A soft rock slope treatment and reinforcement structure for an open pit mine

Abstract

The utility model discloses a kind of open pit soft rock slope treatment reinforcing structure, including steel mesh layer, steel mesh layer covers in slope surface, and concrete layer is sprayed on the surface of steel mesh layer, multiple fixed anchor rods are insertedly connected and installed in slope, and fixed anchor rod is detachably installed with fixed sheet at the end far from slope, and fixed sheet is located above steel mesh layer, and fixed anchor rod includes anchor pipe, anchoring hole and grouting layer, anchor pipe is inserted in slope, and the end of anchor pipe inserted in slope is closed tip, multiple anchoring holes are opened in the circumferential array of anchor pipe close to tip position, and grouting layer is injected into anchor pipe along anchor pipe outer end.The utility model forms concrete coagulation block at the end of fixed anchor rod by setting grouting layer and anchoring hole, forms fixed for fixed anchor rod, improves the pullout resistance of fixed anchor rod, and better stabilizes open pit soft rock slope.

Description

Technical Field

[0001] This utility model belongs to the technical field of slope treatment, and relates to a reinforcement structure for soft rock slope treatment in open-pit mines. Background Technology

[0002] Soft rock slopes are slopes composed of soft rock, which are geologically loose and prone to deformation and damage, potentially triggering geological disasters. Some soft rock structures in open-pit mines are formed due to human mining activities. During mine restoration, it is necessary to treat these soft rock slopes to prevent further geological hazards.

[0003] The patent document with publication number CN202021737837 discloses a device for treating and reinforcing soft rock slopes in open-pit mines. It uses a cement mortar layer, fixed anchor rods and steel wire rope structure to fix the soft rock slope. However, the fixing force of this structure is limited, which may cause the fixed anchor rods to come loose. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a structure for the treatment and reinforcement of soft rock slopes in open-pit mines, which effectively solves the problems in the existing technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A structure for treating and reinforcing soft rock slopes in open-pit mines, characterized in that it comprises:

[0007] A steel mesh layer covering the slope surface;

[0008] A concrete layer, which is sprayed onto the surface of the steel mesh layer;

[0009] Fixed anchor bolts, a plurality of the fixed anchor bolts being inserted into the slope;

[0010] A fixing plate is detachably installed on the end of the fixed anchor rod away from the slope, and the fixing plate is located above the steel mesh layer;

[0011] The fixed anchor bolt includes,

[0012] An anchor pipe, wherein the anchor pipe is inserted into the slope, and the end of the anchor pipe inserted into the slope is a closed tip;

[0013] Anchoring holes: The anchor tube has multiple anchoring holes arranged in a circumferential array near its tip.

[0014] Grouting layer, which is injected into the anchor pipe along the outer end of the anchor pipe.

[0015] Optionally, an anchoring plate is fixedly connected to the side of the anchoring hole near the tip of the anchor tube, and the anchoring plate is an integral part of the anchor tube.

[0016] Optionally, the anchor pipe has multiple vent holes on one side near the anchoring hole.

[0017] Optionally, the outer end of the anchor pipe is provided with a through hole in the radial direction, and the fixing plate is provided with a through hole at the corresponding position and is equipped with a fixing bolt.

[0018] Optionally, the outer end of the anchor pipe is provided with a cross groove along the axial direction, and a steel wire rope is installed in the cross groove, the steel wire rope connecting the adjacent anchor pipes.

[0019] Optionally, the fixing piece includes a convex ring, a fixing ring is sleeved on the small diameter end of the convex ring, the small diameter end of the convex ring has the cross groove, and the fixing bolt is installed on the small diameter end of the convex ring.

[0020] Optionally, the anchor plate has multiple V-shaped grooves on its outer side.

[0021] Optionally, a rubber plug is installed inside the vent hole.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By setting up grouting layers and anchoring holes, concrete blocks are formed at the ends of the fixed anchor rods, which fix the fixed anchor rods, improve the pull-out resistance of the fixed anchor rods, and better stabilize the soft rock slopes of open-pit mines;

[0024] 2. By setting anchor plates, when concrete grout enters the soft rock layer through the anchor holes, the anchor plates are squeezed outward, and the anchor plate array expands outward into an anchor shape, further enhancing the pull-out resistance of the anchor pipe;

[0025] 3. By setting up steel wire ropes, it is convenient to restrict the relationship between adjacent anchor pipes, and on the other hand, the steel wire ropes restrict the steel mesh layer, further fixing the steel mesh layer. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0027] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle;

[0028] Figure 3 yes Figure 1 Enlarged diagram of part B.

[0029] Reference numerals in the attached drawings: 1. Steel mesh layer; 3. Fixed anchor rod; 31. Anchor pipe; 32. Anchor hole; 33. Grouting layer; 34. Anchor plate; 35. Outlet hole; 4. Fixing plate; 401. Convex ring; 402. Fixing ring; 41. Fixing bolt; 42. Cross groove; 43. Steel wire rope. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1 to 3 This utility model discloses an open-pit mine soft rock slope treatment and reinforcement structure, including a steel mesh layer 1, which covers the slope surface. The surface of the steel mesh layer 1 is sprayed with a concrete layer. Multiple fixed anchor rods 3 are inserted and installed inside the slope. A fixing plate 4 is detachably installed at the end of the fixed anchor rod 3 away from the slope. The fixing plate 4 is located above the steel mesh layer 1. The fixed anchor rod 3 includes an anchor pipe 31, an anchor hole 32 and a grouting layer 33. The anchor pipe 31 is inserted into the slope. The end of the anchor pipe 31 inserted into the slope is a closed tip. Multiple anchor holes 32 are circumferentially arranged near the tip of the anchor pipe 31. The grouting layer 33 is injected into the anchor pipe 31 along the outer end of the anchor pipe 31.

[0032] Specifically, an anchoring hole 32 is provided at the end of the fixed anchor rod 3, and a grouting layer 33 is provided inside the anchor pipe 31. The grouting layer 33 enters the soft rock layer through the anchor pipe 31 and the anchoring hole 32 and solidifies, thus fixing the anchor pipe 31.

[0033] In this way, by setting the grouting layer 33 and the anchoring hole 32, a concrete block is formed at the end of the fixed anchor rod 3, which fixes the fixed anchor rod 3, improves the pull-out resistance of the fixed anchor rod 3, and better stabilizes the soft rock slope of the open-pit mine.

[0034] In some feasible methods, the steel mesh layer 1 is a steel mesh covering the soft rock slope. Holes are drilled at suitable locations on the soft rock slope, and anchor rods 3 are inserted. After the steel mesh layer 1 is laid, fixing plates 4 are fixed to the anchor rods 3. The fixing plates 4 provide downward pressure and fixation to the steel mesh layer 1. Then, a concrete layer is sprayed, and the concrete layer and steel mesh layer 1 fix the soft rock slope. Concrete grout is injected into the anchor pipe 31 using a grouting machine. The grout enters the interior of the soft rock layer along the anchor hole 32, and after solidification, it fixes the anchor pipe 31.

[0035] As a specific implementation of the open-pit mine soft rock slope treatment and reinforcement structure provided in the application, the anchoring hole 32 is fixedly connected to the side near the tip of the anchor pipe 31 with an anchoring plate 34, and the anchoring plate 34 and the anchor pipe 31 are an integral structure.

[0036] Overall, by setting the anchor plate 34, when the concrete grout enters the soft rock layer through the anchor hole 32, the anchor plate 34 is squeezed outward, and the array of anchor plates 34 expands outward into an anchor shape, which further enhances the pull-out resistance of the anchor pipe 31.

[0037] Furthermore, the anchor pipe 31 has multiple vent holes 35 on one side near the anchor hole 32.

[0038] It should be understood that by setting the external discharge hole 35, the concrete slurry can be squeezed outward through the external discharge hole 35 to form root-like concrete blocks in the soft rock layer, further enhancing the pull-out resistance of the anchor pipe 31.

[0039] Furthermore, a rubber plug is installed inside the vent 35.

[0040] It should be understood that by setting the rubber plug, the possibility of the anchor pipe 31 being blocked by soft rock fragments during insertion is reduced.

[0041] In some feasible methods, the bottom of the anchor pipe 31 is provided with a U-shaped opening, and an anchoring plate 34 is formed inside the U-shaped opening. The anchoring plate 34 is located at the anchoring hole 32. To facilitate the outward expansion of the anchoring plate 34, multiple V-shaped grooves are opened on the outer side of the anchoring plate 34. The V-shaped grooves are arranged along the axial direction of the anchoring plate 34. Under grouting pressure, it is convenient for the anchoring plate 34 to bend along the V-shaped grooves. The multiple V-shaped grooves are provided so that when some V-shaped grooves are blocked by hard rocks, they can be bent at other V-shaped groove positions to form a fixation. After the anchoring plate 34 is expanded outward, it becomes barbed, which enhances the pull-out resistance of the anchor pipe 31.

[0042] As another specific implementation of the open-pit mine soft rock slope treatment and reinforcement structure provided in the application, the outer end of the anchor pipe 31 is provided with a through hole along the radial direction, and the fixing plate 4 is provided with a through hole at the corresponding position and is equipped with a fixing bolt 41.

[0043] Depending on the specific application scenario, the installation of the fixing plate 4 is facilitated by setting the fixing bolt 41 and the through hole.

[0044] Furthermore, a cross groove 42 is provided on the outer end of the anchor pipe 31 along the axial direction, and a steel wire rope 43 is installed in the cross groove 42, which connects the adjacent anchor pipe 31.

[0045] It should be understood that by setting the wire rope 43, on the one hand, it is convenient to form a restriction between adjacent anchor pipes 31, and on the other hand, the wire rope 43 restricts the steel mesh layer 1, further fixing the steel mesh layer 1.

[0046] Furthermore, the fixing piece 4 includes a convex ring 401, a fixing ring 402 is sleeved on the small diameter end of the convex ring 401, a cross groove 42 is opened on the small diameter end of the convex ring 401, and a fixing bolt 41 is installed on the small diameter end of the convex ring 401.

[0047] It should be understood that the structure of the fixing plate 4 facilitates the installation of the wire rope 43.

[0048] In some feasible methods, the convex ring 401 is located above the steel mesh layer 1, and after the steel wire rope 43 is inserted along the cross groove 42, the fixing ring 402 is installed and fixed with the fixing bolt 41.

[0049] In some feasible methods, a cross groove 42 is provided in the anchor pipe 31. On the one hand, after the fixing ring 402 is installed, the end of the anchor pipe 31 can be fixed by the arc plate of the cross groove 42. On the other hand, the steel mesh layer 1 can also be fixed by bending the arc plate without using the fixing plate 4, which improves the convenience of use.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A structure for treating and reinforcing soft rock slopes in open-pit mines, characterized in that, include: A steel mesh layer (1) is applied to the surface of the slope. A concrete layer, which is sprayed onto the surface of the steel mesh layer (1); Fixed anchors (3), a plurality of the fixed anchors (3) are inserted into the slope; Fixing plate (4), the fixing plate (4) is detachably installed on the fixed anchor rod (3) at the end away from the slope, the fixing plate (4) is located above the steel mesh layer (1); The fixed anchor rod (3) includes, Anchor pipe (31), the anchor pipe (31) is inserted into the slope, and the end of the anchor pipe (31) inserted into the slope is a closed tip; Anchoring holes (32): The anchor tube (31) has a plurality of anchoring holes (32) arranged in a circular array near the tip position; Grouting layer (33) is injected into the anchor pipe (31) along the outer end of the anchor pipe (31).

2. The open-pit mine soft rock slope treatment and reinforcement structure according to claim 1, characterized in that: An anchoring plate (34) is fixedly connected to the side of the anchoring hole (32) near the tip of the anchor tube (31), and the anchoring plate (34) is integral with the anchor tube (31).

3. The open-pit mine soft rock slope treatment and reinforcement structure according to claim 2, characterized in that: The anchor pipe (31) has multiple vent holes (35) on the side near the anchor hole (32).

4. The open-pit mine soft rock slope treatment and reinforcement structure according to claim 1, characterized in that: The anchor pipe (31) has a through hole in the radial direction at its outer end, and the fixing plate (4) has a through hole in the corresponding position and is fitted with a fixing bolt (41).

5. The open-pit mine soft rock slope treatment and reinforcement structure according to claim 4, characterized in that: The outer end of the anchor pipe (31) is provided with a cross groove (42) along the axial direction. A steel wire rope (43) is installed in the cross groove (42) and the steel wire rope (43) connects the adjacent anchor pipe (31).

6. The open-pit mine soft rock slope treatment and reinforcement structure according to claim 5, characterized in that: The fixing piece (4) includes a convex ring (401), a fixing ring (402) is sleeved on the small diameter end of the convex ring (401), the cross groove (42) is opened on the small diameter end of the convex ring (401), and the fixing bolt (41) is installed on the small diameter end of the convex ring (401).

7. The open-pit mine soft rock slope treatment and reinforcement structure according to claim 2, characterized in that: The anchor plate (34) has multiple V-shaped grooves on its outer side.

8. The open-pit mine soft rock slope treatment and reinforcement structure according to claim 3, characterized in that: A rubber plug is installed inside the vent hole (35).

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