Earth and rockfill dam impermeable layer structure

Abstract

The invention relates to an earth and rockfill dam impermeable layer structure. The earth and rockfill dam impermeable layer structure comprises a dam body, a dam body impermeable body, a grouting body of a dam foundation, an in-dam drainage layer and a downstream drainage prism body, wherein the grouting body of the dam foundation is located right below the dam body impermeable body, the groutingbody is formed by grouting a row of grouting holes vertically drilled and tunneled along the axis of a dam from the ground surface, the dam body impermeable body is formed by connecting one or more waterproof concrete precast blocks in the middle of the dam body, holes are formed in a reinforced concrete face plate on the right wall surfaces of the one or more waterproof concrete precast blocks to form a hole-distributed reinforced concrete face plate, the in-dam drainage layer is laid on the right side of the hole-distributed reinforced concrete face plate, the tail end of the hole-distributed reinforced concrete face plate is connected with the downstream drainage prism body, a concrete cover plate is arranged between the dam body impermeable body and the grouting body, and a pile is fixed on the concrete cover plate. The earth and rockfill dam impermeable layer structure has the advantages that the construction speed is fast, the impermeable and water-stopping effect is good, the dam body stability is good, and good technical and economic benefits are achieved.

Description

technical field [0001] The invention relates to an anti-seepage layer structure of an earth-rock dam, which belongs to the field of hydraulic engineering. Background technique [0002] An earth-rock dam is a water retaining dam built by earth, stone or mixed materials through casting, rolling and other methods. Earth-rock dam is a dam type with the longest history, and it is also the most widely used and fastest-growing dam type in dam engineering construction in the world. At present, there are more than 10,000 retaining dams in my country, among which earth-rock dams account for about 100,000. Due to the existence of pores between soil and rock materials, leakage channels are easily formed under the action of upstream and downstream water level differences when retaining water. In the danger relief and reinforcement projects of earth-rock dams, leakage is the main disease, and leakage not only wastes precious water resources In severe cases, it will cause seepage damage ...

AI Technical Summary

Problems solved by technology

Due to the existence of pores between soil and rock materials, leakage channels are easily formed under the action of upstream and downstream water level differences when retaining water. In the danger relief and reinforcement projects of earth-rock dams, leakage is the main disease, and leakage not only wastes precious water resources In severe cases, it will cause seepage damage to the dam body, leading to dam failure

If there is a dam failure, the consequences will be very serious, and it will bring huge losses to the lives and property of the people downstream

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