Quick emergency protection and plugging technique for dam failures and application method thereof

Abstract

Disclosed is an application method for quick emergency protection and plugging for dam failures by virtue of a floating wall blocking system technique. The application method is characterized by firstly quickly covering and protecting a broken dyke of a dam breach by virtue of a protective floating wall technique to control the expansion of the breach so as to provide safety guarantee for furtherplugging, using ''incomplete blocking floating walls'' to plug the breach step by step on the basis thereof, namely, using blocking floating walls without a waterproof cloth layer and with a relatively large gap between every two adjacent wall bodies to plug the breach two or more times, and finally completely plugging the breach by virtue of a full-type blocking floating wall which is provided with a waterproof cloth. The application method has the beneficial effects of simplifying the operation of the novel plugging technique for the dam failures through the improvement of the method and theapplication of the novel technique, facilitating the construction, and achieving the control and plugging of the breach more quickly and more efficiently.

Description

[0001] technical background: [0002] The floating wall blocking system is a flexible blocking system. It is a bank breaching and blocking technology that uses floating walls as the main blocking method. Picture 9 As shown, it consists of floating walls (including the "blocking floating wall 23" used to block the breach, the "protective floating wall 21" used for the protection of the dyke, and the "protecting floating wall 21" used to construct the backwater cofferdam downstream of the breach. The wall 22"), the working floating platform 24 and 25 (providing a control platform for assembling and controlling the floating wall), and the ground anchor 26 (providing sufficient anchoring force for the sealing operation of the entire system) are composed of three parts. The working principle is: A floating wall composed of multiple combined individuals, namely floating wall walls, is connected in series and suspended vertically in the water. Under the control of the working floating pla...

AI Technical Summary

Problems solved by technology

[0016] Through the study of the actual combat data of breach rescue and blockage and the on-the-spot investigation of the breach site, it is found that there are some imperfections and unreasonable places in the existing technical scheme of the floating wall blocking system, and the most important problem is: in the existing In the technical plan, the crevasse sealing is carried out simultaneously upstream and downstream. After the protection of the crevasse and embankment is completed, the backwater cofferdam is firstly built downstream of the crevasse to raise the downstream water level, balance the water level drop of the crevasse, and reduce the strength of the crevasse sealing. In actual breach rescue, when the water level difference between the upstream and downstream is large, it is very difficult to build a backwater cofferdam against the impact of floods pouring down from the breach. If it is a certain distance away from the downstream of the breach, the backwater cofferdam will be too long , the project volume is too large, it is also very difficult, and it is difficult to complete in a short time, which cannot meet the needs of rapid rescue

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