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

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...

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

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