Slope unloading stabilizing structure

Abstract

The utility model relates to a slope unloading stabilizing structure. Comprising a net-shaped frame type stable platform constructed on a slope surface, the net-shaped frame type stable platform is formed by splicing cross-shaped stable platforms, the cross-shaped stable platforms are formed in a cross-shaped cast-in-place groove formed in the slope surface of the slope in a cast-in-place mode through concrete, and connecting ribs are arranged between the adjacent ends of the adjacent cross-shaped stable platforms. One end of each connecting rib is formed at the end of one cross-shaped stable platform in a pouring mode, and the other end of each connecting rib is formed at the end of the other cross-shaped stable platform in a pouring mode. A grouting type pre-stressed anchor cable is installed in the portion, located on the inner side of each cross-shaped stable platform, of the slope surface of the side slope in a driving mode, a center buttress is formed in the center of each cross-shaped stable platform in a pouring mode, and anchor bearing plates of the grouting type pre-stressed anchor cables are integrally formed in the center buttresses in a pouring mode. The utility model provides a slope unloading stabilizing structure. The overall stability of a slope after unloading is improved.

Description

Technical Field

[0001] This utility model belongs to the field of slope reinforcement technology, and in particular relates to a slope unloading and stabilizing structure. Background Technology

[0002] In slope engineering, unloading is a significant factor leading to slope instability. Unloading is typically caused by slope excavation, changes in groundwater levels, or natural factors. It alters the stress state of the slope's soil and rock mass, resulting in deformation and failure. Unloading causes stress redistribution within the rock mass near the unloading surface, potentially leading to localized stress concentration. It also causes surface rock mass rebound, which can create a constrained residual stress system within the rock mass due to differential rebound. The deformation and fracturing of the rock mass during unloading are precisely due to these two changes in the rock mass's stress state. For slopes, unloading often leads to instability and problems such as slope slippage.

[0003] It is necessary to develop and design construction structures to improve the overall stability of the slope after unloading, thereby enhancing slope stability. Utility Model Content

[0004] The purpose of this invention is to provide a slope unloading and stabilizing structure to improve the overall stability of the slope after unloading.

[0005] The technical solution adopted by this utility model is as follows: a slope unloading and stabilizing structure, including a mesh frame type stabilizing platform constructed on the slope surface, the mesh frame type stabilizing platform being spliced ​​together from cross-shaped stabilizing platforms, the cross-shaped stabilizing platforms being cast in place with concrete in cross-shaped cast-in-place trenches opened on the slope surface, connecting bars being provided between the adjacent ends of adjacent cross-shaped stabilizing platforms, one end of the connecting bar being cast into the end of one cross-shaped stabilizing platform and the other end being cast into the end of another cross-shaped stabilizing platform; grouting prestressed anchor cables are installed in the slope surface located inside each cross-shaped stabilizing platform, and a central support is cast into the center of the cross-shaped stabilizing platform, with the anchor plate of the grouting prestressed anchor cable integrally cast into the central support.

[0006] Preferably, a top intercepting ditch is cast in place at the top of the slope surface. The top intercepting ditch includes a horizontal section and a retaining wall in the middle of the horizontal section. At one end of the horizontal section, there is a first inclined section extending downward along the slope surface, and at the other end, there is a second inclined section extending obliquely upward.

[0007] Preferably, a cast-in-place top assembly is provided on the slope surface between the end of the uppermost cross-shaped stabilizing platform and the first inclined section of the top intercepting ditch; and a cast-in-place bottom extension is provided on the slope surface between the end of the lowermost cross-shaped stabilizing platform and the bottom of the slope.

[0008] Preferably, a drain pipe is provided at the bottom center of each grid of the mesh frame type stabilizing platform, and a non-woven fabric sleeve is wrapped around the inner end of the drain pipe.

[0009] Preferably, a vegetation layer is formed within each grid of the mesh-frame type stable platform.

[0010] The advantages and positive effects of this utility model are:

[0011] This invention provides a slope unloading and stabilizing structure. Compared with existing slope unloading and stabilizing structures, the present invention constructs a mesh-frame stabilizing platform on the slope surface, consisting of multiple cross-shaped stabilizing platforms joined together. Connecting ribs are installed between adjacent cross-shaped stabilizing platforms to connect them into a whole. By installing grouting prestressed anchors on the slope surface inside the center of each cross-shaped stabilizing platform and connecting the outer ends of each anchor to the central support at the center of the cross-shaped stabilizing platform, a tight connection is achieved between the mesh-frame stabilizing platform and the slope soil through prestressing. This forms a stable structure with overall load-bearing capacity, improving the overall stability of the slope after unloading. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure at position AA in the middle;

[0014] Figure 3 yes Figure 1 A cross-sectional view of the BB position;

[0015] Figure 4 yes Figure 3 A magnified structural diagram of position C in the middle.

[0016] In the picture:

[0017] 1. Vegetation layer; 2. Top intercepting ditch; 3. Connecting reinforcement; 4. Drainage pipe; 5. Grouting type prestressed anchor cable; 6. Central support pier; 7. Cross-shaped stabilizing platform; 8. Top joint; 9. Bottom extension; 10. Slope surface; 11. Non-woven fabric cover. Detailed Implementation

[0018] To further understand the invention content, features and effects of this utility model, the following embodiments are provided in detail.

[0019] Please see Figure 1 , Figure 2 and Figure 3The slope unloading and stabilizing structure of this utility model includes a mesh frame type stabilizing platform constructed on the slope surface 10, which is composed of cross-shaped stabilizing platforms 7 spliced ​​together.

[0020] The cross-shaped stabilizing platform 7 is cast-in-place with concrete within a cross-shaped cast-in-place trench on the slope surface 10. Connecting ribs 3 are provided between the adjacent ends of adjacent cross-shaped stabilizing platforms 7. One end of the connecting rib 3 is cast into the end of one cross-shaped stabilizing platform 7, and the other end is cast into the end of another cross-shaped stabilizing platform 7. During the sequential casting construction of the cross-shaped stabilizing platforms 7, connecting ribs 3 are set at the end of the previous cross-shaped stabilizing platform 7, with exposed ends. When the subsequent cross-shaped stabilizing platform 7 is cast in place, the exposed connecting ribs 3 are integrally cast inside. Therefore, the connecting ribs 3 between adjacent cross-shaped stabilizing platforms 7 enhance the overall integrity of the mesh frame stabilizing platform.

[0021] Grouting-type prestressed anchor cables 5 are installed within the slope surface 10 on the inner side of each cross-shaped stabilizing platform 7. A central support pier 6 is cast at the center of the cross-shaped stabilizing platform 7, and the anchor plate of the grouting-type prestressed anchor cable 5 is integrally cast within the central support pier 6. The central support pier 6 simultaneously enhances the overall structural strength of the cross-shaped stabilizing platform 7. When the grouting-type prestressed anchor cables 5 are tightened, the generated prestress is located between the center of the cross-shaped stabilizing platform 7 and the slope soil. The multi-point arrangement of the grouting-type prestressed anchor cables 5 achieves the technical effect of tightly connecting the mesh-frame stabilizing platform and the slope soil by applying prestress, forming a stable structure with overall stress.

[0022] In this embodiment, a top intercepting ditch 2 is cast-in-place at the top of the slope surface 10. The top intercepting ditch 2 is used to intercept incoming water (such as rainwater) from the top of the slope, preventing the water from flowing down the slope and eroding the slope surface 10. Figure 2 and Figure 3 As shown, the top intercepting ditch 2 includes a horizontal section with a retaining wall in the middle. At one end of the horizontal section, there is a first inclined section extending downward along the slope surface 10, and at the other end, there is a second inclined section extending upward. Water from the top of the slope enters the guiding channel of the top intercepting ditch 2 and is transported and transferred along the length of the guiding channel.

[0023] In this embodiment, a cast-in-place top connector 8 is provided on the slope surface 10, between the end of the uppermost cross-shaped stabilizing platform 7 and the first inclined section of the top intercepting ditch 2. In this embodiment, a cast-in-place bottom extension 9 is provided on the slope surface 10, between the end of the lowermost cross-shaped stabilizing platform 7 and the bottom of the slope. The top connector 8 integrates the top of the mesh frame stabilizing platform with the top intercepting ditch 2, and the top connector 8, the mesh frame stabilizing platform, and the bottom extension 9 together cover the entire slope surface 10.

[0024] In this embodiment, a drainage pipe 4 is provided at the bottom center of each grid of the mesh frame type stabilization platform, and a non-woven fabric sleeve 11 is wrapped around the inner end of the drainage pipe 4. The function of the drainage pipe 4 is to drain water from the rock and soil within the slope surface 10, thereby further ensuring the stability of the rock and soil within the slope surface 10. The function of setting the non-woven fabric sleeve 11 is to prevent the drainage pipe 4 from being blocked by mud and sand. Water in the rock and soil seeps through the non-woven fabric sleeve 11 and enters the drainage pipe 4, and then is discharged outward.

[0025] In this embodiment, vegetation layer 1 is planted within each grid of the mesh-frame type stable platform to form a vegetation layer 1. The functions of forming vegetation layer 1 are twofold: first, to retain soil and reduce the hydraulic erosion effect of rainwater on the slope surface 10; and second, to serve a decorative purpose, enhancing the aesthetic appeal of the greening of the slope.

[0026] Construction method:

[0027] The slope surface 10 is leveled; according to the construction process design, cross-shaped cast-in-place trenches are excavated one by one on the slope surface 10. After the cross-shaped cast-in-place trenches are excavated and formed, grouting prestressed anchor cables 5 are installed at the center. Then, the cast-in-place construction of the cross-shaped stabilizing platform 7 is carried out and connecting bars 3 are installed at the ends. The central support 6 is integrally cast in the center of the cross-shaped stabilizing platform 7 and the anchor plate of the grouting prestressed anchor cable 5 is integrally cast in the central support 6. Then, the cross-shaped cast-in-place trenches at adjacent positions are excavated and the cast-in-place construction of the cross-shaped stabilizing platform 7 at that position is carried out. The connecting bars 3 at the end of the previous cross-shaped stabilizing platform 7 are integrally cast inside the end of this cross-shaped stabilizing platform 7. This process is continued to form a mesh frame type stabilizing platform on the slope surface 10.

[0028] The top of the slope is supported by formwork and the top intercepting ditch 2 is cast in place. The top cross-shaped stabilizing platform 7 and the top intercepting ditch 2 are excavated and the top combined body 8 is cast in place. The bottom cross-shaped stabilizing platform 7 and the bottom of the slope are excavated and the bottom extension body 9 is cast in place.

[0029] After the mesh frame type stabilization platform hardens, a special tensioning device is used to tighten the grouting type prestressed anchor cables 5 at each position and grouting is performed using a grouting device; then, a vegetation layer 1 is planted within the grid of the mesh frame type stabilization platform; then, a drilling device is used to drill holes in the middle of the bottom of the grid of the mesh frame type stabilization platform, and a non-woven fabric cover 11 is wrapped around the drainage pipe 4, and then the drainage pipe 4 is inserted into the drilled hole, with the drainage pipe 4 having a certain exposed length.

Claims

1. A slope unloading and stabilizing structure, characterized in that: The system includes a mesh frame type stabilizing platform constructed on the slope surface (10). The mesh frame type stabilizing platform is composed of cross-shaped stabilizing platforms (7). The cross-shaped stabilizing platforms (7) are formed by cast-in-place concrete in the cross-shaped cast-in-place trench opened on the slope surface (10). Connecting bars (3) are provided between the adjacent ends of adjacent cross-shaped stabilizing platforms (7). One end of the connecting bar (3) is cast into the end of one cross-shaped stabilizing platform (7), and the other end is cast into the end of another cross-shaped stabilizing platform (7). Grouting type prestressed anchor cables (5) are installed in the slope surface (10) located inside each cross-shaped stabilizing platform (7). A central support (6) is cast into the center of the cross-shaped stabilizing platform (7), and the anchor plate of the grouting type prestressed anchor cable (5) is integrally cast into the central support (6).

2. The slope unloading and stabilizing structure as described in claim 1, characterized in that: in The top of the slope surface (10) is cast in place with a top intercepting ditch (2). The top intercepting ditch (2) includes a horizontal section and a water retaining wall in the middle of the horizontal section. At one end of the horizontal section, there is a first inclined section extending downward along the slope surface (10), and at the other end, there is a second inclined section extending obliquely upward.

3. The slope unloading and stabilizing structure as described in claim 2, characterized in that: in A cast-in-place top assembly (8) is provided between the end of the uppermost cross-shaped stabilizing platform (7) on the slope surface (10) and the first inclined section of the top intercepting ditch (2); a cast-in-place bottom extension (9) is provided between the end of the lowermost cross-shaped stabilizing platform (7) on the slope surface (10) and the bottom of the slope.

4. The slope unloading and stabilizing structure as described in claim 3, characterized in that: Drainage pipes (4) are provided at the bottom center of each grid of the mesh frame type stabilizing platform, and non-woven fabric sleeves (11) are wrapped around the inner end of the drainage pipes (4).

5. The slope unloading and stabilizing structure as described in claim 4, characterized in that: A vegetation layer is formed by planting vegetation within each grid of the mesh-frame type stable platform (1).

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