CN105863647A - Rock burst control method for roadway driving work surface of coal mine high-stress area - Google Patents
Rock burst control method for roadway driving work surface of coal mine high-stress area Download PDFInfo
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- CN105863647A CN105863647A CN201610197353.4A CN201610197353A CN105863647A CN 105863647 A CN105863647 A CN 105863647A CN 201610197353 A CN201610197353 A CN 201610197353A CN 105863647 A CN105863647 A CN 105863647A
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- boring
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
Abstract
The invention discloses a rock burst control method for a roadway driving work surface of a coal mine high-stress area. The rock burst control method includes the following steps that A, drilling detection is carried out on the roadway driving work surface of the high-stress area, and a rock burst control area is determined; B, drilling pressure relief is carried out in the rock burst control area, the drilling positions are distributed along a roadway, and two sets of drilled holes are formed in each drilling position; C, detonators are arranged in the second drilled hole and the third drilled hole, curing grout is injected in the fourth drilled hole, odd or even number marking is carried out in the drilling positions in the roadway according to the position sequence, and two times of explosion are adopted for pressure relief; D, after explosion, the tops of steel pipes are inserted into the fifth drilled hole, the sixth drilled hole and the seventh drilled hole, and reinforcement ribs are connected between the steel pipes located in each second drilled hole set; and E, along with driving of the roadway, the steps from A to D are executed circularly. The rock burst control method for the roadway driving work surface of the coal mine high-stress area can overcome the defects in the prior art and improves the control effect on rock burst.
Description
Technical field
The present invention relates to technical field of mine safety, the high stress areas tunnelling work of especially a kind of colliery
Face Controlling of Coal Outburst method.
Background technology
Along with increase and the expansion of scope of the pit mining degree of depth, geological tectonic conditions all the more complicates, and ground should
Power and coal and rock energy are bigger, and bump is the most increasingly severe.And tunnelling is met head on, front is often accompanied by structure
Make, coal rock layer textural anomaly, gas are abnormal, and therefore, deep-well structure complicated seam tunnelling meets head on to rush
Pressing preventing and treating with hitting is the technical barrier that solution is presently required.Press while the damaging impact met head in tunnel occurs and make
The danger become is continuously increased, and the preventing and treating of current this kind of bump does not has essence with conventional prevention and controls
Difference, mainly takes danger releasing measures, including the boring measure such as release, General Explosive release.Along with mining depth
Degree increases, and these conventional measures are extremely difficult to reduce the purpose of danger of burst degree in itself, simultaneously because
There is concealed danger, it is abnormal difficult that it controls difficulty, and the relief range that current means are formed is little, makes
Becoming heavily stressed transfer not in place, energy release is insufficient, and bump is difficult to control to, and is susceptible to rank
Bigger energy release, causes great loss.When the abnormal region of high stress is met head on to exist in tunnel, often implement
When the drillhole blasting of rule and boring release, creep into the most highly difficult, solve danger effect poor.
Chinese invention patent CN 102425416 B discloses a kind of colliery high stress areas roadway head
Controlling of Coal Outburst method.By carrying out deep inspecting hole, alleviate the release of impact energy.But, this side
The bump that work surface is nearer is only carried out alleviating release by method, still exists during long-time use
The hidden danger of bump.
Summary of the invention
The technical problem to be solved in the present invention is to provide the high stress areas roadway head punching of a kind of colliery
Press prevention and controls with hitting, it is possible to solve the deficiencies in the prior art, improve the prevention effect for bump.
For solving above-mentioned technical problem, the technical solution used in the present invention is as follows.
A kind of colliery high stress areas roadway head Controlling of Coal Outburst method, comprises the steps:
A, carry out bore detecting at the driving face of high stress areas, determine Controlling of Coal Outburst region；
B, carry out in Controlling of Coal Outburst region hole release, bore position is along roadway layout；Each brill
Arrange on hole site that two groups of borings, two groups of borings include the first boring group and the second boring group, the first boring group
Including the first boring, the second boring, the 3rd boring and the 4th boring, the first boring is perpendicular to work surface probing,
Second boring is 40 °～50 ° with the angle of the first boring, and the 3rd boring with the angle of the first boring is
60 °～70 °, the second boring is 100 °～110 ° with the angle of the 3rd boring, and the second boring is with the 3rd
Boring end with first boring end be connected, the 4th boring is parallel to the first boring, the 4th boring and
The distance of the second boring and the 3rd boring is equal；Second boring group includes the 5th boring, the 6th boring and the 7th
Boring, the 5th boring and the 6th boring are perpendicular to work surface probing, and the 7th boring with the angle of work surface is
120 °～135 °, the 5th boring, the 6th boring and the 7th boring form triangle with the contact point of work surface；
C, second boring and the 3rd boring in detonator is set, the 4th boring in perfusion hardening slurry, by
Bore position in tunnel carries out odd or even number mark according to sequence of positions, uses two separate explosions to carry out release, single
Number bore position carries out onepull, and then even numbers labeling position carries out second time explosion；
Steel pipe top is used to insert the 5th boring, the 6th boring and the 7th boring, bottom steel pipe after D, explosion
It is supported on bottom surface, connection strengthening rib between the steel pipe in each second boring group；
E, driving along with tunnel, be circulated construction to above-mentioned A-D step, every time construction distance for 25m～
40m。
As preferably, the degree of depth of described first boring is 4.5m, a diameter of 135mm；The degree of depth of the second boring
For 3m, a diameter of 90mm；The degree of depth of the 3rd boring is 5.5m, a diameter of 75mm；The degree of depth of the 4th boring
For 7m, a diameter of 80mm；Detonator interval in second boring and the 3rd boring is arranged, between each detonator
Be spaced apart 0.25m.
As preferably, the degree of depth of described 5th boring and the 6th boring is 2.5m, a diameter of 230mm, the 7th
The degree of depth of boring is 3m, a diameter of 200mm.
As preferably, in step C, hardening slurry includes following components,
The polyacrylate of 3wt%～5wt%, the silicone oil of 5wt%～7wt%, the 5-ethyl of 1.5wt%～2wt%
Thiophene-2-formaldehyde, the isoamyl butyrate of 3.5wt%～4wt%, the lead tetraethyl of 0.2wt%～0.25wt%,
The stearylmercaptan of 0.5wt%～0.7wt%, the zinc phosphate of 7.8wt%～10wt%, surplus are cement.
As preferably, in step D, the support pressure of the steel pipe in the 5th boring and the 6th boring is maintained at
0.4MPa～0.6MPa, the support pressure of the steel pipe in the 7th boring is maintained at 0.8MPa～1MPa.
What employing technique scheme was brought has the beneficial effects that: the present invention is by changing tunnel work surface
Blasting method, the cushion pressed with forming a shock absorbing after explosion on work surface, and by for slow
Rush grouting and the support of layer, it is achieved that cushion is fixed.During life-time service, cushion can
Carry out long-term absorption buffering with the impact energy gradually inside discharged, thus improve for bump
Prevention effect.
Detailed description of the invention
In order to make objects and advantages of the present invention clearer, below in conjunction with embodiment, the present invention is carried out
Further describe.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
Embodiments provide a kind of colliery high stress areas roadway head Controlling of Coal Outburst
Method, comprises the steps:
A, carry out bore detecting at the driving face of high stress areas, determine Controlling of Coal Outburst region；
B, carry out in Controlling of Coal Outburst region hole release, bore position is along roadway layout；Each brill
Arrange on hole site that two groups of borings, two groups of borings include the first boring group and the second boring group, the first boring group
Including the first boring, the second boring, the 3rd boring and the 4th boring, the first boring is perpendicular to work surface probing,
Second boring is 45 ° with the angle of the first boring, and the 3rd boring is 65 ° with the angle of the first boring, the
The angle of two borings and the 3rd boring is 103 °, and the second boring and the end of the 3rd boring and first are holed
End is connected, the 4th boring is parallel to the first boring, the 4th boring with second boring and the 3rd hole away from
From equal；Second boring group includes the 5th boring, the 6th boring and the 7th boring, and the 5th boring and the 6th is bored
Hole is perpendicular to work surface probing, and the 7th boring is 125 ° with the angle of work surface, the 5th boring, the 6th brill
The contact point composition equilateral triangle of hole and the 7th boring and work surface；The degree of depth of described first boring is 4.5m,
A diameter of 135mm；The degree of depth of the second boring is 3m, a diameter of 90mm；The degree of depth of the 3rd boring is 5.5m,
A diameter of 75mm；The degree of depth of the 4th boring is 7m, a diameter of 80mm；In second boring and the 3rd boring
Detonator interval is arranged, is spaced apart 0.25m between each detonator.It is deep that described 5th boring and the 6th is holed
The degree of depth that degree is holed for 2.5m, a diameter of 230mm, the seven is 3m, a diameter of 200mm.
C, second boring and the 3rd boring in detonator is set, the 4th boring in perfusion hardening slurry, by
Bore position in tunnel carries out odd or even number mark according to sequence of positions, uses two separate explosions to carry out release, single
Number bore position carries out onepull, and then even numbers labeling position carries out second time explosion；Hardening slurry includes
Following components,
The polyacrylate of 3wt%～5wt%, the silicone oil of 5wt%～7wt%, the 5-ethyl of 1.5wt%～2wt%
Thiophene-2-formaldehyde, the isoamyl butyrate of 3.5wt%～4wt%, the lead tetraethyl of 0.2wt%～0.25wt%,
The stearylmercaptan of 0.5wt%～0.7wt%, the zinc phosphate of 7.8wt%～10wt%, surplus are cement.
Steel pipe top is used to insert the 5th boring, the 6th boring and the 7th boring, bottom steel pipe after D, explosion
It is supported on bottom surface, connection strengthening rib between the steel pipe in each second boring group；5th boring and the
The support pressure of the steel pipe in six borings is maintained at 0.4MPa～0.6MPa, propping up of the steel pipe in the 7th boring
Bulging power is maintained at 0.8MPa～1MPa.
E, driving along with tunnel, be circulated construction to above-mentioned A-D step, and construction distance is 30m every time.
The construction method quoted in background technology is used to carry out many with the construction method of offer in above-described embodiment
Secondary Construction Comparison, was observed after complete half a year of constructing, and the point of burst of every hundred meters provides in background technology
Construction method is 20～30 in carrying out the tunnel constructed, and the construction method provided at above-described embodiment is carried out
Within being held in 5 in the tunnel of construction.
The above is only the preferred embodiment of the present invention.It should be pointed out that, for the art is common
For technical staff, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (5)
1. a colliery high stress areas roadway head Controlling of Coal Outburst method, it is characterised in that
Comprise the steps:
A, carry out bore detecting at the driving face of high stress areas, determine Controlling of Coal Outburst region；
B, carry out in Controlling of Coal Outburst region hole release, bore position is along roadway layout；Each brill
Arrange on hole site that two groups of borings, two groups of borings include the first boring group and the second boring group, the first boring group
Including the first boring, the second boring, the 3rd boring and the 4th boring, the first boring is perpendicular to work surface probing,
Second boring is 40 °～50 ° with the angle of the first boring, and the 3rd boring with the angle of the first boring is
60 °～70 °, the second boring is 100 °～110 ° with the angle of the 3rd boring, and the second boring is with the 3rd
Boring end with first boring end be connected, the 4th boring is parallel to the first boring, the 4th boring and
The distance of the second boring and the 3rd boring is equal；Second boring group includes the 5th boring, the 6th boring and the 7th
Boring, the 5th boring and the 6th boring are perpendicular to work surface probing, and the 7th boring with the angle of work surface is
120 °～135 °, the 5th boring, the 6th boring and the 7th boring form triangle with the contact point of work surface；
C, second boring and the 3rd boring in detonator is set, the 4th boring in perfusion hardening slurry, by
Bore position in tunnel carries out odd or even number mark according to sequence of positions, uses two separate explosions to carry out release, single
Number bore position carries out onepull, and then even numbers labeling position carries out second time explosion；
Steel pipe top is used to insert the 5th boring, the 6th boring and the 7th boring, bottom steel pipe after D, explosion
It is supported on bottom surface, connection strengthening rib between the steel pipe in each second boring group；
E, driving along with tunnel, be circulated construction to above-mentioned A-D step, every time construction distance for 25m～
40m。
Colliery the most according to claim 1 high stress areas roadway head Controlling of Coal Outburst
Method, it is characterised in that: the degree of depth of described first boring is 4.5m, a diameter of 135mm；Second boring
The degree of depth is 3m, a diameter of 90mm；The degree of depth of the 3rd boring is 5.5m, a diameter of 75mm；4th boring
The degree of depth is 7m, a diameter of 80mm；Detonator interval in second boring and the 3rd boring is arranged, each detonator
Between be spaced apart 0.25m.
Colliery the most according to claim 1 high stress areas roadway head Controlling of Coal Outburst
Method, it is characterised in that: the degree of depth of described 5th boring and the 6th boring is 2.5m, a diameter of 230mm,
The degree of depth of the 7th boring is 3m, a diameter of 200mm.
Colliery the most according to claim 1 high stress areas roadway head Controlling of Coal Outburst
Method, it is characterised in that: in step C, hardening slurry includes following components,
The polyacrylate of 3wt%～5wt%, the silicone oil of 5wt%～7wt%, the 5-ethyl of 1.5wt%～2wt%
Thiophene-2-formaldehyde, the isoamyl butyrate of 3.5wt%～4wt%, the lead tetraethyl of 0.2wt%～0.25wt%,
The stearylmercaptan of 0.5wt%～0.7wt%, the zinc phosphate of 7.8wt%～10wt%, surplus are cement.
Colliery the most according to claim 1 high stress areas roadway head Controlling of Coal Outburst
Method, it is characterised in that: in step D, the support pressure of the steel pipe in the 5th boring and the 6th boring keeps
The support pressure of the steel pipe in 0.4MPa～0.6MPa, the 7th boring is maintained at 0.8MPa～1MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610197353.4A CN105863647B (en) | 2016-03-28 | 2016-03-28 | A kind of colliery high stress areas roadway head Controlling of Coal Outburst method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610197353.4A CN105863647B (en) | 2016-03-28 | 2016-03-28 | A kind of colliery high stress areas roadway head Controlling of Coal Outburst method |
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| Publication Number | Publication Date |
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| CN105863647A true CN105863647A (en) | 2016-08-17 |
| CN105863647B CN105863647B (en) | 2017-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610197353.4A Active CN105863647B (en) | 2016-03-28 | 2016-03-28 | A kind of colliery high stress areas roadway head Controlling of Coal Outburst method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843331A (en) * | 2018-07-06 | 2018-11-20 | 山东科技大学 | Slim hole joint release method for arranging under the equivalent drilling area of one kind |
| CN113266360A (en) * | 2021-04-29 | 2021-08-17 | 中煤科工开采研究院有限公司 | Method for preventing rock burst by tunneling roadway penetration |
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|---|---|---|---|---|
| CN101936162A (en) * | 2010-04-16 | 2011-01-05 | 兖州煤业股份有限公司 | Method for preventing rock burst of bottom plate of layered tunnel in tectonic stress region of coal mine |
| CN102220866A (en) * | 2011-04-17 | 2011-10-19 | 山东科技大学 | Pressure relief and consolidation synergizing prevention and control method for rock burst in deep coal drift |
| CN102425416A (en) * | 2011-09-12 | 2012-04-25 | 山东科技大学 | Coal mine high stress area roadway driving face impact ground pressure control method |
| CN102518471A (en) * | 2011-11-14 | 2012-06-27 | 山东科技大学 | Rock burst energy releasing method of roadway of high stress area in coal mine |
| CN103557000A (en) * | 2013-11-07 | 2014-02-05 | 北京科技大学 | Method for preventing gob-side entry rock burst through side-drawing filling |
-
2016
- 2016-03-28 CN CN201610197353.4A patent/CN105863647B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936162A (en) * | 2010-04-16 | 2011-01-05 | 兖州煤业股份有限公司 | Method for preventing rock burst of bottom plate of layered tunnel in tectonic stress region of coal mine |
| CN102220866A (en) * | 2011-04-17 | 2011-10-19 | 山东科技大学 | Pressure relief and consolidation synergizing prevention and control method for rock burst in deep coal drift |
| CN102425416A (en) * | 2011-09-12 | 2012-04-25 | 山东科技大学 | Coal mine high stress area roadway driving face impact ground pressure control method |
| CN102518471A (en) * | 2011-11-14 | 2012-06-27 | 山东科技大学 | Rock burst energy releasing method of roadway of high stress area in coal mine |
| CN103557000A (en) * | 2013-11-07 | 2014-02-05 | 北京科技大学 | Method for preventing gob-side entry rock burst through side-drawing filling |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843331A (en) * | 2018-07-06 | 2018-11-20 | 山东科技大学 | Slim hole joint release method for arranging under the equivalent drilling area of one kind |
| CN113266360A (en) * | 2021-04-29 | 2021-08-17 | 中煤科工开采研究院有限公司 | Method for preventing rock burst by tunneling roadway penetration |
| CN113266360B (en) * | 2021-04-29 | 2023-12-15 | 中煤科工开采研究院有限公司 | Tunneling roadway penetration rock burst prevention method |
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| CN105863647B (en) | 2017-11-21 |
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