A gravity face rockfill dam and its construction method

Abstract

The invention relates to a gravity concrete faced rockfill dam and a construction method thereof, and belongs to the technical field of water conservancy projects. The gravity concrete faced rockfill dam comprises a concrete panel, a cushion layer, L-shaped thick plates, a rockfill concrete area and other components. The concrete panel is laid on the upstream face of the upstream side of a dam body, and the cushion layer is arranged on the downstream side of the concrete panel. The downstream side of the cushion layer is the rockfill concrete area, the L-shaped thick plates are arranged at a certain interval along the dam height and can be horizontally arranged, the plate ends face the downstream position and go deep into the rockfill concrete area, the other ends of the L-shaped thick plates are big head ends and face the upstream position, and the concrete panel is supported. The downstream side of the rockfill concrete area is a main rockfill area and a secondary rockfill area, and the function of restraining deformation of the rockfill concrete area is achieved. A drainage gallery is located in the rockfill concrete area, upstream seepage water of the dam body and a dam foundation is discharged, the uplift pressure of the dam foundation is reduced, and stability of the dam body is improved. According to the gravity concrete faced rockfill dam and the construction method thereof, the beneficial effects of a gravity dam and the concrete faced rockfill dam are fully utilized, the deformation of the panel is reduced, the probability of panel damage is reduced, and safety of the high concrete faced rockfill dam is ensured.

Description

technical field [0001] The invention relates to a gravity face rockfill dam and a construction method thereof, belonging to the technical field of hydraulic engineering. Background technique [0002] The existing face rockfill dam is mainly composed of reinforced concrete faceplate and rockfill body. The reinforced concrete faceplate mainly plays the role of anti-seepage, and the rockfill body mainly plays the role of bearing the water load on the upstream side of the dam body to maintain the stability of the dam body. Whether the reinforced concrete faceplate can work normally or not directly determines the safety performance of the dam body, so the rational design of the reinforced concrete faceplate is one of the key factors in determining the safety of the face rockfill dam. Although reinforced concrete panels have many advantages, they also have many disadvantages, such as: low tensile strength, brittle material, poor plasticity, low adaptability to deformation, etc. I...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a gravity face rockfill dam and its construction method. High advantages and face rockfill dams have the advantages of strong adaptability to deformation, low cement consumption and low cost, fundamentally solve the problem of cracks in the face of high face rockfill dams, and improve the safety and reliability of high face rockfill dams sex

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