Protective structure of anchor cable after construction at semi-underground powerhouse

Abstract

The utility model discloses a protection structure for an anchor cable after construction at a semi-underground powerhouse. The protection structure comprises the anchor cable, wherein the end part of the anchor cable penetrates through the exterior of a wall rock layer; anti-corrosion grease is arranged outside the end portion, penetrating through the wall rock layer, of the anchor cable, and the anti-corrosion grease is wrapped by a sleeve assembly. The bottom sleeve and the top sleeve are screwed to form a length-adjustable sleeve assembly used for sleeving an anchor cable, the inner sealing ring prevents the anti-corrosion grease from leaking from a screwing gap between the top sleeve internal thread and the bottom sleeve external thread, the cap blocks the top sleeve, and the anti-corrosion grease wraps exposed sections of anchor cables with different lengths. The problem that in the prior art, the length of a sleeve cannot be adjusted to be matched with anchor cable exposed sections with different lengths is solved.

Description

Technical Field

[0001] This utility model relates to a protective structure for anchor cables after construction in a semi-underground factory building, belonging to the field of anchor cable construction technology for semi-underground factory buildings. Background Technology

[0002] When the construction of the vertical hydro-generator 11 requires the lower half to be underground, the stability of the semi-underground powerhouse 12 space must be ensured. Therefore, anchor cables 13 need to be implanted into the rock strata on the inner side wall of the semi-underground powerhouse. (See...) Figure 3 As shown. After the anchor cables are installed in the semi-underground factory, to prevent the ends of the anchor cables from rusting before they are covered with concrete, the outside of the anchor cables must be wrapped with anti-corrosion grease.

[0003] The prior art can be found in Chinese Patent Publication No. CN209260705U. Although the sleeve can be detachably connected to the anchor to wrap the exposed section of the anchor cable with anti-corrosion grease, the sleeve cannot be adjusted in length to match the exposed section of the anchor cable of different lengths. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a protective structure for anchor cables after construction in a semi-underground factory.

[0005] This utility model is achieved through the following technical solution.

[0006] This utility model provides a protective structure for anchor cables after construction in a semi-underground factory building, comprising:

[0007] Anchor cable with its end penetrating outside the wall rock layer;

[0008] The ends of the anchor cables that penetrate the rock strata are covered with anti-corrosion grease, and the anti-corrosion grease is wrapped with a sleeve assembly.

[0009] The anti-corrosion grease fills and wraps the outside of the anchor cable and the gap between the anchor cables.

[0010] The sleeve assembly includes a bottom sleeve and a top sleeve that are sleeved on the outside of the anchor cable. The top sleeve has an internal thread, and the bottom sleeve has an external thread that engages with the internal thread of the top sleeve to allow for screwing, expansion, and contraction adjustment.

[0011] An inner sealing ring is fixed at the end of the bottom sleeve inside the top sleeve, and the inner sealing ring is in elastic and tight contact between the top sleeve and the bottom sleeve.

[0012] The bottom sleeve is fixed to the rock on the wall layer by expansion bolts.

[0013] The top sleeve end, away from the bottom sleeve, is press-fitted with a cap that blocks the top sleeve and prevents corrosion-resistant grease.

[0014] The bottom of the casing, which is close to the rock wall, has an outer sealing ring at the bottom, which seals between the bottom casing and the rock wall.

[0015] The beneficial effects of this utility model are as follows: the bottom sleeve and the top sleeve are screwed together to form an adjustable length sleeve assembly for wearing over the anchor cable. The inner sealing ring prevents the anti-corrosion grease from leaking from the gap between the inner thread of the top sleeve and the outer thread of the bottom sleeve. The cap blocks the top sleeve, so that the anti-corrosion grease can wrap the exposed sections of anchor cables of different lengths, which solves the problem that the sleeve of the prior art cannot be adjusted in length to match the exposed sections of anchor cables of different lengths. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional distribution of this utility model;

[0018] Figure 3 This is a schematic diagram showing the distribution of anchor cables in the semi-underground factory building;

[0019] In the diagram: 1-Anticorrosion grease; 11-Vertical hydro-generator; 12-Semi-underground powerhouse; 13-Anchor cable; 14-Rock stratum; 2-Bottom sleeve; 21-Inner sealing ring; 22-Expansion bolt; 23-Outer sealing ring; 3-Top sleeve; 31-Cap. Detailed Implementation

[0020] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0021] like Figures 1 to 2 As shown.

[0022] This application discloses a protective structure for anchor cables after construction in a semi-underground factory building, comprising:

[0023] An anchor cable 13 is inserted into the inner wall rock stratum 14 of the semi-underground factory building 12, with the end of the anchor cable 13 penetrating outside the wall rock stratum 14.

[0024] The end of the anchor cable 13 that penetrates the rock wall 14 is covered with anti-corrosion grease 1. The anti-corrosion grease 1 fills and wraps the outside of the anchor cable 13 and the gaps between the anchor cables 13 to prevent the anchor cable 13 from contacting the outside air and corroding and rusting.

[0025] It also includes a bottom sleeve 2 and a top sleeve 3 that are fitted over the outside of the anchor cable 13. The top sleeve 3 has an internal thread, and the bottom sleeve 2 has an external thread that can be screwed into the internal thread of the top sleeve 3 for adjustment of expansion and contraction.

[0026] An inner sealing ring 21 is fixed at the end of the bottom sleeve 2 located inside the top sleeve 3. The inner sealing ring 21 prevents the anti-corrosion grease 1 from leaking from the gap between the inner thread of the top sleeve 3 and the outer thread of the bottom sleeve 2.

[0027] The bottom sleeve 2 and the top sleeve 3 are fitted outside the anchor cable 13, and the bottom sleeve 2 is fixed to the rock on the wall rock layer 14 by expansion bolts 22.

[0028] The top sleeve 3, which is away from the bottom sleeve 2, is fitted with a cap 31 by an interference fit. The cap 31 blocks the top sleeve 3. When it is necessary to observe the anti-corrosion grease 1, the cap 31 is removed from the end of the top sleeve 3.

[0029] Since the bottom sleeve 2 and the top sleeve 3 are screwed together to form an adjustable length sleeve assembly for wearing over the anchor cable 13, the inner sealing ring 21 prevents the anti-corrosion grease 1 from leaking from the gap between the inner thread of the top sleeve 3 and the outer thread of the bottom sleeve 2. The cap 31 blocks the top sleeve 3, so that the anti-corrosion grease 1 can wrap the exposed sections of the anchor cable 13 of different lengths, which solves the problem that the sleeve of the existing technology cannot be adjusted in length to match the exposed sections of anchor cables of different lengths.

[0030] The bottom of the bottom sleeve 2, which is close to the rock wall layer 14, has an outer sealing ring 23. The outer sealing ring 23 is elastically deformed under compression to ensure that the bottom sleeve 2 and the rock wall layer 14 are in contact and sealed.

Claims

1. A protection structure for an anchor cable after construction at a semi-underground powerhouse, characterized in that, include: An anchor cable (13) with its end penetrating outside the wall rock layer (14); The end of the anchor cable (13) that penetrates the rock wall (14) is covered with anti-corrosion grease (1), and the anti-corrosion grease (1) is wrapped with a sleeve assembly.

2. The anchoring cable protection structure according to claim 1, wherein: The anti-corrosion grease (1) fills and wraps the outside of the anchor cable (13) and the gaps between the anchor cables (13).

3. The anchoring cable protection structure according to claim 1, wherein: The sleeve assembly includes a bottom sleeve (2) and a top sleeve (3) that are sleeved on the outside of the anchor cable (13). The top sleeve (3) has an internal thread, and the bottom sleeve (2) has an external thread that can be screwed into the internal thread of the top sleeve (3) for adjustment of expansion and contraction.

4. The anchorage cable protection structure according to claim 3, wherein: An inner sealing ring (21) is fixed at the end of the bottom sleeve (2) located inside the top sleeve (3), and the inner sealing ring (21) is elastically and tightly in contact between the top sleeve (3) and the bottom sleeve (2).

5. The anchorage cable protection structure according to claim 4, wherein: The bottom sleeve (2) is fixed to the rock on the wall rock layer (14) by expansion bolts (22).

6. The anchorage cable protection structure according to claim 4, wherein: The top sleeve (3) located away from the bottom sleeve (2) is fitted with a cap (31) which blocks the top sleeve (3) and prevents the anti-corrosion grease (1).

7. The anchoring cable protection structure according to claim 5, wherein: The bottom sleeve (2) facing the wall rock layer (14) has an outer sealing ring (23) at the bottom, which seals between the bottom sleeve (2) and the wall rock layer (14).

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