Protective arrangement structure for debris flow gully

Abstract

The invention relates to a protective arrangement structure for a debris flow gully, and is applicable to arrangement of a construction site platform in construction of a hydropower station. The protective arrangement structure comprises reinforced gabion overflow blocking dams, an earth and rockfill dam and a drainage tunnel, wherein the reinforced gabion overflow blocking dams and the earth and rockfill dam are distributed in the width direction of a river channel; the reinforced gabion overflow blocking dams are on the upstream side of the earth and rockfill dam; a water inlet of the drainage channel communicates with the river channel between the reinforced gabion overflow blocking dams and the earth and rockfill dam; and the construction site platform is arranged on the land side of the earth and rockfill dam. According to the protective arrangement structure, the reinforced gabion overflow blocking dams fix a river bed and block movable material sources of debris flow, the earth and rockfill dam blocks potentially eruptible movable material sources of debris flow, debris flow stops in front of the earth and rockfill dam, water and stone are separated, water flows through the drainage channel, and gully water treatment and debris flow prevention are achieved.

Description

technical field [0001] The invention relates to a protective arrangement structure for mud-rock flow ditch, which is suitable for the arrangement of construction site platforms in the construction of hydropower stations. Background technique [0002] With the continuous development of hydropower projects, most of the hydropower stations are gradually extending to high-altitude canyon areas. The site conditions for building power stations in these areas are relatively poor, and it is currently commonly used to build construction sites in river ditches near the project area by taking certain blocking measures. The best way to solve the poor conditions of the construction site. According to the research in recent years, especially after the 2008 Wenchuan Earthquake, most of the river ditches near the engineering area in Southwest China have perennial flowing water and deep cuts, and are affected by the earthquake. It may cause great threats and losses to the life and property ...

AI Technical Summary

Problems solved by technology

The use of debris flow ditches in hydropower station projects is not much, and the only debris flow treatment scale at present is also small. The commonly used method is the combination of concrete retaining dam and drainage channel, but this kind of treatment method has limited drainage of debris flow, and The availability of sites downstream of the dam is also limited

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