Core-wall rockfill dam

Abstract

The invention discloses a core-wall rockfill dam. The core-wall rockfill dam comprises a core wall, a first revetment section and a second revetment section. A broken stone cushion layer and a first upstream rockfill area are disposed between the first revetment section and the core wall in sequence; a second upstream rockfill area is disposed between the second revetment section and the core wall; a third upstream rockfill area is disposed at the slope toe of a waterward surface; a downstream rockfill area is disposed on the downstream side of the core wall; a transition material layer is disposed between the first upstream rockfill area and the second upstream rockfill area in a joining mode; transition material layers are disposed between the first upstream rockfill area and the secondupstream rockfill area as well as between the downstream rockfill area and the core wall in a joining mode; a chimney water discharging area is disposed between the transition material layer on the downstream side of the core wall and the downstream rockfill area as well as between the bottom of the downstream rockfill area and a foundation; and fillers of the first upstream rockfill area, the second upstream rockfill area and the downstream rockfill area are a hard rock and mud rock mixed material. By means of the core-wall rockfill dam, the stability of a dam body is guaranteed, meanwhile the mud rock is utilized to the maximum degree for damming, mud rock damming is possible in the actual engineering application, the waste slag is reduced, and destruction to the environment is reduced.

Description

technical field [0001] The invention belongs to water conservancy and hydropower technology, in particular to a core rockfill dam. Background technique [0002] Rockfill dams are more and more widely used in the construction of water conservancy and hydropower projects. However, due to the influence of natural geological conditions in some projects, the local materials are mainly mudstone. Dam materials will directly lead to an increase in engineering volume and investment, and will increase the scale of the spoil ground, causing adverse effects on the environment. [0003] Patent CN201420137258.1 discloses a face rockfill dam using mudstone dam materials, which belongs to the technical field of hydropower station foundation engineering. The upstream side is a transition layer, a cushion layer and an upstream slope protection from the inside to the outside. The upstream bedding layer and The upper gravel cover layer is located in the lower part of the upstream side, and the...

AI Technical Summary

Problems solved by technology

At present, there is no plan to use mudstone to build a core rockfill dam. In actual engineering, how to effectively use mudstone to build a core rockfill dam and overcome the defects of the mudstone itself has become an urgent problem for water conservancy and hydropower engineering technicians.

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