High and steep rock slope shotcrete-anchor supporting structure

Abstract

The utility model relates to the technical field of rock slope supporting, and discloses a high and steep rock slope shotcrete-anchor supporting structure which comprises a metal net, a plurality of first anchor rods installed on one side of the metal net and a concrete layer covering the outer portion of the metal net. A threaded rod is rotationally connected into the supporting block in a penetrating mode, a plurality of adjusting mechanisms are arranged outside the threaded rod, and a plurality of positioning mechanisms are arranged on the surfaces of the upper side and the lower side of the first anchor rod. The adjusting mechanism and the positioning mechanism are arranged, a threaded rod is rotated to drive a moving seat in the adjusting mechanism to move towards the right side, and a roller can extrude a positioning rod in the positioning mechanism, so that the positioning rod is moved out of the first anchor rod and abuts against the high and steep rock slope, and the first anchor rod and the high and steep rock slope are fixed together; the situation that the first anchor rod and the high and steep rock slope are connected only through interface bonding force and friction force is avoided, and therefore the installation stability of the first anchor rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rock slope support, in particular to a high and steep rock slope sprayed anchor support structure. Background Art

[0002] In civil engineering, the stability and safety of high and steep rock slopes have always been important issues in engineering design and construction. Due to complex geological conditions, severe rock weathering, earthquakes and other natural factors, high and steep rock slopes are prone to geological disasters such as landslides and collapses, posing a serious threat to people's lives and property. Traditional high and steep rock slopes are supported by piles, which has a long construction period and a high support cost per square meter, increasing production costs.

[0003] A Chinese patent discloses a high and steep rock slope spray anchor support structure (authorization announcement number CN205399445U). This patented technology uses anchor rods as the main load-bearing components. It relies on the interface bonding force or friction between the anchor rods and the rock mass to withstand tension under the condition of rock mass deformation and interact with the rock mass through the anchor rods, so that the slope becomes a rock mass with integrity and stability. Under the action of high-pressure air, concrete is sprayed at high speed to the sprayed surface, producing an embedded effect, so that the spray layer and the soil layer are closely combined and form a whole, changing the stress conditions. The steel mesh can effectively adjust the internal stress distribution of the spray layer and the anchor rod, increase the integrity of the flexible support, and ensure the stability of the slope. The connection is orderly, which greatly shortens the construction period and saves the cost of slope support.

[0004] However, it has certain disadvantages: the anchor rod and the rock mass are connected only by interface adhesion or friction, which is easily affected by the external environment (such as weathering, rain erosion, temperature changes, etc.), resulting in weakened connection force and thus reducing the installation stability of the anchor rod. Utility Model Content

[0005] The utility model aims to provide a high and steep rock slope sprayed anchor support structure to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high and steep rock slope sprayed anchor support structure comprises a metal mesh, a plurality of first anchor rods installed on one side of the metal mesh, and a concrete layer covering the outside of the metal mesh, a second anchor rod is installed at the left end of the first anchor rod, and a plurality of slide grooves are provided on the upper and lower surfaces of the interior of the first anchor rod, a support block is installed at the left end of the interior of the first anchor rod, a threaded rod is rotatably connected to the interior of the support block, a plurality of adjustment mechanisms are provided on the outside of the threaded rod, and a plurality of positioning mechanisms are provided on the upper and lower surfaces of the first anchor rod.

[0008] As a further solution of the utility model: the adjustment mechanism includes a moving seat, the upper and lower ends of the moving seat are both equipped with sliders, and the right end of the moving seat is equipped with a moving plate, and the upper and lower ends of the moving plate are both equipped with rollers.

[0009] As a further solution of the utility model: the positioning mechanism includes a positioning plate, a positioning rod is installed through the interior of the positioning plate, and a spring is installed on the surface of the positioning plate close to the first anchor rod, and the surface of the positioning rod close to the threaded rod is an inclined surface.

[0010] As a further solution of the present invention: the second anchor rod is connected to the metal mesh.

[0011] As a further solution of the utility model: the movable seat is threadedly connected to the outside of the threaded rod, and the sliding block is slidably connected to the inside of the sliding groove.

[0012] As a further solution of the utility model: the positioning plate is located inside the first anchor rod, the positioning rod movably penetrates one side surface of the first anchor rod, and one end of the spring is connected to one side surface inside the first anchor rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model is provided with an adjusting mechanism and a positioning mechanism. Rotating the threaded rod can drive the moving seat in the adjusting mechanism to move to the right, and the roller will squeeze the positioning rod in the positioning mechanism, so that the positioning rod is moved out of the first anchor rod and pressed against the high and steep rock slope, thereby firmly fixing the first anchor rod and the high and steep rock slope together, avoiding the first anchor rod and the high and steep rock slope being connected only by interface bonding force and friction force, thereby improving the stability of the first anchor rod installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a high and steep rock slope sprayed anchor support structure;

[0016] Figure 2 This is a cross-sectional view of a high and steep rock slope sprayed anchor support structure;

[0017] Figure 3 for Figure 2 A magnified view of middle;

[0018] Figure 4 It is a schematic diagram of the structure of the first anchor rod in a high and steep rock slope spray anchor support structure;

[0019] Figure 5 It is a cross-sectional view of the first anchor rod in a high and steep rock slope spray anchor support structure;

[0020] Figure 6The figure is a schematic diagram of the structure of the positioning mechanism in a high and steep rock slope shotcrete support structure.

[0021] In the figure: 1. metal mesh; 2. first anchor rod; 3. concrete layer; 4. second anchor rod; 5. slide groove; 6. support block; 7. threaded rod; 8. adjustment mechanism; 9. moving seat; 10. slider; 11. moving plate; 12. roller; 13. positioning mechanism; 14. positioning plate; 15. positioning rod; 16. spring; 17. high and steep rock slope. DETAILED DESCRIPTION

[0022] See also Figures 1 to 3 In an embodiment of the utility model, a high and steep rock slope spray anchor support structure comprises a metal mesh 1, a plurality of first anchor rods 2 installed on one side of the metal mesh 1, and a concrete layer 3 covering the outside of the metal mesh 1;

[0023] The first anchor rod 2 is inserted into the high and steep rock slope 17, and the connection hole between the first anchor rod 2 and the high and steep rock slope 17 is slightly larger than the diameter of the first anchor rod 2;

[0024] After the first anchor rod 2 and the metal mesh 1 are installed, concrete is sprayed on the outside of the metal mesh 1 to form a concrete layer 3 .

[0025] exist Figures 2 to 6 In the figure: the left end of the first anchor rod 2 is equipped with a second anchor rod 4, the second anchor rod 4 is connected to the metal mesh 1, the inner upper and lower surfaces of the first anchor rod 2 are provided with a plurality of slide grooves 5, the inner left end of the first anchor rod 2 is equipped with a support block 6, the inner part of the support block 6 is connected with a threaded rod 7, and the outer part of the threaded rod 7 is provided with a plurality of adjustment mechanisms 8, the adjustment mechanism 8 includes a moving seat 9, the moving seat 9 is threadedly connected to the outer part of the threaded rod 7, the upper and lower ends of the moving seat 9 are equipped with sliders 10, the sliders 10 are slidably connected to the inner part of the slide groove 5, and the right end of the moving seat 9 is equipped with a moving seat 9. A movable plate 11, rollers 12 are installed at both upper and lower ends of the movable plate 11, multiple positioning mechanisms 13 are arranged on the upper and lower surfaces of the first anchor rod 2, the positioning mechanism 13 includes a positioning plate 14, the positioning plate 14 is located inside the first anchor rod 2, a positioning rod 15 is installed inside the positioning plate 14, the positioning rod 15 movably penetrates one side surface of the first anchor rod 2, a spring 16 is installed on one side surface of the positioning plate 14 close to the first anchor rod 2, one end of the spring 16 is connected to one side surface of the inside of the first anchor rod 2, and the side surface of the positioning rod 15 close to the threaded rod 7 is an inclined surface;

[0026] The second anchor rod 4 is welded to the metal mesh 1, and the second anchor rod 4 is connected to the first anchor rod 2 by thread connection;

[0027] By rotating the threaded rod 7, the movable seat 9 can move to the right, the roller 12 fits the inclined surface of the positioning rod 15 and squeezes the positioning rod 15, the spring 16 is compressed, the positioning rod 15 moves out of the first anchor rod 2 and presses against the high and steep rock slope 17, thereby improving the firmness between the first anchor rod 2 and the high and steep rock slope 17.

[0028] The working principle of the utility model is as follows: when in use, a plurality of holes are firstly opened on the high and steep rock slope 17 by means of a drilling device, mud is injected into the holes, and then the first anchor rod 2 is inserted into the holes to squeeze out the excess mud, and the threaded rod 7 is rotated by means of a tool, and the movable seat 9 threadedly connected with the threaded rod 7 will move to the right, and the roller 12 will squeeze the positioning rod 15, and the positioning rod 15 is moved out of the first anchor rod 2 and pressed against the high and steep rock slope 17, thereby fixing the first anchor rod 2; then, the second anchor rod 4 is installed together with the first anchor rod 2, and then the metal mesh 1 is installed on the surface of the high and steep rock slope 17, and the second anchor rod 4 is welded together with the metal mesh 1, and finally, concrete is sprayed on the surface of the metal mesh 1 to form a concrete layer 3, thereby completing the installation of the support structure.

[0029] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high and steep rock slope spray anchor support structure, comprising a metal mesh (1), a plurality of first anchor rods (2) installed on one side of the metal mesh (1), and a concrete layer (3) covering the outside of the metal mesh (1), characterized in that: A second anchor rod (4) is installed at the left end of the first anchor rod (2), and a plurality of slide grooves (5) are provided on both upper and lower surfaces of the interior of the first anchor rod (2). A support block (6) is installed at the left end of the interior of the first anchor rod (2), and a threaded rod (7) is rotatably connected to the interior of the support block (6). A plurality of adjustment mechanisms (8) are provided on the outside of the threaded rod (7), and a plurality of positioning mechanisms (13) are provided on both upper and lower surfaces of the first anchor rod (2).

2. A high and steep rock slope spray anchor support structure according to claim 1, characterized in that: The adjustment mechanism (8) comprises a movable seat (9), wherein the upper and lower ends of the movable seat (9) are both provided with sliders (10), and the right end of the movable seat (9) is provided with a movable plate (11), and the upper and lower ends of the movable plate (11) are both provided with rollers (12).

3. The high and steep rock slope sprayed anchor support structure according to claim 1 is characterized in that: The positioning mechanism (13) comprises a positioning plate (14), a positioning rod (15) is installed through the interior of the positioning plate (14), a spring (16) is installed on the surface of the side of the positioning plate (14) close to the first anchor rod (2), and the surface of the side of the positioning rod (15) close to the threaded rod (7) is an inclined surface.

4. The high and steep rock slope sprayed anchor support structure according to claim 1 is characterized in that: The second anchor rod (4) is connected to the metal mesh (1).

5. The high and steep rock slope sprayed anchor support structure according to claim 2 is characterized in that: The movable seat (9) is threadedly connected to the outside of the threaded rod (7), and the sliding block (10) is slidably connected to the inside of the sliding groove (5).

6. The high and steep rock slope sprayed anchor support structure according to claim 3 is characterized in that: The positioning plate (14) is located inside the first anchor rod (2), the positioning rod (15) movably penetrates a side surface of the first anchor rod (2), and one end of the spring (16) is connected to a side surface inside the first anchor rod (2).

Images