Side slope fore shaft supporting structure

Abstract

The utility model provides a side slope fore shaft supporting structure. The side slope fore shaft supporting structure comprises an anchor cable, a first anchor bar pile and a grid beam arranged on a side slope, one end of the first anchor bar pile is connected to one end, in the Y direction, of the grid beam, one end of the anchor cable is connected to the other end of the grid beam, the other end of the first anchor bar pile and the other end of the anchor cable stretch into the side slope, and the first anchor bar pile and the other end of the anchor cable stretch into the side slope. And an included angle is formed between the extension directions of the first anchor bar piles and the anchor cables in the side slope. According to the utility model, the grid beams are additionally arranged, and the anchor cables and the anchor bar piles which extend into the side slope are arranged on the grid beams, so that the supporting force is integrated into an integral surface force, the side slope is subjected to comprehensive fore shaft supporting, the anti-sliding capability of the side slope is enhanced, and the stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydropower engineering technology, and in particular to a slope interlocking support structure. Background Technology

[0002] In the field of hydropower engineering, due to the unique geographical environment of the plateau, with steep mountains and deep ravines on both sides of major rivers, these natural conditions require the use of vertical excavation as the primary method for controlling slope height. However, the complex geological structure of this region, coupled with the influence of seismic activity, makes the geological conditions extremely unstable, which undoubtedly exacerbates the severity of slope stability problems.

[0003] The safety and stability of the opening area at the top of the slope is a crucial aspect of overall slope stability. In this geological environment, even a small crack or slippage can lead to large-scale slope instability, thus threatening the safety of the entire project.

[0004] Existing support methods, such as simple interlocking bolt support or interlocking cable support, can provide stability to a certain extent, but their technical limitations are becoming increasingly apparent when facing high-rock slopes in complex geological conditions on plateaus. Specifically, simple interlocking bolt support may not provide sufficient prestress to resist rock mass cracking and sliding; secondly, interlocking cable support may struggle to form an effective combined anchoring system in certain situations, leading to insufficient slope stability.

[0005] In water conservancy and hydropower projects with complex geological and hydrological conditions, current excavation and support construction technologies are insufficient to meet relevant construction requirements, especially in terms of slope stability.

[0006] Therefore, there is an urgent need for a new support method that can effectively improve slope stability while ensuring construction safety, so as to meet the needs of hydropower projects under complex geological conditions. Utility Model Content

[0007] The purpose of this utility model is to provide a slope locking support structure that overcomes the defects or problems of insufficient stability at the opening line of high vertical excavation slopes in the prior art.

[0008] The technical solution of this utility model is: a slope locking support structure, including an anchor cable, a first anchor pile and a grid beam set on the slope, one end of the first anchor pile is connected to one end of the grid beam in the Y direction, one end of the anchor cable is connected to the other end of the grid beam, the other ends of the first anchor pile and the anchor cable extend into the slope respectively, and the extension directions of the first anchor pile and the anchor cable in the slope are at an angle to each other.

[0009] In the above scheme, a grid beam is added, and anchor cables and anchor piles extending into the slope are installed on the grid beam. This integrates the support force into a whole surface force, providing comprehensive interlocking support for the slope, enhancing the slope's anti-sliding ability, and improving its stability.

[0010] Preferably, the first anchor pile and the anchor cable are arranged in at least one row along the X direction, and each row has multiple anchor piles.

[0011] Preferably, n first anchor piles are installed on the grid beam, and m anchor cables are installed on the grid beam, where n > m ≥ 1.

[0012] Preferably, a ramp is provided on the slope, and a second anchor pile extending into the slope is connected to the ramp.

[0013] Preferably, the extension directions of the second anchor pile and the first anchor pile within the slope are at an angle to each other.

[0014] Preferably, the anchor cable includes an anchor block and a steel strand, one end of the steel strand passes through the grid beam and is connected through the anchor block, and the other end of the steel strand extends into the slope.

[0015] Preferably, the grid beam includes at least three horizontal beams and a plurality of longitudinal beams connected between the at least three horizontal beams. Among the at least three horizontal beams, the anchor cable is installed at the intersection of the horizontal beam at the uppermost end of the slope and the longitudinal beam, and a plurality of first anchor piles are arranged on the horizontal beam at the lowermost end of the slope.

[0016] Preferably, the first anchor pile is also located at the intersection of the crossbeam and the longitudinal beam.

[0017] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0018] 1. The slope interlocking support structure is equipped with a grid beam, and anchor cables and anchor piles extending into the slope are installed on the grid beam to integrate the support force into a whole surface force, so as to provide comprehensive interlocking support for the slope, enhance the slope's anti-sliding ability, and improve its stability.

[0019] 2. The anchor cables of the slope locking support structure are arranged in multiple rows and extend into the rock mass, which effectively prevents the top of the slope from cracking along the joints and enhances the overall stability of the rock mass.

[0020] Third, the anchor piles and anchor cables are combined to form a joint anchoring system, which can disperse and resist the stress of the slope and improve the stability of the slope.

[0021] Fourth, setting anchor piles at the bridle lock can increase the strength of the overall support structure. Attached Figure Description

[0022] Figure 1A cross-sectional schematic diagram of the slope interlocking support structure provided by this utility model;

[0023] Figure 2 This is a plan view of the slope interlocking support structure provided by this utility model.

[0024] In the attached diagram: 1. Slope; 11. Walkway; 2. Grid beam; 21. Crossbeam; 22. Longitudinal beam; 3. Anchor cable; 31. Anchor block; 32. Steel strand; 4. First anchor pile; 5. Second anchor pile. Detailed Implementation

[0025] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0026] like Figure 1 As shown in the figure, this embodiment provides a slope interlocking support structure for slope 1, which includes a grid beam 2, anchor cables 3, a first anchor pile 4, and a second anchor pile 5. The slope 1 is excavated to form a walkway 11, and... Figure 1 The dashed line A in the diagram represents the original ground line.

[0027] like Figure 2 As shown, the slope 1 has a transverse direction (X) and a longitudinal direction (Y). The grid beam 2 includes three transverse beams 21 and multiple longitudinal beams 22 connecting the three transverse beams 21. The longitudinal beams 22 are arranged along the X direction. Anchor cables 3 are installed at the intersection of the uppermost transverse beam 21 and the longitudinal beam 22 of the slope 1. Multiple first anchor piles 4 are arranged on the lowermost transverse beam 21 of the slope 1. The first anchor piles 4 are respectively installed on the transverse beam 21 and at the intersection of the transverse beam 21 and the longitudinal beam 22. There are m anchor cables 3 arranged in the X direction to form a row. There are n first anchor piles 4 arranged in the X direction to form a row. n > m.

[0028] like Figure 1 As shown, one end of the first anchor pile 4 is connected to one end of the grid beam 2 in the Y direction, and one end of the anchor cable 3 is connected to the other end of the grid beam 2. The other ends of the first anchor pile 4 and the anchor cable 3 extend into the slope 1 respectively, and the extension directions of the first anchor pile 4 and the anchor cable 3 in the slope 1 are at an angle to each other, that is, they are not parallel to each other.

[0029] The anchor cable 3 includes an anchor block 31 and a steel strand 32. One end of the steel strand 32 passes through the grid beam 2 and is connected to the anchor block 31, while the other end of the steel strand 32 extends into the slope 1. The anchor cable 3 is an unbonded prestressed anchor cable that penetrates deep into the rock mass. The anchor cable applies pressure through prestressing technology, effectively preventing cracking along the joints at the top of the slope and enhancing the overall stability of the rock mass.

[0030] The walkway 11 is connected to a second anchor pile 5 extending into the slope 1. The extension directions of the second anchor pile 5 and the first anchor pile 4 within the slope 1 are at an angle to each other, that is, they are not parallel to each other. Example

[0031] In a project in Southwest China, the slope height is close to 400m, and the main method is vertical excavation. Anchor cable 3 is a single row of 2000KN anchor cables with a spacing of 4m and lengths of L=50m and L=40m alternating.

[0032] The first anchor pile 4 is located near the opening line of slope 1, with a diameter of φ32mm, and is installed in a row. The length of the first anchor pile 4 is L=18m, and the spacing is 2 meters.

[0033] The crossbeams 21 in the grid beam 2 are spaced 2 meters apart. The first row is H1 type with a cross-sectional dimension of 0.8m × 0.8m, and the second and third rows are H2 type with a cross-sectional dimension of 0.5m × 0.5m. The longitudinal beams 22 are spaced 4 meters apart and have a cross-sectional dimension of 0.8m × 0.8m. The grid beam 2 is connected to the anchor cable 3 and the first anchor pile 4, integrating the support force into a whole surface force.

[0034] The second anchor pile 5 has a diameter of φ32mm, a length of L=18m, and a spacing of 2 meters in the X direction.

[0035] The slope in this area is in a stable state thanks to the support structure of this invention.

[0036] This invention can significantly improve slope stability and effectively prevent cracking along joints at the top of the slope. Furthermore, through a combined anchoring system, it effectively disperses and resists slope stress, enhancing the slope's anti-sliding capacity. It is suitable for various geological conditions and slope shapes, and has broad application prospects.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A slope interlocking support structure, comprising anchor cables (3), characterized in that, It also includes a first anchor pile (4) and a grid beam (2) set on the slope (1). One end of the first anchor pile (4) is connected to one end of the grid beam (2) in the Y direction, and one end of the anchor cable (3) is connected to the other end of the grid beam (2). The other ends of the first anchor pile (4) and the anchor cable (3) extend into the slope (1) respectively, and the extension directions of the first anchor pile (4) and the anchor cable (3) in the slope (1) are at an angle to each other.

2. The slope interlocking support structure according to claim 1, characterized in that, The first anchor pile (4) and anchor cable (3) are arranged in at least one row along the X direction, and each row has multiple anchor piles.

3. The slope interlocking support structure according to claim 1, characterized in that, The first anchor pile (4) is installed in n units on the grid beam (2), and the anchor cable (3) is installed in m units on the grid beam (2), where n > m ≥ 1.

4. The slope interlocking support structure according to claim 1, characterized in that, A walkway (11) is provided on the slope (1), and a second anchor pile (5) extending into the slope (1) is connected to the walkway (11).

5. The slope interlocking support structure according to claim 4, characterized in that, The extension directions of the second anchor pile (5) and the first anchor pile (4) within the slope (1) are at an angle to each other.

6. The slope interlocking support structure according to claim 1, characterized in that, The anchor cable (3) includes an anchor block (31) and a steel strand (32). One end of the steel strand (32) passes through the grid beam (2) and is connected through the anchor block (31). The other end of the steel strand (32) extends into the slope (1).

7. The slope interlocking support structure according to claim 1, characterized in that, The grid beam (2) includes at least three crossbeams (21) and a plurality of longitudinal beams (22) connected between the at least three crossbeams (21). Among the at least three crossbeams (21), the anchor cable (3) is provided at the intersection of the crossbeam (21) at the uppermost end of the slope (1) and the longitudinal beam (22). A plurality of first anchor piles (4) are arranged on the crossbeam (21) at the lowermost end of the slope (1).

8. The slope interlocking support structure according to claim 7, characterized in that, The first anchor pile (4) is also located at the intersection of the cross beam (21) and the longitudinal beam (22).

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