → connecting a coal mine underground gas drainage device → connecting a gas-water separator → connecting a drainage main pipe → connecting a ground surface drainage pump.

Namely: bury gas drainage sieve hole pipe 8 in the colliery hole 10 that bows in the pit, then link to each other gas drainage pipe 1 and gas drainage sieve hole pipe 8, can also connect grouting pipe and the blast pipe with external intercommunication in gas drainage pipe 1, add the Marilk who arranges in the gas drainage pipe 1 outside to the colliery hole 10 that bows in the pit and form a shutoff hole layer 9, communicate colliery hole drainage device that bows in the pit on gas drainage pipe 1 in proper order again, the deareator, drainage person in charge and ground drainage pump.

The coal mine underground gas drainage device can also comprise negative pressure measuring equipment, gas monitoring equipment and the like, and is used for detecting the underground pressure, the gas concentration and the like of the coal mine.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The coal mine underground down-hole drainage device is characterized by comprising a gas drainage pipe, an air inlet pipe and a drainage pipe, wherein the drainage pipe is communicated with the side wall of the middle part of the gas drainage pipe;

2. The coal mine underground down-hole drainage device according to claim 1, characterized in that: the air inlet pipe and the gas drainage pipe are detachably communicated with a high-pressure soft air pipe, and the high-pressure soft air pipe is positioned between the second regulating valve and the suction end part of the gas drainage pipe.

3. The coal mine underground down-hole drainage device according to claim 1, characterized in that: and the side wall of the gas drainage pipe is provided with an observation hole.

4. The coal mine underground down-hole drainage device according to claim 2, characterized in that: the air inlet pipe includes the connecting pipe section of arranging with the gas drainage pipe is perpendicular, and the one end intercommunication of connecting the pipeline section has the air inlet pipeline section parallel with the gas drainage pipe and not contact, and the other end intercommunication has the air-out pipeline section of following the laminating setting of gas drainage pipe axial direction, and air inlet pipeline section and air-out pipeline section staggered arrangement, the first governing valve setting on the air inlet pipe is on the air inlet pipeline section, and the intercommunication can be dismantled with the air inlet pipeline section to the high-pressure soft tuber pipe.

5. The coal mine underground down-hole drainage device according to claim 2, characterized in that: the high-pressure soft air pipe is a corrugated pipe.

6. A coal mine underground gas drainage device is characterized in that: the coal mine underground down-hole drainage device comprises the underground coal mine down-hole drainage device as claimed in any one of claims 1 to 5, and further comprises a gas drainage sieve hole pipe and a suction power assembly, wherein the gas drainage sieve hole pipe is communicated with the suction end part of the gas drainage pipe, the other end of the gas drainage pipe is detachably connected with the suction power assembly, and the outer wall of the gas drainage sieve hole pipe is provided with a plurality of sieve holes.

7. The coal mine underground gas drainage device according to claim 6, characterized in that: the air inlet pipe extends to the end part of the gas drainage pipe and then extends to the end part of the gas drainage sieve hole pipe far away from the gas drainage pipe.

8. The coal mine underground gas drainage device according to claim 6, characterized in that: the suction power assembly comprises a gas drainage hose connected with a gas drainage pipe thread, and the gas drainage hose is sequentially communicated with a gas-water separator, a drainage main pipe and a ground drainage pump.