CN108979660A - A kind of roadway support device and method for goaf - Google Patents
A kind of roadway support device and method for goaf Download PDFInfo
- Publication number
- CN108979660A CN108979660A CN201811053810.8A CN201811053810A CN108979660A CN 108979660 A CN108979660 A CN 108979660A CN 201811053810 A CN201811053810 A CN 201811053810A CN 108979660 A CN108979660 A CN 108979660A
- Authority
- CN
- China
- Prior art keywords
- trapezoidal
- frame
- plate body
- trapezoidal frame
- frames
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 230000005641 tunneling Effects 0.000 claims abstract description 8
- 241000826860 Trapezium Species 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims 2
- 238000002955 isolation Methods 0.000 claims 1
- 210000003205 muscle Anatomy 0.000 claims 1
- 239000000725 suspension Substances 0.000 description 9
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/005—Props; Chocks, e.g. made of flexible containers filled with backfilling material characterised by the material
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
The present invention proposes a kind of roadway support device for goaf, including at least two first trapezoidal frames, plate body, steel mesh, pull rod and at least two second trapezoidal frames, any two first adjacent trapezoidal frames are arranged at intervals on tunnel bottom along tunneling direction；The inside that plate body is laid on the two adjacent first trapezoidal frames is all screened by its outside；The inside that steel mesh is laid on the plate body all covers it；The tunnel bottom of the inside of a corresponding first trapezoidal frame is arranged in one the second trapezoidal frame, and plate body and steel mesh are clamped between every a pair of second trapezoidal frame and the first trapezoidal frame；Several pull rods are provided between two the first trapezoidal frames between two adjacent the second trapezoidal frames, adjacent；By the first all trapezoidal frames, plate body, steel mesh, pull rod and the second trapezoidal frame whitewashing, it is wrapped to form an entirety.The present invention also proposes a kind of method for protecting support, improves the safety and stability of goaf supporting.
Description
Technical field
The present invention relates to coal mining and support technology field, in particular to a kind of roadway support device and method.
Background technique
Goaf and roof fall area are frequently encountered during tunnelling, roadway support is to take a kind of necessity of security protection
Measure.Current roadway support generally uses suspension roof support, and suspension roof support is that one is formed at the top of tunnel and side effectively
Integrated supporting；But suspension roof support installation very expends the time, and the stability of support frame be easy by tunnel side and
The influence that top strain is concentrated, the reliability of security protection also need more stable roadway support.Goaf common one at present
Kind suspension device is piled up in its supporting two sides materials stone walling, and the work stone wall on both sides is provided with branch support, and heavy workload expends
Time, effect are low；Common another kind suspension device is to utilize the direct supporting of U-shaped frame, but do not have sealing function, can not
Completely cut off toxic and harmful gas.
Summary of the invention
In order to solve in goaf roadway support in the prior art expend the time, stability susceptible, sealing function, with
And the problem of safety, the present invention propose a kind of roadway support device and method for goaf.
The technical scheme of the present invention is realized as follows:
A kind of roadway support device, comprising: at least two first trapezoidal frames, plate body, steel mesh, pull rod and at least two second
Trapezoidal frame, any two first adjacent trapezoidal frames are uniformly arranged at intervals on tunnel bottom along tunneling direction；The plate
Body is laid on the inside of any two the first adjacent trapezoidal frames and its outside is all screened；The steel mesh is laid on the plate
The inside of body simultaneously all covers it；The lane of the inside of a corresponding first trapezoidal frame is arranged in one the second trapezoidal frame
Road bottom, plate body and steel mesh are clamped between every a pair of second trapezoidal frame and the first trapezoidal frame；Adjacent two second
Several pull rods are provided between two the first trapezoidal frames between trapezoidal frame, adjacent；By the first all trapezoidal canopies
Frame, plate body, steel mesh, pull rod and the second trapezoidal frame whitewashing, are wrapped to form an entirety, integral thickness is at least up to 200mm.
Preferably, grillage is filled between top and the tunnel top of the first trapezoidal frame.
Preferably, the structure of the described first trapezoidal frame and the second trapezoidal frame is identical, the first trapezoidal frame packet
An opposite side U-shaped capplce of side and the top U-shaped capplce at top are included, the top of an opposite side U-shaped capplce forms seam allowance, pushes up U-shaped capplce
It is welded on the stop portion of an opposite side U-shaped capplce.
Preferably, the pull rod includes the body of rod and connection frame, and connection frame is set as the trapezium structure of bottom opening, connection
Two bottoms of frame extend out, and two outside portions of connection frame are provided with fixing piece, pass through fixation between two adjacent connection frames
Part connects a body of rod.
Preferably, further includes: triangle voussoir, triangle voussoir are arranged between steel mesh and the second trapezoidal frame,
So that plate body and steel mesh are clamped between every a pair of second trapezoidal frame and the first trapezoidal frame.
Preferably, the described first trapezoidal frame further includes a pair of height-adjustable canopy leg, and a pair of of canopy leg is arranged one
The bottom end of opposite side U-shaped capplce, to be embedded in the tunnel bottom.
A method of for realizing above-mentioned roadway support device, comprising: uniform along its tunneling direction inside tunnel
Interval be arranged and the first trapezoidal frame and be fixed in tunnel bottom；It is utilized between two the first trapezoidal frames of arbitrary neighborhood
Several pull rods prop up positioning, and haystack is filled between the first trapezoidal frame and tunnel top；In each the first trapezoidal canopy
A second trapezoidal frame is arranged in the inside of frame, and the second trapezoidal frame is fixed on tunnel bottom；It is first trapezoidal at adjacent two
Inside between frame is fixedly installed plate body, and plate body will be completely isolated inside and outside two the first trapezoidal frames, in the inside of plate body
Steel mesh, the second trapezoidal frame and the first trapezoidal frame is laid with to clamp steel mesh and plate body；By the first all trapezoidal frames,
Plate body, steel mesh, pull rod and the second trapezoidal frame whitewashing, are wrapped to form an entirety, integral thickness is at least up to 200mm.
Preferably, the structure of the described first trapezoidal frame and the second trapezoidal frame is identical, the first trapezoidal frame packet
Include an opposite side U-shaped capplce of side, the top U-shaped capplce at top and a pair of height-adjustable canopy leg, the top of an opposite side U-shaped capplce
End forms seam allowance, and top U-shaped capplce is welded on the stop portion of an opposite side U-shaped capplce；An opposite side U-shaped capplce is arranged in a pair of of canopy leg
Bottom end；
The needling that 300-500mm depth is dug at the position for fixing the first trapezoidal frame and the second trapezoidal frame of tunnel bottom,
The bottom end pad of needling sets pad post cap, a canopy leg is embedded in corresponding needling fixed.
Preferably, the described second trapezoidal frame and the first trapezoidal frame press from both sides steel mesh and plate body using triangle voussoir
Tightly.
Preferably, the pull rod includes the body of rod and connection frame, and connection frame is set as the trapezium structure of bottom opening, connection
Two bottoms of frame extend out, and two outside portions of ladder frame are provided with fixing piece, pass through fixation between two adjacent connection frames
Part connects a body of rod.
The invention has the benefit that the present invention proposes a kind of roadway support device for goaf, adjacent
It is by plate body that outside in the supporting of the first trapezoidal frame formation is completely separated between one trapezoidal frame, one is formed inside tunnel
A independent supporting frame；Steel mesh is laid on the inside of plate body again, is clamped steel mesh and plate body using the second trapezoidal frame,
The first all trapezoidal frames, plate body, steel mesh, pull rod and the second trapezoidal frame are whitewashed finally by whitewashing, are wrapped to form
One entirety, integral thickness are at least up to 200mm.The roadway support device, entire tunnel are persistently promoted along the tunnel of driving
Suspension device is integrated, and is being passed through mined out region, can quickly passed through goaf, can both prevent toxic, harmful in goaf
Gas pours in digging laneway, and can prevent fresh distinguished and admirable inflow goaf in digging laneway, reduces air leak rate of air curtain；And reinforce peace
Quan Xing greatly increases the stability of roadway support, improves the installation effectiveness of suspension device, and then improve entire tunneling process
Job security and working efficiency.
The present invention also proposes a kind of laneway support method, improves the installation effectiveness of suspension device when by goaf, pole
The safety of big raising suspension device, increases the safety guarantee of staff.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of roadway support device of the present invention；
Fig. 2 is the flat cutting cross-section diagram of roadway support device shown in Fig. 1.
In figure:
1, the first trapezoidal frame；2, plate body；3, steel mesh；4, the second trapezoidal frame；5, tunnel bottom；6, grillage；7, pull rod；8,
Voussoir；71, connecting rod；72, ladder frame；73, fixing piece.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of roadway support device for goaf as depicted in figs. 1 and 2, comprising: at least two first trapezoidal canopies
Frame 1, plate body 2, steel mesh 3, at least two second trapezoidal frames 4 and pull rod 7, any two first adjacent trapezoidal frames 1 along
Tunneling direction is uniformly arranged at intervals on tunnel bottom 5；Plate body 2 is laid on the inside of any two the first adjacent trapezoidal frames 1
And the outside of the two the first adjacent trapezoidal frames 1 is all screened；Steel mesh 3 is laid on the inside of plate body 2, and by plate body
2 all cover；The inside of a corresponding first trapezoidal frame 1 is arranged in one the second trapezoidal frame 4, and is fixed on tunnel bottom
Portion 5, and plate body 2 and steel mesh 3 are clamped between every a pair of second trapezoidal frame and the first trapezoidal frame；Adjacent two
Several pull rods are provided between two the first trapezoidal frames between two trapezoidal frames, adjacent；All first is trapezoidal
Frame, plate body, steel mesh, pull rod and the second trapezoidal frame whitewashing, are wrapped to form an entirety, integral thickness is at least up to
200mm。
In order to simplify the structure of the first trapezoidal frame and the second trapezoidal frame and improve its stability, the first trapezoidal frame
Identical with the structure of the second trapezoidal frame, the first trapezoidal frame includes the top U-shaped of an opposite side U-shaped capplce of side, top
Capplce and, a pair of height-adjustable canopy leg, the top of an opposite side U-shaped capplce forms seam allowance, and top U-shaped capplce is welded on an opposite side
The stop portion of U-shaped capplce；The bottom end of an opposite side U-shaped capplce is arranged in a pair of of canopy leg, to be embedded in the tunnel bottom.
As shown in Fig. 2, pull rod 7 includes the body of rod 71 and connection frame 72, connection frame 72 is set as the trapezium structure of bottom opening,
Two bottoms of connection frame 72 extend out, and two outside portions of connection frame are provided with fixing piece 73, between two adjacent connection frames
A body of rod is connected by fixing piece.
Between steel mesh and the second trapezoidal frame be arranged triangle voussoir 8 so that plate body and steel mesh be clamped in it is each
To between the second trapezoidal frame and the first trapezoidal frame.
A method of for realizing roadway support device, comprising: between uniform along its tunneling direction inside tunnel
Every the first trapezoidal frame of setting and it is fixed in tunnel bottom；Using several between two the first trapezoidal frames of arbitrary neighborhood
A pull rod props up positioning, and haystack is filled between the first trapezoidal frame and tunnel top；In each the first trapezoidal frame
A second trapezoidal frame is arranged in inside, and the second trapezoidal frame is fixed on tunnel bottom；In two adjacent the first trapezoidal frames
Between inside be fixedly installed plate body, plate body will be completely isolated inside and outside two the first trapezoidal frames, plate body inside be laid with
Steel mesh, the second trapezoidal frame and the first trapezoidal frame clamp steel mesh and plate body；By the first all trapezoidal frames, plate
Body, steel mesh, pull rod and the second trapezoidal frame whitewashing, are wrapped to form an entirety, integral thickness is at least up to 200mm.
It is steady in order to simplify the structure of the first trapezoidal frame and the second trapezoidal frame in laneway support method and improve it
Qualitative, the structure of the first trapezoidal frame and the second trapezoidal frame is identical.The structure phase of first trapezoidal frame and the second trapezoidal frame
Together, the described first trapezoidal frame includes that an opposite side U-shaped capplce of side, the top U-shaped capplce at top and a pair are height-adjustable
Canopy leg, the top of an opposite side U-shaped capplce form seam allowance, and top U-shaped capplce is welded on the stop portion of an opposite side U-shaped capplce；A pair of of canopy
The bottom end of an opposite side U-shaped capplce is arranged in leg；In the position for fixing the first trapezoidal frame and the second trapezoidal frame of tunnel bottom
The needling of 300-500mm depth is dug at place, and in the bottom end of needling, pad sets pad post cap, and a canopy leg is embedded in corresponding needling and is fixed,
Improve fixed stability.
Second trapezoidal frame and the first trapezoidal frame clamp steel mesh and plate body using triangle voussoir, also can use
Other connection structures are fixed.Pull rod includes the body of rod and connection frame, and connection frame is set as the trapezium structure of bottom opening, connection frame
Two bottoms extend out, and two outside portions of ladder frame are provided with fixing piece, are connected between two adjacent connection frames by fixing piece
Connect a body of rod.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of roadway support device characterized by comprising at least two first trapezoidal frames, plate body, steel mesh, pull rod
With at least two second trapezoidal frames, any two first adjacent trapezoidal frames are uniformly arranged at intervals on lane along tunneling direction
Road bottom；The plate body is laid on the inside of any two the first adjacent trapezoidal frames and its outside is all screened；The steel
Muscle net laying is located at the inside of the plate body and all covers it；One the second trapezoidal frame setting is first trapezoidal at corresponding one
The tunnel bottom of the inside of frame, plate body and steel mesh are clamped between every a pair of second trapezoidal frame and the first trapezoidal frame；
Several pull rods are provided between two the first trapezoidal frames between two adjacent the second trapezoidal frames, adjacent；By institute
The trapezoidal frame of first had, plate body, steel mesh, pull rod and the second trapezoidal frame whitewashing, are wrapped to form an entirety, integral thickness
At least up to 200mm.
2. roadway support device according to claim 1, which is characterized in that at the top of the top of the first trapezoidal frame and tunnel
Between fill grillage.
3. roadway support device according to claim 1, which is characterized in that the first trapezoidal frame and the second trapezoidal canopy
The structure of frame is identical, and the first trapezoidal frame includes an opposite side U-shaped capplce of side and the top U-shaped capplce at top, an opposite side U
The top of shape capplce forms seam allowance, and top U-shaped capplce is welded on the stop portion of an opposite side U-shaped capplce.
4. roadway support device according to claim 1, which is characterized in that the pull rod includes the body of rod and connection frame, is connected
The trapezium structure that frame is set as bottom opening is connect, two bottoms of connection frame extend out, and two outside portions of connection frame are provided with solid
Determine part, passes through fixing piece one body of rod of connection between two adjacent connection frames.
5. roadway support device according to claim 1, which is characterized in that further include: triangle voussoir, triangle voussoir
It is arranged between steel mesh and the second trapezoidal frame, so that plate body and steel mesh are clamped in every a pair of second trapezoidal frame and first
Between trapezoidal frame.
6. roadway support device according to claim 3, which is characterized in that the first trapezoidal frame further includes that a pair can
The canopy leg of height is adjusted, the bottom end of an opposite side U-shaped capplce is arranged in a pair of of canopy leg, to be embedded in the tunnel bottom.
7. a kind of method for realizing roadway support device described in claim 1 characterized by comprising inside tunnel
It is uniformly spaced the first trapezoidal frame of setting along its tunneling direction and is fixed in tunnel bottom；Two of arbitrary neighborhood
Positioning is propped up using several pull rods between one trapezoidal frame, haystack is filled between the first trapezoidal frame and tunnel top；
One the second trapezoidal frame is set in the inside of each the first trapezoidal frame, the second trapezoidal frame is fixed on tunnel bottom；?
Inside between two adjacent the first trapezoidal frames is fixedly installed plate body, and plate body will be complete inside and outside two the first trapezoidal frames
Isolation is laid with steel mesh, the second trapezoidal frame and the first trapezoidal frame in the inside of plate body and clamps steel mesh and plate body；By institute
The trapezoidal frame of first had, plate body, steel mesh, pull rod and the second trapezoidal frame whitewashing, are wrapped to form an entirety, integral thickness
At least up to 200mm.
8. laneway support method according to claim 7, which is characterized in that the first trapezoidal frame and the second trapezoidal canopy
The structure of frame is identical, and the first trapezoidal frame includes an opposite side U-shaped capplce of side, the top U-shaped capplce at top and a pair can
The canopy leg of height is adjusted, the top of an opposite side U-shaped capplce forms seam allowance, and top U-shaped capplce is welded on the seam allowance of an opposite side U-shaped capplce
Place；The bottom end of an opposite side U-shaped capplce is arranged in a pair of of canopy leg；
The needling that 300-500mm depth is dug at the position for fixing the first trapezoidal frame and the second trapezoidal frame of tunnel bottom,
The bottom end pad of needling sets pad post cap, a canopy leg is embedded in corresponding needling fixed.
9. laneway support method according to claim 7, which is characterized in that the second trapezoidal frame and the first trapezoidal canopy
Frame clamps steel mesh and plate body using triangle voussoir.
10. laneway support method according to claim 7, which is characterized in that the pull rod includes the body of rod and connection frame, is connected
The trapezium structure that frame is set as bottom opening is connect, two bottoms of connection frame extend out, and two outside portions of ladder frame are provided with solid
Determine part, passes through fixing piece one body of rod of connection between two adjacent connection frames.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811053810.8A CN108979660A (en) | 2018-09-11 | 2018-09-11 | A kind of roadway support device and method for goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811053810.8A CN108979660A (en) | 2018-09-11 | 2018-09-11 | A kind of roadway support device and method for goaf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108979660A true CN108979660A (en) | 2018-12-11 |
Family
ID=64545450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811053810.8A Pending CN108979660A (en) | 2018-09-11 | 2018-09-11 | A kind of roadway support device and method for goaf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108979660A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863984A (en) * | 2021-10-29 | 2021-12-31 | 安徽理工大学 | Method for preventing air leakage in mining of extremely-close coal seam groups |
-
2018
- 2018-09-11 CN CN201811053810.8A patent/CN108979660A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863984A (en) * | 2021-10-29 | 2021-12-31 | 安徽理工大学 | Method for preventing air leakage in mining of extremely-close coal seam groups |
| CN113863984B (en) * | 2021-10-29 | 2024-03-22 | 安徽理工大学 | Method for preventing and controlling air leakage in exploitation of extremely-close coal seam group |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206722878U (en) | A kind of mining light-duty filling counterfort | |
| CN105370289B (en) | A kind of existing pipeline overlength Dryopteris sublaetaChing et Hsu method of complex environment | |
| CN104763435B (en) | Construction method of shallow-buried excavation type large cross section of tunnel in tail slag filling area | |
| CN102661169A (en) | Gob-side entry retaining method for anchor bolt network gangue bag wall body for coal mining without pillars | |
| KR101899441B1 (en) | Double order system adjusting horizontal length of steel pipe supporter in the tunnel and the structure of the pipe supporter and method constructing thereof | |
| CN103334385A (en) | Anti-stone-falling flexible stone blocking wall | |
| CN206000543U (en) | A kind of supporting construction protecting lane for gob side entry retaining | |
| CN108952804A (en) | For blocking the tailing-filled barricade and construction method of dead zone mining tunnel to be filled | |
| CN106988760A (en) | Facility-sliding strata tunnel portal reinforcing construction and construction method | |
| CN205172609U (en) | Asymmetric supporting device in tunnel | |
| CN106121676A (en) | A kind of supporting construction and method for protecting support thereof protecting lane for gob side entry retaining | |
| CN106150522B (en) | A kind of top plate using inspection instrument for borehole detection Collapsed zone collapses administering method | |
| CN108979660A (en) | A kind of roadway support device and method for goaf | |
| CN113073656B (en) | Soil protection structure between support piles and construction method thereof | |
| CN105736010A (en) | Supporting structure for extremely-narrow coal pillar roadway driving along goaf and construction method of supporting structure | |
| CN208793009U (en) | A kind of roadway support device for goaf | |
| KR20160000792A (en) | Natm tunnel structure and construction method thereof | |
| CN110821530A (en) | Non-expanding excavation type tunnel water burst and support treatment method | |
| CN208619164U (en) | For blocking the tailing-filled barricade of dead zone mining tunnel to be filled | |
| CN103572761A (en) | Protection method for existing line nearby construction by using brook protective screenings | |
| CN103244158B (en) | Reinforced structure that anchor beam net integration was strutted | |
| CN109958459A (en) | A kind of loose thick coal layer is along bottom driving method | |
| CN113294178B (en) | Combined support system for extremely-broken surrounding rock tunnel and construction method thereof | |
| CN207891914U (en) | Shallow-depth-excavation tunnel hole inner termination wall piled anchor one supporting construction | |
| CN209780959U (en) | Subway underground excavation tunnel drainage structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |