CN206267852U - A kind of Surrounding Rock Strength control device before stone door punching coal - Google Patents
A kind of Surrounding Rock Strength control device before stone door punching coal Download PDFInfo
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- CN206267852U CN206267852U CN201621234960.5U CN201621234960U CN206267852U CN 206267852 U CN206267852 U CN 206267852U CN 201621234960 U CN201621234960 U CN 201621234960U CN 206267852 U CN206267852 U CN 206267852U
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Abstract
The utility model is related to the Surrounding Rock Strength control device before a kind of stone door punching coal, the Surrounding Rock Strength strengthened in front of driving face is freezed by water filling, improve the country rock and resist prominent ability, it is ensured that during excavation operation, the prominent accident that country rock is rushed to open and causes will not occur；By noting high-temperature vapor by the ice-out Cheng Shui in country rock, Surrounding Rock Strength is reduced, it can be ensured that final explosion can disposably open the country rock in front of tunnel, be prevented effectively from and induce prominent accident because of multiple bursting work.Therefore, the device can change the Surrounding Rock Strength in front of tunnel according to stone door punching coal operation needs, solve stone door punching coal operating risk technical barrier higher for a long time.
Description
Technical field
The utility model is related to a kind of rock strength control device, can be according to stone door punching coal needs especially with regard to one kind
The Surrounding Rock Strength control device before the stone door punching coal of reinforcing and Weakening treatment is carried out to its Surrounding Rock Strength.
Background technology
It is well known that for projecting coal bed exploitation, stone door punching coal is both a breakneck technique, meanwhile,
It is an essential technique., during stone door punching coal, there is higher ranked coal and dashed forward with gas in many coal mining enterprises
Accidents happened, causes casualties and property loss.The reason for stone door punching coal occurs coal and gas prominent accident has various, country rock
It is exactly the reason for one of them is extremely important that intensity is out of hand.
When Surrounding Rock Strength is too low（Such as country rock is soft, broken and there is tomography）When, in high stress and high methane pressure
Coal body under state, can wash country rock open, and coal and gas prominent occurs；The Henan Daping Coalmine of on October 20th, 2004 is will exposed coal
Before, there is coal and gas prominent accident and cause gas explosion, cause 148 people dead, reason is that there is tomography in country rock,
Weaken the intensity of rock mass.
When Surrounding Rock Strength is too high, such as granite, in the specified explosion exposed coal of explosive charge, it is difficult to disposably crossdrift is taken off
Open, it is necessary to repeatedly carry out exposed coal operation, also easily induction protrudes accident for this；On May 30th, 2009, Chongqing City was with China colliery
In exposed coal operation process, there is coal and gas prominent accident, cause 30 people dead, reason is that onepull fails will be whole
Individual crossdrift is opened, in the 4th separate explosion exposed coal operation, induction of coal and gas prominent.
At present, about the technique and method of the Surrounding Rock Strength control aspect before stone door punching coal, mainly breaking surrounding rock is entered
Row grouting and reinforcing and it is inserted into steel pipe in country rock and improves its bulk strength.Above-mentioned measure is primary concern is that enhancing country rock resists prominent
The ability for going out, and do not consider before explosion exposed coal operation, how to reduce the Surrounding Rock Strength, to avoid crossdrift can not be once
The phenomenon that property is opened.
Surrounding Rock Strength can be strengthened in stone drifting, the protrusion-dispelling ability of country rock is effectively improved, can be made in explosion exposed coal again
Weakening treatment is carried out to the country rock before industry, it is ensured that the device that crossdrift can disposably be lifted, in disclosed documents and materials, still
Do not see.
Therefore, for the safety work of stone door punching coal, explore a kind of device that can control Surrounding Rock Strength and just seem outstanding
For urgent.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides the Surrounding Rock Strength control dress before a kind of stone door punching coal
Put.
The utility model solves the technical scheme that is used of above-mentioned technical problem：A kind of Surrounding Rock Strength before stone door punching coal
Control device, including flood pattern, refrigeration system and ice melting system；The flood pattern includes water-supply-pipe, water injecting pump and water filling
Tube bank, the water inlet end of water injecting pump connects water-supply-pipe by coupling sebific duct, and water side connects each water filling and restrains by high-pressure rubber pipe；Note
The water inlet end of water pump and water side are respectively provided with valve；The refrigeration system includes freezing liquid cabinet, topping-up pump and fluid injection tube bank, note
The liquid feeding end of liquid pump connects freezing liquid cabinet by coupling sebific duct, and outlet end connects fluid injection and restrains by high-pressure rubber pipe, the note
The water side of festoon and the outlet end of fluid injection tube bank, pass through with the drilling being arranged on the country rock of driving face front respectively
Hole packer is connected；The ice melting system includes water-supply-pipe, heater, gas compressor and fluid injection tube bank, the one of the heater
End connection water-supply-pipe, the other end connects gas compressor by coupling sebific duct, and the outlet side of gas compressor passes through high-pressure rubber pipe
Connection gas injection tube bank, the two ends of gas compressor are respectively provided with valve, the gas injection tube bank and remote shock blasting exposed coal position
The drilling at place is connected by hole packer.
Each water filling tube bank, fluid injection tube bank and gas injection tube bank are made up of many sebific ducts respectively, one end collection per gum duct
It is combined to form a total port, is threadedly coupled with high-pressure rubber pipe, the other end is respectively provided with connector and connects with hole packer screw thread
Connect.
Every sebific duct in a branch of water filling tube bank is connected with the drilling of a line with being located at；It is every in a branch of fluid injection tube bank
Root sebific duct be spaced one positioned at be connected with the drilling of a line, and between two sebific ducts and drill；In water filling tube bank and fluid injection tube bank,
Lower interval setting, is laid with the frequency that a line fluid injection tube bank is restrained in two row water fillings.
The drilling of one, interval is installed between every two sebific ducts in a branch of gas injection tube bank, between two beam gas injections tube bank between
Every a line.
A kind of Surrounding Rock Strength control method before stone door punching coal, concretely comprises the following steps：
Step 1）At country rock in front of driving face, drawing-off gas is waited to finish, using part drawing-off gas drilling structure
Flood pattern is built, specific method is as follows：By coupling sebific duct, water-supply-pipe is connected with water injecting pump, and pacified on connection sebific duct
If valve；Each water filling tube bank is connected with the hole packer in drilling respectively；Using high-pressure rubber pipe respectively by each water filling tube bank with
Water injecting pump is connected, and valve is installed on high-pressure rubber pipe；
Step 2）With the same working face of flood pattern, recycle part drawing-off gas drilling build refrigeration system, specifically
Method is as follows：By coupling sebific duct, freezing liquid cabinet and topping-up pump are connected, and valve is installed on connection sebific duct；Will be each
Fluid injection tube bank is connected with the hole packer in drilling respectively；Each fluid injection tube bank is connected with topping-up pump respectively using high-pressure rubber pipe
Connect, and valve is installed on high-pressure rubber pipe；
Step 3）First start flood pattern, restart refrigeration system, realize that rock mass freezes and freeze, comprise the following steps that：Beat
The valve of flood pattern is opened, water injecting pump is opened to water filling in drilling；After valve and water injecting pump is closed after rock mass moistening, it is then turned on
Freezing liquid cabinet and its valve, priming pump in drilling to injecting freezing liquid, until water body icing rock mass reinforcing, so as to be formed
One safer barrier；Then flood pattern and refrigeration system are removed, implements explosion, tunneled forward；
Step 4）When working face is tunneled to the exposed coal position of remote shock blasting, ice melting system is installed, specific method is such as
Under：Water-supply-pipe is connected with heater；Heater and gas compressor are connected by coupling sebific duct, and in connection glue
Valve is installed on pipe；Each gas injection tube bank is connected with the hole packer in drilling respectively；Using high-pressure rubber pipe respectively by each gas injection
Tube bank is connected with gas compressor, and valve is installed on high-pressure rubber pipe；
Step 5）Blast hole is set in the exposed coal position of remote shock blasting, and installs explosive, complete the standard before explosion
Standby work；Start heater and produce high-temperature vapor, open the valve on connection sebific duct, high-temperature gas is entered by coupling sebific duct
Gas compressor, after compression, opens the valve on high-pressure rubber pipe, is passed to high-pressure rubber pipe and each gas injection tube bank enters brill
Hole, under high-temperature vapor effect, the ice-out Cheng Shui in the rock mass of driving face front, and it is full of the rock mass of water, intensity will
Less than virgin rock；Now implement remote explosion, it is ensured that disposably open rock stratum.
The beneficial effects of the utility model are：A kind of Surrounding Rock Strength control device before stone door punching coal, is freezed by water filling
Strengthen the Surrounding Rock Strength in front of driving face, improve the country rock and resist prominent ability, it is ensured that during excavation operation, will not
There is the prominent accident that country rock is rushed to open and causes；By noting high-temperature vapor by the ice-out Cheng Shui in country rock, country rock is reduced
Intensity, it can be ensured that final explosion can disposably open the country rock in front of tunnel, be prevented effectively from and lured because of multiple bursting work
Lead prominent accident.Therefore, the method can change the Surrounding Rock Strength in front of tunnel according to stone door punching coal operation needs, solve length
Stone door punching coal operating risk technical barrier higher since phase.
Brief description of the drawings
Fig. 1 is example structure schematic diagram of the present utility model.
Fig. 2 is the A-A sectional views of Fig. 1.
Fig. 3 is the B-B sectional views of Fig. 1.
Marked in figure as follows：1. water-supply-pipe, 2. couples sebific duct, 3. valve, 4. water injecting pump, 5. valve, 6. high-pressure rubber pipe, 7.
Water filling is restrained, 8. freezing liquid cabinet, 9. couples sebific duct, 10. valve, 11. topping-up pumps, 12. valves, 13. high-pressure rubber pipes, 14. notes
Liquid pipe beam, 15. water-supply-pipes, 16. heaters, 17. connection sebific ducts, 18. valves, 19. gas compressors, 20. valves, 21. high pressures
Sebific duct, 22. gas injections tube bank, 23. drillings, 24. driving faces front country rock, 25. remote shock blasting exposed coal positions.
Specific embodiment
With reference to accompanying drawing 1,2,3 as can be seen that a kind of stone door punching coal before Surrounding Rock Strength control device, including flood pattern,
Refrigeration system and ice melting system；The flood pattern includes water-supply-pipe 1, water injecting pump 4 and water filling tube bank 7, the water inlet end of water injecting pump 4
Water-supply-pipe 1 is connected by coupling sebific duct 2, water side connects each water filling and restrains 7 by high-pressure rubber pipe 6；The water inlet end of water injecting pump 4 and
Water side is respectively provided with valve 3,5；The refrigeration system includes freezing liquid cabinet 8, topping-up pump 11 and fluid injection tube bank 14, topping-up pump 11
Liquid feeding end connect freezing liquid cabinet 8 by coupling sebific duct 9, outlet end connects fluid injection and restrains 14, the note by high-pressure rubber pipe 6
The water side of festoon 7 and the outlet end of fluid injection tube bank 14, respectively with the brill being arranged on the country rock 24 of driving face front
Hole 23 is connected by hole packer；The ice melting system includes water-supply-pipe 15, heater 16, gas compressor 19 and fluid injection tube bank
14, one end connection water-supply-pipe 15 of the heater 16, the other end connects gas compressor 19, gas pressure by coupling sebific duct 17
The outlet side of contracting machine 19 connects gas injection and restrains 22 by high-pressure rubber pipe 21, and the two ends of gas compressor 19 are respectively provided with valve, described
Gas injection tube bank 22 is connected with the drilling 23 at remote shock blasting exposed coal position 25 by hole packer.
Each water filling tube bank 7, fluid injection tube bank 14 and gas injection tube bank 22 are made up of many sebific ducts respectively, and per gum duct one
End gathers to form a total port, is threadedly coupled with high-pressure rubber pipe 6,13,21, and the other end is respectively provided with connector with envelope
Hole device threaded connection.
As shown in Fig. 2 at original position A-A in front of driving face in country rock 24, i.e. Fig. 1, a branch of water filling
Tube bank 7 in every sebific duct be located at be connected with the drilling 23 of a line；A branch of fluid injection is restrained every sebific duct in 14 and is located at same
The drilling 23 of a line is connected, and a drilling 23 is spaced between two sebific ducts；14 upper and lower intervals are restrained in water filling tube bank 7 and fluid injection
Set, the frequency that can restrain 7 a line fluid injections tube bank 14 with two row water fillings is laid.
The water-supply-pipe 1 is connected by coupling sebific duct 2 with water injecting pump 4, connects connecting mode for thread connection；Valve 3 is installed
On connection sebific duct 2；High-pressure rubber pipe 6 is restrained 7 and is connected by screw thread with water injecting pump 4 and each beam water filling respectively；Valve 5 is installed
On high-pressure rubber pipe 6, it is connected with the hole packer in respective bore 23 respectively again per a branch of water injection pipe beam 7, connecting mode is spiral shell
Line couples；Constitute flood pattern.
The freezing liquid cabinet 8 and topping-up pump 11 are connected by coupling sebific duct 9, and connecting mode is thread connection；Valve
10 are installed on connection sebific duct 9；High-pressure rubber pipe 13 is connected with each fluid injection tube bank 14 and topping-up pump 11 respectively, and connecting mode is spiral shell
Line couples；Valve 12 is installed on high-pressure rubber pipe 13, per a branch of liquid injection pipe beam 14 again respectively with respective bore 23 in hole packer
It is connected, connecting mode is thread connection；Constitute refrigeration system.
First start flood pattern, after after rock mass moistening, restart refrigeration system, until water body freezes, rock mass reinforcing；Remove
Flood pattern and refrigeration system, implement explosion, tunnel forward.
As shown in figure 3, apart from the exposed coal position 25 of shock blasting, i.e. at B-B in Fig. 3, gas injection is restrained and is located at should
Hole packer connection in drilling 23 on place's country rock, one, interval drilling 23 between every two sebific ducts in a branch of gas injection tube bank 22
Install, a line is spaced between two beam gas injections tube bank 22.Water-supply-pipe 15 is connected with heater 16, and connecting mode is thread connection；
Heater 16 and gas compressor 19 are connected by coupling sebific duct 17, and connecting mode is thread connection；Valve 18 is installed in connection
Connect on sebific duct 17；High-pressure rubber pipe 21 is connected with each gas injection tube bank 22 and gas compressor 19 respectively, and connecting mode joins for screw thread
Connect；Valve 20 is installed on high-pressure rubber pipe 21, constitutes ice melting system.The fluid injection tube bank 14 and gas injection tube bank 22 can share one
Set.
The course of work of the present utility model is as follows：
Step 1）At country rock 24 in front of driving face, wait drawing-off gas to finish, drilled using part drawing-off gas
23 build flood pattern, and specific method is as follows：By coupling sebific duct 2, water-supply-pipe 1 is connected with water injecting pump 4, and in connection glue
Valve 3 is installed on pipe 2；Each water filling tube bank 7 is connected with the hole packer in drilling 23 respectively；And distinguished using high-pressure rubber pipe 6
Each water filling tube bank 7 is connected with water injecting pump 4, and valve 5 is installed on high-pressure rubber pipe 6.
Step 2）With the same working face of flood pattern, recycle part drawing-off gas drilling 23 build refrigeration systems, tool
Body method is as follows：By coupling sebific duct 9, freezing liquid cabinet 8 and topping-up pump 11 are connected, and valve is installed on connection sebific duct 9
Door 10；Each fluid injection tube bank 14 is connected with the hole packer in drilling 23 respectively；And using high-pressure rubber pipe 13 respectively by each fluid injection
Tube bank 14 is connected with topping-up pump 11, and valve 12 is installed on high-pressure rubber pipe 13；
Step 3）First start flood pattern, restart refrigeration system, realize that rock mass freezes and freeze, comprise the following steps that：Beat
Valve opening door 3,5, opens water injecting pump 4 to water filling in drilling；After closing valve 5, water injecting pump 4 and valve 3, Ran Houkai after rock mass moistening
Open freezing liquid cabinet 14, valve 10, priming pump 11 in drilling 23 to injecting freezing liquid, until water body freezes, rock mass reinforcing,
So as to form one safer barrier；Then flood pattern and refrigeration system are removed, implements explosion, tunneled forward；Due to
The rock mass strength frozen after freezing is higher, therefore, coal seam with gas will not occur and wash rock stratum open and cause to protrude the phenomenon of accident；
Step 4）When working face is tunneled to the exposed coal position 25 of remote shock blasting, ice melting system is installed, it is specific as follows：
Water-supply-pipe 15 is connected with heater 16；By coupling sebific duct 17, heater 16 and gas compressor 19 are connected, and
Valve 18 is installed on connection sebific duct 17；Each gas injection tube bank 22 is connected with the hole packer in drilling 23 respectively；And using high
With gas compressor 19 be connected for each gas injection tube bank 22 respectively by moulding pipe 21, and valve 20 is installed on high-pressure rubber pipe 21；
Step 5）Blast hole is set in the exposed coal position 25 of remote shock blasting, and installs explosive, before completing explosion
Preparation；Start heater 16 and produce high-temperature vapor, open valve 18, high-temperature gas enters gas by coupling sebific duct 17
Compressor 19, after compression, opens valve 20, is passed to high-pressure rubber pipe 21 and each gas injection tube bank 22 enters drilling 23, in height
Under temperature steam effect, the ice in the rock mass of driving face front will be melted into water, and be full of the rock mass of water, and intensity will be less than original
Beginning rock mass；Now implement remote explosion, it can be ensured that disposably open rock stratum, be not in induce prominent thing because of multiple exposed coal
Therefore phenomenon.
Embodiment：
Coal seam thickness 3m, tunnel 3m high, 4m wide；Original position（A-A positions）Away from the vertical range 20m of coal body, at a distance
The exposed coal position of shock blasting（B-B）Away from the vertical range 2m of coal body.Construction drawing-off gas drilling 23 totally 11 row, 71.It is described
23 early stages that drill are used for drawing-off gas, later stage, for water filling, note freezing liquid, explosion and note high-temperature vapor.
Water-supply-pipe 1,15 is hollow steel pipe, diameter 50mm, wall thickness 2mm, 10m long；Couple the making material of sebific duct 2,9,17
It is rubber, 1m long, external diameter 10mm, wall thickness 1mm；The model RQZ series of security stop valves of valve 3,5,10,12,18,20.
Water injecting pump 4, topping-up pump 11 are the mining biliquid Pneumatic grouting pump of 3ZBQS1210 moulded coals；High-pressure rubber pipe 6,13,21 is liquid
Moulding pipe, external diameter 42mm, wall thickness 2mm；Wherein, high-pressure rubber pipe 6,13 10m long, because high-pressure rubber pipe 21 is used to convey high-temperature water steaming
Long distance work during gas needs, and length is up to 500m；Water filling tube bank 7, fluid injection tube bank 14 and gas injection tube bank 22 are also hydraulic pressure glue
Pipe, each of which root sebific duct, 2m long, external diameter 20mm, wall thickness 2mm.
Freezing liquid cabinet 8 is LNG low-temperature storage tanks, and cryogenic freezing liquid is alcohol；Heater 16 is that RGZ series high-quality circulations add
Hot device；Gas compressor 19 is GGPD serial gas booster pumps.
Mainly thread connection is used between above-mentioned each part.
Claims (5)
1. the Surrounding Rock Strength control device before a kind of stone door punching coal, it is characterised in that including flood pattern, refrigeration system and ice-melt
System；The flood pattern includes water-supply-pipe, water injecting pump and water filling tube bank, and the water inlet end of water injecting pump connects defeated by coupling sebific duct
Water pipe, water side connects each water filling and restrains by high-pressure rubber pipe；The water inlet end of water injecting pump and water side are respectively provided with valve；It is described cold
Jelly system includes freezing liquid cabinet, topping-up pump and fluid injection tube bank, and the liquid feeding end of topping-up pump connects freezing liquid cupboard by coupling sebific duct
Cabinet, outlet end connects fluid injection and restrains by high-pressure rubber pipe, the outlet end that the water side of the water filling tube bank and fluid injection are restrained, point
It is not connected by hole packer with the drilling being arranged on the country rock of driving face front；The ice melting system includes water-supply-pipe, adds
Hot device, gas compressor and fluid injection tube bank, one end connection water-supply-pipe of the heater, the other end connect gas by coupling sebific duct
Gas compressor, the outlet side of gas compressor connects gas injection and restrains by high-pressure rubber pipe, and the two ends of gas compressor are respectively provided with valve
Door, the gas injection tube bank is connected with the drilling at remote shock blasting exposed coal position by hole packer.
2. the Surrounding Rock Strength control device before a kind of stone door punching coal according to claim 1, it is characterised in that each note
Festoon, fluid injection tube bank and gas injection tube bank are made up of many sebific ducts respectively, and the one end per gum duct gathers to form one
Total port, is threadedly coupled with high-pressure rubber pipe, and the other end is respectively provided with connector and is threadedly coupled with hole packer.
3. the Surrounding Rock Strength control device before a kind of stone door punching coal according to claim 2, it is characterised in that described a branch of
Water filling tube bank in every sebific duct be located at be connected with the drilling of a line；Every sebific duct in a branch of fluid injection tube bank be located at it is same
Capable drilling connection, and a drilling is spaced between two sebific ducts.
4. the Surrounding Rock Strength control device before a kind of stone door punching coal according to claim 2, it is characterised in that described a branch of
The drilling of one, interval is installed between every two sebific ducts in gas injection tube bank, and a line is spaced between two beam gas injections tube bank.
5. the Surrounding Rock Strength control device before a kind of stone door punching coal according to claim 1, it is characterised in that the water filling
Upper and lower interval setting is restrained in tube bank and fluid injection, is laid with the frequency that a line fluid injection tube bank is restrained in two row water fillings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234960.5U CN206267852U (en) | 2016-11-18 | 2016-11-18 | A kind of Surrounding Rock Strength control device before stone door punching coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234960.5U CN206267852U (en) | 2016-11-18 | 2016-11-18 | A kind of Surrounding Rock Strength control device before stone door punching coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206267852U true CN206267852U (en) | 2017-06-20 |
Family
ID=59041334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621234960.5U Withdrawn - After Issue CN206267852U (en) | 2016-11-18 | 2016-11-18 | A kind of Surrounding Rock Strength control device before stone door punching coal |
Country Status (1)
| Country | Link |
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| CN (1) | CN206267852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401590A (en) * | 2016-11-18 | 2017-02-15 | 华北科技学院 | Before-rock-cross-cut-coal-uncovering surrounding rock intensity control device and method |
-
2016
- 2016-11-18 CN CN201621234960.5U patent/CN206267852U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401590A (en) * | 2016-11-18 | 2017-02-15 | 华北科技学院 | Before-rock-cross-cut-coal-uncovering surrounding rock intensity control device and method |
| CN106401590B (en) * | 2016-11-18 | 2019-04-30 | 华北科技学院 | Surrounding Rock Strength control device and method before a kind of stone door punching coal |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170620 Effective date of abandoning: 20190430 |
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| AV01 | Patent right actively abandoned |