Rock-fill concrete core wall cemented rock-fill dam and construction method thereof

Abstract

The invention discloses a rock-fill concrete core wall cemented rock-fill dam and a construction method thereof. The rock-fill concrete core wall cemented rock-fill dam comprises a rock-fill concretecore wall and cemented rock-fill dam bodies, wherein the rock-fill concrete core wall is positioned on the central position; the cemented rock-fill dam bodies are formed at the two sides of the rock-fill concrete core wall; the rock-fill concrete core wall comprises rubbles and a first self-compact cement base material which is compacted and filled into holes of the rubbles, so that rock-fill concrete is formed through cement hydration reaction; the cemented rock-fill dam body comprises a rock-fill material, a second self-compact cement base material and a sandy soil material; the rock-fill material and the second self-compact cement base material form a cemented rock-fill material framework; and the sandy soil material is filled into the cemented rock-fill material framework. The rock-fill concrete core wall cemented rock-fill dam has the characteristics of a small dam size, strong foundation adaptation, small ram body uneven settling, certain flood overtopping resistance, less cementdosage, low hydration heat and the like.

Description

technical field [0001] The invention belongs to the field of water conservancy engineering, and in particular relates to a rockfill concrete core wall cemented rockfill dam and a construction method thereof. Background technique [0002] Rockfill dam is a kind of dam with rockfill body as support and materials such as clay, concrete or asphalt concrete as anti-seepage body. The types of anti-seepage body mainly include face plate and core wall. At present, earth-rockfill dams with a height of more than 150m are mainly rock-fill dams. The dam of Shuibuya Hydropower Station is the highest concrete face rockfill dam in the world, with a height of 233m. The rockfill body is mainly constructed by rolling. The rolled rockfill material is prone to rheology under long-term high stress. At the same time, the rockfill particles are broken, resulting in non-uniform settlement of the dam body, cracking of the core wall or cracks in the face plate. For concrete face rockfill dams, the c...

AI Technical Summary

Problems solved by technology

For rock-fill dams, when encountering large floods, there is a risk of overflowing the top of the rock-fill dam, and it is necessary to set up a spillway, which greatly increases the project investment

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