CN111502751B - Air bag type retaining wall for underground cemented filling and construction method - Google Patents
Air bag type retaining wall for underground cemented filling and construction method Download PDFInfo
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- CN111502751B CN111502751B CN202010474633.1A CN202010474633A CN111502751B CN 111502751 B CN111502751 B CN 111502751B CN 202010474633 A CN202010474633 A CN 202010474633A CN 111502751 B CN111502751 B CN 111502751B
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- air bag
- filling
- retaining wall
- roadway
- valve
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- 238000010276 construction Methods 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000011435 rock Substances 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 2
- 230000008018 melting Effects 0.000 claims 2
- 238000005065 mining Methods 0.000 description 7
- 239000004576 sand Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
Images
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
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
- E21F15/04—Stowing mats; Goaf wire netting; Partition walls
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The air bag type retaining wall comprises an air bag, a valve, a metal chain net and a reinforcing rope net, wherein the air bag is a closed space body made of rubber materials, the valve is connected with the air bag through a valve seat or a guide pipe, a circle of metal anchor rods are symmetrically anchored at a bottom plate, a roadway wall and a vault of a roadway, the end of the metal chain net is buckled with the anchor rods on the periphery of the roadway, the reinforcing rope net is wrapped on the outer surface of the air bag, and a section of gunny bag is arranged at the bottom corners of two sides of the bottom plate of the roadway. The invention also discloses a construction method of the air bag type retaining wall for underground cemented filling, and the application method is simple and convenient to operate, quick to disassemble and assemble and high in engineering practicability.
Description
Technical Field
The invention relates to the technical field of mining engineering, in particular to an air bag type retaining wall for underground cemented filling and a construction method.
Background
The filling mining method has high mining recovery rate, small dilution rate and high resource utilization rate; the ground pressure can be effectively controlled, geological disasters caused by ground collapse, cracking, mountain collapse and the like can be prevented, and the water inflow of a mine can be greatly reduced; the empty area can be filled with waste rocks, tailings and other wastes, and a large-area waste rock dam and a tailing pond are not required to be constructed on the ground, so that the surrounding environment of the mining area can be effectively improved. In recent years, the national strength on mineral resource protection and environmental protection is increasing, and mining by a filling method has become the first choice of underground mining. The filling retaining wall is an important ring in water sand filling and cemented filling processes, and can effectively plug filling materials in a goaf. The main structural types of the traditional retaining wall are a concrete retaining wall, a brick retaining wall, a sand bag retaining wall, a wooden retaining wall and the like. Although the concrete retaining wall has high strength, the construction cost is high, and the maintenance time is long; the brick retaining wall has large using amount of building blocks and poor impact resistance, and is easy to displace and crack in the filling process; the sand bag retaining wall has large using amount of sand bags, the stacking quality is difficult to ensure, and slippage and collapse are easy to generate; the wooden retaining wall has low strength, poor static pressure resistance and great influence by the height of the filling body.
In addition to the above problems, conventional retaining walls suffer from several common drawbacks: the combination of the retaining wall and surrounding rocks of the surrounding roadway is poor, the sealing degree is not enough, and slurry leakage are easy to occur; the retaining wall component has low repeated utilization rate, large consumption and high cost; the building process has high labor intensity and long time consumption, and influences the mining progress.
In recent years, several new retaining walls have appeared in succession, for example, CN103485822A discloses a combined rapid blocking retaining wall, which is composed of a sealed air bag, a side frame, a transverse telescopic supporting rod, a vertical telescopic vertical rod and an intercepting water filtering net. The combined type rapid plugging retaining wall is complex in structure, many purchased parts, complex in construction operation, high in labor intensity and high in comprehensive cost. CN204609936U discloses a rapid-built filling retaining wall, which is composed of a filling bag, a supporting gas column, a feeding hole and an exhaust hole. The rapid constructed and filled retaining wall supporting gas column has weak static pressure resistance of the filling body and higher risk of the whole collapse of the filling body.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provide the air bag type retaining wall for underground cemented filling, which has the advantages of high repeated utilization rate, low cost, simple structure and strong capacity of resisting the static pressure of a filling body.
The invention further aims to solve the technical problem of overcoming the defects in the prior art and provide a construction method for the air bag type retaining wall for underground cemented filling, which is simple and convenient to operate and quick to assemble and disassemble.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an air bag formula barricade for cemented filling in pit, includes gasbag, valve, metal chain net and reinforcing rope net, the gasbag is the enclosure space body that flexible material made, the valve is connected with the gasbag through disk seat or pipe on locating the gasbag wall, and at bottom plate, tunnel wall and the vault department symmetry ground anchor round metal stock in the tunnel, the end and the tunnel stock lock joint all around of metal chain net, reinforcing rope net parcel sets up one section sack package in the base angle department of tunnel bottom plate both sides.
Further, the flexible material is a rubber membrane.
Furthermore, the warp and the weft of the metal chain net are metal chains, and the ends of the warp and the weft are respectively fastened with the anchor rods on the periphery of the roadway.
Further, the interlude of gasbag is circular barrel, and both ends are oval head, adopt the mode of hot melt to connect between circular barrel and the oval head.
Further, the valve is positioned at the central point of the elliptical seal head on one side of the air bag.
The invention further solves the technical problem and adopts the technical scheme that: a construction method of an air bag type retaining wall for underground cemented filling comprises the following steps:
s1, shaping the roadway at the position of the retaining wall before cemented filling to ensure that the surface of surrounding rocks around the roadway is as smooth as possible without sudden change, and symmetrically anchoring a circle of anchor rods around the roadway according to the static pressure analysis of the retaining wall and the mechanical characteristics of the surrounding rocks;
s2, arranging a section of sack bag at the bottom corners of two sides of the roadway bottom plate, wherein the overall appearance of the stacked sack bags is matched with the shape of the deformed air bag;
s3, mounting an air bag and a valve to wrap the reinforcing rope net on the air bag;
s4, connecting a valve with a compressed air pipeline and a water supply pipeline under a well respectively, filling liquid with an air bag volume of 1/3-2/3 into the air bag, then filling gas into the air bag, and keeping the pressure to keep the air bag in an expansion state;
s5, buckling a metal chain net at the end of the anchor rod, and completing the preparation work before filling;
and S6, after filling, disassembling the retaining wall when the filling body is solidified to reach the designed strength. The disassembled retaining wall can be used repeatedly.
Compared with the prior art, the invention fully utilizes the friction force between the outer wall of the air bag and the wall of the roadway and the gunny bag to resist the lateral static pressure generated by the filling body, thereby completing the integral sealing of the section of the filled roadway. The axial space of the air bag is extruded by utilizing the static pressure generated by the filling body on the air bag and the blocking effect of the metal chain net, so that the circumference of the air bag expands outwards in the radial direction, the outer wall of the air bag is tightly attached to the wall of the roadway, and the friction force between the air bag and the wall of the roadway is increased while the grout leakage and the grout leakage are prevented. A part of liquid is pre-filled in the air bag, so that the friction force is increased by increasing the self weight of the air bag, and the anchorage property of the air bag is effectively enhanced. After the liquid is filled, the volume of the gas phase space is reduced, and the risk of the self-explosion of the air bag is reduced. The reinforcing rope net can prevent the local deformation of the air bag from being overlarge, so that the overall stress distribution is more reasonable, and meanwhile, the protection safety of the outer surface of the air bag is also enhanced.
The invention greatly reduces the consumption of construction consumables, greatly shortens the construction period and lightens the labor intensity of construction workers; the retaining wall is simple in structure, few in components, high in repeated utilization rate, low in manufacturing cost, simple and convenient to operate, fast to disassemble and assemble and high in engineering practicability.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a view from direction A-A of the embodiment of FIG. 1 of the present invention.
In the figure: 1. the device comprises an air bag, 2, a valve, 3, a metal chain net, 4, a gunny bag, 5, an anchor rod, 6 and a reinforcing rope net.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1-2, this embodiment includes gasbag 1, valve 2, metal chain net 3 and reinforcing rope net 6, gasbag 1 is the enclosure space body that rubber materials made, valve 2 is connected with gasbag 1 through valve seat or pipe of locating on the gasbag 1 wall, anchors a round of metal stock 5 symmetrically at bottom plate, tunnel wall and the vault of tunnel, and stock 5 tip is bent into hook-like, the end of metal chain net 3 and the stock 5 lock joint around the tunnel, reinforcing rope net 6 parcel is at gasbag 1 surface, sets up one section sack 4 package in the base angle department of tunnel bottom plate both sides, and the sack is 4 and is filled with the soil in.
In this embodiment, the warp and the weft of the metal chain net 3 are metal chains, and the ends of the warp and the weft are respectively fastened with the anchor rods 5 around the roadway.
In this embodiment, the interlude of gasbag 1 is circular barrel, and both ends are oval head, adopt the mode of hot melt to connect between circular barrel and the oval head.
In this embodiment, the valve 2 is located at the center of the elliptical seal head on one side of the airbag 1.
In this embodiment, the reinforcing mesh 6 is woven from non-metallic material ropes, such as nylon ropes, and wraps the outer surface of the airbag 1, and a deformation space is reserved.
The construction method of the air bag type retaining wall for underground cemented filling in the embodiment comprises the following steps:
s1, shaping the roadway at the position of the retaining wall before cemented filling to ensure that the surface of surrounding rocks around the roadway is as smooth as possible without sudden change, and symmetrically anchoring a circle of anchor rods 5 around the roadway according to the static pressure analysis of the retaining wall and the mechanical characteristics of the surrounding rocks;
s2, arranging a section of sack bag 4 at the bottom corners of two sides of the roadway bottom plate, wherein the overall appearance of the stacked sack bags 4 is matched with the shape of the deformed air bag;
s3, installing the air bag 1 and the valve 2, and wrapping the reinforcing rope net 6 on the air bag;
s4, connecting a valve with a compressed air pipeline and a water supply pipeline under the well respectively, filling liquid with an air bag volume of 1/3-2/3 into the air bag 2, then filling gas into the air bag, and keeping the pressure;
s5, buckling a metal chain net 3 at the end of the anchor rod 5, and completing the preparation work before filling;
and S6, after filling, when the filling body is solidified to reach the designed strength, disassembling and displacing the retaining wall.
When disassembly and displacement operations are carried out, the valve 2 is opened, the air bag 1 is deflated and depressurized, then the shape is contracted, and the outer wall of the air bag 1 is automatically separated from the filling body and the roadway wall; releasing the buckling connection between the metal chain net 3 and the anchor rod 2, and finishing the holding of the metal chain net 3; further releasing the gas and liquid in the air bag 1, loosening the reinforcing rope net 6 and simultaneously completing the storage of the air bag 1 and the reinforcing rope net 6; and finally, the air bag 1, the valve 2, the metal chain net 3, the gunny bag 4 and the reinforcing rope net 6 are transported together for the next operation.
Various modifications and variations of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (6)
1. The utility model provides a construction method of gasbag formula barricade for cemented filling in pit, includes gasbag, valve, metal chain net and reinforcing rope net, the gasbag is the enclosure space body of being made by flexible material, the valve passes through disk seat or pipe and is connected with the gasbag, at bottom plate, tunnel wall and the vault department symmetry anchor round metal stock in the tunnel, the end and the tunnel stock lock joint all around of metal chain net, reinforcing rope net parcel is at the gasbag surface, sets up one section sack package in the base angle department of tunnel bottom plate both sides, its characterized in that: the method comprises the following steps:
s1, shaping the roadway at the position of the retaining wall before cemented filling to ensure that the surface of surrounding rocks around the roadway is as smooth as possible without sudden change, and symmetrically anchoring a circle of anchor rods around the roadway according to the static pressure analysis of the retaining wall and the mechanical characteristics of the surrounding rocks;
s2, arranging a section of sack bag at the bottom corners of two sides of the roadway bottom plate, wherein the overall appearance of the stacked sack bags is matched with the shape of the deformed air bag;
s3, mounting an air bag and a valve to wrap the reinforcing rope net on the air bag;
s4, connecting a valve with a compressed air pipeline and a water supply pipeline underground respectively, filling liquid with an air bag volume of 1/3-2/3 into the air bag, then filling gas into the air bag, and keeping pressure;
s5, buckling a metal chain net at the end of the anchor rod, and completing the preparation work before filling;
and S6, after filling, when the filling body is solidified to reach the designed strength, performing displacement operation on the retaining wall.
2. The method of constructing a downhole cemented-filling air-bag-type retaining wall according to claim 1, wherein: the flexible material is rubber.
3. The method for constructing a pneumatic wall for underground cementitious filling according to claim 1 or 2, wherein: the warp and the weft of the metal chain net are metal chains, and the ends of the warp and the weft are respectively fastened with the anchor rods on the periphery of the roadway.
4. The method for constructing a pneumatic wall for underground cementitious filling according to claim 1 or 2, wherein: the middle section of the air bag is a circular cylinder, the two ends of the air bag are oval end sockets, and the circular cylinder, the circular cylinder and the oval end sockets are connected in a hot melting mode.
5. The method of constructing a downhole cemented-filling air-bag-type retaining wall according to claim 3, wherein: the middle section of the air bag is a circular cylinder, the two ends of the air bag are oval end sockets, and the circular cylinder, the circular cylinder and the oval end sockets are connected in a hot melting mode.
6. The method of constructing a downhole cemented-filling air-bag-type retaining wall according to claim 4, wherein: the valve is positioned at the central point of the elliptical seal head on one side of the air bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474633.1A CN111502751B (en) | 2020-05-29 | 2020-05-29 | Air bag type retaining wall for underground cemented filling and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010474633.1A CN111502751B (en) | 2020-05-29 | 2020-05-29 | Air bag type retaining wall for underground cemented filling and construction method |
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| CN111502751A CN111502751A (en) | 2020-08-07 |
| CN111502751B true CN111502751B (en) | 2021-11-09 |
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| CN113756850B (en) * | 2021-09-18 | 2023-03-31 | 同济大学 | Assembled type water filling inclined support locking port pipe coupling air bag type tunnel face water retaining wall |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6509990A (en) * | 1989-10-25 | 1991-05-31 | Fosroc International Limited | A method of sealing an opening |
| CN201934141U (en) * | 2010-11-11 | 2011-08-17 | 兖州煤业股份有限公司 | Mining assembly-type laneway plugging airbag |
| CN106121722A (en) * | 2016-06-25 | 2016-11-16 | 扬州中矿建筑新材料科技有限公司 | A kind of method quickly constructing fire dam |
| CN106837418A (en) * | 2016-12-28 | 2017-06-13 | 中国矿业大学 | A kind of trapezoidal fire dam of mine anti-explosion and its construction method |
| CN206360720U (en) * | 2016-11-29 | 2017-07-28 | 金诚信矿业管理股份有限公司 | A kind of novel flexible filling isolation barricade |
| CN107448232A (en) * | 2017-08-18 | 2017-12-08 | 西北矿冶研究院 | Retaining wall device for open-field subsequent cemented filling |
| CN109723490A (en) * | 2019-01-22 | 2019-05-07 | 福州大学 | A kind of filling counterfort and its construction method for underground metal mine |
| CN110454220A (en) * | 2019-08-07 | 2019-11-15 | 中国恩菲工程技术有限公司 | Assembled reusable flexible filling barricade |
-
2020
- 2020-05-29 CN CN202010474633.1A patent/CN111502751B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6509990A (en) * | 1989-10-25 | 1991-05-31 | Fosroc International Limited | A method of sealing an opening |
| CN201934141U (en) * | 2010-11-11 | 2011-08-17 | 兖州煤业股份有限公司 | Mining assembly-type laneway plugging airbag |
| CN106121722A (en) * | 2016-06-25 | 2016-11-16 | 扬州中矿建筑新材料科技有限公司 | A kind of method quickly constructing fire dam |
| CN206360720U (en) * | 2016-11-29 | 2017-07-28 | 金诚信矿业管理股份有限公司 | A kind of novel flexible filling isolation barricade |
| CN106837418A (en) * | 2016-12-28 | 2017-06-13 | 中国矿业大学 | A kind of trapezoidal fire dam of mine anti-explosion and its construction method |
| CN107448232A (en) * | 2017-08-18 | 2017-12-08 | 西北矿冶研究院 | Retaining wall device for open-field subsequent cemented filling |
| CN109723490A (en) * | 2019-01-22 | 2019-05-07 | 福州大学 | A kind of filling counterfort and its construction method for underground metal mine |
| CN110454220A (en) * | 2019-08-07 | 2019-11-15 | 中国恩菲工程技术有限公司 | Assembled reusable flexible filling barricade |
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| CN111502751A (en) | 2020-08-07 |
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