Multistage energy dissipating and water seeping debris flow landslide dam and construction method thereof

Abstract

The invention discloses a multistage energy dissipating and water seeping debris flow landslide dam and a construction method thereof. The multistage energy dissipating and water seeping debris flow landslide dam comprises a water seeping barricade, energy dissipating stone cages and energy dissipating columns. A plurality of grooves are formed in the backface of the water seeping barricade, and aplurality of longitudinal water seeping channels and transverse water seeping channels are arranged in the water seeping barricade; the energy dissipating stone cages are arranged on the bevel backface of the water seeping barricade; a plurality of single stone cages are successively arranged and fixed as a whole, permeable geotechnical cloth is arranged between the energy dissipating stone cagesand the water seeping barricade, a plurality of scour prevention steel plates are arranged on the bevels of the energy dissipating stone cages, and the scour prevention steel plates are fixed together with the energy dissipating stone cages; the energy dissipating columns are arranged on the upstream side of the water seeping barricade and comprises a plurality of waste tires which are successively arranged from top to bottom, concrete columns are arranged in the middle of the waste tires, and the interiors of the waste tires are filled with pebbles. The multistage energy dissipating and water seeping debris flow landslide dam can weaken the impact energy of a debris flow, permeate and discharge water in an accumulation body of the debris flow and reduce damage of mud, stones and water tobuildings jointly, so that the debris flow disaster is reduced.

Description

technical field [0001] The invention belongs to the field of mud-rock flow prevention and control, and in particular relates to a multi-stage energy-dissipating and seepage mud-rock flow retaining dam, and also relates to a construction method thereof. 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] The outbreak of debris flow in my country is mainly stimulated by continuous rainfall, heavy rain, especially the concentrated rainfall of extreme torrential rain. Therefore, the time law ...

AI Technical Summary

Problems solved by technology

However, the current retaining dams only consider the functions of reducing the flow velocity of debris flow and retaining debris flow when they are designed.

Images