CN208252138U - A kind of natural caving method bottom structure two-ended cables and combining anchor support system - Google Patents
A kind of natural caving method bottom structure two-ended cables and combining anchor support system Download PDFInfo
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- CN208252138U CN208252138U CN201820766079.2U CN201820766079U CN208252138U CN 208252138 U CN208252138 U CN 208252138U CN 201820766079 U CN201820766079 U CN 201820766079U CN 208252138 U CN208252138 U CN 208252138U
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- anchor cable
- anchor
- concrete layer
- bottom structure
- caving method
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Abstract
The utility model discloses a kind of natural caving method bottom structure two-ended cables and combining anchor support system, one end of first anchor cable is located in discharging tunnel, the other end of first anchor cable is inserted into across peach-shaped ore pillar and undercuts in tunnel, one end of second anchor cable is located in discharging tunnel, the other end of second anchor cable is inserted in peach-shaped ore pillar, the first concrete layer is injected on the top of discharging tunnel and side wall, it is provided with the first steel mesh in first concrete layer, is provided with third anchor cable between the adjacent tunnel that undercuts；Inserted with several anchor poles on the side wall of ore removal inclined gallery, the second concrete layer is injected on the inner wall of ore removal inclined gallery, single layer reinforced concrete floor has been poured on second concrete layer, wherein, it is provided with the second steel mesh in the second concrete layer, which can be realized the supporting to natural caving method bottom structure, and supporting expense is low, supporting effect is obvious, while smaller to the destruction of peach-shaped ore body and discharging tunnel and convenient for safeguarding.
Description
Technical field
The utility model relates to a kind of support systems, and in particular to a kind of natural caving method bottom structure two-ended cables and anchor
Bar combined support system.
Background technique
Natural caving method is a kind of mining methods with low cost on a large scale, is widely used in opening for big thick ore body
It adopts, especially those special thick big, low-grade ore bodies, production capacity is big, convenient for organization and administration, operation safety, cost of winning
It is low, it is the efficient underground mining method that can uniquely match in excellence or beauty with strip mining transformation economic benefit, but natural caving method generally selects
The mine section that joint fissure reaches full growth, mining intensity is big, middle section back production year limit for length, and bottom structure is chronically at complicated NOL ring
Under border, bottom structure is easily destroyed, and needs to carry out strengthening supporting to bottom structure.Existing support pattern not only maintenance expense
It is also not the destruction it is obvious that especially peach-shaped ore body and discharging tunnel with the effect of height, acquirement, takes conventional support pattern
It is difficult to safeguard its stabilization.Therefore, a kind of new reliable support pattern is selected to be necessary.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of natural caving method bottom knot
Structure two-ended cables and combining anchor support system, which can be realized the supporting to natural caving method bottom structure, and prop up
Shield expense is low, and supporting effect is obvious, while smaller to the destruction of peach-shaped ore body and discharging tunnel and convenient for safeguarding.
In order to achieve the above objectives, natural caving method bottom structure two-ended cables described in the utility model and combining anchor branch
Protecting system includes the first anchor cable and the second anchor cable, wherein discharging tunnel, peach-shaped mine are provided in natural caving method bottom structure
Column, ore removal inclined gallery and several tunnels that undercut；
One end of first anchor cable is located in discharging tunnel, and the other end of the first anchor cable passes through peach-shaped ore pillar and is inserted into the lane that undercuts
In road, one end of the second anchor cable is located in discharging tunnel, and the other end of the second anchor cable is inserted in peach-shaped ore pillar, discharging tunnel
Be injected with the first concrete layer on top and side wall, be provided with the first steel mesh in the first concrete layer, it is adjacent undercut tunnel it
Between be provided with third anchor cable；
Inserted with several anchor poles on the side wall of ore removal inclined gallery, it is injected with the second concrete layer on the inner wall of ore removal inclined gallery,
Single layer reinforced concrete floor is poured on two concrete layers, wherein the second steel mesh is provided in the second concrete layer.
One end on the both ends of first anchor cable, the both ends of third anchor cable and the second anchor cable positioned at discharging tunnel is respectively provided with
There is anchor cable backing plate.
Steel arch-shelf is provided between second concrete layer and single layer reinforced concrete floor, wherein the side of steel arch-shelf is located at
In second concrete layer, the other side of steel arch-shelf is located in single layer reinforced concrete floor.
Anchor cable backing plate is the Q235 square steel plate with a thickness of 20mm.
The length and width of anchor cable backing plate are respectively B1 and B2, and the maximum anchor force on anchor cable backing plate length direction is greater than etc.
In the bearing capacity that rock mass allows, B2 >=(B1+d)/2, wherein d is the diameter of corresponding anchorage.
Anchor pole is grouting rock bolt.
Steel arch-shelf is H profile steel, i shaped steel or U-shaped steel.
First steel mesh and the second steel mesh be all made of diameter be 6.5mm reinforcement fabrication form, and the first steel mesh and
The net degree of second steel mesh is 150mm × 150mm；
The material of first concrete layer and the second concrete layer is C25~C30 concrete, the first concrete layer and second
The thickness of concrete layer is 100-150mm.
The utility model has the following beneficial effects:
Natural caving method bottom structure two-ended cables described in the utility model are specifically being grasped with combining anchor support system
When making, based on anchor cable and anchor pole, with shotcrete layer and carry out combined supporting supplemented by single layer reinforced concrete floor is poured,
The support form that tradition is passively pressurized is changed to the support form of active pressure-bearing, realizes the branch to natural caving method bottom structure
Shield, support cost is low, and supporting effect is obvious, while small to the destruction of peach-shaped ore body and discharging tunnel, convenient for safeguarding, and supporting
Operate relatively simple, practicability is extremely strong.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the supporting schematic diagram of discharging tunnel 2 in the utility model；
Fig. 3 is the sectional view in the direction A-A in Fig. 2；
Fig. 4 is the sectional view that Fig. 3 is the direction B-B；
Fig. 5 is the structural schematic diagram of the first anchor cable 3.
Wherein, 1 it is peach-shaped ore pillar, 2 be discharging tunnel, 3 is that the first anchor cable, 4 for the tunnel that undercuts, 5 are anchor cable backing plate, 6 are
Anchor pole, 7 be the second steel mesh, 8 be the second concrete layer, 9 be ore removal inclined gallery, 10 be steel arch-shelf, 11 be single layer armored concrete
Layer.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
Referring to figs. 1 to Fig. 5, natural caving method bottom structure two-ended cables described in the utility model and combining anchor supporting
System includes the first anchor cable 3 and the second anchor cable, wherein discharging tunnel 2, peach-shaped ore pillar are provided in natural caving method bottom structure
1, ore removal inclined gallery 9 and several tunnels 4 that undercut；One end of first anchor cable 3 is located in discharging tunnel 2, and the other end of the first anchor cable 3 is worn
It crosses peach-shaped ore pillar 1 and is inserted into and undercut in tunnel 4, one end of the second anchor cable is located in discharging tunnel 2, and the other end of the second anchor cable is inserted
Enter in peach-shaped ore pillar 1, the first concrete layer, setting in the first concrete layer are injected on the top of discharging tunnel 2 and side wall
There is the first steel mesh, is provided with third anchor cable between the adjacent tunnel 4 that undercuts；Inserted with several anchor poles on the side wall of ore removal inclined gallery 9
6, the second concrete layer 8 is injected on the inner wall of ore removal inclined gallery 9, has poured single layer reinforced concrete floor on the second concrete layer 8
11, wherein the second steel mesh 7 is provided in the second concrete layer 8.
One end on the both ends of first anchor cable 3, the both ends of third anchor cable and the second anchor cable positioned at discharging tunnel 2 is all provided with
It is equipped with anchor cable backing plate 5；Steel arch-shelf 10 is provided between second concrete layer 8 and single layer reinforced concrete floor 11, wherein steel arch-shelf
10 side is located in the second concrete layer 8, and the other side of steel arch-shelf 10 is located in single layer reinforced concrete floor 11.
Anchor cable backing plate 5 is the Q235 square steel plate with a thickness of 20mm；The length and width of anchor cable backing plate 5 be respectively B1 and
B2, the maximum anchor force on 5 length direction of anchor cable backing plate are more than or equal to the bearing capacity that rock mass allows, B2 >=(B1+d)/2, wherein
D is the diameter of corresponding anchorage.
Anchor pole 6 is grouting rock bolt；Steel arch-shelf 10 is H profile steel, i shaped steel or U-shaped steel；First steel mesh and the second steel
Muscle net 7 be all made of diameter be 6.5mm reinforcement fabrication form, and the net degree of the first steel mesh and the second steel mesh 7 be 150mm ×
150mm；The material of first concrete layer and the second concrete layer 8 is C25~C30 concrete, the first concrete layer and second
The thickness of concrete layer 8 is 100-150mm.
When carrying out the installation of the first anchor cable 3, the second anchor cable and third anchor cable, first punches on peach-shaped ore pillar 1, then wear
Enter the first anchor cable 3, the second anchor cable and third anchor cable, then the penetration concrete slurry into hole, finally carry out anchor cable backing plate 5 and with
The installation for the anchor head that anchor cable backing plate 5 matches then carries out tensioning with jack, after reaching the prestressed 20%-30% of design,
Stretch-draw jack is unloaded, anchor cable exposed parts is cut off, then carries out the injection of concrete again.
Claims (8)
1. a kind of natural caving method bottom structure two-ended cables and combining anchor support system, which is characterized in that including the first anchor
Rope (3) and the second anchor cable, wherein it is oblique that discharging tunnel (2), peach-shaped ore pillar (1), ore removal are provided in natural caving method bottom structure
Lane (9) and several tunnels that undercut (4)；
One end of first anchor cable (3) is located in discharging tunnel (2), and the other end of the first anchor cable (3) is inserted into across peach-shaped ore pillar (1)
In to the tunnel that undercuts (4), one end of the second anchor cable is located in discharging tunnel (2), and the other end of the second anchor cable is inserted in peach-shaped mine
In column (1), it is injected with the first concrete layer on the top of discharging tunnel (2) and side wall, is provided with first in the first concrete layer
Steel mesh is provided with third anchor cable between the adjacent tunnel that undercuts (4)；
Inserted with several anchor poles (6) on the side wall of ore removal inclined gallery (9), the second concrete is injected on the inner wall of ore removal inclined gallery (9)
Layer (8) has poured single layer reinforced concrete floor (11) on the second concrete layer (8), wherein setting in the second concrete layer (8)
There are the second steel mesh (7).
2. natural caving method bottom structure two-ended cables according to claim 1 and combining anchor support system, feature
It is, one end on the both ends of first anchor cable (3), the both ends of third anchor cable and the second anchor cable positioned at discharging tunnel (2) is equal
It is provided with anchor cable backing plate (5).
3. natural caving method bottom structure two-ended cables according to claim 1 and combining anchor support system, feature
It is, steel arch-shelf (10) is provided between the second concrete layer (8) and single layer reinforced concrete floor (11), wherein steel arch-shelf
(10) side is located in the second concrete layer (8), and the other side of steel arch-shelf (10) is located in single layer reinforced concrete floor (11).
4. natural caving method bottom structure two-ended cables according to claim 2 and combining anchor support system, feature
It is, anchor cable backing plate (5) is the Q235 square steel plate with a thickness of 20mm.
5. natural caving method bottom structure two-ended cables according to claim 4 and combining anchor support system, feature
It is, the length and width of anchor cable backing plate (5) are respectively B1 and B2, and the maximum anchor force on anchor cable backing plate (5) length direction is big
In the bearing capacity for being equal to rock mass permission, B2 >=(B1+d)/2, wherein d is the diameter of corresponding anchorage.
6. natural caving method bottom structure two-ended cables according to claim 1 and combining anchor support system, feature
It is, anchor pole (6) is grouting rock bolt.
7. natural caving method bottom structure two-ended cables according to claim 3 and combining anchor support system, feature
It is, steel arch-shelf (10) is H profile steel, i shaped steel or U-shaped steel.
8. natural caving method bottom structure two-ended cables according to claim 1 and combining anchor support system, feature
Be, the first steel mesh and the second steel mesh (7) are all made of the reinforcement fabrication that diameter is 6.5mm and form, and the first steel mesh and
The net degree of second steel mesh (7) is 150mm × 150mm；
The material of first concrete layer and the second concrete layer (8) is C25~C30 concrete, the first concrete layer and second
The thickness of concrete layer (8) is 100-150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820766079.2U CN208252138U (en) | 2018-05-22 | 2018-05-22 | A kind of natural caving method bottom structure two-ended cables and combining anchor support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820766079.2U CN208252138U (en) | 2018-05-22 | 2018-05-22 | A kind of natural caving method bottom structure two-ended cables and combining anchor support system |
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| CN208252138U true CN208252138U (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820766079.2U Expired - Fee Related CN208252138U (en) | 2018-05-22 | 2018-05-22 | A kind of natural caving method bottom structure two-ended cables and combining anchor support system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111411978A (en) * | 2020-03-31 | 2020-07-14 | 昆明理工大学 | Clamping plate type supporting structure for adjacent ore removal roadways and construction process thereof |
| CN111980707A (en) * | 2020-09-16 | 2020-11-24 | 昆明理工大学 | Method for reinforcing fault broken zone bottom column by natural caving method |
-
2018
- 2018-05-22 CN CN201820766079.2U patent/CN208252138U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111411978A (en) * | 2020-03-31 | 2020-07-14 | 昆明理工大学 | Clamping plate type supporting structure for adjacent ore removal roadways and construction process thereof |
| CN111980707A (en) * | 2020-09-16 | 2020-11-24 | 昆明理工大学 | Method for reinforcing fault broken zone bottom column by natural caving method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181218 Termination date: 20210522 |