Sealing structure and anchor cable device with same

Abstract

The utility model provides a sealing structure and an anchor cable device with the sealing structure, the sealing structure is suitable for the anchor cable device, the anchor cable device comprises an anchor cable, the sealing structure comprises a sealing component, the sealing component comprises an inserting part, and the inserting part is provided with a first penetrating hole; the sealing part is a flexible part; the inner diameter of the first penetrating hole is d1, the outer diameter of the anchor cable is d2, and 0 < d1 < = d2; the maximum outer diameter of the insertion part is d3, the inner diameter of the drill hole close to the inlet is d4, and d4 is larger than d2 and smaller than or equal to d3. The anchor cable is inserted into a drill hole of the surrounding rock of the roadway; the insertion part is used for being inserted into a drill hole; the first penetrating hole is formed, so that the anchor cable penetrates through the first penetrating hole and then is inserted into the drill hole; the inner wall of the first penetrating hole is tightly attached to the outer wall of the anchor cable, and the outer wall, with the largest outer diameter, of the inserting part is tightly attached to the inner wall of the drill hole, so that the problem of grout leakage or grout runout in the grouting process in the anchor cable technology in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of grouting, in particular to a sealing structure and an anchor cable device having the same. Background Art

[0002] As a common support form in coal mines, anchor cables are widely used in the coal mining industry because of their advantages of quick installation and high strength. At present, with the increase in the depth of coal mining, the tunnels show soft rock creep characteristics and the deformation of the tunnels is large. Simple anchor cable support can no longer meet the requirements of support strength.

[0003] In the existing technology, in order to address the problem of large deformation in soft rock tunnels, full-length anchoring technology of anchor cables has been gradually developed. Grouting is mostly used on site to achieve full-length anchoring. Grouting can not only improve the anchoring force of the anchor cable, but also fill the internal cracks of the surrounding rock and improve the integrity of the rock mass; it can also block the seepage channels to achieve water blocking, which plays a great role in soft rock control and has significant engineering effects.

[0004] However, the grouting method in the prior art also has some problems, especially in terms of sealing and plugging. The sealing effect directly affects the grouting effect. The various types of grouting plugs currently used cannot adapt to various complex changing conditions. There will always be leakage and grouting, and the full-length anchoring is not achieved in the true sense. During the grouting process, sometimes the slurry will leak out from the gap between the grouting plug and the drilled hole, behind the anchor cable tray, and the gap on the surface of the shotcrete layer. The slurry flows out from the hole before reaching the anchoring section of the anchor cable, making the crack filling and grouting effect substandard, and failing to achieve the expected grouting pressure, wasting manpower and material resources, causing waste of grouting materials, and the time and energy spent cannot achieve the expected goal; it also makes the anchor cable preload force fail to meet the design requirements, greatly reducing the support quality, and is not conducive to underground safety production. Utility Model Content

[0005] The main purpose of the utility model is to provide a sealing structure and an anchor cable device having the same, so as to solve the problem of grout leakage or grout running during the grouting process of the anchor cable technology in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a sealing structure is provided, which is suitable for an anchor device, the anchor device includes an anchor, and the anchor is used to be inserted into a borehole in the surrounding rock of a tunnel, and the sealing structure includes: a sealing component, including an insertion part for being inserted into the borehole, the insertion part having a first penetration hole, so that the anchor is inserted into the borehole after passing through the first penetration hole; the sealing component is a flexible part; wherein, the inner diameter of the first penetration hole is d1, and the outer diameter of the anchor is d2, 0<d1≤d2, so that the inner wall of the first penetration hole is in close contact with the outer wall of the anchor; the maximum outer diameter of the insertion part is d3, and the inner diameter of the borehole is d4, d2<d4≤d3, so that the outer wall of the insertion part at the maximum outer diameter is in close contact with the inner wall of the borehole.

[0007] Furthermore, the anchor cable includes a grouting pipe and an anchor, the grouting pipe is sleeved on the anchor to inject grout into the borehole through the channel between the grouting pipe and the anchor; wherein the insertion portion is sleeved on the outside of the grouting pipe through the first penetration hole, and the outer diameter of the grouting pipe is d2, so that the inner wall of the first penetration hole is in close contact with the outer wall of the grouting pipe.

[0008] Furthermore, the insertion portion extends in the direction in which the anchor is extended; wherein: along the direction perpendicular to the extension direction of the insertion portion, the cross-section of the insertion portion is annular, so that the insertion portion can seal the borehole and the grouting pipe along the circumferential direction; and / or along the extension direction of the insertion portion, the length of the insertion portion is L1, the length of the grouting pipe is L2, 0<L1<L2, so that the slurry injected into the borehole can be sealed by the insertion portion.

[0009] Furthermore, the insertion portion extends along the extension direction of the anchor; wherein, along the extension direction of the insertion portion, the outer diameter of the insertion portion gradually decreases, so that when the insertion portion is inserted into the drill hole, the largest outer diameter of the insertion portion is stuck at the entrance of the drill hole to seal the entrance of the drill hole.

[0010] Furthermore, the anchor cable device also includes an anchor cable tray, which is sleeved on the anchor cable so that when the anchor cable is inserted into the borehole, the anchor cable tray is arranged on the outside of the tunnel surrounding rock; the sealing component also includes: a sealing part, which is connected to the maximum outer diameter of the insertion part, and the sealing part has a second penetration hole, and the second penetration hole is connected to the first penetration hole, so that the anchor cable passes through the second penetration hole and the first penetration hole and then is inserted into the borehole; wherein, along the radial direction of the borehole, the minimum length of the sealing part is S1, d4<S1, so that when the anchor cable is inserted into the borehole, the sealing part is clamped between the anchor cable tray and the outer wall of the tunnel surrounding rock to seal the entrance of the borehole.

[0011] Furthermore, the middle part of the anchor tray has a recessed portion that is recessed toward a side away from the tunnel surrounding rock, and the sealing portion includes: a boss, which is arranged corresponding to the recessed portion, and the shape and size of the boss are adapted to the shape and size of the recessed portion, so that when the sealing portion is clamped between the anchor tray and the outer wall of the tunnel surrounding rock, the boss is embedded in the recessed portion; the second penetration hole is arranged corresponding to the mounting hole arranged on the recessed portion.

[0012] Furthermore, the outer circumference of the anchor cable tray is rectangular, and the outer circumference of the sealing portion is rectangular; or the outer circumference of the anchor cable tray is circular, and the outer circumference of the sealing portion is circular.

[0013] Furthermore, the outer circumference of the anchor cable tray is a square, and the side length of the anchor cable tray is S2; the outer circumference of the blocking portion is a square, and the side length of the blocking portion is S3, S1≤S2<S3, so that the blocking portion protrudes from the anchor cable tray along the circumferential direction.

[0014] Furthermore, the sealing component is made of rubber; wherein: the sealing component is injection molded; and / or the sealing component is integrally molded.

[0015] According to another aspect of the utility model, an anchor cable device is provided, comprising an anchor cable, the anchor cable being used to be inserted into a borehole in the surrounding rock of a tunnel, the anchor cable device also comprising: an anchor cable tray, sleeved on the anchor cable; the above-mentioned sealing structure, the sealing structure comprising a sealing component, the insertion portion of the sealing component being arranged between the anchor cable and the borehole; the sealing portion of the sealing component being arranged between the anchor cable tray and the side wall of the surrounding rock of the tunnel; a full anchor lock, arranged on the anchor cable; and an anchoring end, arranged at an end of the borehole away from the entrance.

[0016] Applying the technical solution of the utility model, the utility model provides a sealing structure, which is suitable for an anchor device, the anchor device includes an anchor, and the sealing structure includes a sealing component, wherein the sealing component includes an insertion part, the insertion part has a first through hole; the sealing component is a flexible part; the inner diameter of the first through hole is d1, the outer diameter of the anchor is d2, 0<d1≤d2; the maximum outer diameter of the insertion part is d3, the inner diameter of the drilled hole is d4, d2<d4≤d3. Anchor cables are arranged to be inserted into the borehole of the tunnel surrounding rock; an insertion part is arranged to be inserted into the borehole; a first penetration hole is arranged so that the anchor cable passes through the first penetration hole and is inserted into the borehole; the inner diameter of the first penetration hole is set to be smaller than or equal to the outer diameter of the anchor cable so that the inner wall of the first penetration hole is in close contact with the outer wall of the anchor cable; the inner diameter of the borehole near the entrance is set to be smaller than or equal to the maximum outer diameter of the insertion part so that the outer wall of the insertion part at the maximum outer diameter is in close contact with the inner wall of the borehole, thereby blocking the entrance of the borehole, preventing leakage and slurry leakage during the grouting process, achieving full-length anchoring, avoiding waste of grouting materials, reducing working costs, and thus solving the problem of leakage or slurry leakage in the grouting process of the anchor cable technology in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic cross-sectional structure diagram of an embodiment of an anchor cable device according to the prior art is shown;

[0019] Figure 2 A schematic cross-sectional structure diagram of an embodiment of an anchor cable device according to the utility model is shown;

[0020] Figure 3 A structural schematic diagram showing a sealing structure of an anchor cable device according to the utility model from a first perspective;

[0021] Figure 4 A schematic cross-sectional structure diagram of the sealing structure of the anchor cable device according to the utility model is shown;

[0022] Figure 5 A second perspective structural schematic diagram of the sealing structure of the anchor cable device according to the utility model is shown;

[0023] Figure 6 A third perspective structural schematic diagram of the sealing structure of the anchor cable device according to the utility model is shown.

[0024] The above drawings include the following reference numerals:

[0025] 1. Anchor cable; 11. Grouting pipe; 12. Anchor; 13. Grouting inlet; 2. Tunnel surrounding rock; 21. Drill hole; 3. Sealing component; 31. Insertion part; 32. First penetration hole; 33. Blocking part; 34. Second penetration hole; 35. Boss; 4. Anchor cable tray; 5. Full anchor lock; 6. Anchor end. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Please refer to Figures 2 to 6The utility model provides a sealing structure suitable for an anchor cable device, the anchor cable device includes an anchor cable 1, the anchor cable 1 is used to be inserted into a borehole 21 of a tunnel surrounding rock 2, and the sealing structure includes: a sealing component 3, including an insertion portion 31 for being inserted into the borehole 21, the insertion portion 31 has a first penetration hole 32, so that the anchor cable 1 passes through the first penetration hole 32 and is inserted into the borehole 21; the sealing component 3 is a flexible member; wherein, the inner diameter of the first penetration hole 32 is d1, the outer diameter of the anchor cable 1 is d2, 0<d1≤d2, so that the inner wall of the first penetration hole 32 is in close contact with the outer wall of the anchor cable 1; the maximum outer diameter of the insertion portion 31 is d3, the inner diameter of the borehole 21 is d4, d2<d4≤d3, so that the outer wall of the insertion portion 31 at the maximum outer diameter is in close contact with the inner wall of the borehole 21.

[0028] The utility model provides a sealing structure, which is suitable for an anchor cable device, the anchor cable device includes an anchor cable 1, and the sealing structure includes a sealing component 3. The anchor cable 1 is arranged to be inserted into a borehole 21 of a tunnel surrounding rock 2; an insertion portion 31 is arranged to be inserted into the borehole 21; a first penetration hole 32 is arranged so that the anchor cable 1 is inserted into the borehole 21 after passing through the first penetration hole 32; the inner diameter of the first penetration hole 32 is set to be less than or equal to the outer diameter of the anchor cable 1 so that the inner wall of the first penetration hole 32 is in close contact with the outer wall of the anchor cable 1; the inner diameter of the borehole 21 is set to be less than or equal to the maximum outer diameter of the insertion portion 31 so that the outer wall of the insertion portion 31 at the maximum outer diameter is in close contact with the inner wall of the borehole 21, thereby blocking the entrance of the borehole 21, preventing leakage and slurry running during the grouting process, achieving full-length anchoring, avoiding waste of grouting materials, reducing work costs, and thus solving the problem of leakage or slurry running in the grouting process of the anchor cable technology in the prior art.

[0029] Specifically, in order to realize grouting in the borehole 21, the anchor cable 1 includes a grouting pipe 11 and an anchor 12, and the grouting pipe 11 is sleeved on the anchor 12; the inner diameter of the grouting pipe 11 is d5, and the outer diameter of the anchor 12 is d6, 0<d6<d5, so as to grout into the borehole 21 through the channel between the grouting pipe 11 and the anchor 12; wherein, the insertion portion 31 is sleeved on the outside of the grouting pipe 11 through the first penetration hole 32, and the outer diameter of the grouting pipe 11 is d2, so that the inner wall of the first penetration hole 32 is in close contact with the outer wall of the grouting pipe 11.

[0030] The grouting pipe 11 is a one-inch steel pipe, one end of the grouting pipe 11 is provided with threads, the other end of the grouting pipe 11 is not provided with threads, and the end without threads is inserted into the borehole 21.

[0031] Furthermore, the insertion portion 31 in the embodiment of the present application extends along the extension direction of the anchor 12; wherein: along the extension direction perpendicular to the insertion portion 31, the cross-section of the insertion portion 31 is annular, so that the insertion portion 31 seals the borehole 21 and the grouting pipe 11 along the circumferential direction; along the extension direction of the insertion portion 31, the length of the insertion portion 31 is L1, and the length of the grouting pipe 11 is L2, 0<L1<L2, so that the slurry output by the grouting pipe 11 can be blocked by the insertion portion 31 when it flows back in the opposite direction from the entrance to the outlet of the borehole 21.

[0032] Generally, if Figure 3 and Figure 4 As shown, the insertion portion 31 extends along the extension direction of the anchor 12; wherein, along the extension direction of the insertion portion 31, the outer diameter of the insertion portion 31 gradually decreases, so that when the insertion portion 31 is inserted into the borehole 21, the largest outer diameter of the insertion portion 31 is stuck at the entrance of the borehole 21 to block the entrance of the borehole 21.

[0033] Specifically, in order to fix the anchor cable 1 in the borehole 21 so as to facilitate grouting in the borehole 21, the anchor cable device also includes an anchor cable tray 4, which is sleeved on the anchor cable 1 so that when the anchor cable 1 is inserted into the borehole 21, the anchor cable tray 4 is arranged on the outside of the tunnel surrounding rock 2; the sealing component 3 also includes a sealing portion 33, which is connected to the maximum outer diameter of the insertion portion 31, and the sealing portion 33 has a second penetration hole 34, which is connected to the first penetration hole 32, so that the anchor cable 1 passes through the second penetration hole 34 and the first penetration hole 32 and then is inserted into the borehole 21.

[0034] Among them, along the radial direction of the borehole 21, the minimum length of the sealing portion 33 is S1, d4<S1, so that when the anchor cable 1 is inserted into the borehole 21, the sealing portion 33 is clamped between the anchor cable tray 4 and the outer wall of the tunnel surrounding rock 2 to seal the entrance of the borehole 21.

[0035] Furthermore, the middle part of the anchor tray 4 in the embodiment of the present application has a recessed portion which is recessed toward the side away from the tunnel surrounding rock 2, and a mounting hole is provided in the middle part of the recessed portion, and the anchor 1 passes through the anchor tray 4 through the mounting hole; the sealing portion 33 includes a boss 35, and the boss 35 is provided corresponding to the recessed portion, and the shape and size of the boss 35 are adapted to the shape and size of the recessed portion, so that when the sealing portion 33 is clamped between the anchor tray 4 and the outer wall of the tunnel surrounding rock 2, the boss 35 is embedded in the recessed portion; the second penetration hole 34 is provided corresponding to the mounting hole.

[0036] Optionally, the specific structure of the blocking portion 33 in the embodiment of the present application is:

[0037] A specific implementation structure is: the outer periphery of the anchor cable tray 4 is rectangular, and the outer periphery of the blocking portion 33 is rectangular;

[0038] Another specific implementation structure is that the outer circumference of the anchor cable tray 4 is circular, and the outer circumference of the blocking portion 33 is circular.

[0039] Preferably, if Figure 5 and Figure 6 As shown, the outer circumference of the anchor tray 4 in the embodiment of the present application is a square, and the side length of the anchor tray 4 is S2; the outer circumference of the sealing portion 33 is a square, and the side length of the sealing portion 33 is S3, S1≤S2<S3, so that the sealing portion 33 protrudes from the anchor tray 4 along the circumferential direction.

[0040] Optionally, the sealing component 3 is made of rubber material so that the sealing component 3 is a flexible part; the sealing component 3 is injection molded; the sealing component 3 is integrally molded so that the sealing component 3 is elastic, can produce a large deformation under a very small external force, is non-polluting, and can play a better sealing role.

[0041] The utility model also provides an anchor cable device. Figure 1 The anchor cable device in the prior art does not have a sealing structure. Figure 2 The anchor device is provided with a sealing structure in the embodiment of the present application, the anchor device includes an anchor 1, the anchor 1 is used to be inserted into a borehole 21 of a tunnel surrounding rock 2, the anchor device also includes an anchor tray 4, the above-mentioned sealing structure, a full anchor lock 5 and an anchor end 6, the anchor tray 4 is sleeved on the anchor 1; the sealing structure includes a sealing component 3, the insertion portion 31 of the sealing component 3 is arranged between the anchor 1 and the borehole 21; the blocking portion 33 of the sealing component 3 is arranged between the anchor tray 4 and the side wall of the tunnel surrounding rock 2; the full anchor lock 5 is arranged on the anchor 1, and the full anchor lock 5 is arranged on the side of the anchor tray 4 away from the tunnel surrounding rock 2; the grouting inlet 13 of the grouting pipe 11 of the anchor 1 is arranged on the full anchor lock 5, so as to grout into the borehole 21 through the grouting inlet 13; the anchor end 6 is arranged at one end of the borehole 21 away from the entrance, and at least part of the anchor 1 is inserted in the anchor end 6.

[0042] When in use, firstly, a borehole 21 is constructed in the surrounding rock 2 of the tunnel, and the anchor 12 is inserted into the borehole so that one end of the anchor 12 is anchored in the anchor end 6 formed at the bottom of the borehole 21; secondly, the grouting pipe 11, the sealing component 3 and the anchor cable tray 4 are installed in sequence so that the side of the anchor cable tray 4 with the recessed portion is pressed on the boss of the sealing component 3; the spring connects the full anchor lock 5 to the grouting pipe 11; finally, the anchor cable tensioning jack applies an anchoring force to the anchor cable device, and the anchoring force is transmitted to the sealing component 3 through the anchor cable tray 4 to fix the sealing component 3 and finally block the borehole 21. During grouting, the slurry is injected into the channel between the grouting pipe 11 and the anchor 12 through the grouting inlet 13, and the grouting work is completed by pressurization to achieve full-length anchoring of the anchor cable 1.

[0043] The anchor 12 has an outer diameter d6 of The length L2 of the grouting pipe 11 is 1000mm, and the outer diameter d2 is The inner diameter d5 is The diameter of the borehole 21 is The drill is used to drill, and the inner diameter d4 of the hole is generally 48mm; the maximum outer diameter d3 of the insertion part 31 of the sealing component 3 is 46mm, the minimum outer diameter is 36mm, the wall thickness is 5mm, and the length L1 is 150mm; the inner diameter d1 of the first penetration hole 32 and the second penetration hole 34 are both 36mm; the blocking part 33 of the sealing component 3 is a square with a side length S3 of 320mm×320mm and a thickness of 10mm, while the anchor tray 4 is a square with a side length S2 of 300mm×300mm, and the sealing component 3 protrudes from the anchor tray 4 by 10mm along the circumferential direction to achieve a sealing effect.

[0044] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0045] The utility model provides a sealing structure, which is suitable for an anchor cable device. The anchor cable device includes an anchor cable 1, and the sealing structure includes a sealing component 3, wherein the sealing component 3 includes an insertion portion 31, and the insertion portion 31 has a first penetration hole 32; the sealing component 3 is a flexible member; the inner diameter of the first penetration hole 32 is d1, the outer diameter of the anchor cable 1 is d2, and 0<d1≤d2; the maximum outer diameter of the insertion portion 31 is d3, the inner diameter of the drill hole 21 is d4, and d2<d4≤d3. The anchor cable 1 is arranged to be inserted into the borehole 21 of the tunnel surrounding rock 2; the insertion part 31 is arranged to be inserted into the borehole 21; the first penetration hole 32 is arranged so that the anchor cable 1 can be inserted into the borehole 21 after passing through the first penetration hole 32; the inner diameter of the first penetration hole 32 is set to be less than or equal to the outer diameter of the anchor cable 1 so that the inner wall of the first penetration hole 32 is in close contact with the outer wall of the anchor cable 1; the inner diameter of the borehole 21 is set to be less than or equal to the maximum outer diameter of the insertion part 31 so that the outer wall of the insertion part 31 at the maximum outer diameter is in close contact with the inner wall of the borehole 21, thereby blocking the entrance of the borehole 21, preventing leakage and slurry leakage during the grouting process, achieving full-length anchoring, avoiding waste of grouting materials, reducing working costs, and thus solving the problem of leakage or slurry leakage in the anchor cable technology in the prior art during the grouting process.

[0046] The sealing structure provided by the utility model is simple and fast, novel in design, strong in practicality, safe and reliable, and has strong environmental adaptability. It can be quickly installed during the construction of anchor cables, saving time and effort, and has wide practicality in this technical field; and it effectively solves the problems of slurry leakage and slurry running during grouting, which greatly improves the grouting effect, saves grouting materials, and saves material costs; furthermore, the sealing structure has good sealing effect, can truly realize the full-length anchoring of the anchor cable, improve the preload force of the anchor cable, ensure the quality of underground tunnel support, and is conducive to underground safe production.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sealing structure, suitable for an anchor cable device, the anchor cable device comprising an anchor cable (1), the anchor cable (1) being used to be inserted into a borehole (21) of a tunnel surrounding rock (2), characterized in that: The sealing structure comprises: The sealing component (3) comprises an insertion portion (31) for being inserted into the borehole (21), wherein the insertion portion (31) has a first penetration hole (32) so that the anchor cable (1) can be inserted into the borehole (21) after passing through the first penetration hole (32); the sealing component (3) is a flexible member; The inner diameter of the first drilling hole (32) is d1, the outer diameter of the anchor cable (1) is d2, and 0<d1≤d2, so that the inner wall of the first drilling hole (32) is in close contact with the outer wall of the anchor cable (1); the maximum outer diameter of the insertion part (31) is d3, and the inner diameter of the drill hole (21) is d4, and d2<d4≤d3, so that the outer wall of the insertion part (31) at the maximum outer diameter is in close contact with the inner wall of the drill hole (21).

2. The sealing structure according to claim 1, characterized in that: The anchor cable (1) comprises a grouting pipe (11) and an anchor (12); the grouting pipe (11) is sleeved on the anchor (12) so as to inject grout into the borehole (21) through a channel between the grouting pipe (11) and the anchor (12); The insertion portion (31) is sleeved on the outside of the grouting pipe (11) through the first penetration hole (32), and the outer diameter of the grouting pipe (11) is d2, so that the inner wall of the first penetration hole (32) is in close contact with the outer wall of the grouting pipe (11).

3. The sealing structure according to claim 2, characterized in that: The insertion portion (31) extends along the direction in which the anchor (12) extends; wherein: The cross section of the insertion portion (31) is annular along a direction perpendicular to the extension direction of the insertion portion (31), so that the insertion portion (31) seals the borehole (21) and the grouting pipe (11) along the circumferential direction; and / or Along the extension direction of the insertion portion (31), the length of the insertion portion (31) is L1, the length of the grouting pipe (11) is L2, and 0<L1<L2, so that the grout injected into the borehole (21) is blocked by the insertion portion (31).

4. The sealing structure according to claim 2, characterized in that: The insertion portion (31) extends along the direction in which the anchor (12) extends; The outer diameter of the insertion portion (31) gradually decreases along the extension direction of the insertion portion (31), so that when the insertion portion (31) is inserted into the borehole (21), the part with the largest outer diameter of the insertion portion (31) is stuck at the entrance of the borehole (21) to block the entrance of the borehole (21).

5. The sealing structure according to claim 1, characterized in that: The anchor cable device further comprises an anchor cable tray (4), wherein the anchor cable tray (4) is sleeved on the anchor cable (1), so that when the anchor cable (1) is inserted into the borehole (21), the anchor cable tray (4) is arranged outside the tunnel surrounding rock (2); the sealing component (3) further comprises: a blocking portion (33) connected to the maximum outer diameter of the insertion portion (31), the blocking portion (33) having a second penetration hole (34), the second penetration hole (34) being connected to the first penetration hole (32), so that the anchor cable (1) passes through the second penetration hole (34) and the first penetration hole (32) and then is inserted into the borehole (21); Wherein, along the radial direction of the borehole (21), the minimum length of the sealing portion (33) is S1, and d4 is less than S1, so that when the anchor cable (1) is inserted into the borehole (21), the sealing portion (33) is clamped between the anchor cable tray (4) and the outer wall of the tunnel surrounding rock (2) to seal the entrance of the borehole (21).

6. The sealing structure according to claim 5, characterized in that: The middle part of the anchor cable tray (4) has a recessed portion that is recessed toward a side away from the tunnel surrounding rock (2), and the blocking portion (33) comprises: A boss (35), the boss (35) is arranged corresponding to the recessed portion, and the shape and size of the boss (35) are adapted to the shape and size of the recessed portion, so that when the sealing portion (33) is clamped between the anchor cable tray (4) and the outer wall of the tunnel surrounding rock (2), the boss (35) is embedded in the recessed portion; the second penetration hole (34) is arranged corresponding to the mounting hole arranged on the recessed portion.

7. The sealing structure according to claim 5, characterized in that: The outer circumference of the anchor cable tray (4) is rectangular, and the outer circumference of the blocking portion (33) is rectangular; or The outer circumference of the anchor cable tray (4) is circular, and the outer circumference of the blocking portion (33) is circular.

8. The sealing structure according to claim 7, characterized in that: The outer circumference of the anchor cable tray (4) is a square, and the side length of the anchor cable tray (4) is S2; the outer circumference of the blocking portion (33) is a square, and the side length of the blocking portion (33) is S3, S1≤S2<S3, so that the blocking portion (33) protrudes from the anchor cable tray (4) along the circumferential direction.

9. The sealing structure according to any one of claims 1 to 8, characterized in that: The sealing component (3) is made of rubber; wherein: The sealing component (3) is injection molded; and / or The sealing component (3) is integrally formed.

10. An anchor cable device, comprising an anchor cable (1), wherein the anchor cable (1) is used to be inserted into a borehole (21) in a tunnel surrounding rock (2), characterized in that: The anchor cable device also includes: An anchor cable tray (4) is sleeved on the anchor cable (1); The sealing structure according to any one of claims 1 to 9, comprising a sealing component (3), an insertion portion (31) of the sealing component (3) being arranged between the anchor cable (1) and the borehole (21); and a blocking portion (33) of the sealing component (3) being arranged between the anchor cable tray (4) and the side wall of the tunnel surrounding rock (2); A full anchor lock (5) arranged on the anchor cable (1); The anchoring end (6) is arranged at an end of the borehole (21) away from the entrance.

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