Debris flow multi-stage dissipative blocking structure

Abstract

The invention relates to the technique of prevention of geological hazards, in particular to a debris flow prevention technique. The invention discloses a debris flow multi-stage dissipative blockingstructure, thus damage action of a debris flow can be lowered, and the disaster loss is relieved. According to the debris flow multi-stage dissipative blocking structure, from flowing area of the debris flow to the accumulation area, the debris flow multi-stage dissipative blocking structure is arranged in a step-by-step mode along debris flow channels from the upstream to downstream, and at leastincludes a flexible blocking net, a pile-carrying-type grid wall and a permeable buttress-type gravity dam. According to the debris flow multi-stage dissipative blocking structure, according to different geological conditions, types of the debris flows and the like, the matching structure of the flexible blocking net 2, the pile-carrying-type grid wall 3 and the permeable buttress-type gravity bam is reasonably selected, benefits of the investment in engineering construction can be given full play to the maximum extent, and cost benefit optimization is achieved. The debris flow multi-stage dissipative blocking system is very suitable for prevention of the debris flow disasters.

Description

technical field [0001] The invention relates to geological disaster prevention and control technology, in particular to mud-rock flow prevention technology, specifically a mud-rock flow multi-stage dissipation blocking structure system that can block large and small particles in the mud-rock flow step by step and consume the impact energy of the mud-rock flow. Background technique [0002] Debris flow refers to a special torrent carrying a large amount of sediment and stones due to landslides caused by heavy rain, snowstorm or other natural disasters in mountainous areas or other areas with deep valleys and steep terrain. Debris flow has the characteristics of suddenness, fast flow rate, large flow rate, large material capacity and strong destructive power. Debris flows often destroy highways, railways and other transportation facilities and even villages and towns, causing huge losses. [0003] Debris flow is a torrent formed by heavy rain and floods after saturation and d...

AI Technical Summary

Problems solved by technology

The flexible net can play a role in blocking large particles of solid matter in debris flow, but because the flexible net is easy to deform and the structure is unstable, its application range and blocking height are limited

These traditional methods can block mudslides to a certain extent, but mudslides formed by solid matter with different particle sizes and water often have huge impact energy, and it is often difficult to achieve long-term safety of treatment projects with a single blocking structure

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