Design method of self-collapsing dike flood diversion channel

Abstract

The invention discloses a design method of a self-collapsing dike flood diversion channel, and belongs to the field of national defense of water conservancy projects of non-normal spillway projects and flood diversion gates and water attack response of dikes. The method comprises a self-bursting dam (1-), a flood diversion channel (2), a self-collapsing dike disaster prevention and reduction design theory and an over-standard flood dike disaster prevention and reduction theory. The self-bursting dam (1-) comprises a self-bursting geotechnical plate impervious wall self-bursting dam, a self-bursting geotechnical membrane cloth impervious curtain self-bursting dam, a self-bursting geotechnical plate membrane cloth impervious curtain body sub-dam guiding and flushing self-bursting dam, a flooding undermining guiding and flushing self-bursting dam, a partition clay impervious body self-bursting dam and a high-weir overflow slow self-bursting dam, a self-bursting geotechnical plate membranecloth anti-seepage curtain body guiding and flushing opening self-bursting dam and a flooding and confluence guiding and flushing self-bursting dam. The flood diversion channel (2) comprises a reinforced concrete flood diversion channel, a reinforced concrete flood diversion gateway and a geosynthetic material flood diversion channel. The invention is simple in structure, low in cost, convenientto manage and suitable for automatic flood diversion of any water head dam.

Description

technical field [0001] The invention belongs to the technical field of dike and dam extreme flood diversion conservancy engineering, and also belongs to the technical field of national defense against water attack, and specifically relates to a design method of a self-collapsing dike and a flood channel. Background technique [0002] Embankment breaches without flood diversion facilities and people have no time to escape: the authorities often warn of typhoons and rainstorms, but due to the uncertainty of exceeding the standard flood and the location of embankment breaches, it is rare for local people to encounter embankment breaches Yes, this has led to the public not paying attention to the flood warnings issued by the authorities, which is a problem faced by flood control management; it is also a problem to divert the flood of small and medium-sized rivers in the lack of construction of flood diversion areas; The dam was breached by war water attack, which resulted in the...

AI Technical Summary

Problems solved by technology

At present, there is no design theory for self-collapsing dikes. The artificial blasting flood diversion method is generally used. The advantage can overcome the uncertainty of consolidated clay and hardened road surface. The disadvantage is that the flood season management and explosives management require high requirements. Once the blasting flood diversion is out of control

The failure of dams is very common. There is no feasible and consensus design theory for self-failure dams, and there is no complete set of technologies. The reason is that the current design theory of self-failure dams is to quantify and meet the flood standards stipulated in the code, that is, from the start of dam failure to the reservoir. The time when the water level rises to the standard water level coincides with the time of self-breakage of the dam, and the mechanism of various dam self-breakage phenomena is very complicated. At present, there is no mathematical model to solve it; at present, there is only a large-scale overall test of the self-breakage dam of the diversion channel through test methods. There are similarities. The statically indeterminate structure of the three-sided consolidated clay of the flushing trough complicates the problem. At the same time, the test cannot solve the problem of uncertainty, infinity of flood and uncertainty of self-collapse caused by consolidated clay and hardened road surface. At present, all self-breaking dams that have been designed through experiments must be rare and rare floods, which are hardly verified by practice; limited by economic and technical conditions, the regulations can only allow a large number of small and medium-sized dams, canal headworks, and embankments with low-standard floods , canal system buildings and cofferdams were destroyed by excessive floods

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