CN107654248A - Base plate tunnel active anti-burst method and structure - Google Patents
Base plate tunnel active anti-burst method and structure Download PDFInfo
- Publication number
- CN107654248A CN107654248A CN201711208922.1A CN201711208922A CN107654248A CN 107654248 A CN107654248 A CN 107654248A CN 201711208922 A CN201711208922 A CN 201711208922A CN 107654248 A CN107654248 A CN 107654248A
- Authority
- CN
- China
- Prior art keywords
- anchor cable
- coal seam
- drilling
- base plate
- layer
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
Abstract
The invention discloses a kind of base plate tunnel active anti-burst method and structure, and base plate tunnel is opened up in the lower rock stratum below coal seam or below lower rock stratum, forms one layer of palisades layer；Pierce multiple drillings upwards from base plate tunnel, after each drilling through the palisades layer and coal seam, the end of drilling is located in the mantlerock on the upside of coal seam；After the traction of anchor cable head root has fibre hawser, anchor cable head depth to enter foot of hole, then cement mortar will be filled with drilling and forms cement layer.The present invention, as the brace foundation for drawing anchor cable, is processed and draw using the rock stratum of the upper and lower side in coal seam using the multiple rows of anchor cable for passing across coal seam to coal seam.From the intensity that can improve coal seam.It effectively ensure that the security of mining operations.Used anchor cable head and anchor cable can be made using glass fibre material, and work is normally exploited so as to not influence mining machines.
Description
Technical field
The present invention relates to seam mining to put prominent processing technique field, and in particular to a kind of base plate tunnel active anti-burst method
With structure.
Background technology
Because coal seam is than relatively soft, easily changes coal seam force structure in tunneling process, cause prominent accident.Generally,
Firstly the need of borehole discharging methane gas in recovery process.But because coal seam is chronically at underground, compaction rate is high, often bores
Hole exhaust can not thoroughly prevent to protrude accident.Exploitation currently for reinforcing soft broken coal rock to pre- production section, it is necessary to enter
Row grouting and reinforcing, but known grouting mode is simply diagonally to punch and inject high strength reinforcement slurries to form caking
Layer, and the process exploited destroys the coal seam of caking, this grouting mode causes the waste of a large amount of costly slurries, and increase is opened
Adopt cost.
The content of the invention
It is an object of the invention to provide a kind of base plate tunnel active anti-burst method and structure, for improving coal strength,
While pump drainage methane gas, coal seam is firmly fixed with both sides rock stratum and is integrated, reaching thoroughly prevents from protruding accident
Purpose.
To achieve the above object, adopt the following technical scheme that：A kind of base plate tunnel active anti-burst method, under coal seam
In the lower rock stratum of side or below lower rock stratum, base plate tunnel is opened up, so as to form one layer of palisades between coal seam and base plate tunnel
Layer；Pierce the drilling groups that multiple drillings form arrangement upwards from base plate tunnel, each drill through the palisades layer and coal seam it
Afterwards, the end of drilling is located in the mantlerock on the upside of coal seam；Move back and anchor cable head is squeezed into the backward drilling of brill, the traction of anchor cable head root has
Fibre hawser, after anchor cable head depth enters foot of hole, then hell is sealed and is inwardly filled with cement mortar and its solidification is formed water
Mud layer.The plastic bushing of matching is first passed in the drilling, then by anchor cable head and anchor cable insertion plastic bushing.The anchor cable
Head and anchor cable are fibre hawser head and fibre hawser.
A kind of anti-lug structure of base plate tunnel active, bottom is opened up in the lower rock stratum below coal seam or below lower rock stratum
Plate tunnel forms one layer of palisades layer, has multiple drillings to form the drilling group arranged, the end of the drilling through palisades layer and coal seam
End is in the mantlerock on the upside of coal seam；Run through in the drilling and be set with anchor cable head and anchor cable；Positioned at anchor cable head and anchor cable
There is cement layer in outside.In the plastic bushing for drilling and being matched between anchor cable, cement layer is located in plastic bushing.
Beneficial effect：The present invention using the rock stratum of the upper and lower side in coal seam as the brace foundation for drawing anchor cable, using passing across
Multiple rows of anchor cable in coal seam is processed and draw to coal seam.Design a kind of artificial barrier tape, isolation or reduction coal body position
Move, increase coal mass strength, one or multi-channel artificial barrier tape is formed between the working space of miner and unknown coal seam.It is this
Artificial barrier tape can be reduced and poured out caused by gravity, can also stop small-sized Gas Outburst.Running into caused by exploitation
In the case of external and internal pressure difference, the draw of multiple rows of anchor cable can be utilized to keep coal seam not protrude accident.Effectively it ensure that
The security of mining operations.Used anchor cable head and anchor cable can be made using glass fibre material, so as to not influence to exploit
Mechanical normal exploitation work.
Brief description of the drawings
Fig. 1 be the present invention realize view.
Fig. 2 is Fig. 1 operating procedure enlarged drawing.
In figure, label 1 is mantlerock, and 2 be development end, and 3 be coal seam, and 4 be glass fibre anchor cable, and 5 be lower rock stratum, and 6 be bottom
Plate tunnel, 7 be drilling, and 8 be glass fibre anchor cable head, and 9 be cement layer.
Embodiment
Embodiment 1：A kind of base plate tunnel active anti-burst method, it is shown in Figure 1, on the upper side and lower side of coal seam 3 has respectively
Rock stratum 1 and lower rock stratum 5.Again in the lower rock stratum 5 below coal seam 3 or below lower rock stratum 5, base plate tunnel 6 is opened up, so as to
One layer of palisades layer is formed between coal seam 3 and base plate tunnel 6.
Then, multiple drillings 7 are pierced upwards from base plate tunnel 6, form the drilling group containing more row hole drillings, contain per row hole drilling
It is a row to have every 4 drilling 7 in multiple drillings 7, such as Fig. 1, and two rows are one group, front and rear two groups, can also be multigroup.
Each drilling 7 be located at mantlerock 1 on the upside of coal seam 3 through 7 end of after the palisades layer and coal seam 3, drilling
It is interior.
Move back and anchor cable head is squeezed into the backward drilling 7 of brill, the traction of anchor cable head root has fibre hawser, and anchor cable head depth enters 7 bottoms of drilling
Behind portion, then hell is sealed and is inwardly filled with cement mortar and its solidification is formed cement layer 9.Its stream line head and anchor cable are glass
Glass fibre hawser first 8 and glass fibre anchor cable 4.
Embodiment 2：On the basis of embodiment 1, and be first passed in drilling 7 plastic bushing of matching, then by anchor cable head and
In anchor cable insertion plastic bushing.
Embodiment 3：A kind of base plate tunnel actively anti-lug structure, referring to Fig. 1, in the lower rock stratum 5 below coal seam 3 or
The lower section of rock stratum 5 opens up base plate tunnel 6 and forms one layer of palisades layer under person, has multiple drillings to form arrangement through palisades layer and coal seam 3
Drilling group.Wherein, drill 7 end is located in the mantlerock 1 of the upside of coal seam 3.
Referring to Fig. 2, run through in drilling 7 and be set with anchor cable head and anchor cable.There is cement layer on the outside of anchor cable head and anchor cable
9。
Embodiment 4：On the basis of embodiment 3, the plastic bushing that matches between drilling 7 and anchor cable, cement layer 9 is located at
In plastic bushing.
Claims (5)
1. a kind of base plate tunnel active anti-burst method, it is characterized in that：In the lower rock stratum below coal seam or under lower rock stratum
Side, opens up base plate tunnel, so as to form one layer of palisades layer between coal seam and base plate tunnel；Pierced upwards from base plate tunnel multiple
Drilling forms the drilling group of arrangement, and after each drilling through the palisades layer and coal seam, the end of drilling is located on the upside of coal seam
Mantlerock in；Move back and anchor cable head is squeezed into the backward drilling of brill, the traction of anchor cable head root has fibre hawser, and anchor cable head depth enters the bottom that drills
Behind portion, then hell is sealed and is inwardly filled with cement mortar and its solidification is formed cement layer.
2. base plate tunnel active anti-burst method according to claim 1, it is characterized in that：Matching is first passed in the drilling
Plastic bushing, then by anchor cable head and anchor cable insertion plastic bushing in.
3. base plate tunnel active anti-burst method according to claim 1, it is characterized in that：The anchor cable head and anchor cable are fiber
Anchor cable head and fibre hawser.
4. a kind of anti-lug structure of base plate tunnel active, it is characterized in that：In the lower rock stratum below coal seam or under lower rock stratum
Fang Kaishe base plate tunnels form one layer of palisades layer, have multiple drillings to form the drilling group arranged through palisades layer and coal seam, described
The end of drilling is located in the mantlerock on the upside of coal seam；Run through in the drilling and be set with anchor cable head and anchor cable；Positioned at anchor cable
There is cement layer on the outside of head and anchor cable.
5. the anti-lug structure of base plate tunnel active according to claim 1, it is characterized in that：It is described drilling anchor cable between
The plastic bushing matched somebody with somebody, cement layer are located in plastic bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711208922.1A CN107654248A (en) | 2017-11-27 | 2017-11-27 | Base plate tunnel active anti-burst method and structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711208922.1A CN107654248A (en) | 2017-11-27 | 2017-11-27 | Base plate tunnel active anti-burst method and structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107654248A true CN107654248A (en) | 2018-02-02 |
Family
ID=61119736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711208922.1A Pending CN107654248A (en) | 2017-11-27 | 2017-11-27 | Base plate tunnel active anti-burst method and structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN107654248A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603431A (en) * | 2009-07-14 | 2009-12-16 | 中国矿业大学 | A kind of method for reinforcing outburst-prone coal seam cross-cut coal uncovering |
| CN102226405A (en) * | 2011-05-25 | 2011-10-26 | 河北同成矿业科技有限公司 | Method for reinforcing working surface of loose and soft coal bed by utilizing nonmetal grouting anchor cable |
| CN103306713A (en) * | 2013-05-20 | 2013-09-18 | 中国矿业大学 | Networking reinforcement method for cross drilling holes of outburst coal seam |
| WO2014086297A1 (en) * | 2012-12-07 | 2014-06-12 | 中国矿业大学 | Resin cartridge filling method for roadway roof bolt drill hole |
| CN105715297A (en) * | 2016-01-26 | 2016-06-29 | 山东科技大学 | Method for treating heavy inclined seam gob-side entry retaining gangue |
| CN108590739A (en) * | 2018-04-11 | 2018-09-28 | 中国平煤神马能源化工集团有限责任公司 | A kind of prominent tunnel regionality energy divides source to control anti-burst method |
-
2017
- 2017-11-27 CN CN201711208922.1A patent/CN107654248A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603431A (en) * | 2009-07-14 | 2009-12-16 | 中国矿业大学 | A kind of method for reinforcing outburst-prone coal seam cross-cut coal uncovering |
| CN102226405A (en) * | 2011-05-25 | 2011-10-26 | 河北同成矿业科技有限公司 | Method for reinforcing working surface of loose and soft coal bed by utilizing nonmetal grouting anchor cable |
| WO2014086297A1 (en) * | 2012-12-07 | 2014-06-12 | 中国矿业大学 | Resin cartridge filling method for roadway roof bolt drill hole |
| CN103306713A (en) * | 2013-05-20 | 2013-09-18 | 中国矿业大学 | Networking reinforcement method for cross drilling holes of outburst coal seam |
| CN105715297A (en) * | 2016-01-26 | 2016-06-29 | 山东科技大学 | Method for treating heavy inclined seam gob-side entry retaining gangue |
| CN108590739A (en) * | 2018-04-11 | 2018-09-28 | 中国平煤神马能源化工集团有限责任公司 | A kind of prominent tunnel regionality energy divides source to control anti-burst method |
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