High earth-rock dam slope protection structure and construction method thereof

Abstract

The invention discloses a high earth-rock dam slope protection structure which is convenient to construct and better in slope protection performance and a construction method of the slope protection structure. The high earth-rock dam slope protection structure comprises an upstream dam face and a downstream dam face which are arranged on the upstream side surface and the downstream side surface of dam body rockfill of a high earth-rock dam, the upstream dam face is mainly formed by building multiple upstream building blocks, and the downstream dam face is mainly formed by building multiple downstream building blocks; the upstream building blocks and the downstream building blocks are both of a polygon structure in a regular shape; hardcore beds are arranged between the upstream dam face and the downstream dam face and the dam body rockfill. The slope protection structure is mainly built by adopting the polygonal upstream building blocks and the polygonal downstream building blocks which are in the regular shape, the dam face integrality is good, the flatness is high, construction is convenient and quick, destruction such as loosening or rolling down or slipping is not prone to being generated in the earthquake process, the good anti-earthquake effect is achieved, and the slope protection property is better; the surface of the dam body rockfill is flatter due to the hardcore beds, and therefore building of the upstream building blocks and the downstream building blocks is facilitated.

Description

Technical field [0001] The invention belongs to the field of water conservancy and hydropower engineering, and specifically relates to a high earth-rock dam slope protection structure and a construction method thereof. Background technique [0002] High earth-rock dam has the advantages of easy material selection, low cost, simple structure, and good seismic performance. It is a dam type widely used in the field of water conservancy and hydropower engineering. The dam slope of a high earth-rock dam will be subject to erosion effects such as scouring of the reservoir water and down-slope water flow, as well as frost heave and dry cracking. Under the action of seismic load, the damage of the high earth-rock dam will first start from the top of the dam, mainly manifested as the top of the dam. The rockfill on the downstream dam surface loosens, rolls down, and even partially slides in the shallow layer. Therefore, slope protection measures must be taken on the upstream and downstrea...

AI Technical Summary

Problems solved by technology

Due to the large volume and quality of large stone blocks, artificial masonry cannot be realized, and the construction is inconvenient. In the process of mechanical masonry construction, the flatness of the dam surface is difficult to be guaranteed, which affects the overall appearance of the dam body; dry stone slope protection Artificial masonry can be carried out, although the flatness of the dam surface can be guaranteed, but due to the small size and mass of the rocks and the different shapes, the seismic performance is poor and the slope protection performance is not good. During the Wenchuan Earthquake, the downstream slope of the Zipingpu High Concrete Face Rockfill Dam was damaged by loosening, rolling and sliding of the dry stone near the dam crest; Disadvantages such as high labor costs

The block stone slope protection structure and other concrete slope protection structures still have the problem of inconsistency with the surrounding ecological environment because the vegetation cannot grow on the surface

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