CN110118089A - A kind of mining FRP grid-gangue-self-compacting concrete mat and its construction method - Google Patents
A kind of mining FRP grid-gangue-self-compacting concrete mat and its construction method Download PDFInfo
- Publication number
- CN110118089A CN110118089A CN201910432285.9A CN201910432285A CN110118089A CN 110118089 A CN110118089 A CN 110118089A CN 201910432285 A CN201910432285 A CN 201910432285A CN 110118089 A CN110118089 A CN 110118089A
- Authority
- CN
- China
- Prior art keywords
- gangue
- frp grid
- self
- compacting concrete
- mining
- 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.)
- Granted
Links
- 239000011376 self-consolidating concrete Substances 0.000 title claims abstract description 40
- 238000005065 mining Methods 0.000 title claims abstract description 25
- 238000010276 construction Methods 0.000 title claims abstract description 11
- 238000012856 packing Methods 0.000 claims abstract description 37
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 239000011435 rock Substances 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000004575 stone Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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
Abstract
The invention discloses a kind of mining FRP grid-gangue-self-compacting concrete mat and its construction methods, including FRP grid, gangue packing material, self-compacting concrete.The method of the present invention step includes: to be laid with first layer FRP grid along gob floor after mining top slice；Smashed gangue is filled；Then it is laid with second layer FRP grid；Continue to fill gangue；Self-compacting concrete one-time filling gangue gap is being used after the completion of filling.The beneficial effects of the present invention are: the present invention is by using the corrosion resistant FRP grid of high-strength light, the transversely deforming of granular media bastard coal stone material can effectively be constrained, improve the shear strength and elasticity modulus of gangue discrete material, and using the gap of self-compacting concrete filling gangue discrete material, the heterogeneity sedimentation of granular media aggregate can be effectively inhibited.Construction technology of the present invention is simple, speed of application is fast, and the mat stability of formation is good.
Description
Technical field
The present invention relates to coal mining technology field, specially a kind of mining FRP grid-gangue-self-compacting concrete
Mat and its construction method.
Background technique
When thick seam slicing system, top plate that rock stratum that higher slice is caving is formed by the naturally cementing of certain time
Do mat.The formation of mat includes being caving the compacting and cementing two processes of rock stratum.It is cementing required to reduce nature
Time, generally use yellow mud or waterglass as cementing material.For improve mat stability, usually along higher slice
Top plate is laid with one layer of metal mesh or plastic wire.Since metal mesh easily corrodes, plastic wire intensity is inadequate, is formed using the above method
Mat usually there is stability deficiency, the feature for cohering characteristic difference between fragmented rock body.In lower leaf recovery process
In, the steady of mat cannot be efficiently controlled due to that can not anchor to stable rock stratum using traditional bolt support technology
It is fixed, it is efficiently produced to safety of coal mines and brings threat.Meanwhile in ultra close distance coal seam recovery process, superjacent exploitation pair
The disturbance of bottom plate bring, which also leads to the next roadway support, does not have reliable and stable anchorage zone.To ensure that anchor pole can anchor to surely
Determine rock stratum, it is necessary to develop that a kind of construction technology is simple, mat of high reliablity, change existing separate zone production supporting difficulty
Greatly, the insufficient status of stability.
Summary of the invention
The purpose of the present invention is to provide a kind of mining FRP grid-gangue-self-compacting concrete mats, with solution
Certainly the problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme: a kind of mining FRP grid-gangue-self-compaction is mixed
Solidifying soil mat, including higher slice, the higher slice upper end are overlying rock, and the higher slice lower end is trough rock stratum,
Trough rock stratum lower end is lower leaf, and anchor pole is equipped between the trough rock stratum, and the higher slice bottom is equipped with FRP lattice
Grid, FRP grid upper end are equipped with artificial filling gangue, and the artificial filling gangue upper end is equipped with FRP described in the second layer
Grid, FRP grid upper end described in the second layer are equipped with and manually fill gangue described in the second layer, the artificial filling gangue filling
To the overlying rock bottom, the FRP grid is equipped with mesh, and the overlying rock forms nature heap under action of underground
Long-pending is caving rock, and being caving between rock and the artificial filling gangue for the natural packing is marked with self-compacting concrete.
Preferably, the diameter of the maximum mesh of the FRP grid is less than the average straight of the hand packing gangue
Diameter.
Preferably, the self-compacting concrete can be stirred by sandstone, sand, cement and water, can also pass through coal
Spoil, sand, cement and water stir.
Preferably, the hand packing gangue can be the gangue that underground directly crushes, and be also possible to logical from ground
It crosses vertical feeding system to transport to the gangue of underground, the diameter range of the hand packing gangue can be greater than 200 mm.
Preferably, between two layers of FRP grid spacing be the higher slice thickness half.
Preferably, the self-compacting concrete waits for that the artificial filling gangue is completely filled with after higher slice, disposably
One-piece casting is completed.
Preferably, the FRP grid can be set up two layers or three layers according to practical mining height.
A kind of construction method of mining FRP grid-gangue-self-compacting concrete mat specifically uses following step
It is rapid to implement:
Step 1: the FRP grid is laid with along the higher slice bottom, and first layer institute is then laid with above the FRP grid
State hand packing gangue.
Step 2: after the completion of the hand packing gangue described in the first layer is laid with, it is laid with FRP grid described in the second layer.
Step 3: after the completion of the FRP grid described in the second layer is laid with, the filling the in the top of the second layer FRP grid
Two layers of hand packing gangue, until touching the overlying rock.
Step 4: it after all hand packing gangues are completed in filling, injects the self-compacting concrete and is formed most
Whole mining FRP grid-gangue-self-compacting concrete mat.
Beneficial effects of the present invention
The present invention can effectively constrain the transverse direction of granular media bastard coal stone material by using the corrosion resistant FRP grid of high-strength light
Deformation is improved the shear strength and elasticity modulus of gangue discrete material, and is dissipated using self-compacting concrete filling gangue
The gap of body material can effectively inhibit the heterogeneity sedimentation of granular media aggregate.Construction technology of the present invention is simple, speed of application
Fastly, the mat stability of formation is good.
Detailed description of the invention
Fig. 1 is thick seam slicing system process schematic representation of the invention；
Fig. 2 is the mat that spontaneous caving method of the invention is formed；
Fig. 3 is FRP grid-gangue-self-compacting concrete mat structural schematic diagram of the invention；
Fig. 4 is FRP grid-gangue-self-compacting concrete mat construction schematic diagram of the invention.
Appended drawing reference
1- higher slice, the trough 2- rock stratum, 3- lower leaf, 4- overlying rock, 5- natural packing are caving rock, 6- anchor pole, 7-
Hand packing gangue, 8-FRP grid, 9- mesh, 10- self-compacting concrete.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
Embodiment
As shown in Figs 1-4, a kind of mining FRP grid-gangue-self-compacting concrete mat, including higher slice 1,
1 upper end of higher slice is overlying rock 4, and 1 lower end of higher slice is trough rock stratum 2, and 2 lower end of trough rock stratum is lower leaf 3, is reserved
Anchor pole 6 is equipped between area rock stratum 2,1 bottom of higher slice is equipped with FRP grid 8, and 8 upper end of FRP grid is equipped with artificial filling gangue 7,
Artificial filling 7 upper end of gangue is equipped with FRP grid 8 described in the second layer, and 8 upper end of second layer FRP grid is equipped with the second layer and manually fills out
Gangue 7 is filled, artificial to fill the filling of gangue 7 to 4 bottom of overlying rock, FRP grid 8 is equipped with mesh 9, and overlying rock 4 is in mine
Natural packing is formed under the effect of mountain pressure is caving rock 5, and natural packing is caving between rock 5 and artificial filling gangue 7
It is marked with self-compacting concrete 10.
Preferably, the diameter of the maximum mesh 9 of FRP grid 8 is less than the average diameter of hand packing gangue 7.
Preferably, self-compacting concrete 10 can be stirred by sandstone, sand, cement and water, can also pass through bastard coal
Stone, sand, cement and water stir.
Preferably, hand packing gangue 7 can be the gangue that underground directly crushes, and be also possible to from ground by hanging down
The gangue of material system transfer to underground is delivered directly, the diameter range of the hand packing gangue can be greater than 200 mm.
Preferably, between two layers of FRP grid 8 spacing be 1 thickness of higher slice half.
Preferably, it is disposable whole to pour after self-compacting concrete 10 is completely filled with higher slice to manually filling gangue 7
Build completion.
Preferably, FRP grid 8 can be set up two layers or three layers according to practical mining height.
A kind of construction method of mining FRP grid-gangue-self-compacting concrete mat specifically uses following step
It is rapid to implement:
Step 1: FRP grid 8 is laid with along 1 bottom of higher slice, and first layer hand packing bastard coal is then laid with above FRP grid 8
Stone 7.
Step 2: after the completion of the laying of first layer hand packing gangue 7, it is laid with second layer FRP grid 8.
Step 3: after the completion of the laying of second layer FRP grid 8, second layer people is filled in the top of second layer FRP grid 8
Work fills gangue 7, until touching overlying rock 4.
Step 4: after whole hand packing gangues 7 are completed in filling, injection self-compacting concrete 10 forms final mine
With FRP grid-gangue-self-compacting concrete mat.
Thick seam slicing system usually first exploits higher slice, then exploits lower leaf, for the safety and stability for ensuring lower leaf,
It is stayed usually between higher slice and lower leaf and sets certain thickness trough rock stratum.After higher slice is exploited, overlying rock is in mine
Natural packing is formed under the effect of mountain pressure is caving rock.As time goes by, natural packing is caving rock and will further press
It is real and cementing, ultimately form mat.When exploiting lower leaf, anchor pole can not be anchored to stable upper due to length limitation
Rock stratum, to bring security risk.
FRP grid of the invention passes through formed by extrusion and tension by the glass fibre reinforced composion (FRP) with high-strength light
Technique obtains, and the diameter of the maximum mesh of FRP grid should be less than the average diameter of hand packing gangue.Hand packing coal
Spoil can be the gangue that underground directly crushes, and be also possible to transport from ground by vertical feeding system to the bastard coal of underground
Stone.Different from gangue used in traditional waste filling, gangue diameter range can be greater than 200 mm, and FRP grid passes through limit
The lateral movement of hand packing gangue processed improves the shear strength and elasticity modulus of hand packing gangue.FRP grid is along upper
It is layered bottom to be laid with, first layer hand packing gangue is then laid with above FRP grid, is then laid with second layer FRP grid,
Wherein the longitudinal pitch of two layers of FRP grid is one meter.Full hand packing gangue is filled in the top of second layer FRP grid later
Until touching overlying rock.After completing hand packing gangue, self-compacting concrete is injected, is formed final mining
FRP grid-gangue-self-compacting concrete mat.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of mining FRP grid-gangue-self-compacting concrete mat, it is characterised in that: including higher slice (1), institute
Stating higher slice (1) upper end is overlying rock (4), and higher slice (1) lower end is trough rock stratum (2), the trough rock stratum
(2) lower end is lower leaf (3), is equipped with anchor pole (6) between the trough rock stratum (2), higher slice (1) bottom is equipped with FRP
Grid (8), FRP grid (8) upper end are equipped with artificial filling gangue (7), and artificial filling gangue (7) upper end is equipped with
FRP grid (8) described in the second layer, FRP grid (8) upper end described in the second layer are equipped with described in the second layer and manually fill gangue (7),
To the overlying rock (4) bottom, the FRP grid (8) is equipped with mesh (9), described for artificial filling gangue (7) filling
What overlying rock (4) formed natural packing under action of underground is caving rock (5), and the natural packing is caving rock
(5) self-compacting concrete (10) are marked between the artificial filling gangue (7).
2. mining FRP grid-gangue-self-compacting concrete mat according to claim 1, it is characterised in that:
The diameter of the maximum mesh (9) of the FRP grid (8) is less than the average diameter of the hand packing gangue (7).
3. mining FRP grid-gangue-self-compacting concrete mat according to claim 1, it is characterised in that:
The self-compacting concrete (10) can be stirred by sandstone, sand, cement and water, can also pass through gangue, sand, water
Mud and water stir.
4. mining FRP grid-gangue-self-compacting concrete mat according to claim 1, it is characterised in that:
The hand packing gangue (7) can be the gangue that underground directly crushes, and be also possible to pass through vertical feeding system from ground
System is transported to the gangue of underground, and the diameter range of the hand packing gangue can be greater than 200mm.
5. mining FRP grid-gangue-self-compacting concrete mat according to claim 1, it is characterised in that:
Spacing is the half of the higher slice (1) thickness between two layers of FRP grid (8).
6. mining FRP grid-gangue-self-compacting concrete mat according to claim 1, it is characterised in that:
After the self-compacting concrete (10) is completely filled with higher slice to the artificial filling gangue (7), disposable one-piece casting
It completes.
7. mining FRP grid-gangue-self-compacting concrete mat according to claim 1, it is characterised in that:
The FRP grid (8) can set up two layers or three layers according to practical mining height.
8. according to claim 1 to the grid-gangue-self-compacting concrete mat of mining FRP described in 7 any one
Construction method, it is characterised in that: specifically implemented using following steps:
Step 1: the FRP grid (8) is laid with along the higher slice (1) bottom, is then laid with above the FRP grid (8)
Hand packing gangue (7) described in first layer.
Step 2: after the completion of the hand packing gangue (7) described in the first layer is laid with, it is laid with FRP grid (8) described in the second layer.
Step 3: it after the completion of the FRP grid (8) described in the second layer is laid with, is filled in the top of the second layer FRP grid (8)
Hand packing gangue (7) described in the second layer, until touching the overlying rock (4).
Step 4: after all hand packing gangues (7) are completed in filling, the self-compacting concrete (10) formation is injected
Final mining FRP grid-gangue-self-compacting concrete mat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432285.9A CN110118089B (en) | 2019-05-23 | 2019-05-23 | Mining FRP grid-coal gangue-self-compacting concrete regenerated top plate and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432285.9A CN110118089B (en) | 2019-05-23 | 2019-05-23 | Mining FRP grid-coal gangue-self-compacting concrete regenerated top plate and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110118089A true CN110118089A (en) | 2019-08-13 |
| CN110118089B CN110118089B (en) | 2021-09-07 |
Family
ID=67522963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910432285.9A Active CN110118089B (en) | 2019-05-23 | 2019-05-23 | Mining FRP grid-coal gangue-self-compacting concrete regenerated top plate and construction method thereof |
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| CN (1) | CN110118089B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112001086A (en) * | 2020-08-26 | 2020-11-27 | 湖南科技大学 | Method for determining components of air leakage crack cementing material based on layering characteristics of regenerated top plate |
| CN113638770A (en) * | 2021-08-30 | 2021-11-12 | 烟台杰瑞石油装备技术有限公司 | Goaf filling equipment and method and goaf filling structure |
| CN113898373A (en) * | 2021-10-19 | 2022-01-07 | 辽宁工业大学 | FRP-PVC membrane shell filled with self-compacting coal gangue concrete fireproof combined coal pillar and reinforcing method |
| CN114294008A (en) * | 2022-01-13 | 2022-04-08 | 辽宁工业大学 | FRP strip constraint, sprayed concrete and geogrid combined coal pillar reinforcing method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112001086A (en) * | 2020-08-26 | 2020-11-27 | 湖南科技大学 | Method for determining components of air leakage crack cementing material based on layering characteristics of regenerated top plate |
| CN112001086B (en) * | 2020-08-26 | 2024-01-30 | 湖南科技大学 | Method for determining components of leakage air crack cementing material based on regenerated roof layering characteristics |
| CN113638770A (en) * | 2021-08-30 | 2021-11-12 | 烟台杰瑞石油装备技术有限公司 | Goaf filling equipment and method and goaf filling structure |
| CN113638770B (en) * | 2021-08-30 | 2023-07-18 | 烟台杰瑞石油装备技术有限公司 | Goaf filling equipment and method and goaf filling structure |
| CN113898373A (en) * | 2021-10-19 | 2022-01-07 | 辽宁工业大学 | FRP-PVC membrane shell filled with self-compacting coal gangue concrete fireproof combined coal pillar and reinforcing method |
| CN113898373B (en) * | 2021-10-19 | 2023-10-13 | 辽宁工业大学 | FRP-PVC film shell internally filled with self-compaction gangue concrete fireproof combined coal column and reinforcing method |
| CN114294008A (en) * | 2022-01-13 | 2022-04-08 | 辽宁工业大学 | FRP strip constraint, sprayed concrete and geogrid combined coal pillar reinforcing method |
| CN114294008B (en) * | 2022-01-13 | 2024-03-05 | 辽宁工业大学 | FRP strip constraint and sprayed concrete and geogrid combined coal column reinforcement method |
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| Publication number | Publication date |
|---|---|
| CN110118089B (en) | 2021-09-07 |
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Effective date of registration: 20231213 Address after: 834406 No. 396, Dielun South Street, Hestoluogai Town, Hoboksar Mongol Autonomous County, Tacheng Prefecture, Xinjiang Uygur Autonomous Region Patentee after: Xukuang group Xinjiang Saier Energy Co.,Ltd. Address before: No. 666, Shengli Road, Urumqi, Xinjiang Uygur Autonomous Region Patentee before: XINJIANG University |