Double-slope built-in anchor cable stop-grouting plug

Abstract

The utility model discloses a double-slope built-in anchor cable stop-grouting plug which comprises an inclined hole, and the inclined hole is formed in the surface of surrounding rock and is inclined in the drilling direction. The anchor cable is in a long strip shape and penetrates into the inclined hole from outside to inside; the stop-grouting plug body is installed on the anchor cable, and the stop-grouting plug body goes deep into the inclined hole along with the anchor cable and is located in the inclined hole before grouting. The structure is different from an external stop-grouting plug structure, the inclined hole is ingeniously used as a drilling form, and the stop-grouting plug body is designed to be of a two-stage inclined structure, so that the stop-grouting plug body more closely conforms to and is attached to the outline of the inner wall of the inclined hole, the leakage phenomenon caused by the fact that grout possibly passes through a small gap between the inclined hole and the stop-grouting plug body is effectively eradicated, and meanwhile, the structure is simple and convenient. The built-in grouting stopping mechanism is achieved, the tedious step of strictly controlling the grouting amount and the grouting pressure is omitted, the complexity and the technical difficulty of construction operation are remarkably reduced, and the whole construction process is smoother and more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor cable grouting plugs, in particular to a double-slope built-in anchor cable grouting plug. Background Art

[0002] Cable anchoring is a supporting structure widely used in underground engineering, geotechnical engineering and other fields. It mainly enhances the stability and safety of the structure by embedding high-strength materials such as steel strands into stable rock masses and using prestressed technology to provide stable support. Usually, drilling equipment is used to pre-drill holes, and then the anchor cables are inserted into the holes. After the grouting operation is completed, grouting is stopped by grouting plugs. Due to the use of an external grouting plug structure, the stiffness and strength requirements of the grouting plugs are not high.

[0003] However, the external anchor cable grouting structure has the following problems:

[0004] 1. Slurry leakage: During the external sealing grouting process, if there are cracks, pores or weak layers in the rock or soil around the borehole, the slurry may leak out through these channels, resulting in poor grouting effect. Leakage not only wastes grouting materials, but may also affect the reinforcement effect and project quality.

[0005] 2. Unstable sealing effect: The effect of external sealing depends largely on the construction personnel's operation skills. Improper selection of sealing materials or improper construction may cause the sealing to be insufficiently tight, resulting in leakage of slurry or failure to effectively inject into the intended area.

[0006] 3. Difficulty in construction: External sealing hole grouting requires precise control of grouting pressure and grouting volume to ensure that the slurry can be evenly and fully filled into the area to be reinforced. However, due to the complexity and uncertainty of geological conditions, it is difficult to achieve precise control during the construction process.

[0007] To this end, we provide double-slope built-in anchor grouting plugs to solve the above problems. Utility Model Content

[0008] In view of the problems existing in the above-mentioned prior art, the utility model provides a double-bevel built-in anchor cable grouting plug, which is different from the external grouting plug structure. It cleverly uses the inclined hole as the drilling form, and designs the grouting plug body to be a double-stage inclined structure, so that it can more closely conform to and fit the inner wall contour of the inclined hole, effectively preventing the grout from leaking through the tiny gap between the inclined hole and the grouting plug body, thereby significantly improving the quality and efficiency of the drilling operation. By realizing the built-in grouting mechanism, the cumbersome steps of strictly controlling the grouting volume and grouting pressure are eliminated, and the complexity and technical difficulty of the construction operation are significantly reduced, making the overall construction process smoother and more efficient.

[0009] In order to achieve the above-mentioned purpose, the double-slope built-in anchor grouting plug adopted by the utility model comprises:

[0010] An inclined hole is opened on the surface of the surrounding rock and is inclined along the drilling direction;

[0011] Anchor cable, which is in the shape of a long strip and is passed from outside to inside into the inclined hole;

[0012] The grouting stopper body is installed on the anchor cable. The grouting stopper body goes deep into the inclined hole along with the anchor cable and is located inside the inclined hole before grouting.

[0013] The above structure is different from the external stop plug structure. It cleverly uses the inclined hole as the drilling shape, and designs the stop plug body to be a double-stage inclined structure, so that it conforms to and fits the inner wall contour of the inclined hole more closely, effectively preventing the slurry from leaking through the tiny gap between the inclined hole and the stop plug body, thereby significantly improving the quality and efficiency of the drilling operation. By realizing the built-in stop grouting mechanism, the tedious steps of strictly controlling the grouting volume and grouting pressure are eliminated, and the complexity and technical difficulty of the construction operation are significantly reduced, making the overall construction process smoother and more efficient.

[0014] As a further optimization of the above scheme, the slurry stopper body includes a first inclined part and a second inclined part arranged along the drilling direction and cooperating with the above inclined hole. The inclined hole is drilled by a 32mm drill bit. The first lower opening outer diameter of the first inclined part is 32mm, the first lower opening inner diameter is 23mm, the first upper opening outer diameter is 28mm and the first upper opening inner diameter is 24mm. The length of the first inclined part is 150mm. The second lower opening outer diameter of the second inclined part is 28mm and the second lower opening inner diameter is 24mm. The second lower opening outer diameter is 26mm and the second lower opening outer diameter is 24mm. The length of the second inclined part is 10mm. By adopting a double inclined structure design, the slurry stopper body can better fit the inner wall of the inclined hole and provide stable support. Its gradually changing outer diameter and inner diameter enhance the friction with the inclined hole and prevent the slurry stopper body from sliding or loosening. This design significantly improves the stability and reliability of the product.

[0015] As a further optimization of the above-mentioned scheme, in view of the higher requirements of the built-in slurry stopper on the anti-buckling and anti-retreat performance, especially the stress-bending performance, the increased pressure may cause the slurry stopper to bend and move outward, thereby causing stress concentration problems caused by deformation, which may ultimately have an adverse effect on the service life of the slurry stopper. In view of this, the utility model also has an anti-deformation part connected to the tail end of the first inclined part, and the anti-deformation part includes an outer sheath, an inner cushion layer and a support layer, the outer sheath constitutes the outer layer of the first inclined part, the inner cushion layer constitutes the inner layer of the first inclined part, and the support layer is located between the above-mentioned outer sheath and the inner cushion layer. The outer sheath includes a smooth section at the front end and an anti-slip section connecting the smooth section. The support layer includes a support space and several support members installed inside the support space. Each support member is a solid cylindrical structure, and several support members are arranged in a circular array on the support layer. Two adjacent support members are in contact with each other. The design of the anti-deformation part significantly enhances the overall structural strength and stability of the slurry stopper body. Through multi-layer composite, support layer reinforcement, dual function of the outer sheath and other design means, the problem of easy deformation of the built-in slurry stopper under high-pressure environment is effectively solved, and the pressure resistance, deformation resistance and service life of the slurry stopper body are improved.

[0016] The double-slope built-in anchor grout stopper of the utility model has the following beneficial effects:

[0017] 1. The double-slope built-in anchor grouting plug of the utility model is different from the external grouting plug structure. It cleverly uses the inclined hole as the drilling shape, and designs the grouting plug body to be a double-stage inclined structure, so that it can more closely conform to and fit the inner wall contour of the inclined hole, effectively preventing the grout from leaking through the tiny gap between the inclined hole and the grouting plug body, thereby significantly improving the quality and efficiency of the drilling operation. By realizing the built-in grouting mechanism, the cumbersome steps of strictly controlling the grouting volume and grouting pressure are eliminated, and the complexity and technical difficulty of the construction operation are significantly reduced, making the overall construction process smoother and more efficient.

[0018] 2. The double-slope built-in anchor grout plug of the utility model adopts a double-slope structure design, so that the grout plug body can better fit the inner wall of the inclined hole and provide stable support. Its gradually changing outer diameter and inner diameter enhance the friction with the inclined hole and prevent the grout plug body from sliding or loosening. This design significantly improves the stability and reliability of the product.

[0019] 3. The double-slope built-in anchor grouting plug of the utility model has a cleverly designed anti-deformation part, which significantly enhances the overall structural strength and stability of the quality inspection room. Through multi-layer composite, support layer reinforcement, dual function of the outer sheath and other design methods, it effectively solves the problem of easy deformation of the built-in grouting plug under high-pressure environment, and improves the compression resistance, anti-deformation ability and service life of the grouting plug body.

[0020] With reference to the following description and drawings, a specific embodiment of the present invention is disclosed in detail, indicating the manner in which the principle of the present invention can be adopted. It should be understood that the scope of the embodiment of the present invention is not limited thereby, and the embodiment of the present invention includes many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a double-slope built-in anchor grout stopper;

[0022] Figure 2 This is a schematic diagram of the structure of the stop slurry plug body of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the anti-deformation part in the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the internal and external sheaths of the utility model.

[0025] In the figure: 1, inclined hole; 2, anchor cable; 3, slurry stopper body; 31, first inclined portion; 311, first lower opening; 312, first upper opening; 32, second inclined portion; 321, second lower opening; 322, second upper opening; 4, anti-deformation portion; 41, outer sheath; 411, smooth section; 412, anti-slip section; 42, inner cushion layer; 43, support layer; 431, support space; 432, support member. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the scope of the utility model.

[0027] 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.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification are only for the purpose of describing specific implementations and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] Please refer to the instruction manual Figure 1-4 The utility model proposes a first embodiment of an inclined built-in anchor grouting plug, the specific structure of which is as follows:

[0030] Design of inclined hole 1: an inclined hole 1 is opened on the surface of the surrounding rock, and the inclined hole 1 is penetrated in an inclined form along the preset drilling direction to ensure the adaptability of the installation of the anchor cable 2;

[0031] Anchor cable 2 configuration: A long anchor cable 2 is used, which penetrates into the inclined hole 1 from the outside and is installed on a fixed foundation as a grout stopper;

[0032] The grouting plug body 3 is designed with a bipolar inclined structure, which is directly installed on the anchor cable 2, penetrates into the inclined hole 1 along with the anchor cable 2, and is positioned in the inclined hole 1 before the grouting operation. By utilizing the shape of the inclined hole 1, the grouting plug body 3 can fit tightly against the inner wall of the inclined hole 1, effectively preventing the slurry from leaking through tiny gaps during the grouting process, thereby significantly improving the quality and efficiency of the drilling operation.

[0033] Furthermore, in order to optimize the grout stopping effect and structural stability, the grout stopping plug body 3 in this embodiment is subdivided into two parts:

[0034] The first inclined portion 31 is arranged along the drilling direction and closely matches the inclined hole 1. The specific parameters include: 32mm drill hole, the first lower opening 311 has an outer diameter of 32mm and an inner diameter of 23mm, the first upper opening 312 has an outer diameter of 28mm and an inner diameter of 24mm, and a length of 150mm. This design ensures that the initial section can tightly seal the inclined hole 1 and enhance the sealing performance.

[0035] The second inclined portion 32: follows the first inclined portion 31, adapting to the change in the depth of the inclined hole 1. The specific dimensions are: the second lower opening 321 (i.e., the first upper opening 312) has an outer diameter of 28mm and an inner diameter of 24mm, the second upper opening 322 is 26mm, but the inner diameter remains unchanged at 24mm, and the length is 10mm. This design further enhances the fit and support force with the inner wall of the inclined hole 1 through the change of the double inclined angle.

[0036] In addition, in view of the buckling, outward movement and stress concentration problems that the built-in grout stopper may face under high pressure, the utility model also introduces an anti-deformation part 4:

[0037] Anti-deformation part 4: an outer sheath 41, an inner cushion layer 42 and a support layer 43 are integrated at the tail end of the first inclined part 31. The outer sheath 41 is divided into a smooth section 411 and an anti-slip section 412, the former is easy to install, and the latter enhances friction; the inner cushion layer 42 protects the internal structure from direct impact; the support layer 43 is located between the two, providing the necessary strength support, effectively resisting deformation caused by external pressure, ensuring long-term stable operation of the stop plug, and extending its service life.

[0038] It should be noted that, in this embodiment, the above-mentioned support layer 43 includes a support space 431 and several support members 432 installed inside the support space 431, each support member 432 is a solid cylindrical structure, and several support members 432 are arranged in a ring array on the above-mentioned support layer 43, and two adjacent support members 432 are in contact with each other. The design of the above-mentioned anti-deformation part 4 significantly enhances the overall structural strength and stability of the quality inspection room, and through multi-layer composite, support layer 43 reinforcement, outer sheath 41 dual function and other design means, it effectively solves the problem of easy deformation of the built-in slurry stop plug under high-pressure environment, and improves the compression resistance, anti-deformation ability and service life of the slurry stop plug.

[0039] In summary, the present invention is different from the external stop grouting plug structure. It cleverly uses the inclined hole 1 as the drilling form, and designs the stop grouting plug body 3 as a double-stage inclined structure, so that it conforms to and fits the inner wall contour of the inclined hole 1 more closely, effectively preventing the slurry from leaking through the small gap between the inclined hole 1 and the stop grouting plug body 3, thereby significantly improving the quality and efficiency of the drilling operation. By realizing the built-in stop grouting mechanism, the cumbersome steps of strictly controlling the grouting volume and grouting pressure are eliminated, and the complexity and technical difficulty of the construction operation are significantly reduced, making the overall construction process smoother and more efficient.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Double-slope internal anchor cable (2) grout stopper, characterized in that: include: An inclined hole (1), the inclined hole (1) is opened on the surface of the surrounding rock and the inclined hole (1) is inclined along the drilling direction; An anchor cable (2), which is in the shape of a long strip and is inserted from the outside to the inside into the inclined hole (1); A grouting plug body (3) is installed on the anchor cable (2). The grouting plug body (3) goes deep into the inclined hole (1) along with the anchor cable (2) and is located inside the inclined hole (1) before grouting.

2. The double-slope internal anchor cable (2) grout stopper according to claim 1, characterized in that: The slurry stopper body (3) comprises a first inclined portion (31) and a second inclined portion (32) which are arranged along the drilling direction and form a matching structure with the inclined hole (1).

3. The double-slope internal anchor cable (2) grout stopper according to claim 2, characterized in that: The inclined hole (1) is drilled by a 32 mm drill bit, the outer diameter of the first lower opening (311) of the first inclined portion (31) is 32 mm, the inner diameter of the first lower opening (311) is 23 mm, the outer diameter of the first upper opening (312) is 28 mm, and the inner diameter of the first upper opening (312) is 24 mm, and the length of the first inclined portion (31) is 150 mm.

4. The double-slope internal anchor cable (2) grout stopper according to claim 3, characterized in that: The outer diameter of the second lower opening (321) of the second inclined portion (32) is 28 mm, while the inner diameter of the second lower opening (321) is 24 mm, the outer diameter of the second lower opening (321) is 26 mm, while the outer diameter of the second lower opening (321) is 24 mm, and the length of the second inclined portion (32) is 10 mm.

5. The double-slope internal anchor cable (2) grout stopper according to claim 4, characterized in that: The tail end of the first inclined portion (31) is also connected to an anti-deformation portion (4), and the anti-deformation portion (4) comprises an outer sheath (41), an inner cushion layer (42) and a support layer (43), wherein the outer sheath (41) constitutes the outer layer of the first inclined portion (31), the inner cushion layer (42) constitutes the inner layer of the first inclined portion (31), and the support layer (43) is located between the outer sheath (41) and the inner cushion layer (42).

6. The double-slope internal anchor cable (2) grout stopper according to claim 5, characterized in that: The outer sheath (41) comprises a smooth section (411) at the front end and an anti-slip section (412) connected to the smooth section.

7. The double-slope internal anchor cable (2) grout stopper according to claim 6, characterized in that: The support layer (43) comprises a support space (431) and a plurality of support members (432) installed inside the support space (431), each support member (432) is a solid cylindrical structure, and the plurality of support members (432) are arranged in a ring array on the support layer (43), and two adjacent support members (432) are in contact with each other.

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