Gentle slope fill dam for underwater irregular slope surface and construction method thereof

Abstract

The invention discloses a gentle slope fill dam for an underwater irregular slope surface and a construction method thereof. The gentle slope fill dam for the underwater irregular slope surface can raise the water level and is constructed in a river channel to be built with a hydropower station. The gentle slope fill dam for the underwater irregular slope surface refers that concrete tetrahedrons (1) in a triangular pyramidal shape or / and concrete abnormal-shaped components in other shapes are arranged in the river channel in a multi-line and multi-row mode to form a basal dam body, rock ballast (2) is filled between the concrete tetrahedrons, a section of soil and rock stacking body (8) which is similar to a soil and rock dam is stacked in front of the basal dam body, and the top of the soil and rock stacking body of lower than the basal dam body; thus, a underwater water retaining structure is formed by stacking, and an underwater barrage (3) of which the top surface is lower than the water surface is formed; a part of river water percolates the dam body and flows downstream, and the other part of the river water flows over the upper portion of the dam crest and runs downstream. The gentle slope fill dam for the underwater irregular slope surface is small in investment, easy to construct and free of river channel depleting, and the ecological environment can be effectively protected while the hydropower station is built.

Description

technical field [0001] The invention belongs to the technical field of hydropower station barrages. Background technique [0002] Existing barrages for hydropower stations usually have a serious impact on the environment; whether they are arch dams, gravity dams, face accumulation dams or earth dams, they are all dams that completely cut off the river; the construction of hydropower stations is usually accompanied by the flooding of large areas of rice fields and cultivated land. land, woodland, and even urban and rural areas present complex migration issues. In particular, the barrage cuts off the river, and the diversion-type power station causes the river downstream of the dam to stop flowing most of the time every year, causing serious ecological damage and causing losses to the production and life of the people in the cut-off area. These traditional types of barrages are usually used in places where the river drop is large and suitable for the construction of dam-type ...

AI Technical Summary

Problems solved by technology

However, in places where the river drop is small, the investment of these types of barrages is too large, and the economic benefits are not high.

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