Mould bag line curtain and method for preventing falldown of river bank

Abstract

The invention relates to a mold-bag earthwork curtain and river bank collapse prevention and cure method. It belongs to earthwork installations used in river bank collapse prevention and cure and its method. It includes mold bag ranging body. Its middle is set earth work cloth curtain. Its top end is set lifting camel. And its lower part is set sand penetrating window. Many mold bag ranging curtains are set at eroding bank along flow direction. Each of them is normal to the flow direction. The invention has the advantages of simple practice, low cost and high effect. It can reduce ranging body percentage of coverage to reduce cost, and adjust near shore water flow. It has little waterproofing action and no flood detention.

Description

technical field [0001] The invention relates to a body discharge facility for preventing and controlling river bank collapse, in particular to a molded bag row curtain for preventing and preventing river bank collapse, and belongs to the technical field of river bank management and protection. Background technique [0002] From 1993 to 1998, the direct economic losses caused by floods across the country reached as high as 1.05 trillion yuan. Bank collapse is one of the main disasters on both sides of great rivers in my country. In 1998, when floods occurred in the entire basin of the Yangtze River, Nen River, and Songhua River, there were more than 500 bank collapses, which not only caused a large area of ​​land on both sides of the bank to be lost, but also caused embankments to crack, seriously endangering the safety of the flood control embankment and destroying the river. The stability of the situation. The coastline of the middle and lower reaches of the Yangtze River...

AI Technical Summary

Problems solved by technology

Although these hydraulic measures are widely used in engineering, they all have common disadvantages: large water blocking effect, often becoming an obstacle to flood discharge during flood periods; high economic costs; serious local scour pits are likely to occur at the head of spur dikes; The efficacy depends on the intersection angle between the incoming flow and the spur, and the best angle is generally considered to be between 15° and 30°

Therefore, relying on the regulation of water flow to control bank collapse requires careful and comprehensive analysis and demonstration of the evolution trend of the river bed. It cannot be widely used on both sides of the river, and the cost is high, which will greatly change the original river flow.

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