Rock-fill dam and dam crest spillway anti-sliding stable structure thereof

Abstract

The invention relates to a rock-fill dam and a dam crest spillway anti-sliding stable structure thereof. The rock-fill dam comprises the dam crest spillway anti-sliding stable structure and a dam body; the dam crest spillway anti-sliding stable structure comprises a cushion layer and a groove body; the length direction of the groove body is parallel to the plane where the slope of the dam body is located; the cushion layer is used for being poured on the dam body; the groove body is arranged on the cushion layer; the cushion layer comprises a slope section and an anti-sliding section; one side of the slope section is connected with one side of the anti-sliding section in the length direction of the groove body; the length direction of the slope section is parallel to the length direction of the groove body; the length direction of the anti-sliding section and the length direction of the slope section are arranged at a non-flat angle or zero angle; and an included angle of the non-flat angle or zero angle is formed between the anti-sliding section and the dam body. The slope section and the groove body tend to slide downwards under the action of self weight, and the anti-sliding section and the dam body act to generate anti-sliding force opposite to the sliding-down direction, so that the cushion layer and the groove body are prevented from sliding down, the anti-sliding stability of the cushion layer and the groove body is guaranteed, and the safety of the rock-fill dam is also improved.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a rockfill dam and its crest spillway anti-sliding and stable structure. Background technique [0002] The foundation of the face rockfill dam has strong applicability and high cost performance, and is one of the most widely used retaining dam structures at present. When the reservoir uses a face rockfill dam to retain water, it is usually selected to modify the spillway with a low and dumb mouth, or when the slope of the dam bank slope is gentle and the terrain and geological conditions are good, it is also possible to choose to build a spillway on the dam bank slope to vent excess flood water . However, when the terrain of the reservoir does not have a low and dumb mouth, and the slopes on both sides of the dam are high and steep, excavating the spillway on the dam abutment slope will bring a huge amount of earth and stone works, high slope treatment, lar...

AI Technical Summary

Problems solved by technology

However, when the topography of the reservoir does not have a low and dumb mouth, and the slopes on both sides of the dam are high and steep, excavating the spillway on the dam abutment slope will bring a huge amount of earth and stone works, high slope treatment, large-scale ecological damage and soil and water damage. Maintenance, huge amount of spoil and huge project cost

In the spillway of the concrete face rockfill dam crest, the dam body is the foundation of the spillway, and the deformation of the dam under the action of water pressure will cause deformation and secondary internal force of the spillway structure; Problems such as pressure, water discharge drag force and flow-induced vibration affect the deformation and stability of the face dam

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