Anchor rod assembly for reservoir side slope

Abstract

The anchor rod assembly comprises a rod body, a drill bit, a base plate, a nut, a hollow pipe, a threaded sleeve and a first spring, the drill bit is arranged at the front end of the rod body, grouting holes are formed in the end, close to the drill bit, of the rod body at intervals, the hollow pipe is concentrically arranged in the rod body to block the grouting holes, and a through hole corresponding to the hollow pipe is formed in the rod body; the first spring is arranged in the rod body and located between the drill bit and the hollow pipe, an annular groove located in the front side of the grouting hole is formed in the hollow pipe, a valve hole corresponding to the grouting hole is formed in the annular groove, a section of internal thread is arranged at the tail of the through hole, and the threaded sleeve is arranged in the internal thread to limit the hollow pipe. By means of the mode, according to the anchor rod assembly for the reservoir side slope, the grouting hole is blocked in the rod body through the hollow pipe, the blocking problem caused by the fact that gravel or soil blocks enter the rod body through the grouting hole in the drilling process is avoided, and it is guaranteed that drilling construction and follow-up grouting are conducted smoothly.

Description

Technical Field

[0001] The invention relates to the technical field of anchor rods, in particular to an anchor rod assembly for a reservoir slope. Background Art

[0002] The geological conditions of the slopes of some reservoirs are poor, resulting in poor slope stability. Anchor rods are needed to fix the support structure in the soil of the reservoir slope to ensure that it will not be displaced or deformed when subjected to soil pressure, thereby improving the safety of the support structure.

[0003] Anchor rods are widely used in engineering fields such as slope stabilization, tunnel support and dam reinforcement. When using anchor rods, it is necessary to select the appropriate anchor rod type and construction method according to the specific engineering conditions and design requirements of the reservoir slope.

[0004] There are many types of anchor rods, among which the self-drilling anchor rod has the function of self-drilling. The anchor rod can be installed while drilling, which makes the construction faster. At the same time, the hollow grouting self-drilling anchor rod can also be grouting, injecting anchoring agents such as resin, engineering glue, and quick-setting cement from the anchor rod into the anchor hole. In order to improve the uniformity of the circumferential distribution of the anchoring agent, grouting holes can be processed around the anchor rod, and the anchoring agent can be injected into the surrounding areas of the anchor hole at the same time through the grouting holes. In the process of drilling the anchor rod into the anchor hole, the gravel and soil in the slope can easily drill into the grouting hole, which not only blocks the grouting hole, but also easily enters the anchor rod through the anchor rod, blocking the entire anchor rod, resulting in the inability to grout normally in the subsequent period, which needs to be improved. Summary of the invention

[0005] The main technical problem solved by the present invention is to provide an anchor rod assembly for a reservoir slope, which is convenient for drilling construction and grouting and avoids the problem of blockage of grouting holes.

[0006] To solve the above technical problems, a technical solution adopted by the present invention is: to provide an anchor rod assembly for a reservoir slope, comprising: a rod body, a drill bit, a pad, a nut, a hollow tube, a screw sleeve and a first spring, the drill bit being arranged at the front end of the rod body, a grouting hole being arranged at intervals on one end of the rod body adjacent to the drill bit, the hollow tube being concentrically arranged in the rod body for sealing the grouting hole, a through hole corresponding to the hollow tube being arranged in the rod body, the first spring being arranged in the rod body and located between the drill bit and the hollow tube, an annular groove being arranged on the hollow tube at the front side of the grouting hole, a valve hole corresponding to the grouting hole being arranged in the annular groove, a section of internal thread being arranged at the tail end of the through hole, the screw sleeve being arranged in the internal thread for limiting the hollow tube, a section of external thread being arranged at the outer circular tail end of the rod body, the pad being sleeved on the tail end of the rod body, the nut being arranged on the external thread and being located on the front side of the pad for limiting.

[0007] In a preferred embodiment of the present invention, a first U-shaped groove is symmetrically arranged at the tail of the rod body.

[0008] In a preferred embodiment of the present invention, a second U-shaped groove is correspondingly arranged at the tail of the hollow tube.

[0009] In a preferred embodiment of the present invention, a positioning hole corresponding to the rod body is provided in the pad.

[0010] In a preferred embodiment of the present invention, a conical plug sleeved on the rod body is provided on the back side of the pad.

[0011] In a preferred embodiment of the present invention, the valve hole is a stepped hole, and a second spring pointing to the inner wall of the rod is arranged in the valve hole.

[0012] In a preferred embodiment of the present invention, a hexagonal hole is provided in the screw sleeve.

[0013] The beneficial effects of the present invention are as follows: the present invention points out an anchor rod assembly for a reservoir slope, the rod body can be connected to a driving device and rotated, the rod body can be installed while drilling a hole using a drill bit, and the grouting hole can be sealed in the rod body using a hollow tube, so as to avoid the blockage problem caused by gravel or soil blocks entering the rod body through the grouting hole during the drilling process, thereby ensuring the smooth progress of drilling construction and subsequent grouting. Before grouting, the hollow tube is pushed axially by rotating the screw sleeve, so that the grouting hole is connected with the annular groove, and the anchoring agent can be delivered to the grouting hole using the hollow tube, and finally enters the anchor hole, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which: Figure 1 It is a structural schematic diagram of a preferred embodiment of an anchor rod assembly for a reservoir slope of the present invention; Figure 2 yes Figure 1 A partial enlarged view of part A; Figure 3 yes Figure 1 A partial enlarged view of part B; Figure 4 yes Figure 3 Schematic diagram of the structure after the hollow tube in FIG. is moved horizontally. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1~Figure 4 , the embodiment of the present invention includes: like Figure 1~Figure 3 The reservoir slope anchor assembly shown includes: a rod body 1, a drill bit 2, a pad 5, a nut 7, a hollow tube 4, a threaded sleeve 16 and a first spring 3. The drill bit 2 is arranged at the front end of the rod body 1 and fixed by welding to facilitate drilling on the reservoir slope.

[0017] A through hole 18 corresponding to the hollow tube 4 is provided in the rod body 1, and a first U-shaped groove 13 is symmetrically provided at the tail of the rod body 1, which is convenient for connecting with a driving device to rotate the rod body 1, drive the drill bit 2 to rotate, and install the rod body 1 at the same time as obtaining an anchor hole.

[0018] like Figure 2 As shown, grouting holes 11 are arranged at intervals on one end of the rod body 1 adjacent to the drill bit 2, and the hollow tube 4 is concentrically arranged in the rod body 1 to seal the grouting hole 11, so as to avoid blockage caused by gravel or soil entering the rod body through the grouting hole during the drilling process, thereby ensuring the smooth progress of the drilling construction and subsequent grouting.

[0019] The first spring 3 is arranged in the rod body 1 and between the drill bit 2 and the hollow tube 4 to elastically support the front end of the hollow tube 4. The hollow tube 4 is provided with an annular groove 10 located in front of the grouting hole 11, and a valve hole 12 corresponding to the grouting hole 11 is arranged in the annular groove 10. Before drilling, the annular groove 10 is misaligned with the grouting hole 11, and the hollow tube 4 is used to block the grouting hole 11.

[0020] An internal thread 15 is provided at the tail of the through hole 18, and a screw sleeve 16 is provided in the internal thread 15 to limit the position of the hollow tube 4, so that the structure is stable. A hexagonal hole 17 is provided in the screw sleeve 16, such as Figure 3 As shown in the figure, the rotation operation can be performed using a wrench. Figure 4 As shown, before grouting, the hollow tube 4 is pushed axially by rotating the screw sleeve 16, so that the grouting hole 11 is connected to the annular groove 10, and the internal thread 15 is externally connected to the anchor injection device, so that the hollow tube 4 can be used to deliver the anchor to the grouting hole 11, and finally enter the anchor hole. After the anchor is solidified, the stability of the rod body 1 in the anchor hole is improved.

[0021] like Figure 3As shown, a second U-shaped groove 14 is correspondingly provided at the tail of the hollow tube 4 to facilitate the rotation operation of the hollow tube 4 and ensure that the grouting hole 11 and the valve hole 12 are in the same straight line. Figure 4 As shown, after the hollow tube 4 moves forward, the grouting hole 11 is concentric with the valve hole 12. After the grouting is completed, the screw sleeve 16 rotates in the opposite direction, and the hollow tube 4 moves outward under the drive of the first spring 3. The grouting hole 11 and the valve hole 12 are misaligned and restored to Figure 2 state, avoiding the backflow of anchoring agent and having high stability.

[0022] In this embodiment, the valve hole 12 adopts a stepped hole, and a second spring 9 pointing to the inner wall of the rod body 1 is arranged in the valve hole 12. After the hollow tube 4 moves forward, the grouting hole 11 is concentric with the valve hole 12, and the second spring 9 bounces into the grouting hole 11 to clean the gravel or soil in the grouting hole 11, thereby ensuring the smooth progress of subsequent grouting.

[0023] An external thread 8 is provided at the end of the outer circle of the rod body 1, and the pad 5 is sleeved on the end of the rod body 1. A positioning hole corresponding to the rod body 1 is provided in the pad 5 to position the pad 5. The nut 7 is set on the external thread 8 and is located on the front of the pad 5 for limiting the position, and the structure is stable.

[0024] like Figure 1 As shown, in this embodiment, a conical plug 6 sleeved on the rod body 1 is provided on the back of the pad 5, and the anchor hole is sealed by the conical plug 6 to prevent the outflow of the anchoring agent.

[0025] In summary, the anchor rod assembly for a reservoir slope disclosed in the present invention is easy to operate, avoids the problem of blockage of grouting holes, can be used to anchor the reservoir slope, and is convenient to construct.

[0026] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An anchor rod assembly for a reservoir slope, characterized in that: include: A rod body, a drill bit, a pad, a nut, a hollow tube, a screw sleeve and a first spring, wherein the drill bit is arranged at the front end of the rod body, a grouting hole is arranged at intervals on one end of the rod body adjacent to the drill bit, the hollow tube is concentrically arranged in the rod body to seal the grouting hole, a through hole corresponding to the hollow tube is arranged in the rod body, the first spring is arranged in the rod body and is located between the drill bit and the hollow tube, an annular groove is arranged on the hollow tube at the front side of the grouting hole, a valve hole corresponding to the grouting hole is arranged in the annular groove, a section of internal thread is arranged at the tail of the through hole, the screw sleeve is arranged in the internal thread to limit the hollow tube, a section of external thread is arranged at the outer circle tail of the rod body, the pad is sleeved on the tail of the rod body, the nut is arranged on the external thread and is located on the front side of the pad for limiting.

2. The anchor rod assembly for reservoir slope according to claim 1, characterized in that: The tail of the rod body is symmetrically provided with a first U-shaped groove.

3. The anchor rod assembly for reservoir slope according to claim 1, characterized in that: A second U-shaped groove is correspondingly arranged at the tail of the hollow tube.

4. The anchor rod assembly for reservoir slope according to claim 1, characterized in that: The pad is provided with a positioning hole corresponding to the rod body.

5. The anchor rod assembly for reservoir slope according to claim 1, characterized in that: A conical plug sleeved on the rod body is arranged on the back side of the pad.

6. The anchor rod assembly for reservoir slope according to claim 1, characterized in that: The valve hole is a stepped hole, and a second spring pointing to the inner wall of the rod body is arranged in the valve hole.

7. The reservoir slope anchor assembly according to claim 1, characterized in that: A hexagonal hole is arranged in the screw sleeve.

Images