Lower anti-sliding structure of cemented sand gravel dam

Abstract

The utility model provides a lower anti-sliding structure of a cemented sand-gravel dam, which comprises a slurry-rich cemented sand-gravel cushion layer laid on the surface of bedrock, the slurry-rich cemented sand-gravel cushion layer is arranged as a bearing layer of the cemented sand-gravel dam, a reinforced framework structure is arranged in the slurry-rich cemented sand-gravel cushion layer, and the reinforced framework structure is arranged in the bearing layer of the cemented sand-gravel dam. An anchoring assembly is arranged between the bed rock and the slurry-rich cemented sand gravel cushion layer, the anchoring end of the anchoring assembly penetrates into the bed rock, and the connecting end of the anchoring assembly is connected with the reinforcing framework structure to form a composite supporting system. The anti-sliding force between the cemented sand gravel dam and the bed rock can be enhanced, and compared with an existing cemented sand gravel dam in the mode that the section of the dam body is enlarged, tooth grooves are formed in the dam toe and the dam heel, the structure is simple and feasible, and construction is convenient.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower engineering technology, specifically to a substructure anti-sliding structure for cemented gravel dams. Background Technology

[0002] Cemented gravel dams have gained widespread use in recent years due to their high gravel utilization rate, low cement consumption, and significant economic advantages. However, the shear friction coefficient and bond strength of cemented gravel are lower than those of conventional concrete. Therefore, to meet the requirements for dam anti-sliding stability, cemented gravel dams have improved their anti-sliding stability by increasing the amount of cemented gravel material used, such as increasing the dam cross-section and adding grooves at the dam toe and heel. These measures significantly increase project investment and delay construction. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a substructure anti-sliding structure for cemented gravel dams. This invention enhances the anti-sliding force between the cemented gravel dam and the bedrock. Compared to existing cemented gravel dams that increase the dam cross-section and incorporate toothed grooves at the dam toe and heel, this invention offers advantages such as simple structure, feasibility, and ease of construction.

[0004] This utility model provides a lower anti-sliding structure for a cemented gravel dam, including a cemented gravel cushion layer rich in slurry laid on the bedrock surface. The cemented gravel cushion layer serves as the bearing layer of the cemented gravel dam. A reinforcing skeleton structure is provided within the cemented gravel cushion layer. An anchoring component is provided between the bedrock and the cemented gravel cushion layer. The anchoring end of the anchoring component extends into the bedrock, and the connecting end of the anchoring component is connected to the reinforcing skeleton structure to form a composite support system.

[0005] In one embodiment, a normal concrete leveling layer is provided between the bedrock and the cemented gravel cushion layer.

[0006] In one embodiment, the anchoring assembly includes multiple L-shaped mortar anchors, the vertical sections of which serve as anchoring ends and penetrate into the bedrock, and the horizontal sections of which serve as connecting ends and connect to the reinforcing skeleton structure.

[0007] In one embodiment, multiple mortar anchors are arranged in a rectangular array.

[0008] In one embodiment, the reinforcing skeleton structure is arranged in the lower part of the cemented gravel cushion layer.

[0009] In one embodiment, the diameter of the mortar anchor is 25mm to 32mm.

[0010] In one embodiment, the thickness of the cemented gravel cushion layer is greater than or equal to 2m.

[0011] In one embodiment, the reinforcing skeleton structure is configured as a mesh structure composed of multiple interconnected steel bars, and the spacing between the steel bars in the reinforcing skeleton structure is smaller than the spacing between the rectangular array of the mortar anchors.

[0012] The beneficial effects of the substructure anti-sliding structure of the cemented gravel dam provided in this embodiment of the invention are as follows:

[0013] This structure embeds mortar anchors deep into the bedrock bearing layer, significantly improving the bond strength between the mortar anchors and the bedrock by expanding the anchoring contact surface. A steel mesh is rigidly welded to the ends of the mortar anchors to form a composite support structure, effectively enhancing the bond strength of the mortar anchors in the cemented gravel rich in mortar. Ultimately, the anchoring components enhance the shear strength of the dam-bedrock contact surface, thereby improving the anti-sliding stability of the cemented gravel dam. This invention can enhance the anti-sliding force between the cemented gravel dam and the bedrock. Compared to existing cemented gravel dams that increase the dam cross-section and install toothed grooves at the dam toe and heel, it has the advantages of simple structure, feasibility, and convenient construction. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a typical cross-sectional schematic diagram of the lower anti-sliding structure of a cemented gravel dam provided in an embodiment of the present invention.

[0016] Reference numerals in the attached drawings: 1-Mortar anchor; 2-Mortar-rich cemented gravel cushion layer; 3-Normal concrete leveling layer; 4-Reinforced skeleton structure; 5-Bedrock; 6-Reinforcing steel. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting the present utility model. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting the present utility model.

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0019] like Figure 1 As shown, a substructure for anti-sliding of a cemented gravel dam includes a cemented gravel cushion layer 2 with rich slurry and cemented gravel 5 laid on the surface of bedrock 5. The cemented gravel cushion layer 2 serves as the bearing layer of the cemented gravel dam. A reinforcing skeleton structure 4 is provided within the cemented gravel cushion layer 2. An anchoring component is provided between the bedrock 5 and the cemented gravel cushion layer 2. The anchoring end of the anchoring component extends into the bedrock 5, and the connecting end of the anchoring component is connected to the reinforcing skeleton structure 4 to form a composite support system.

[0020] A normal concrete leveling layer 3 is provided between the bedrock 5 and the cemented gravel cushion layer 2. In this embodiment, the normal concrete leveling layer 3 has a thickness of 10cm and a concrete strength grade of C20.

[0021] The anchoring assembly includes multiple L-shaped mortar anchor rods 1, with the vertical section of the mortar anchor rod 1 serving as the anchoring end and penetrating into the bedrock, and the horizontal section of the mortar anchor rod 1 serving as the connecting end and connecting to the reinforcing skeleton structure 4.

[0022] Multiple mortar anchor rods 1 are arranged in a rectangular array with a spacing of 3m×3m between rows.

[0023] The reinforcing skeleton structure 4 is located in the lower part of the cemented gravel cushion layer 2.

[0024] In this embodiment, the diameter of the mortar anchor 1 is 25mm to 32mm, and the length of the mortar anchor 1 is 4.5m or 6m. The horizontal section length of the mortar anchor 1 is 24 times the diameter of the mortar anchor 1.

[0025] The cemented gravel cushion layer 2 has a thickness greater than or equal to 2m, a strength grade of C20, and a seepage resistance grade of W6, and must meet the requirements for dam strength and seepage resistance. In this embodiment, the cementitious material used in the cemented gravel cushion layer 2 is relatively large, and it has good adhesion to the bedrock 5, reinforcing steel, etc.

[0026] The reinforcing skeleton structure 4 is configured as a mesh structure composed of multiple interconnected steel bars 6. The horizontal section of the mortar anchor rod 1 is connected to the steel bars 6 by welding. The spacing of the steel bars 6 in the reinforcing skeleton structure 4 is smaller than the spacing of the rectangular array of the mortar anchor rods 1.

[0027] In this embodiment, the diameter of the reinforcing bar 6 is 20mm to 28mm, and the spacing between rows of the reinforcing bar mesh is 20cm × 20cm.

[0028] Before constructing the cemented gravel dam, a layer of normal concrete leveling layer 3 is pre-laid at the lower part of the dam, and a composite support system is set up between the cemented gravel cushion layer 2 and the bedrock 5. The main purpose of laying the normal concrete leveling layer 3 is to level the dam foundation to meet the needs of cemented gravel compaction operations, and at the same time, to ensure good bonding with the cemented gravel cushion layer 2.

[0029] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the lower anti-sliding structure of the cemented gravel dam of this utility model, and can produce the positive effects described in this utility model.

[0030] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0031] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A lower anti-sliding structure of a cemented sand-gravel dam, characterized by: The system includes a cemented gravel cushion layer laid on the bedrock surface, which serves as the bearing layer of the cemented gravel dam. A reinforcing skeleton structure is installed within the cemented gravel cushion layer. An anchoring components are installed between the bedrock and the cemented gravel cushion layer, with the anchoring ends of the anchoring components penetrating into the bedrock and the connecting ends of the anchoring components connected to the reinforcing skeleton structure to form a composite support system.

2. The lower anti-sliding structure of the cemented sand gravel dam according to claim 1, characterized in that: A normal concrete leveling layer is provided between the bedrock and the cemented gravel cushion layer.

3. The lower anti-sliding structure of the cemented sand-gravel dam according to claim 1, characterized in that: The anchoring assembly includes multiple L-shaped mortar anchors, with the vertical section of the mortar anchor serving as the anchoring end and penetrating into the bedrock, and the horizontal section of the mortar anchor serving as the connecting end and connecting to the reinforcing skeleton structure.

4. The lower anti-sliding structure of the cemented sand gravel dam according to claim 3, characterized in that: Multiple mortar anchors are arranged in a rectangular array.

5. The lower anti-sliding structure of the cemented sand-gravel dam according to claim 1, characterized in that: The reinforced skeleton structure is located in the lower part of the cemented gravel cushion layer.

6. The lower anti-sliding structure of the cemented gravel dam according to claim 3, characterized in that: The diameter of the mortar anchor rod is 25mm to 32mm.

7. The lower anti-sliding structure of the cemented sand-gravel dam according to claim 1, characterized in that: The thickness of the cemented gravel cushion layer is greater than or equal to 2m.

8. The lower anti-sliding structure of the cemented sand-gravel dam according to claim 4, characterized in that: The reinforcing skeleton structure is configured as a mesh structure composed of multiple interconnected steel bars, and the spacing between the steel bars in the reinforcing skeleton structure is smaller than the spacing between the rectangular array of the mortar anchors.

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