Method for constructing river and lake levee breach closure with steel sheet pile

Abstract

The invention relates to a method for constructing a river and lake levee breach closure with steel sheet piles, which can effectively prevent or control flood of rivers and lakes and reduce disasters. The invention adopts the technical scheme follows: firstly, driving border piles for pier heads at two ends of a burst door, carrying out defending processing on a U-shaped steel plate pile wrappinghead to prevent from enlarging the burst door due to the erosion of water; secondly, setting up a water sports platform floating bridge between every two burst doors, wherein the water sports platform floating bridge is used as a marine piling platform and a traffic channel for transporting steel plate piles; thirdly, constructing a spur dike approaching the river on the upstream of the burst door to selectively remove deposition outwards and reduce the flow and the erosion at a burst; and fourthly, carrying out closure and sealing on the steel plate piles, wherein the top of a cofferdam is supported and defended by a layer of joist steel in a purlin enclosing way, middle longitudinal supports adopt H-steel and distributed at a distance of 5 m, sand pumped from the closured cofferdam is backfilled, and the platform floating bridge is removed. The invention has the advantages of rapid construction speed, high efficiency and quality, wide application range, simple method, easy construction and application, disaster reduction and huge economic and social benefits and is effectively applied to blocking up bursts of rivers and lakes.

Description

1. Technical field [0001] The invention relates to a method for blocking mouths of rivers and lakes, in particular to a construction method for embankment blocking of rivers and lakes with steel sheet piles. 2. Background technology [0002] Flood disaster is one of the natural disasters that bring huge losses to human beings in the world today. Restricted by natural geographical characteristics and social and economic conditions, flood disasters in my country have always been very serious. About two-thirds of the country has flood disasters of different types and degrees, and the frequency and severity of their occurrence are relatively high in the world. outstanding. Since the 1990s, there have been many nationwide catastrophic floods in my country, with a cumulative loss of more than 900 billion yuan. Flood control and disaster reduction has become a major and urgent task facing our country. [0003] Embankments of rivers and lakes are an important part of my country's ...

AI Technical Summary

Problems solved by technology

Affected by social, economic conditions and historical reasons, there are three major problems in my country's existing embankments: poor foundation conditions, poor embankment materials and construction quality, and many pits and ponds behind the embankment, etc.

[0005]Currently commonly used plugging methods are mainly traditional earth-rock plugging, gabion plugging, gabion strings, tetrahedral concrete and steel-wood-earth-rock composite dams However, they are all limited by conditions such as water depth, flow velocity, drop, and soil quality outside the breach. For breaches with large water depth, high flow velocity, and large drop, auxiliary methods such as sinking ships or building moon-shaped cofferdams have to be used to reduce the gap. Velocity, dispersion drop

There are many problems in the implementation of these technologies, such as low operating efficiency, long construction time, and high risk factor for operators.

And it needs to consume a lot of manpower and material resources. Therefore, research and development of plugging equipment and methods under modern scientific and technological conditions to achieve the purpose of quickly and effectively plugging breaches and minimize flood losses and casualties is an urgent problem to be solved. major technical problems

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