Earth rock cofferdam modification method used for emergently draining flood exceeding standard

Abstract

The invention discloses an earth rock cofferdam modification method used for emergently draining flood exceeding the standard. Two rows of high-pressure jet grouting piles spaced by a certain distanceare arranged at the proper positions of a cofferdam to form high jet barricades according to the flow of the flood exceeding the standard, the 2-3 m range of the upstream slope of an original earth rock cofferdam between the two high jet barricades, the top of the cofferdam and the downstream slope are excavated to a certain depth, galvanized wire gabions which are 1 m thick and are mutually hinged are stacked on the groove excavation portion from the upstream 2-3 m range slope to the downstream slope foot, and a layer of concrete which is 10 cm thick is sprayed to each galvanized wire gabion. The method avoids the risk that the earth rock cofferdam collapses when meeting the flood exceeding the standard, project building is influenced, and then the threat is caused to life and property of people, and has the advantages of being simple in structure, convenient in construction, high in applicability, little in investment, safe, guaranteed and the like.

Description

technical field [0001] The invention relates to a method for emergency release of excessive flood, in particular to an earth-rock cofferdam reconstruction method for emergency release of excessive flood. Background technique [0002] The earth-rock cofferdam is made of earth-rock filling, and is mostly used as an upstream and downstream horizontal cofferdam, and can be combined with the interception dike, which can make full use of excavation waste and local materials. It has strong adaptability to the foundation, simple construction technology, and can be directly used The excavation and transportation equipment of the main project is carried out by mechanized rapid construction, which is the most widely used cofferdam form in my country. However, compared with concrete cofferdams, the disadvantages of earth-rock cofferdams are also obvious, that is, when they encounter floods exceeding the standard, it is likely to cause floods to overflow, surrounding rocks to collapse, ca...

AI Technical Summary

Problems solved by technology

However, compared with concrete cofferdams, the disadvantages of earth-rock cofferdams are also obvious, that is, when they encounter floods exceeding the standard, it is likely to cause floods to overflow, surrounding rocks to collapse, causing serious harm to the project, and even bringing safety hazards to people's lives and properties. There is a huge threat, which puts forward higher requirements for emergency treatment measures in case of floods exceeding the standard

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