Slope supporting structure for water conservancy project

Abstract

The utility model relates to the technical field of slope supporting, in particular to a slope supporting structure for a water conservancy project. The structure comprises a rock slope. According to the slope supporting structure for the water conservancy project, through the arrangement of the gabion gabion slope protection pieces and the spray anchor supporting pieces, slope collapse deposits and a silt layer are scattered on the slope surface, the structure is loose, and collapse is likely to occur when the slope is overhead, a steel reinforcement framework is selected, the gabion gabion net faces are covered outside, and pebble materials are filled in the gabion gabion slope protection pieces and the spray anchor supporting pieces; the adjacent gabion frameworks are bound through alloy steel wires, the gabion frameworks and the lead wire net faces are bound through alloy steel wires, slope protection is carried out through gabion slope protection pieces after slope collapse deposits and silt layers are removed, under the working conditions of rainfall, strong wind, earthquakes and the like, rockfall is likely to occur, shotcrete-bolting supporting is carried out on an exposed bedrock slope through shotcrete-bolting supporting pieces, and the gabion frameworks and the gabion net faces are bound through the gabion slope protection pieces. The effect of supporting and reinforcing the rock slope is achieved, water and soil loss caused by landslide, collapse and slope purgation is avoided, the overall structure is simple, the supporting effect is good, manufacturing is easy, and the cost is low.

Description

Technical Field

[0001] This utility model relates to the field of slope protection technology, specifically to a slope protection structure for water conservancy projects. Background Technology

[0002] In water conservancy projects, some dam conglomerate rocks are relatively young in age, with low cementation and generally weak resistance to weathering. The surface of some conglomerate rocks can be excavated mechanically and manually, and borehole collapse occurs during water supply drilling. Under good core sampling conditions, the rock density (RQD) is small, and core samples are rarely columnar, mostly fragmented. Under dry conditions, the slope soil is generally stable, but due to the low cohesion of silt and the internal friction angle being similar to the slope gradient, landslides are prone to occur when geological conditions change, such as earthquakes or water saturation. After the reservoir is filled, the soil in the area of ​​the reservoir in front of the dam will be in a saturated state, and its engineering properties will deteriorate significantly. The internal friction will decrease significantly. In addition, the scouring and erosion of the soil near the reservoir water level may promote the further downward sliding of aeolian silt. Although the sliding is a shallow soil landslide, it is prone to rockfall under the conditions of precipitation, strong wind, and earthquake, which may endanger the safety of the dam's flood discharge (diversion) tunnel, the inlet of the surface flood discharge tunnel, the gate house, the protective facilities, as well as the safety of the dam abutment, upstream and downstream slopes, and operation and management personnel.

[0003] However, traditional slope protection structures either have high overall construction costs or unsatisfactory support effects.

[0004] Therefore, a slope support structure for water conservancy projects is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a slope support structure for water conservancy projects, so as to solve the problems of either high overall construction cost or unsatisfactory support effect.

[0006] To achieve the above objectives, a slope protection structure for water conservancy projects is provided, including a rock slope, wherein one side of the top surface of the rock slope is paved with permeable bricks; a gabion slope protection component is provided on one side of the permeable bricks, and a shotcrete support component is provided at the tail of the gabion slope protection component.

[0007] As a further improvement to this technical solution, the gabion slope protection component includes a steel reinforcement frame, a gabion mesh surface, and gravel. The steel reinforcement frame is set on one side of the permeable brick, the surface of the steel reinforcement frame is covered with the gabion mesh surface, and the gravel is filled inside the gabion mesh surface.

[0008] As a further improvement to this technical solution, the diameter of the steel reinforcement skeleton is 10cm, the material of the gabion mesh is No. 10 lead wire, and the diameter of the pebbles is 30cm.

[0009] As a further improvement to this technical solution, the size of the gabion slope protection component is 1.0*1.0*0.5m, and the mesh size of the gabion mesh is a hexagon with a diameter of 8*10cm.

[0010] As a further improvement to this technical solution, the shotcrete support includes a steel mesh set on the surface of the rock slope, and the surface of the steel mesh is provided with a number of self-propelled hollow grouting anchor rods.

[0011] As a further improvement to this technical solution, the size of the steel mesh is 200*200mm, and the length of the hollow grouting anchor is 4.0m, with a spacing of 3.0m.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In this water conservancy project, the slope protection structure utilizes gabion slope protection components and shotcrete support components. The slope surface is covered with colluvial deposits and silt layers, making the structure loose and prone to collapse. A steel frame is used, covered with gabion mesh, and filled with pebbles. Adjacent gabion frames are bound together with alloy steel wire. After removing the colluvial deposits and silt layers, the gabion slope protection components are used for slope protection. Under conditions such as rainfall, strong winds, and earthquakes, rockfalls are likely to occur. For exposed bedrock slopes, shotcrete support components are used for reinforcement, achieving the effect of supporting and strengthening the rock slope, preventing landslides, collapses, and slope runoff, thus avoiding soil erosion. The overall structure is simple, provides good support, is easy to manufacture, and has a low cost. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a structural schematic diagram of the sprayed anchor support component of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the gabion slope protection component of this utility model.

[0017] The meanings of the labels in the diagram are as follows:

[0018] 1. Rock slope; 2. Permeable bricks; 3. Gabion slope protection components; 301. Reinforcing steel frame; 302. Gabion mesh; 303. Gravel material; 4. Shotcrete and anchor support components; 401. Reinforcing steel mesh; 402. Hollow grouting anchor rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Please see Figures 1-3 As shown, the purpose of this embodiment is to provide a slope support structure for water conservancy projects, including a rock slope 1, with permeable bricks 2 laid on one side of the top surface of the rock slope 1; a gabion slope protection component 3 is provided on one side of the permeable bricks 2, and a sprayed anchor support component 4 is provided at the tail of the gabion slope protection component 3.

[0022] By setting up gabion slope protection components 3 and shotcrete support components 4, the slope surface is scattered with colluvial deposits and silt layers. The structure is loose and easily collapses due to its openness. A steel frame 301 is selected, with an outer gabion mesh 302 and an inner fill of gravel 303. Adjacent gabion frames are tied together with alloy steel wire. After the colluvial deposits and silt layers are removed, the slope is protected by gabion slope protection components 3. Under conditions such as precipitation, strong winds, and earthquakes, rockfalls are likely to occur. For exposed bedrock slopes, shotcrete support components 4 are used for shotcrete support, which achieves the effect of supporting and reinforcing the rock slope 1, avoiding landslides, collapses, and slope runoff, which can cause soil erosion. The overall structure is simple, the support effect is good, it is easy to manufacture, and the cost is low.

[0023] Please see Figure 3 The gabion slope protection component 3 includes a steel frame 301, a gabion mesh surface 302, and gravel material 303. The steel frame 301 is set on one side of the permeable brick 2, the surface of the steel frame 301 is covered with the gabion mesh surface 302, and the gravel material 303 is filled inside the gabion mesh surface 302.

[0024] Please see Figure 3The diameter of the steel reinforcement frame 301 is 10cm, the gabion mesh 302 is made of No. 10 lead wire, and the diameter of the pebble material 303 is 30cm.

[0025] Please see Figure 3 The dimensions of gabion slope protection component 3 are 1.0*1.0*0.5m, and the mesh size of gabion mesh 302 is 8*10cm hexagonal.

[0026] By setting up gabion slope protection components 3, steel reinforcement frames 301, outer gabion mesh 302, and inner gravel 303 are selected. Adjacent gabion frames are tied together with alloy steel wire, and gabion frames are tied together with wire mesh. After the landslide debris and silt layer are removed, the slope is protected by gabion slope protection components 3.

[0027] Please see Figure 2 The shotcrete support component 4 includes a steel mesh 401 set on the surface of the rock slope 1, and a number of self-propelled hollow grouting anchor rods 402 are set on the surface of the steel mesh 401.

[0028] Please see Figure 2 The steel mesh 401 has a size of 200*200mm, and the hollow grouting anchor rod 402 has a length of 4.0m and a spacing of 3.0m.

[0029] By installing the shotcrete anchor support component 4, the exposed bedrock slope is supported by shotcrete anchor support component 4, which achieves the effect of supporting and reinforcing the rock slope 1, avoiding landslides, collapses and slope runoff, and preventing soil erosion.

[0030] Work steps: Under conditions such as precipitation, strong wind, and earthquake, rockfalls are likely to occur. The exposed bedrock slope is supported by sprayed anchor support component 4, which achieves the effect of supporting and reinforcing the rock slope 1, avoiding landslides, collapses and slope runoff, and preventing soil erosion.

[0031] The reinforcing mesh 401 adopts the Φ8@200mm×200mm type and should be firmly connected to the hollow grouting anchor 402. The self-drilling hollow grouting anchor 402 (the hollow grouting anchor 402 adopts Φ25, HRB400 grade steel) is 4.0m long, penetrates 3.9m into the rock, and exposes 0.1m, so as not to expose the protective surface. The spacing between rows is 3m. The design value of the pull-out force of the hollow grouting anchor 402 is 70kN, with a 10° downward angle, which will be determined according to the actual rock strata conditions on site to achieve a good anchoring effect. C25 concrete spraying is used, with a thickness of 100mm and grade I mix; mortar grade M25.

[0032] The slope surface is covered with colluvial deposits and silt layers. The structure is loose and open, making it prone to collapse. A steel reinforcement frame 301, an outer gabion mesh 302, and an inner fill of gravel 303 are selected. Adjacent gabion frames are tied together with alloy steel wire and with the wire mesh. The single strength of the steel reinforcement frame 301 is greater than 450MPa, the elongation is greater than 10%, and the zinc content is greater than 250g / m². The strength of the outer gabion mesh 302 is greater than 35KN. After the colluvial deposits and silt layers are removed, the slope is protected by gabion slope protection components 3.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A slope protection structure for hydraulic engineering, characterized in that: The rock slope (1) includes a rock slope (1) with permeable bricks (2) laid on one side of the top surface of the rock slope (1). A gabion slope protection component (3) is provided on one side of the permeable brick (2), and a spray anchor support component (4) is provided at the tail of the gabion slope protection component (3).

2. The slope protection structure for water conservancy projects according to claim 1, characterized in that: The gabion slope protection component (3) includes a steel frame (301), a gabion mesh (302), and gravel (303). The steel frame (301) is set on one side of the permeable brick (2), and the surface of the steel frame (301) is covered with the gabion mesh (302). The gravel (303) is filled inside the gabion mesh (302).

3. The slope protection structure for water conservancy projects according to claim 2, characterized in that: The diameter of the steel reinforcement frame (301) is 10cm, the material of the gabion mesh (302) is No. 10 lead wire, and the diameter of the pebble material (303) is 30cm.

4. The slope protection structure for water conservancy projects according to claim 2, characterized in that: The size of the gabion slope protection component (3) is 1.0*1.0*0.5m, and the mesh size of the gabion mesh (302) is a hexagon with a mesh size of 8*10cm.

5. The slope protection structure for water conservancy projects according to claim 1, characterized in that: The shotcrete support component (4) includes a steel mesh (401) set on the surface of the rock slope (1), and the surface of the steel mesh (401) is provided with a number of self-propelled hollow grouting anchor rods (402).

6. The slope protection structure for water conservancy projects according to claim 5, characterized in that: The steel mesh (401) has a size of 200*200mm, and the hollow grouting anchor (402) has a length of 4.0m and a spacing of 3.0m.

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