CN109209485A - A kind of trapezoidal roadside support body of filling mining and method for protecting support - Google Patents
A kind of trapezoidal roadside support body of filling mining and method for protecting support Download PDFInfo
- Publication number
- CN109209485A CN109209485A CN201811298968.1A CN201811298968A CN109209485A CN 109209485 A CN109209485 A CN 109209485A CN 201811298968 A CN201811298968 A CN 201811298968A CN 109209485 A CN109209485 A CN 109209485A
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- support body
- roadside support
- trapezoidal
- filling
- bag
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- 238000005065 mining Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 27
- 239000003245 coal Substances 0.000 claims abstract description 23
- 238000011084 recovery Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 11
- 239000004567 concrete Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 8
- 239000010878 waste rock Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 8
- 239000011378 shotcrete Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 241000826860 Trapezium Species 0.000 abstract 1
- 230000002045 lasting effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 239000002910 solid waste Substances 0.000 description 3
- 101100008049 Caenorhabditis elegans cut-5 gene Proteins 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000037237 body shape Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
-
- 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
- E21D11/14—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
-
- 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
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a kind of trapezoidal roadside support bodies of filling mining, it is characterized in that, roadside support body cross section is right-angled trapezium, spoil is tunneled or sorted using coal mine as material, trapezoidal roadside support body construction technique include assemble trapezoidal pack wall, anchor pole and metal mesh fix, shotcrete layer, for trapezoidal roadside support body while roof supporting, close the goaf, oblique waist side can provide active lateral support.Effectively reduce the lateral deformation of roadside support body; prop intensity is big; the stabilization of roadside support body is maintained, the recovery ratio of coal resources is improved, construction technology is simple; meet the requirement of coal mine filling exploitation safe construction production; the strength and stability of roadside support body is effectively improved, coal resources recovery ratio is improved, consumes spoil waste; environment is protected, lasting exploit requirement is met.
Description
Technical field
The present invention relates to a kind of roadside support body and method for protecting support, are particularly suitable for the exploitation of comprehensive mechanization solid filling
The trapezoidal roadside support body of the filling mining that no coal column gob side entry retaining working face uses and method for protecting support.
Background technique
In recent years, solid sold stowing coal-mining technique is widely used.This technology is using solid wastes such as spoils
Object replaces " under three " and presses coal resource, realizes and improves resource recovery ratio, scale processing solid waste, preserves the ecological environment
Multiple target realizes the requirement of low eco-environmental damage.Since the 1950s, edge air gallery technology is always China
The direction of assaulting fortified position of the important technology of coal mining.With the development of solid sold stowing technology, the roadside support of gob side entry retaining
Body construction technology is also more mature.
But the roadside support body studied before, section are rectangular cross section, and filling area is laterally pushed away to roadside support body
Power is larger, causes the horizontal distortion of roadside support body larger, and there are also to be strengthened for stability and intensity.
Summary of the invention
Technical problem: shortcoming in view of the above technology, the strength and stability for providing a kind of prop is high, Neng Gouman
The trapezoidal roadside support body of requirement filling mining and method for protecting support of sufficient safety of coal mines construction production.
Technical solution: to realize the above-mentioned technical purpose, the trapezoidal roadside support body of filling mining of the invention, the lane collateral branch
Watch box is assembles pack wall by the lane of gob side entry retaining, pack wall side is ladder structure of right angle, and the pack wall is by filling waste rock
Spoil bag accumulate, be horizontally arranged at interval more double thread formula anchor poles in spoil bag, the pack wall that spoil bag is piled into
Outside is equipped with metal mesh, and metal mesh is equipped with concrete layer, it is ensured that the strength and stability of roadside support body.
For the height of the roadside support body in 2.73~4.37m, the ratio between wide height is 1:1, the folder of oblique waist and bottom
Angle is 75 °~85 °, a length of 2.5~4m in upper bottom edge.
It is described when the height of roadside support body is less than 2.73m, the angle of a length of 2.5m in upper bottom edge, oblique waist and bottom are
75 °~85 °；When the height of roadside support body is greater than 4.37m, a length of 4m in upper bottom edge, the angle of oblique waist and bottom is 75 °~
85°。
A kind of trapezoidal roadside support method of filling mining, its step are as follows:
A. during mined out area edge forms gob side entry retaining, one group is respectively arranged in default goaf filling body two sides
Roadside support body 3, and the spoil generated in recovery process loading spoil bag is spare；
B. prop mould is overlapped on the position of prop using plank sheathing, thus the shape of fixed trapezoidal roadside support body
Shape, to guarantee the oblique waist angle of plank sheathing for 75 °~85 °；
C. by spoil bag from inside to outside, the sequence that gets on, get off presses stubble to assemble, and guarantees spoil bag in prop mould
Prop mould is full of and connects top and uniform force with face roof, gangue bag wall body is ultimately formed, with spoil bag pressure
Stubble assembles process and is respectively equipped with the entire gangue bag wall face of metal mesh covering in spoil bag two sides, and first filling waste rock bag re-lays metal
Net is conveniently adjusted the position of metal mesh and the matching with spoil bag；
D. it laterally constructs in gangue bag wall body double thread formula anchor pole, roadside support body height is greater than 3.5m, installation four
Root anchor pole, roadside support body height are less than 3.5m, install three anchor poles, the top anchor pole is apart from top plate 0.5m, bottom anchor pole
Away from bottom plate 1m, remaining anchor pole is uniformly distributed installation in centre；Deep length one group of anchor pole of installation is cut every primary；
E. it completes metal mesh to be laid with and after rockbolt installation, remove the prop mould that plank sheathing is constituted, to gangue bag wall body
Gunite concrete is reinforced, injection order be get on, get off, stratiform injection, thus make metal mesh, anchor pole and gangue bag wall reinforce at
One, improves the strength and stability of gangue bag wall, to complete one group of roadside support body；
F. goaf filling is carried out in prop after completing one group of roadside support body, as the propulsion of working face repeats
Step is stated, until completing the stoping-and-filling of entire working face.
G. after completing the stoping-and-filling of exploiting field whole working face, exploiting field is recycled with ordinary solid sold stowing coal-mining method
The protection coal pillar on boundary.
The circulation step pitch of every group of roadside support body is the primary length for cutting depth.
The utility model has the advantages that invention describes a kind of trapezoidal roadside support body of filling mining, the trapezoidal lane of this gob side entry retaining
Collateral branch's watch box construction technology is simple, is capable of providing active lateral support, there is good intensity and stability.Pile up pack wall work
For roadside support body, the solid spoil waste in mining area can be rationally handled, moreover it is possible to various coal column resources are recycled, so that coal provides
Source recovery ratio improves.The use of these solid spoil wastes advantageously reduces the environmental pollution in mining area, protects environment of mining area, promotees
Into the sustainable greenization development in mining area.The inventive method is simple, and popularization and application foreground is good.
The trapezoidal roadside support body of filling mining of the invention has innovated the shape of supporting body section, becomes trapezoidal cross-section, this
Kind of shape can provide active lateral support, to effectively reduce the deformation of roadside support body, it is ensured that the intensity of prop and
Stability, and can improve coal resources recovery ratio using solid waste such as spoils, protect the ecological environment in mining area.It can
Good economical, society, environmental benefit are obtained, is had important practical significance and wide application prospect.
Detailed description of the invention
Fig. 1 is the trapezoidal roadside support layout drawing of filling mining of the present invention；
Fig. 2 is the trapezoidal roadside support body construction process schematic representation of the trapezoidal roadside support of filling mining of the present invention.
In figure: 1- coal body；2- gob side entry retaining；3- roadside support body；4- goaf filling body；5- working face open-off cut；6-
Section boundary protection coal pillar；7- filling coal mining working face；8- face roof；9- floor undulation；10- double thread formula anchor
Bar；11- metal mesh；12- spoil bag；13- concrete layer.
Fig. 1 is filling coal mining working face system layout, the position of trapezoidal roadside support body is described, in goaf
Edge, implement edge air gallery technology, trapezoidal roadside support body of the pack wall assembled as gob side entry retaining, while in goaf
Carry out sold stowing.Reach coal mining, roadside support body assembles, goaf sold stowing three is good fit.
Fig. 2 is the trapezoidal roadside support body construction process schematic representation of the present invention, illustrates the shape of roadside support body in figure, with
The positional relationship of goaf (sold stowing) and gob side entry retaining.Describe the mode that assembles of roadside support body, and with metal mesh,
Anchor pole and concrete reinforce roadside support body, it is ensured that the stability and intensity of roadside support body.
Specific embodiment
Implementation of the invention is further described below with reference to certain exploiting field:
As shown in Figure 1, a kind of trapezoidal roadside support body of filling mining, it is characterised in that: the roadside support body 3 is setting
Pack wall is assembled by lane between gob side entry retaining 2 and goaf filling body 4, pack wall side is ladder structure of right angle, described
Pack wall is accumulated by the spoil bag 12 of filling waste rock, and be horizontally arranged at interval more double thread formula anchor poles in spoil bag 12
10, the pack wall outside that spoil bag 12 is piled into is equipped with metal mesh 11, and spraying is equipped with concrete layer 13 on metal mesh 11, it is ensured that lane
The strength and stability of collateral branch's watch box 3, when the height of roadside support body 3 is in 2.73~4.37m, the ratio between wide height is 1:1, tiltedly
Waist and the angle of bottom are 75 °~85 °, a length of 2.5~4m in upper bottom edge, when the height of roadside support body 3 is less than 2.73m, on
The angle of a length of 2.5m in bottom edge, oblique waist and bottom is 75 °~85 °；When the height of roadside support body 3 is greater than 4.37m, upper bottom edge
The angle of a length of 4m, oblique waist and bottom is 75 °~85 °.
A kind of trapezoidal roadside support method of filling mining, its step are as follows:
A. normal work face is arranged, including the coal body 1 immediately ahead of working face, the gob side entry retaining 2 of working face two sides is stayed along sky
It is equipped with goaf filling body 4 between lane 2, filling coal mining working face 7 is equipped between goaf filling body 4 and coal body 1, working face is just
The section boundary protection coal pillar 6 being arranged after the working face open-off cut 5 and working face open-off cut 5 at rear, in mined out area edge shape
During at gob side entry retaining 2, it is respectively arranged one group of roadside support body 3 in default 4 two sides of goaf filling body, and will exploit
It is spare that the spoil generated in journey is packed into spoil bag 12；
B. prop mould is overlapped on the position of prop using plank sheathing, thus fixed trapezoidal roadside support body 3
Shape, to guarantee the oblique waist angle of plank sheathing for 75 °~85 °；
C. by spoil bag 12 from inside to outside, the sequence that gets on, get off presses stubble to assemble, and guarantees spoil in prop mould
Prop mould is full of by bag 12 from floor undulation 9 to face roof 8 connects top, and guarantees uniform force, ultimately forms cash
12 wall of stone bag presses stubble to assemble process and be respectively equipped with metal mesh 11 in 12 two sides of spoil bag and covers entire spoil with spoil bag 12
12 metopes of bag, first filling waste rock bag 12 re-lay metal mesh 11 and are conveniently adjusted the position of metal mesh 11 and with spoil bag 12
Match；
D. it laterally constructs in 12 wall of spoil bag double thread formula anchor pole 10,3 height of roadside support body is greater than 3.5m, peace
Four anchor poles are filled, 3 height of roadside support body is less than 3.5m, installs three anchor poles, the top anchor pole is apart from top plate 0.5m, bottom
Anchor pole is uniformly distributed installation in centre away from bottom plate 1m, remaining anchor pole；Deep length one group of anchor pole of installation is cut every primary；
E. it completes metal mesh 11 to be laid with and after rockbolt installation, remove the prop mould that plank sheathing is constituted, to spoil bag 12
Wall gunite concrete is reinforced, and injection order is gets on, get off, stratiform is sprayed, to make metal mesh 11, anchor pole and spoil bag 12
Wall reinforces integral, the strength and stability of raising 12 wall of spoil bag, to complete one group of roadside support body 3；
F. goaf filling is carried out in prop after completing one group of roadside support body 3, as the propulsion of working face repeats
Above-mentioned steps, until completing the stoping-and-filling of entire working face, the circulation step pitch of every group of roadside support body 3 is primary section deep
Length；
G. after completing the stoping-and-filling of exploiting field whole working face, exploiting field is recycled with ordinary solid sold stowing coal-mining method
Boundary protection coal column 6.
During mined out area edge forms gob side entry retaining 2, the roadside support body 3 that pack wall is gob side entry retaining is assembled,
Assemble the circulation step pitch 0.8m of pack wall.Before assembling pack wall, by the plank sheathing shaped by lapping of prop, the oblique waist angle of plank sheathing
Degree is 80 °.Before bashing, pack wall is assembled rapidly.Pack wall, which is used, fills spoil by woven bag, the side manually piled up
Formula, from inside to outside, the sequence that gets on, get off pressure stubble assembles.Final height is 3m, is completely attached to top plate and bottom plate, and stress is equal
It is even.It with assembling for pack wall, is laid with metal mesh 11 and covers entire spoil metope, and double thread formula anchor pole 10 is installed.
When the pack wall for having carried out a step pitch assembles, and complete metal mesh 11 be laid with and rockbolt installation after, to pack wall
Gunite concrete is reinforced.Injection order is gets on, get off, stratiform is sprayed, and metal mesh 11, anchor pole and pack wall are reinforced integrally,
Improve the strength and stability of pack wall.
Claims (5)
1. a kind of trapezoidal roadside support body of filling mining, it is characterised in that: the roadside support body is to build by the lane of gob side entry retaining
Pack wall is built, pack wall side is ladder structure of right angle, and the pack wall is accumulated by the spoil bag of filling waste rock, spoil bag
In be horizontally arranged at interval more double thread formula anchor poles, metal mesh is equipped on the outside of the pack wall that spoil bag is piled into, on metal mesh
Equipped with concrete layer, it is ensured that the strength and stability of roadside support body.
2. the trapezoidal roadside support body of filling mining according to claim 1, it is characterised in that: the roadside support body
For height in 2.73~4.37m, the ratio between wide height is 1:1, and the angle of oblique waist and bottom is 75 °~85 °, upper bottom edge a length of 2.5
~4m.
3. the trapezoidal roadside support body of filling mining according to claim 1, it is characterised in that: described when roadside support body
When height is less than 2.73m, the angle of a length of 2.5m in upper bottom edge, oblique waist and bottom are 75 °~85 °；When the height of roadside support body
When greater than 4.37m, the angle of a length of 4m in upper bottom edge, oblique waist and bottom are 75 °~85 °.
4. a kind of trapezoidal roadside support method of filling mining using the trapezoidal roadside support body of filling mining described in claim 1,
It is characterized by the following steps:
A. it during mined out area edge forms gob side entry retaining, is respectively arranged by one group of lane in default goaf filling body two sides
Prop, and the spoil generated in recovery process loading spoil bag is spare；
B. prop mould is overlapped on the position of prop using plank sheathing, thus the shape of fixed trapezoidal roadside support body,
To guarantee the oblique waist angle of plank sheathing for 75 °~85 °；
C. by spoil bag from inside to outside, the sequence that gets on, get off presses stubble to assemble, and guarantees that spoil bag will prop up in prop mould
Watch box mould is full of and connects top and uniform force with face roof, ultimately forms gangue bag wall body, as spoil bag pressure stubble is built
Block process is respectively equipped with metal mesh in spoil bag two sides and covers entire gangue bag wall face, and first filling waste rock bag re-lays metal mesh just
Position in adjustment metal mesh and matching with spoil bag；
D. it laterally constructs in gangue bag wall body double thread formula anchor pole, roadside support body height is greater than 3.5m, installs four anchors
Bar, roadside support body height are less than 3.5m, install three anchor poles, the top anchor pole is apart from top plate 0.5m, and bottom anchor pole is the bottom of away from
Plate 1m, remaining anchor pole are uniformly distributed installation in centre；Deep length one group of anchor pole of installation is cut every primary；
E. it completes metal mesh to be laid with and after rockbolt installation, remove the prop mould that plank sheathing is constituted, be sprayed to gangue bag wall body
Concrete strengthening, injection order is gets on, get off, stratiform is sprayed, so that it is integral to reinforce metal mesh, anchor pole and gangue bag wall,
The strength and stability of gangue bag wall is improved, to complete one group of roadside support body；
F. goaf filling is carried out in prop after completing one group of roadside support body, as the propulsion of working face repeats above-mentioned step
Suddenly, until completing the stoping-and-filling of entire working face.
G. after completing the stoping-and-filling of exploiting field whole working face, section boundary is recycled with ordinary solid sold stowing coal-mining method
Protection coal pillar.
5. the trapezoidal roadside support method of filling mining according to claim 4, it is characterised in that: every group of roadside support
The circulation step pitch of body is the primary length for cutting depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811298968.1A CN109209485B (en) | 2018-11-02 | 2018-11-02 | Filling mining trapezoid roadside support body and support method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811298968.1A CN109209485B (en) | 2018-11-02 | 2018-11-02 | Filling mining trapezoid roadside support body and support method |
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| Publication Number | Publication Date |
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| CN109209485A true CN109209485A (en) | 2019-01-15 |
| CN109209485B CN109209485B (en) | 2020-05-08 |
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| CN201811298968.1A Active CN109209485B (en) | 2018-11-02 | 2018-11-02 | Filling mining trapezoid roadside support body and support method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736880A (en) * | 2019-01-22 | 2019-05-10 | 长安大学 | A kind of coal mining obturation and preparation method thereof and technique |
| CN112431630A (en) * | 2020-10-27 | 2021-03-02 | 河南理工大学 | Novel resistance-increasing type large-deformation gob-side entry retaining roadside support structure and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278140A (en) * | 2011-07-05 | 2011-12-14 | 徐州贝壳迈宁矿业科技有限公司 | Gob-side entry retaining method for solid filling coal mining building gangue wall |
| CN102383857A (en) * | 2011-07-05 | 2012-03-21 | 徐州贝壳迈宁矿业科技有限公司 | Gob-side entry retaining process for solid-filling, coal-mining and laying gangue wall |
| CN102661169A (en) * | 2012-04-28 | 2012-09-12 | 山东科技大学 | Gob-side entry retaining method for anchor bolt network gangue bag wall body for coal mining without pillars |
| CN104088662A (en) * | 2014-06-25 | 2014-10-08 | 中国矿业大学 | Construction method of gob-side entry retaining wall of solid filling coal mining |
| US20180238171A1 (en) * | 2015-08-12 | 2018-08-23 | Evolution Resource Group Pty Ltd | Method and apparatus for creating a void for underground mining |
-
2018
- 2018-11-02 CN CN201811298968.1A patent/CN109209485B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278140A (en) * | 2011-07-05 | 2011-12-14 | 徐州贝壳迈宁矿业科技有限公司 | Gob-side entry retaining method for solid filling coal mining building gangue wall |
| CN102383857A (en) * | 2011-07-05 | 2012-03-21 | 徐州贝壳迈宁矿业科技有限公司 | Gob-side entry retaining process for solid-filling, coal-mining and laying gangue wall |
| CN102661169A (en) * | 2012-04-28 | 2012-09-12 | 山东科技大学 | Gob-side entry retaining method for anchor bolt network gangue bag wall body for coal mining without pillars |
| CN104088662A (en) * | 2014-06-25 | 2014-10-08 | 中国矿业大学 | Construction method of gob-side entry retaining wall of solid filling coal mining |
| US20180238171A1 (en) * | 2015-08-12 | 2018-08-23 | Evolution Resource Group Pty Ltd | Method and apparatus for creating a void for underground mining |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736880A (en) * | 2019-01-22 | 2019-05-10 | 长安大学 | A kind of coal mining obturation and preparation method thereof and technique |
| CN112431630A (en) * | 2020-10-27 | 2021-03-02 | 河南理工大学 | Novel resistance-increasing type large-deformation gob-side entry retaining roadside support structure and construction method |
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| CN109209485B (en) | 2020-05-08 |
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