Soil-core-wall rock-fill dam and construction method thereof

Abstract

The invention discloses a soil-core-wall rock-fill dam with better burst resistance and a construction method thereof. The soil-core-wall rock-fill dam comprises a soil core wall, wherein one side of the upstream of the soil core wall is provided with an upstream rock-fill material area, an upstream transition material area and an upstream refiltering material area which are arranged in sequence along the water-flowing direction; one side of the downstream of the soil core wall is provided with a downstream refiltering material area, a downstream transition material area and a downstream rock-fill material area which are arranged in sequence along the water-flowing direction; and the downstream rock-fill material area is internally provided with a concrete burst-resistant wall. The soil-core-wall rock-fill dam disclosed by the invention has the advantages that since the concrete burst-resistant wall is arranged in the downstream rock-fill material area, the burst resistance of a dam body can be greatly improved, and even though the flood is over the top or the dam top is opened to cause discharge of water in a reservoir due to the external-force factor, the whole burst of the dam also can not be caused due to the existence of the concrete burst-resistant wall. The soil-core-wall rock-fill dam disclosed by the invention is suitable for being promoted and applied in the field of rock-fill dams.

Description

technical field [0001] The invention relates to the field of rockfill dams, in particular to an earth core rockfill dam and a construction method thereof. Background technique [0002] The soil core rockfill dam is a dam type constructed using local materials, and has strong applicability, and is a common dam type that is widely used. Earth core rockfill dams include straight core rockfill dams and oblique core rockfill dams. The core wall of a straight core rockfill dam is located in the middle of the dam body, and the core wall of an oblique core rockfill dam is located upstream of the dam body. The existing soil core rockfill dam includes a soil core wall. The upstream side of the soil core wall is sequentially provided with an upstream rockfill area, an upstream transition material area, and an upstream reverse filter material area along the water flow direction. The downstream side of the soil core wall Along the water flow direction, there are downstream anti-filter m...

AI Technical Summary

Problems solved by technology

[0003] Since the existing rockfill dams with soil core walls are piled up with granular materials, their collapse resistance is poor, and flooding or external forces cause the dam crest to open and the reservoir water to discharge, which will cause damage to the dam. Overall collapse. According to incomplete statistics, most of the rockfill dam failures that have occurred so far are caused by flooding.

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