CN113982684A - Combined auxiliary roof connecting device and method for rapid closure of water passing roadway - Google Patents
Combined auxiliary roof connecting device and method for rapid closure of water passing roadway Download PDFInfo
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- CN113982684A CN113982684A CN202111286292.6A CN202111286292A CN113982684A CN 113982684 A CN113982684 A CN 113982684A CN 202111286292 A CN202111286292 A CN 202111286292A CN 113982684 A CN113982684 A CN 113982684A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 117
- 239000010959 steel Substances 0.000 claims abstract description 117
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 6
- 238000003892 spreading Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 10
- 239000003245 coal Substances 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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Classifications
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- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
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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)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention relates to a combined auxiliary top-contacting device and a method for rapid closure of a water passing roadway. The aggregate interception grating is fixed on the cross section of the roadway and consists of a channel steel frame, a steel wire mesh, an anchor rod and an anchor cable; the roadway top auxiliary roof-contacting grid is suspended on an upstream roadway top plate and consists of a steel wire mesh, connecting steel bars, counterweight steel bars, anchor rods and anchor cables; the method of the cooperative work of the two parts of structures is adopted to assist the aggregate to be quickly connected to the top, and the technical problem that the aggregate pouring process is uncontrollable is solved. The device has a simple structure, saves space, quickens the construction progress of a water-blocking wall construction project at an aggregate pouring stage, improves the stability of an accumulation section, and plays a key role in rescuing water inrush accidents in coal mines.
Description
Technical Field
The invention belongs to the technical field of post-disaster treatment of water damage of coal mines, and particularly relates to a combined auxiliary roof connecting device and method for rapid closure of a water passing roadway.
Background
After the mine is flooded by sudden water, the hydraulic connection between the water source and the mine is cut off by adopting a flowing water interception method, and the method is an important method for realizing rapid rescue and recovery. The process of flowing water closure is that aggregates with different grain diameters are poured from the ground in a flowing water tunnel, the aggregates are moved and stacked in the tunnel until the aggregates are abutted to the top to form a water blocking effect, and finally the tunnel is completely blocked by grouting reinforcement.
The process of moving water closure has requirements on construction period and construction quality, in the actual construction process, because the accumulation condition of aggregate in a roadway is hidden and invisible, a large amount of invalid perfusion conditions often exist, the aggregate is continuously washed to the far end of the downstream, mine equipment is submerged, a roadway system is buried, later-stage dredging is difficult, and secondary property loss is formed. In addition, the uncontrolled aggregate pouring process also results in long construction period and high cost, and the aims of rapid closure and rescue and ore recovery cannot be fulfilled.
In order to reduce aggregate outflow, the conventional method is to construct a temporary water retaining wall at a high position at the downstream of a water retaining wall construction section in an emergency, and the method is characterized by long construction period, low pressure resistance, easy bursting and incapability of ensuring the aggregate outflow control effect.
Disclosure of Invention
Aiming at the technical problems, the invention provides a combined auxiliary top-contacting device and a combined auxiliary top-contacting method for rapid closure of a water passing roadway.
In order to achieve the purpose, the scheme of the invention is as follows:
a supplementary top mounted putting that connects of combination formula for crossing quick damming of water tunnel includes:
an aggregate interception grid comprising: the intercepting grid steel wire mesh is retractable and fixed on the roadway through anchor cables and/or anchor rods and a frame;
supplementary overhead grid includes: the net diameter of the top-connected grid steel wire woven net is larger than that of the interception grid steel wire woven net; the top and the bottom of each top-connected grid steel wire mesh are respectively connected through connecting steel bars and counterweight steel bars; the top-connected grid steel wire mesh is fixed on the roadway top plate in a retractable manner through anchor cables and/or anchor rods.
Preferably, the combined auxiliary top contacting device for rapid closure of the water passing roadway comprises an aggregate intercepting grid, wherein the aggregate intercepting grid comprises: a frame; the frame is fixed on the roadway top plate, the roadway bottom plate and the roadway side wall, and the interception grid steel wire mesh is fixed on the frame through an anchor cable and/or an anchor rod.
Preferably, the combined auxiliary top connection device for rapid closure of the water passing roadway comprises a plurality of steel wire woven meshes, wherein the top, the bottom and the side part of the first interception grid steel wire woven mesh are respectively fixed on a roadway top plate, a roadway bottom plate and a roadway side wall in a retractable manner through anchor cables and/or anchor rods and a frame; the tops of the other top-connected grid steel wire woven meshes are fixed on a roadway top plate through anchor cables and/or anchor rods, the side parts and the bottoms of the top-connected grid steel wire woven meshes are in a natural suspension state, and the top-connected grid steel wire woven meshes are connected through balance weight steel bars at the bottoms to be synchronously retracted and extended.
Preferably, the above-mentioned a supplementary top mounted device of combination formula for crossing quick damming in water tunnel, interception grid steel wire netting and/or top mounted grid steel wire netting weave through the steel strand wires, and each steel strand wires passes through the buckle and connects.
Preferably, the diameter of the aggregate interception grid steel wire mesh is 5-10mm, and the diameter of the roadway top auxiliary roof-contacting grid steel wire mesh is 20-30 mm.
A combined auxiliary roof connecting method for rapid closure of a water passing roadway comprises the following steps:
installing an aggregate interception grid at the downstream of a section where a water-blocking wall is to be built, wherein the aggregate interception grid comprises an interception grid steel wire mesh, and the interception grid steel wire mesh is fixed on a roadway in a retractable manner through an anchor cable and/or an anchor rod and a frame;
installing a roadway roof auxiliary roof contacting grid upstream of the aggregate intercepting grid, the auxiliary roof contacting grid comprising: the net diameter of the top-connected grid steel wire woven net is larger than that of the interception grid steel wire woven net; the top and the bottom of each top-connected grid steel wire mesh are respectively connected through connecting steel bars and counterweight steel bars; the roof-connected grid steel wire mesh is fixed on a roadway roof in a retractable manner through anchor cables and/or anchor rods;
after water inrush, spreading the interception grid wire mesh and/or the roof-contacting grid wire mesh to intercept aggregate and/or roof contacting.
Preferably, in the combined auxiliary roof connecting method for rapid closure of the water passing roadway, the distance between the bottom of the expanded roof connecting grating steel wire mesh and the roadway roof is smaller than the distance between the bottom of the expanded intercepting grating steel wire mesh and the roadway roof.
Preferably, in the above combined auxiliary roof connecting method for rapid closure of a water passing roadway, the steel wire mesh of the roof connecting grid is arranged in the range of 20-50 meters upstream of the steel wire mesh of the intercepting grid.
Compared with the prior art, the invention has the advantages that:
1) the invention has reliable technical principle, and ensures the controllability of the aggregate pouring process by adopting the cooperative work of the combined device. The aggregate interception grating plays a role in intercepting aggregates during normal pouring; under the action of the gravity of the counterweight steel bars, the roadway top auxiliary top-contacting grating gradually sinks into the aggregate along with the stacking process, and the coarse aggregate is gradually embedded between meshes to form a skeleton effect, so that the anti-scouring capability of the top stacking body is improved, and the rapid top-contacting effect is achieved; the combined device is not excessive in water passing through aggregate, low in borne dynamic water load and reliable in performance, and the defect that the instability risk exists due to the fact that a temporary water retaining wall needs to bear pressure is overcome.
2) The invention has low manufacturing cost, the used materials and accessories are common mine materials, the installation process is simple, 2-3 workers can quickly complete the installation process by matching, the installation period can be completed within 1-2 days, and the installation can be implemented during the tunneling construction period, thereby avoiding the problems of time pressing for establishing the temporary water retaining wall after water inrush and difficult quality guarantee.
3) The steel wire netting used by the combined device is woven by steel strands, has the characteristic of flexibility and folding, is in a folded state during non-working period, does not occupy a large amount of roadway space, and can be quickly unfolded to enter a working state after water inrush.
Drawings
FIG. 1 is a schematic longitudinal sectional view of the apparatus of the present invention
FIG. 2 is a cross-sectional view of the device of the present invention
FIG. 3 is a schematic view of the structure of a steel wire mesh used in the present invention
FIG. 4 is a schematic view of the construction of a rock bolt or anchor cable used in the present invention
Wherein: 1. anchor cables, a channel steel frame 2, an anchor rod 3, a steel wire rope 4, a roadway top plate 5, a roadway bottom plate 6, connecting steel bars 7, counterweight steel bars 8, a roadway side wall 9, a steel wire mesh 10, steel stranded wires 11, bayonets 12, horseshoe knots 13, nuts 14, a tray 15 and drill holes 16.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
analyzing hydrogeological conditions, researching a water passing path after water inrush occurs during excavation, determining the optimal roadway position for building the water blocking wall, selecting sections with complete coal rocks on the top plate of the roadway, the bottom plate of the roadway and the side wall of the roadway as far as possible and no branch roadway, and ensuring enough section length.
Referring to fig. 1, a schematic view of a combined auxiliary roof connecting device for rapid closure of a water tunnel according to an embodiment of the present invention is shown. The device comprises 1 set of aggregate interception grids and 5-10 sets of roadway top auxiliary top-contacting grids, and the size of the components is matched with the size of the section of a roadway.
The combined auxiliary top-contacting device consists of an aggregate interception grid and a roadway top auxiliary top-contacting grid. The aggregate interception grating is fixed on the roadway top plate, the roadway bottom plate and the roadway side wall through the anchor cable, the anchor rod and the steel wire rope, and the roadway top auxiliary roof-contacting grating is fixed on the roadway top plate through the anchor cable and the anchor rod.
The materials and specifications of the custom assembly are as follows: channel steel of 20a type or higher, the length of which is 20-30cm greater than the length, width and height of a roadway, and the channel steel is embedded into the inner wall of the roadway; anchor rods, anchor cables, nuts and trays, wherein the length of the anchor rods is 1.5-2.5m, and the length of the anchor cables is 4-6 m; wire ropes and steel bars, wherein the diameter of each wire rope is 8-10mm, the diameter of each connecting steel bar is 8-12mm, and the diameter of each counterweight steel bar is 20-30 mm; and fourthly, customizing steel wire woven meshes, weaving by adopting 8-12mm steel strands, connecting by using a bayonet, matching the size of the interception grille steel wire woven mesh with the frame, and slightly reducing the length of the roof-connected grille steel wire woven mesh to be less than the width of the roadway and the height of the roof-connected grille steel wire woven mesh to be 30 cm.
The top bottom plate and the lateral oblique-pulling anchor cables of the fixed aggregate intercepting grid are horizontally spaced by 100cm, the vertical upper anchor cables or anchor rods are arranged at intervals, and the vertical spacing is 60-70 cm. The lane top auxiliary roof-contacting grids are installed in parallel, each group comprises 8 meshes, the interval between the meshes is 25cm, and the length of the lane controlled by each group of meshes is about 2 m.
The following describes a combined auxiliary roof connecting method for rapid closure of a water tunnel according to this embodiment with reference to fig. 1 to 4. The method comprises the following steps:
1) analyzing hydrogeological conditions, researching a water passing path after water inrush occurs during excavation, determining the optimal roadway position for building the water blocking wall, selecting sections with complete coal rocks on the top plate of the roadway, the bottom plate of the roadway and the side wall of the roadway as far as possible and no branch roadway, and ensuring enough section length.
2) The components of the combined auxiliary top-contacting device customized on the ground comprise 1 set of aggregate interception grids and 5-10 sets of roadway top auxiliary top-contacting grids, and the size of the components is matched with the size of the section of a roadway.
3) Installing an aggregate interception grid 1 sleeve at the downstream of a section where a water-blocking wall is to be built, and arranging an inclined steel wire rope at the water inlet end of a roadway, wherein the installed aggregate interception grid and the periphery of the roadway are positioned on the same plane; 5-10 sets of lane top auxiliary top-contacting grids are arranged in the range of 20-50m upstream of the aggregate interception grid; the steel wire mesh is in a folded state before water burst, and is in a working state after being rapidly unfolded after water burst.
The combined auxiliary top-contacting device in the step 2) consists of an aggregate interception grid and a roadway top auxiliary top-contacting grid. The aggregate interception grating is fixed on the roadway top plate, the roadway bottom plate and the roadway side wall through the anchor cable, the anchor rod and the steel wire rope, and the roadway top auxiliary roof-contacting grating is fixed on the roadway top plate through the anchor cable and the anchor rod. The steel wire mesh of the two-part device is in a folded state before water inrush, does not occupy the space of a roadway, and is rapidly unfolded to be in a working state after water inrush
The aggregate intercepting grid in the step 2) is composed of a channel steel frame and a steel wire woven net, and the steel wire woven net is fixed through a reserved hook on the reserved channel steel frame.
The roadway top auxiliary roof-contacting grid in the step 2) is composed of steel wire woven meshes, connecting steel bars and counterweight steel bars, the steel wire woven meshes are arranged in parallel at an interval of 25cm, the tops of the steel wire woven meshes are connected in series through 5-6 connecting steel bars, and the bottoms of the steel wire woven meshes are connected in series through 5-6 counterweight steel bars.
The channel steel frame in the steps 2) and 3) is formed by splicing 4 pieces of 20 a-shaped channel steel, the length of the channel steel is 20-30cm larger than the size of a roadway, reserved hole positions are fixed through anchor cables or anchor rods, and the distance between the reserved holes is 60-70 cm; the steel wire mesh is woven by 8-12mm steel strands, the steel wire mesh is connected by a bayonet, the mesh diameter of the aggregate interception grid steel wire mesh is 5-10mm, and the mesh diameter of the roadway roof auxiliary roof connecting grid steel wire mesh is 20-30 mm; the length of the anchor rods is 1.5-2.5m, the diameter of the anchor rods is 18-20mm, and the row spacing is 60-70 cm; the length of the anchor cable is 4-6m, the diameter of the anchor cable is 20-30mm, and the row spacing is 100 cm; the diameter of the steel wire rope is 8-10mm, the diameter of the connecting steel bar is 8-12mm, and the diameter of the counterweight steel bar is 20-30 mm.
The installation process can be completed before stoping of the working face, components of the combined device except the anchor rod and the anchor cable can be disassembled and recycled after stoping of the working face, and the method can be popularized and implemented as a common disaster-resistant means for threatening mine water inrush.
Claims (8)
1. The utility model provides a supplementary top mounted putting that connects of combination formula that is used for crossing quick damming of water tunnel which characterized in that includes:
an aggregate interception grid comprising: the intercepting grid steel wire mesh is retractable and fixed on the roadway through an anchor cable (1) and/or an anchor rod (3) and a frame (2);
supplementary overhead grid includes: the net diameter of the top-connected grid steel wire woven net is larger than that of the interception grid steel wire woven net; the top and the bottom of each top-connected grid steel wire mesh are respectively connected through connecting steel bars (7) and counterweight steel bars (8); the roof-connected grid steel wire mesh is fixed on a roadway roof (5) in a retractable manner through anchor cables (1) and/or anchor rods (3).
2. The combined auxiliary roof connecting device for the rapid interception of the water passing roadway according to claim 1 is characterized by comprising an aggregate intercepting grid, wherein the aggregate intercepting grid comprises: a frame; the frame is fixed on a roadway top plate (5), a roadway bottom plate (6) and a roadway side wall (9), and the interception grid steel wire mesh is fixed on the frame through an anchor cable (1) and/or an anchor rod (3).
3. The combined auxiliary top-receiving device for the rapid interception of the water laneway is characterized by comprising a plurality of steel wire woven meshes, wherein the top, the bottom and the side part of the first interception grid steel wire woven mesh are respectively fixed on a laneway top plate (5), a laneway bottom plate (6) and a laneway side wall (9) in a retractable manner through an anchor cable (1) and/or an anchor rod (3) and a frame (2); the tops of the rest top-connected grid steel wire woven meshes are fixed on a roadway roof (5) through anchor cables (1) and/or anchor rods (3), the side parts and the bottoms of the top-connected grid steel wire woven meshes are in a natural suspension state, and the top-connected grid steel wire woven meshes are connected through balance weight steel bars (8) at the bottoms to be synchronously retracted and extended.
4. The combined auxiliary roof connecting device for the rapid intercepting of the water laneway is characterized in that the interception grid steel wire mesh and/or the roof connecting grid steel wire mesh are/is woven by steel strands (11), and the steel strands (11) are connected through buckles (12).
5. The combined type auxiliary top-contacting device for the rapid intercepting of the water passing tunnel of claim 1, wherein the diameter of the steel wire mesh of the aggregate interception grid is 5-10mm, and the diameter of the steel wire mesh of the tunnel top auxiliary top-contacting grid is 20-30 mm.
6. A combined auxiliary roof connecting method for rapid closure of a water passing roadway is characterized by comprising the following steps:
an aggregate interception grid is installed at the downstream of a section where a water-blocking wall is to be built, the aggregate interception grid comprises an interception grid steel wire mesh, and the interception grid steel wire mesh is fixed on a roadway in a retractable manner through an anchor cable (1) and/or an anchor rod (3);
installing a roadway top auxiliary top-contacting grid upstream of the aggregate intercepting grid, wherein the auxiliary top-contacting grid comprises: the net diameter of the top-connected grid steel wire woven net is larger than that of the interception grid steel wire woven net; the top and the bottom of each top-connected grid steel wire mesh are respectively connected through connecting steel bars (7) and counterweight steel bars (8); the roof-connected grid steel wire mesh is fixed on a roadway roof (5) in a retractable manner through anchor cables (1) and/or anchor rods (3);
after water inrush, spreading the interception grid wire mesh and/or the roof-contacting grid wire mesh to intercept aggregate and/or roof contacting.
7. The combined auxiliary roof-contacting method for the rapid closure of the water passing roadway according to claim 5, wherein the distance between the bottom of the expanded roof-contacting grid steel wire mesh and the roadway roof (5) is smaller than the distance between the bottom of the expanded intercepting grid steel wire mesh and the roadway roof (5).
8. The combined auxiliary top-meeting method for the rapid intercepting of the water laneway is characterized in that the top-meeting grid steel wire mesh is arranged in the range of 20-50 meters upstream of the intercepting grid steel wire mesh.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111286292.6A CN113982684B (en) | 2021-11-02 | 2021-11-02 | Combined auxiliary roof connecting device and method for rapid closure of water passing tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111286292.6A CN113982684B (en) | 2021-11-02 | 2021-11-02 | Combined auxiliary roof connecting device and method for rapid closure of water passing tunnel |
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| CN113982684A true CN113982684A (en) | 2022-01-28 |
| CN113982684B CN113982684B (en) | 2023-10-27 |
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