Inner hole sealing structure and hollow grouting mining anchor cable based on inner hole sealing structure
The internal sealing structure solves the problems of slurry leakage and unstable sealing in traditional hollow grouting construction through the integrated design of clamps and slurry stoppers, realizes slurry sealing and simple construction, and adapts to complex geological conditions.
Patent Information
- Application Number
- CN202422137725.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-09-02
AI Technical Summary
Traditional external sealing hollow grouting construction has problems such as slurry leakage, unstable sealing effect and great construction difficulty, especially in complex geological conditions where precise control is difficult to achieve.
The internal sealing structure is adopted, and the clamp and slurry stopper are integrated into one design to achieve slurry sealing and highly stable sealing effects, eliminate independent sealing operations, and simplify the construction process.
Achieve slurry sealing, improve sealing stability, reduce construction difficulty, avoid slurry leakage, simplify construction operations, and adapt to complex geological conditions.
Smart Images
Figure CN223317875U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mining anchor cables, in particular to an inner-sealed hole structure and a hollow grouting mining anchor cable based on the inner-sealed hole structure. Background Art
[0002] In the reinforcement of geotechnical engineering projects such as mine shafts and coal mines, anchor-grouting support technology has become a widely adopted solution both domestically and internationally. Hollow grouting anchor cables / bolts play a crucial role in this technology. They not only provide stable support but also enhance the stability of the geotechnical structure through grouting.
[0003] In the traditional construction method, workers will drill holes in the surrounding rock, and then insert the hollow grouting mining anchor cable into the hole. After that, the external grouting machine will be connected to the anchor cable through the grouting interface and grouting work will be carried out. After the grouting is completed, the hole will be sealed with a grouting plug to realize the external sealing type hollow grouting construction.
[0004] The above-mentioned external sealing type hollow grouting construction has the following problems:
[0005] 1. Grout leakage: During the external sealing grouting process, if there are cracks, pores, or weak layers in the rock or soil around the drill hole, the grout may leak through these channels, resulting in poor grouting results. Leakage not only wastes grouting materials but also may affect the reinforcement effect and project quality.
[0006] 2. Unstable sealing effect: The effectiveness of external sealing depends largely on the construction workers' operating skills. Improper sealing materials or improper construction may result in insufficient sealing, causing slurry to leak or fail to be effectively injected into the intended area.
[0007] 3. Construction Difficulty: External sealing grouting requires precise control of grouting pressure and volume to ensure that the grout is evenly and fully filled into the area requiring reinforcement. However, due to the complexity and uncertainty of geological conditions, precise control is difficult to achieve during construction.
[0008] To this end, we provide an inner-sealed hole structure and a hollow grouting mining anchor based on the inner-sealed hole structure to solve the above problems. Utility Model Content
[0009] In response to the problems existing in the above-mentioned prior art, the utility model provides an internal sealed hole structure and a hollow grouting mining anchor based on the internal sealed hole structure. It cleverly adopts the internal sealed hole structure by integrating the clamp and the slurry stop plug into an integrated design, and matching the clamp with the internal sealed hole to achieve slurry sealing, high-stability sealing effect and simple construction.
[0010] In order to achieve the above-mentioned purpose, the internal sealing hole structure adopted by the present invention and the hollow grouting mining anchor cable based on the internal sealing structure include the following components:
[0011] An inner sealing hole body, wherein the inner sealing hole body is opened on the surrounding rock;
[0012] Anchor cable body, the anchor cable body is installed inside the inner sealing hole body;
[0013] A grout stopper installed at the tail end of the anchor cable body;
[0014] The clamp is installed behind the above-mentioned stop plug and is fixedly connected to the above-mentioned stop plug. The clamp is a matching structure with the above-mentioned inner sealing hole body, wherein:
[0015] The slurry stopper has a double-cone truncated cone-shaped portion, wherein the upper opening of the double-cone truncated cone-shaped portion has an outer diameter of 28 mm and an inner diameter of 24 mm, and the lower opening has an outer diameter of 24 mm and an inner diameter of 23 mm.
[0016] As a further optimization of the above solution, the slurry stopper is 500mm-700mm away from the tail end of the anchor cable body.
[0017] As a further optimization of the above solution, the diameter of the anchor cable body is 21mm-22mm, and the diameter of the inner sealing hole body is 32mm.
[0018] As a further optimization of the above solution, the slurry stopper further has a straight portion, and the size of the straight portion is the same as that of the above clamp.
[0019] As a further optimization of the above solution, the outer surface of the clamp is provided with anti-slip patterns.
[0020] As a further optimization of the above solution, the clamp has multiple annular protrusions, the diameters of which increase from inside to outside along the radial direction of the through hole, and the annular protrusion located at the innermost radial side of the through hole is a matching structure with the above-mentioned inner sealing hole body.
[0021] The hollow grouting mining anchor cable based on the inner-sealed hole structure includes the inner-sealed hole structure described in any one of the above technical solutions.
[0022] The inner sealing hole structure of the utility model and the hollow grouting mining anchor cable based on the inner sealing hole structure have the following beneficial effects:
[0023] 1. The internal sealing hole structure of the present invention and the hollow grouting mining anchor cable based on the internal sealing hole structure achieve a slurry sealing effect. By placing the clamp and slurry stopper inside the internal sealing hole body rather than outside, slurry is prevented from leaking through cracks, pores, or weak layers in the rock or soil around the drill hole.
[0024] 2. The internal sealing structure of the present invention and the hollow grouting mining anchor cable based on this internal sealing structure achieve a highly stable sealing effect. The grouting plug and the clamp are inserted into the internal sealing hole during the process of penetrating the anchor cable body, eliminating the need for a separate sealing operation. This sealing operation depends on the operator's operating skills. If the operator performs the operation improperly, the sealing may not be tight enough, resulting in slurry leakage or failure to effectively inject the intended area. The present invention eliminates the need for a subsequent separate sealing operation, thereby reducing the risk of manual intervention.
[0025] 3. The internal sealing hole structure and the hollow grouting mining anchor cable based on the internal sealing hole structure of the utility model achieve the effect of simple construction. By completing the sealing operation in advance, there is no need to precisely control the grouting pressure and grouting volume, thus avoiding the influence of the complexity and uncertainty of geological conditions on the precise control during the construction process.
[0026] 4. The inner sealing hole structure of the present invention and the hollow grouting mining anchor cable based on the inner sealing hole structure adopt annular protrusion structures of multiple sizes to achieve multi-layer sealing, thereby further enhancing the sealing effect.
[0027] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereby, and the embodiments of the present invention include many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 Schematic diagram of the structure of the inner sealed hole structure;
[0029] Figure 2 For this utility model Figure 1 Schematic diagram of the enlarged structure in;
[0030] Figure 3 It is a structural schematic diagram of the annular protrusion in the utility model.
[0031] In the figure: 1. Internal sealing hole body; 2. Surrounding rock; 3. Anchor cable body; 4. Grout stopper; 5. Clamp; 6. Double-conical frustum-shaped part; 7. Straight part; 8. Annular protrusion. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to illustrate the present invention and are not intended to limit the scope of the present invention.
[0033] It should be noted that when an element is referred to as being "disposed on, provided with" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected, connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. "Fixed connection" means a fixed connection. There are many ways of fixed connection, which are not within the scope of protection of this article. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only and do not represent the only implementation method.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0035] Please refer to the instruction manual Figure 1 And the instruction manual Figure 2 The first embodiment of the internal sealing hole structure of the utility model includes the following components:
[0036] The inner sealing hole body 1 is opened on the surrounding rock 2. The shape of the inner sealing hole body 1 can be designed into various forms such as round, square, etc. This embodiment does not limit the shape of the inner sealing hole body 1. Preferably, in this embodiment, the inner sealing hole adopts a circular structure. Specifically, the diameter of the inner sealing hole body 1 is 32 mm.
[0037] The anchor cable body 3 is installed inside the inner sealing hole body 1. Specifically, the anchor cable body 3 is provided with a hexagonal structure, a joint seat, a steel pipe, a clamp 5, a slurry stopper 4, a resin tube and a hollow steel strand in sequence along the depth direction of the inner sealing hole body 1. Since the hexagonal structure, the joint seat, the steel pipe, the resin tube and the hollow steel strand are common structures of the anchor cable body 3, the above structure will not be further described in this embodiment;
[0038] Furthermore, the diameter of the anchor cable body 3 is 21 mm-22 mm.
[0039] The slurry stopper 4 is installed at the tail end of the anchor cable body 3. Specifically, the slurry stopper 4 is 500 mm to 700 mm away from the tail end of the anchor cable body 3. Preferably, in this embodiment, the slurry stopper 4 is 500 mm away from the tail end of the anchor cable body 3.
[0040] Furthermore, the slurry stopper 4 has a double-conical frustum-shaped part 6, the upper outer diameter of the double-conical frustum-shaped part 6 is 28 mm, the inner diameter is 24 mm, the lower outer diameter is 24 mm, and the inner diameter is 23 mm. Of course, the above-mentioned upper outer diameter and lower outer diameter can also be designed to other sizes, but it is necessary to ensure that the upper outer diameter is larger than the lower outer diameter and the upper outer diameter is less than or equal to the size of the inner sealing hole body 1.
[0041] Furthermore, the slurry stopper 4 also has a straight portion 7 , the size of which is the same as that of the clamp 5 .
[0042] It should be noted that the outer diameter of the upper opening is toward the outside of the inner sealing hole.
[0043] The clamp 5 is installed behind the above-mentioned slurry stop plug 4 and is fixedly connected to the above-mentioned slurry stop plug 4. The clamp 5 and the above-mentioned inner sealing body 1 are a matching structure, so that the grouting action is placed after the sealing action, thereby achieving slurry sealing, high-stability sealing effect and simple construction.
[0044] Furthermore, the outer surface of the clamp 5 is provided with anti-slip lines to increase the friction between the clamp 5 and the inner wall of the inner sealing hole body 1.
[0045] The inner sealed hole structure provided in this embodiment has the following working process:
[0046] First, the surrounding rock 2 is drilled with a drilling tool. After the drilling is completed, the staff inserts the anchor body 3 into the inner sealing hole body 1. At this time, the clamp 5 and the grouting plug 4 are located inside the above-mentioned inner sealing hole body 1. Afterwards, the external grouting equipment is connected to the anchor body 3 and the grouting operation is carried out.
[0047] The present invention cleverly adopts an internal sealed hole structure. By integrating the clamp 5 and the slurry stopper 4 into an integrated design, and matching the clamp 5 with the internal sealed hole, slurry sealing, high-stability sealing effect and simple construction are achieved. In order to ensure the slurry sealing effect, the tensile strength of the steel wire of the above-mentioned hollow steel strand is designed to be greater than or equal to 2230MPa, and the maximum force of the hollow steel strand is greater than or equal to 512KN.
[0048] Please refer to the instruction manual Figure 3 The second embodiment of the internal sealing structure of the present invention is based on the structure of the first embodiment. The present invention further improves the clamp 5. Specifically:
[0049] The clamp 5 has multiple sections of annular protrusions 8, the diameter of which increases from the inside to the outside along the radial direction of the through hole. The annular protrusion 8 located on the innermost side of the through hole is a matching structure with the above-mentioned inner sealing body 1. A structure of annular protrusions 8 of multiple sizes is adopted to achieve multi-layer sealing, thereby further enhancing the sealing effect.
[0050] Furthermore, the annular protrusion 8 and the clamp 5 are an integrated structure.
[0051] Please refer to the instruction manual Figure 1-3 The utility model is based on the first embodiment of the hollow grouting mining anchor cable with the inner sealing hole structure. The hollow grouting mining anchor cable is applied with the inner sealing hole structure as in any embodiment.
[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. The inner sealed hole structure is characterized by: Includes the following components: An inner sealing hole body (1), wherein the inner sealing hole body (1) is opened on the surrounding rock (2); An anchor cable body (3), the anchor cable body (3) being installed inside the inner sealing hole body (1); A slurry stopper (4), the slurry stopper (4) being installed at the tail of the anchor cable body (3); A clamp (5), the clamp (5) is installed behind the above-mentioned slurry stopper (4) and the clamp (5) is fixedly connected to the above-mentioned slurry stopper (4), and the clamp (5) and the above-mentioned inner sealing hole body (1) are a matching structure, wherein: The slurry stopper (4) has a double-cone truncated cone-shaped portion (6), wherein the upper opening of the double-cone truncated cone-shaped portion (6) has an outer diameter of 28 mm and an inner diameter of 24 mm, and the lower opening has an outer diameter of 24 mm and an inner diameter of 23 mm.
2. The inner sealed hole structure according to claim 1, characterized in that: The slurry stopper (4) is 500mm-700mm away from the tail end of the anchor cable body (3).
3. The inner sealed hole structure according to claim 2, characterized in that: The anchor cable body (3) is 21mm-22mm, and the diameter of the inner sealing hole body (1) is 32mm.
4. The inner sealed hole structure according to claim 3, characterized in that: The slurry stopper (4) further comprises a straight portion (7), the size of which is the same as that of the clamp (5).
5. The inner sealed hole structure according to claim 4, characterized in that: The outer surface of the clamp (5) is provided with anti-slip patterns.
6. The inner sealed hole structure according to claim 5, characterized in that: The clamp (5) has multiple sections of annular protrusions (8), the diameters of which increase from the inside to the outside along the radial direction of the through hole. The annular protrusion (8) located at the innermost radial side of the through hole is a matching structure with the inner sealing hole body (1).
7. The hollow grouting mining anchor cable based on the inner sealing hole structure is characterized by: The hollow grouting mining anchor cable comprises the inner sealing hole structure described in any one of claims 1 to 6.