CN109268047A - Laminated structure and method are unloaded in a kind of supporting in bump tunnel - Google Patents
Laminated structure and method are unloaded in a kind of supporting in bump tunnel Download PDFInfo
- Publication number
- CN109268047A CN109268047A CN201811294908.2A CN201811294908A CN109268047A CN 109268047 A CN109268047 A CN 109268047A CN 201811294908 A CN201811294908 A CN 201811294908A CN 109268047 A CN109268047 A CN 109268047A
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- Prior art keywords
- bump
- tunnel
- supporting
- laminated structure
- bump tunnel
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000011435 rock Substances 0.000 claims abstract description 33
- 238000004880 explosion Methods 0.000 claims abstract description 16
- 238000010276 construction Methods 0.000 claims abstract description 12
- 238000004080 punching Methods 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims abstract description 5
- 230000037431 insertion Effects 0.000 claims abstract description 5
- 238000005422 blasting Methods 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 230000005641 tunneling Effects 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 20
- 239000000725 suspension Substances 0.000 abstract description 10
- 238000005065 mining Methods 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 5
- 239000003245 coal Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000009527 percussion Methods 0.000 description 3
- 230000003313 weakening effect Effects 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to mining technical fields, more particularly to laminated structure and method are unloaded in a kind of supporting in bump tunnel, including supporting construction and unload laminated structure, supporting construction includes anchor pole and anchor cable, anchor pole is by the inner wall insertion country rock in bump tunnel, anchor cable is by the inner wall insertion country rock in bump tunnel, anchor pole and anchor cable alternate setting；Unloading laminated structure includes destressing borehole and explosion part, and destressing borehole is pierced from the inner wall in bump tunnel into country rock, and explosion part is located at the end of destressing borehole.The present invention, which carries out setting up in the country rock in bump tunnel, forms suspension roof support body, when bump occurs, the compound shock resistance body that suspension roof support body and cable bolting body are collectively formed, under bump impact loading, anchor pole cooperates with energy-absorbing to subtract punching with anchor cable, the energy that bump generation can effectively be absorbed prevents impact failure of the bump to tunnel, improves bump tunnel shock resistance.
Description
Technical field
The present invention relates to mining technical fields more particularly to a kind of supporting in bump tunnel to unload laminated structure and side
Method.
Background technique
With the gradually exploitation of coal resources in China, the mining depth of coal resources is gradually developed from superficial part to deep, deep
Portion's exploitation of coal resources is often accompanied with the coal rock dynamic disasters such as bump, rock burst and coal and gas prominent, seriously threatens
The safety in production in mine.Bump tunnel mainly uses the method for protecting support such as common bolt, U-shaped steel, O-shaped canopy at present, these branch
Under bump effect overall collapse, which easily occurs, for maintaining method destroys, and the deformation that not can be effectively controlled bump tunnel is broken
It is bad.
Summary of the invention
(1) technical problems to be solved
The technical problem to be solved by the present invention is to solve existing bump roadway support pole under bump effect
The problem of overall collapse destroys, not can be effectively controlled the deformation failure in bump tunnel easily occurs.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides a kind of supportings in bump tunnel to unload laminated structure, including
Supporting construction and laminated structure is unloaded, the supporting construction includes anchor pole and anchor cable, and the anchor pole is inserted by the inner wall in bump tunnel
Enter in country rock, the anchor cable is by the inner wall insertion country rock in the bump tunnel, the anchor pole and the anchor cable interval are handed over
For setting；The laminated structure that unloads includes destressing borehole and explosion part, the destressing borehole by the bump tunnel inner wall
It is pierced into country rock, the explosion part is located at the end of the destressing borehole.
Wherein, the anchor pole is uniformly distributed on the tunneling boring in the bump tunnel.
Wherein, the anchor cable is uniformly distributed on the tunneling boring in the bump tunnel.
Wherein, the length of the anchor cable is greater than the length of the anchor pole, and the length of the destressing borehole is greater than the anchor cable
Length.
It wherein, further include metal mesh, the metal mesh is set on the outside of the anchor pole.
Wherein, the destressing borehole is uniformly distributed on the tunneling boring in the bump tunnel.
Wherein, the anchor pole is made of steel, and the yield strength of the anchor pole is greater than 700MPa, and rupture strength is greater than
800MPa, impact absorbing energy are greater than 120J, and elongation after fracture is greater than 20%, and pretightning force is greater than 60kN.
Wherein, the anchor cable is made of steel, and the intensity of the anchor cable is greater than 1770MPa, and elongation after fracture is greater than 7%,
Pretightning force is greater than 250kN.
Wherein, the metal mesh is worked out using No. 8 iron wires, and size of mesh opening is 35mm × 35mm.
The present invention also provides a kind of supporting pressure relief methods in bump tunnel, comprising the following steps:
S1, the inner wall in bump tunnel are laid with metal mesh；
S2 sets anchor pole into country rock from the inner wall in bump tunnel；
S3 sets anchor cable into country rock from the inner wall in bump tunnel and completes supporting；
S4 is drilled with destressing borehole to country rock from the inner wall in bump tunnel；
S5 places explosion part unloading pressure by blasting in the end of destressing borehole.
(3) beneficial effect
Above-mentioned technical proposal of the invention has the advantages that laminated structure is unloaded in the supporting in bump tunnel of the present invention,
On the basis of high-tensile, high impact toughness, high pretightening force anchor pole, cooperate high-strength, high-elongation anchor cable, in bump lane
It is set up in the country rock in road, high-tensile, high impact toughness, high pretightening force anchor pole form suspension roof support body, high-strength, Gao Yan
It stretches rate anchor cable and forms cable bolting body, when bump occurs, suspension roof support body is collectively formed compound with cable bolting body
Shock resistance body after the completion of supporting, arranges destressing borehole around tunnel, and the bottom explosive explosion part explosion of destressing borehole is unloaded
Pressure, to form unloading pressure by blasting area.When bump occurs, the shock loading that bump generates first passes through unloading pressure by blasting
Qu Hou, unloading pressure by blasting area weakening part shock loading, remaining shock loading are transferred near roadway surrounding rock, are rushed in bump
It hits under load effect, anchor pole cooperates with energy-absorbing to subtract punching with anchor cable, can effectively absorb the energy of bump generation, prevents impact ground
The impact failure to tunnel is pressed, bump tunnel shock resistance is improved, it is easy under percussion to solve bump tunnel
The supporting problem of deformation failure, and technical guarantee is provided for similar techniques condition pit mining, meet the branch of increasingly complicated mine
Shield requires.And the configuration of the present invention is simple, construction technology is simple, is convenient for execute-in-place, support cost is low, has a wide range of applications
Prospect.
In addition to it is described above present invention solves the technical problem that, constitute technical solution technical characteristic and have this
Except advantage brought by the technical characteristic of a little technical solutions, other technical characteristics of the invention and these technical characteristic brings
Advantage will be further illustrated in conjunction with attached drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the supporting construction in bump of embodiment of the present invention tunnel.
In figure: 1: anchor pole；2: anchor cable；3: bump tunnel；4: country rock；5: destressing borehole；6: explosion part.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In addition, in the description of the present invention, unless otherwise indicated, " multiple ", " more ", " multiple groups " be meant that two or
Two or more, " several ", " several ", " several groups " are meant that one or more.
As shown in Figure 1, laminated structure is unloaded in the supporting in bump tunnel provided in an embodiment of the present invention, including supporting construction and
Laminated structure is unloaded, supporting construction includes anchor pole 1 and anchor cable 2, and anchor pole 1 is inserted into country rock 4 by the inner wall in bump tunnel 3, anchor cable 2
By in the inner wall insertion country rock 4 in bump tunnel 3, anchor pole 1 and anchor cable 2 alternate setting；Unloading laminated structure includes that release is bored
Hole 5 and explosion part 6, destressing borehole 5 are pierced from the inner wall in bump tunnel 3 into country rock 4, and explosion part 6 is located at destressing borehole 5
End.
Laminated structure is unloaded in the supporting in bump tunnel of the present invention, in high-tensile, high impact toughness, high pretightening force anchor pole
On the basis of, cooperate high-strength, high-elongation anchor cable, is set up in the country rock in bump tunnel, high-tensile, Gao Chong
Hit toughness, high pretightening force anchor pole forms suspension roof support body, high-strength, high-elongation anchor cable formation cable bolting body, in bump
When generation, the compound shock resistance body that suspension roof support body and cable bolting body are collectively formed after the completion of supporting, is arranged around tunnel
Destressing borehole, the bottom explosive explosion part unloading pressure by blasting of destressing borehole, to form unloading pressure by blasting area.When bump is sent out
When raw, behind unloading pressure by blasting area, unloading pressure by blasting area weakening part shock loading remains the shock loading of bump generation first
Remaining shock loading is transferred near roadway surrounding rock, and under bump impact loading, anchor pole cooperates with energy-absorbing to subtract with anchor cable
Punching can effectively absorb the energy of bump generation, prevent impact failure of the bump to tunnel, improve bump lane
Road shock resistance solves the supporting problem of bump tunnel easily-deformable destruction under percussion, and is similar techniques item
Part pit mining provides technical guarantee, meets the supporting requirement of increasingly complicated mine.And the configuration of the present invention is simple, construction technology
Simply, it is convenient for execute-in-place, support cost is low, is with a wide range of applications.
Wherein, anchor pole 1 is uniformly distributed on the tunneling boring in bump tunnel 3.Wherein, anchor cable 2 is uniformly distributed in impact
It presses on the tunneling boring in tunnel 3 on ground.Wherein, destressing borehole 5 is uniformly distributed on the tunneling boring in bump tunnel 3.High tensile is strong
Degree, high impact toughness, high pretightening force anchor pole form suspension roof support body, and high-strength, high-elongation anchor cable forms cable bolting body, rushing
Press progress tunneling boring erection in tunnel with hitting.Destressing borehole tunneling boring is uniformly drilled with the unloading pressure by blasting area gamut point for guaranteeing to be formed
Cloth.
Wherein, the length of anchor cable 2 is greater than the length of anchor pole 1, and the length of destressing borehole 5 is greater than the length of 2 anchor cables.Anchor cable expands
The supporting area of big supporting depth and country rock deep layer, improves supporting effect and shock resistance effect.
Wherein, it further includes metal mesh that laminated structure is unloaded in the supporting in bump tunnel of the present invention, and metal mesh is set to outside anchor pole 1
Side.Wherein, metal mesh is worked out using No. 8 iron wires, and size of mesh opening is 35mm × 35mm.When roadway support structural outer occurs
When bump, anchor pole, anchor cable and metal mesh effectively absorb the energy of bump, are impacting to solve bump tunnel
The technical problem of easily-deformable destruction under effect.Conventional metals net is worked out using No. 10 iron wires, size of mesh opening be 50mm ×
50mm, bearing capacity 20kN or so, metal mesh of the invention are worked out using No. 8 iron wires, and size of mesh opening is 35mm × 35mm,
The integer support intensity of compound shock resistance body is set to improve 1 times or more.
Wherein, anchor pole 1 is made of steel, and the yield strength of anchor pole 1 is greater than 700MPa, and rupture strength is greater than 800MPa, punching
It hits and absorbs function greater than 120J, elongation after fracture is greater than 20%, and pretightning force is greater than 60kN.Wherein, anchor cable 2 is made of steel, anchor cable 2
Intensity be greater than 1770MPa, elongation after fracture be greater than 7%, pretightning force be greater than 250kN.Anchor pole and anchor cable are by a kind of special steel
It is made, the steel strength is high, and impact absorbing energy is high, and after shock loading, which is not likely to produce crackle, deformation, breaks
It is bad.It is greater than 700MPa by using yield strength, rupture strength is greater than 800MPa, and impact absorbing energy is greater than 120J, extension of having no progeny
Rate is greater than 20%, and pretightning force is greater than the anchor pole of 60kN, uses anchor pole yield strength 400MPa, rupture strength compared to traditional supporting
Greater than 540MPa, impact absorbing energy is greater than 30J, and elongation after fracture is greater than 15%, and only 10-20kN is compared pretightning force, of the invention
Anchor pole tensile strength, impact flexibility, pretightning force are greatly improved, and traditional supporting anchorage cable intensity is 1720MPa, have no progeny and prolong
It stretches rate and is greater than 3.5% pretightning force only 100kN, compared with traditional supporting anchorage cable, anchor cable of the invention is in intensity, toughness, pretightning force
It is improved.Anchor pole cooperates high-strength, high-elongation anchor cable, is set up in the country rock in bump tunnel, high-tensile,
High impact toughness, high pretightening force anchor pole form suspension roof support body, and high-strength, high-elongation anchor cable forms cable bolting body.
The embodiment of the invention also provides a kind of supporting pressure relief methods in bump tunnel, comprising the following steps:
S1, the inner wall in bump tunnel are laid with metal mesh；
S2 sets anchor pole into country rock from the inner wall in bump tunnel；
S3 sets anchor cable into country rock from the inner wall in bump tunnel and completes supporting；
S4 is drilled with destressing borehole to country rock from the inner wall in bump tunnel；
S5 places explosion part unloading pressure by blasting in the end of destressing borehole.
In conclusion laminated structure is unloaded in the supporting in bump tunnel of the present invention, in high-tensile, high impact toughness, height
On the basis of pretightning force anchor pole, cooperates high-strength, high-elongation anchor cable, set up in the country rock in bump tunnel, highly resistance
Tensile strength, high impact toughness, high pretightening force anchor pole form suspension roof support body, and high-strength, high-elongation anchor cable forms cable bolting body,
When bump occurs, the compound shock resistance body that suspension roof support body and cable bolting body are collectively formed, after the completion of supporting, in lane
Destressing borehole, the bottom explosive explosion part unloading pressure by blasting of destressing borehole, to form unloading pressure by blasting area are arranged around road.When
When bump occurs, the shock loading of bump generation is behind unloading pressure by blasting area first, unloading pressure by blasting area weakening part
Shock loading, remaining shock loading are transferred near roadway surrounding rock, under bump impact loading, anchor pole and anchor cable
Collaboration energy-absorbing subtracts punching, can effectively absorb the energy of bump generation, prevent impact failure of the bump to tunnel, improves
Bump tunnel shock resistance, solves the supporting problem of bump tunnel easily-deformable destruction under percussion, and is
Similar techniques condition pit mining provides technical guarantee, meets the supporting requirement of increasingly complicated mine.And the configuration of the present invention is simple,
Its construction technology is simple, is convenient for execute-in-place, support cost is low, is with a wide range of applications.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. laminated structure is unloaded in a kind of supporting in bump tunnel, it is characterised in that: including supporting construction and unload laminated structure, the branch
Protection structure includes anchor pole and anchor cable, and the anchor pole is by the inner wall insertion country rock in bump tunnel, the anchor cable is by the punching
The inner wall in tunnel is pressed to be inserted into country rock with hitting, the anchor pole and the anchor cable alternate setting；The laminated structure that unloads includes unloading
Pressure drilling and explosion part, the destressing borehole are pierced from the inner wall in the bump tunnel into country rock, explosion part position
In the end of the destressing borehole.
2. laminated structure is unloaded in the supporting in bump tunnel according to claim 1, it is characterised in that: the anchor pole uniformly divides
It is distributed on the tunneling boring in the bump tunnel.
3. laminated structure is unloaded in the supporting in bump tunnel according to claim 1, it is characterised in that: the anchor cable uniformly divides
It is distributed on the tunneling boring in the bump tunnel.
4. laminated structure is unloaded in the supporting in bump tunnel according to claim 1, it is characterised in that: the length of the anchor cable
Greater than the length of the anchor pole, the length of the destressing borehole is greater than the length of the anchor cable.
5. laminated structure is unloaded in the supporting in bump tunnel according to claim 1, it is characterised in that: it further include metal mesh,
The metal mesh is set on the outside of the anchor pole.
6. laminated structure is unloaded in the supporting in bump tunnel according to claim 1, it is characterised in that: the destressing borehole is equal
On the even tunneling boring for being distributed in the bump tunnel.
7. the supporting construction in bump tunnel according to claim 1, it is characterised in that: the anchor pole is by steel system
At the yield strength of the anchor pole is greater than 700MPa, and rupture strength is greater than 800MPa, and impact absorbing energy is greater than 120J, has no progeny and prolong
Rate is stretched greater than 20%, and pretightning force is greater than 60kN.
8. laminated structure is unloaded in the supporting in bump tunnel according to claim 1, it is characterised in that: the anchor cable is by steel
It is made, the intensity of the anchor cable is greater than 1770MPa, and elongation after fracture is greater than 7%, and pretightning force is greater than 250kN.
9. laminated structure is unloaded in the supporting in bump tunnel according to claim 5, it is characterised in that: the metal mesh uses
No. 8 iron wires are worked out, and size of mesh opening is 35mm × 35mm.
10. a kind of supporting pressure relief method in bump tunnel, it is characterised in that: the following steps are included:
S1, the inner wall in bump tunnel are laid with metal mesh；
S2 sets anchor pole into country rock from the inner wall in bump tunnel；
S3 sets anchor cable into country rock from the inner wall in bump tunnel and completes supporting；
S4 is drilled with destressing borehole to country rock from the inner wall in bump tunnel；
S5 places explosion part unloading pressure by blasting in the end of destressing borehole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811294908.2A CN109268047A (en) | 2018-11-01 | 2018-11-01 | Laminated structure and method are unloaded in a kind of supporting in bump tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811294908.2A CN109268047A (en) | 2018-11-01 | 2018-11-01 | Laminated structure and method are unloaded in a kind of supporting in bump tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN109268047A true CN109268047A (en) | 2019-01-25 |
Family
ID=65191073
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811294908.2A Pending CN109268047A (en) | 2018-11-01 | 2018-11-01 | Laminated structure and method are unloaded in a kind of supporting in bump tunnel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110318761A (en) * | 2019-07-02 | 2019-10-11 | 天地科技股份有限公司 | A kind of construction method controlling roadway deformation |
| CN111608663A (en) * | 2020-04-29 | 2020-09-01 | 临沂矿业集团菏泽煤电有限公司 | Omnibearing pressure relief method for rock burst dangerous roadway of thick coal seam working face |
| CN111608707A (en) * | 2020-04-29 | 2020-09-01 | 临沂矿业集团菏泽煤电有限公司 | Rock burst dangerous roadway support method based on double-cylinder protection theory |
| CN111720139A (en) * | 2020-06-19 | 2020-09-29 | 煤炭科学技术研究院有限公司 | Roadway impact ground pressure structure cooperative prevention and control method influenced by repeated mining |
| CN112709571A (en) * | 2019-10-24 | 2021-04-27 | 西安闪光能源科技有限公司 | Coal mine tunnel rock burst prevention and control method based on controllable shock wave pre-splitting pressure relief |
| CN112903480A (en) * | 2021-01-15 | 2021-06-04 | 安徽理工大学 | Deep roadway anchor rod or anchor cable impact tensile damage judgment and control method thereof |
| CN113494299A (en) * | 2021-07-22 | 2021-10-12 | 河海大学 | Tunnel rockburst grading prevention and control method using NPR material |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318761A (en) * | 2019-07-02 | 2019-10-11 | 天地科技股份有限公司 | A kind of construction method controlling roadway deformation |
| CN112709571A (en) * | 2019-10-24 | 2021-04-27 | 西安闪光能源科技有限公司 | Coal mine tunnel rock burst prevention and control method based on controllable shock wave pre-splitting pressure relief |
| CN111608663A (en) * | 2020-04-29 | 2020-09-01 | 临沂矿业集团菏泽煤电有限公司 | Omnibearing pressure relief method for rock burst dangerous roadway of thick coal seam working face |
| CN111608707A (en) * | 2020-04-29 | 2020-09-01 | 临沂矿业集团菏泽煤电有限公司 | Rock burst dangerous roadway support method based on double-cylinder protection theory |
| CN111720139A (en) * | 2020-06-19 | 2020-09-29 | 煤炭科学技术研究院有限公司 | Roadway impact ground pressure structure cooperative prevention and control method influenced by repeated mining |
| CN111720139B (en) * | 2020-06-19 | 2021-11-23 | 煤炭科学技术研究院有限公司 | Roadway impact ground pressure structure cooperative prevention and control method influenced by repeated mining |
| CN112903480A (en) * | 2021-01-15 | 2021-06-04 | 安徽理工大学 | Deep roadway anchor rod or anchor cable impact tensile damage judgment and control method thereof |
| CN112903480B (en) * | 2021-01-15 | 2024-01-26 | 安徽理工大学 | Deep roadway anchor rod or anchor cable impact tensile failure judgment and control method thereof |
| CN113494299A (en) * | 2021-07-22 | 2021-10-12 | 河海大学 | Tunnel rockburst grading prevention and control method using NPR material |
| CN113494299B (en) * | 2021-07-22 | 2022-08-02 | 河海大学 | Tunnel rockburst grading prevention and control method using NPR material |
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