CN213204164U - Combined supporting structure for surface mine side slope - Google Patents
Combined supporting structure for surface mine side slope Download PDFInfo
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- CN213204164U CN213204164U CN202021774972.3U CN202021774972U CN213204164U CN 213204164 U CN213204164 U CN 213204164U CN 202021774972 U CN202021774972 U CN 202021774972U CN 213204164 U CN213204164 U CN 213204164U
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- reinforced concrete
- retaining wall
- slope
- side slope
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Abstract
The utility model relates to a combined supporting construction of surface mine side slope, a serial communication port, retaining wall, the outer retaining wall of reinforced concrete, a plurality of reinforcing stock and rubble overburden in the reinforced concrete, the reinforced concrete is interior, outer retaining wall passes through the bottom of concrete foundation layer setting at the surface mine side slope, it has the several to consolidate the stock mounting hole to bore along surface mine side slope bottom slope, a plurality of reinforcing stock one end slopes to insert in consolidating the stock mounting hole, the reinforcement of the retaining wall rear side in the other end and the reinforced concrete, the rear side embedding of retaining wall has little rubble concrete filling layer in the reinforced concrete, rubble overburden lower part arrange in the mine surface slope support groove-shaped base, upper portion is laid along the surface slope mine. The advantages are that: adopt the utility model discloses a combined supporting construction has strengthened the structural strength of mine side slope greatly, avoids the landslide problem, and overall stability is good moreover, has reduced the local unstability condition.
Description
Technical Field
The utility model belongs to the technical field of mine side slope support, especially, relate to a combined supporting construction of surface mine side slope.
Background
For the surface mining, most mines are mostly converted into deep open-pit mines along with the increase of mining years, so the stability of the side slope becomes a problem which cannot be ignored in the production process, and along with the common application of large aperture and large aperture network parameters in the surface mines, the stability of the side slope becomes one of important problems to be solved urgently in the surface mines, and once the side slope is unstable, landslide occurs, great loss can be caused.
At present, a slope support mode mainly adopts a mine slope support net, and various flexible nets mainly comprising steel wire rope nets are covered or wrapped on slopes or rocks to be protected so as to limit weathering spalling or damage of slope rock-soil bodies and dangerous rock collapse, and play roles of reinforcement and enclosure. However, the method still has some disadvantages, for example, the firmness of the support net is not strong, which affects the protection effect of the support on the mine side slope, and when the broken stones roll off, the side slope is easy to break due to no buffer device, and the protection needs to be replaced with new one, which results in the reduction of the use efficiency of the mine side slope support.
Disclosure of Invention
In order to solve the problems existing in the prior art, the utility model aims at providing a combined supporting structure for the side slope of the surface mine.
The utility model adopts the following technical proposal.
The utility model relates to a combined supporting structure for the side slope of an open mine, which is characterized by comprising a reinforced concrete inner retaining wall, a reinforced concrete outer retaining wall, a plurality of reinforcing anchor rods and a rubble covering layer,
the reinforced concrete inner retaining wall and the reinforced concrete outer retaining wall are arranged at the bottom of the surface mine side slope through the concrete foundation layer to form a continuous groove-shaped base supported along the surface mine side slope, a plurality of reinforcing anchor rod mounting holes are drilled in a horizontal row along the bottom of the surface mine side slope in an inclined manner, one end of each of the plurality of reinforcing anchor rods is obliquely inserted into the reinforcing anchor rod mounting hole, the other end of each reinforcing anchor rod is bound with the steel bars on the rear side of the reinforced concrete inner retaining wall, a small broken stone concrete filling layer with the edge fixedly connected with the mine side slope and the granularity less than 50mm is embedded at the rear side of the reinforced concrete inner retaining wall, the plurality of reinforcing anchor rods are fixedly connected with the reinforced concrete inner retaining wall and the mine side slope, the lower part of the gravel covering layer is arranged in the groove-shaped base of the surface mine side slope support, and the upper part of the gravel covering layer is laid along the surface mine side slope to form a triangular gravel covering layer.
As a further optimization of the utility model, the gravel granularity of the triangular gravel covering layer is 100-200 mm.
As the utility model discloses a further optimization, reinforced concrete inside retaining wall and the outer retaining wall of reinforced concrete inside set up horizontal and fore-and-aft reinforcing bar.
And a stone blocking net is also arranged at the upper part of the triangular gravel covering layer.
Compared with the prior art, the utility model has the advantages that:
because the utility model discloses an inside and outside retaining wall of reinforced concrete utilizes and draws stock reinforcing open mine side slope support's stability to one side, makes it possess sufficient rubble cling compound, adds the cooperation of rubble overburden and stone blocking net again, constitutes joint supporting construction, has strengthened the structural strength of mine side slope greatly, avoids the landslide problem, and overall stability is good moreover, has reduced the local unstability condition.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in figure 1, the utility model relates to a combined supporting structure for the side slope of the open mine, which is characterized in that the combined supporting structure comprises a reinforced concrete inner retaining wall 1, a reinforced concrete outer retaining wall 3, a plurality of reinforcing anchor rods 4 and a gravel covering layer 6,
the reinforced concrete inner retaining wall 1 and the reinforced concrete outer retaining wall 2 are arranged at the bottom of a surface mine side slope through a concrete foundation layer 3 to form a continuous groove-shaped base supported along the surface mine side slope, the reinforced concrete inner retaining wall is higher than the reinforced concrete outer retaining wall, the height of the reinforced concrete inner retaining wall 1 is more than 2m, the thickness of the reinforced concrete inner retaining wall is 60 cm-200 cm, the height of the reinforced concrete outer retaining wall 2 is more than 1.2m, the thickness of the reinforced concrete outer retaining wall is 45 cm-100 cm, a plurality of reinforcing anchor rod mounting holes are drilled in a horizontal row along the bottom of the surface mine side slope in an inclined mode, the distance between the reinforcing anchor rod mounting holes in the horizontal row is 1 m-4 m, and transverse and longitudinal reinforcing steel bars are arranged inside the reinforced concrete inner retaining wall 1 and the reinforced concrete outer retaining wall 2; one end of each of the plurality of reinforcing anchor rods 4 is obliquely inserted into the reinforcing anchor rod mounting hole, the other end of each of the plurality of reinforcing anchor rods 4 is bound with the reinforcing steel bar on the rear side of the reinforced concrete inner retaining wall 1, the reinforcing anchor rods 4 are made of deformed steel bars or round steel bars with the diameter of more than 32mm, and the length of each of the reinforcing anchor rods 4 is greater than the depth of the reinforcing anchor rod mounting hole so as to ensure the connection with the reinforcing steel bar of the inner retaining wall; the rear side of the retaining wall 1 in the reinforced concrete is embedded with a small broken stone concrete filling layer 5 with the edge fixedly connected with the mine side slope and the granularity smaller than 50mm, the plurality of reinforcing anchor rods 4 are fixedly connected with the retaining wall 1 in the reinforced concrete and the mine side slope, the lower part of the broken stone covering layer 6 is arranged in the open mine side slope supporting groove-shaped base, and the upper part of the broken stone covering layer is laid along the open mine side slope to form a triangular broken stone covering layer.
The granularity of the rubbles of the triangular rubble covering layer 6 is 100-200 mm, and a stone blocking net is further arranged on the upper portion of the triangular rubble covering layer.
The utility model discloses a construction method is:
1) cleaning a construction platform at the position of a side slope of a surface mine to be reinforced, obliquely drilling a transverse row of reinforcing anchor rod mounting holes on the side slope close to the slope bottom by using a drilling machine, wherein the drilling depth is required to be driven into original rock with good stability;
2) inserting reinforcing steel bars into the drilled reinforcing anchor rod mounting holes and grouting to form reinforcing anchor rods 4, wherein the holes are required to be reserved with reinforcing steel bars with certain lengths, and the reinforcing steel bars can be ensured to be integrated with the reinforcing steel bars in the retaining wall 1 in the reinforced concrete in the next step; performing reinforcement construction of the two reinforced concrete inner and outer retaining walls and the concrete foundation layer to ensure that the reinforcing anchor rods 4, the reinforced concrete inner retaining wall 1, the reinforced concrete outer retaining wall 2 and the concrete foundation layer 3 are connected into a whole;
3) firstly, pouring the concrete foundation layer 3, pouring the two reinforced concrete internal and external retaining walls after the curing is finished, and then filling the reinforced concrete internal retaining walls and the side slopes 7 with broken stone concrete;
4) and finally, the whole gravel covering is completed, and the stability is improved. A more stable mine slope supporting structure is realized.
Claims (8)
1. A combined supporting structure for the side slope of open-pit mine is composed of internal and external retaining walls of reinforced concrete, several reinforcing anchor rods and broken stone covering layer,
the reinforced concrete inner retaining wall and the reinforced concrete outer retaining wall are arranged at the bottom of the surface mine side slope through the concrete foundation layer to form a continuous groove-shaped base supported along the surface mine side slope, a plurality of reinforcing anchor rod mounting holes are drilled in a horizontal row along the bottom of the surface mine side slope in an inclined manner, one end of each of the plurality of reinforcing anchor rods is obliquely inserted into the reinforcing anchor rod mounting hole, the other end of each reinforcing anchor rod is bound with the steel bars on the rear side of the reinforced concrete inner retaining wall, a small broken stone concrete filling layer with the edge fixedly connected with the mine side slope and the granularity less than 50mm is embedded at the rear side of the reinforced concrete inner retaining wall, the plurality of reinforcing anchor rods are fixedly connected with the reinforced concrete inner retaining wall and the mine side slope, the lower part of the gravel covering layer is arranged in the groove-shaped base of the surface mine side slope support, and the upper part of the gravel covering layer is laid along the surface mine side slope to form a triangular gravel covering layer.
2. The surface mine slope combined supporting structure as claimed in claim 1, wherein the crushed stone granularity of the triangular crushed stone covering layer is 100-200 mm.
3. The strip mine slope combined supporting structure as claimed in claim 1, wherein the reinforced concrete inner retaining wall is disposed higher than the reinforced concrete outer retaining wall.
4. The combined slope supporting structure for surface mine according to claim 1, wherein the reinforced concrete inner retaining wall and the reinforced concrete outer retaining wall are internally provided with transverse and longitudinal reinforcing steel bars.
5. The strip mine slope combined supporting structure as claimed in claim 1, wherein a stone blocking net is further provided on the upper portion of the triangular crushed stone covering layer.
6. The surface mine slope combined supporting structure as claimed in claim 1, wherein the reinforced concrete inner retaining wall has a height of 2m or more and a thickness of 60cm to 200cm, and the reinforced concrete outer retaining wall has a height of 1.2m or more and a thickness of 45cm to 100 cm.
7. The combined slope supporting structure for surface mine according to claim 1, wherein the distance between the plurality of reinforcing anchor rod mounting holes in a row is 1-4 m.
8. The surface mine slope combined supporting structure of claim 1, wherein the reinforcing anchor rod is made of deformed steel bar or round steel bar with a diameter of over 32mm, and the length of the reinforcing anchor rod is the same as the depth of the mounting hole of the reinforcing anchor rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021774972.3U CN213204164U (en) | 2020-08-24 | 2020-08-24 | Combined supporting structure for surface mine side slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021774972.3U CN213204164U (en) | 2020-08-24 | 2020-08-24 | Combined supporting structure for surface mine side slope |
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| CN213204164U true CN213204164U (en) | 2021-05-14 |
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| CN202021774972.3U Active CN213204164U (en) | 2020-08-24 | 2020-08-24 | Combined supporting structure for surface mine side slope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115108235A (en) * | 2022-08-29 | 2022-09-27 | 中铁工程服务有限公司 | Mine aggregate conveying system and conveying system laying method |
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2020
- 2020-08-24 CN CN202021774972.3U patent/CN213204164U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115108235A (en) * | 2022-08-29 | 2022-09-27 | 中铁工程服务有限公司 | Mine aggregate conveying system and conveying system laying method |
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