High earth-rock dam composite anti-seismic structure and construction method thereof

A technology for high earth-rockfill dams and earthquake-resistant structures, which is applied in basic structural engineering, excavation, dams, etc., can solve problems such as complex construction and poor durability, achieve good adaptability, improve seismic performance, and reduce lateral deformation and unevenness. subsidence effect

Inactive Publication Date: 2021-04-20
LUDONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects of complex construction and poor durability in the prior art, and provide a composite seismic reinforcement measure and construction method for a high earth-rock dam that is simple in structure, convenient in construction, and can effectively improve the seismic performance of rockfill materials in the crest area. This method belongs to flexible three-dimensional reinforcement, which can better adapt to the deformation of the dam body, reduce the loosening and slipping of rockfill in the crest area under earthquake action, and inhibit the formation of shallow landslides, so as to achieve the purpose of improving the seismic performance of high earth-rock dams

Method used

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  • High earth-rock dam composite anti-seismic structure and construction method thereof
  • High earth-rock dam composite anti-seismic structure and construction method thereof

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Embodiment 1

[0039] In this embodiment, a high earth-rock dam composite seismic structure and its construction method, refer to the attached Figure 1-2 , 4-5, the slope ratio of the upstream and downstream dams is 1:2.0, and when the filling reaches 1 / 4 of the dam height in the crest area, lay the first layer of steel mesh 3 horizontally in the upper and lower rockfills on both sides of the core wall 1, Rockfill 2 is filled from bottom to top on the reinforced mesh 3 to form a rockfill structure. The rockfill structure is arranged around the core wall 1 and has a trapezoidal longitudinal section. The reinforced mesh 3 is laid horizontally between the rockfill 2 every 5 meters. That is, the vertical spacing of the reinforcement mesh is 5m, the entire surface of the reinforcement mesh 3 is covered with neutral glass glue 7, and a plurality of high polymer rockfill composite piles 4 are arranged in the area from the central axis of the rockfill structure to the outer circumference of the rock...

Embodiment 2

[0050] For the composite seismic structure of the high earth-rock dam in this embodiment, please refer to the attached Figure 3-5 As shown, the slope ratio of the upstream and downstream dams is 1:2.0. The difference between this embodiment and Embodiment 1 is that no core wall 1 is provided, and a panel 6 is provided on the facing surface of the high earth-rockfill dam.

[0051] When filling to 1 / 4 of the dam height in the dam crest area, lay the first layer of reinforcement mesh 3 horizontally in the upstream and downstream rockfills, and then lay a layer of reinforcement mesh 3 every 6m of filling;

[0052] One end of the steel mesh 3 is laid to the panel 6 and welded with the steel bars of the panel 6 as a whole, and the length of the other end laid along the river direction is not less than 27m. Upstream and downstream stone stacking;

[0053] Spray neutral glass glue 7 on the surface of steel mesh 3;

[0054] After the filling of the earth-rock dam is completed, verti...

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Abstract

The invention relates to a high earth-rock dam composite anti-seismic structure and a construction method thereof, and belongs to the technical field of water conservancy projects. The high earth-rock dam composite anti-seismic structure comprises a rockfill structure composed of rockfill which is filled from bottom to top, wherein the longitudinal section of the rockfill structure is trapezoidal; a reinforcing mesh is horizontally laid between every 4-6 meters of rockfill; the surface of each whole reinforcing mesh is covered with a neutral glass cement layer; a plurality of high polymer rockfill composite piles are arranged in the area from the central axis of the rockfill structure to the outer circumference of the rockfill structure; the high polymer rockfill composite piles and the rockfill are bonded into a whole; an expansion pile is arranged at the position, close to the corresponding reinforcing mesh, of each high polymer rockfill composite pile; the outer diameter of each expansion pile is larger than that of the corresponding high polymer rockfill composite pile; and the expansion piles, the high polymer rockfill composite piles and the reinforcing meshes are bonded into a whole. According to the high earth-rock dam composite anti-seismic structure and the construction method thereof, flexible three-dimensional reinforcement is adopted, the high earth-rock dam composite anti-seismic structure can well adapt to dam body deformation, loosening and sliding of the rockfill in the dam top area under the earthquake action are reduced, formation of shallow landslide is inhibited, and therefore the anti-seismic performance of a high earth-rock dam is improved.

Description

technical field [0001] The invention relates to a composite anti-seismic structure of a high earth-rock dam and a construction method thereof, belonging to the technical field of water conservancy engineering. Background technique [0002] The western region of my country is rich in hydropower resources, but their development and utilization are insufficient. According to the distribution characteristics of hydropower resources and the current development status, my country fully recommends the construction of large-scale hydropower energy bases in the western region. Earth-rock dams have the advantages of local materials, convenient construction, low requirements for geological and topographical conditions, and good adaptability. A series of high earth-rockfill dams have been built, are under construction, or are planned to be built in the western region of my country, such as the Shuangjiangkou high-core rockfill dam (314m high) located in the upper reaches of the Dadu Riv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/06E02B8/00E02D17/20
Inventor 刘平王依林李钟毛海英孟雷刘岩
Owner LUDONG UNIVERSITY
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