Overflow confluence diversion and self-breaking dam earthwork plate and extraordinary flood diversion channel

Abstract

Overflow confluence diversion and self-breaking dam earthwork plate and extraordinary flood diversion channel belongs to the water conservancy project of the spillway project and the defense field ofthe dam to deal with the water attack. The project mainly includes the following steps: overflow, confluence diversion and self-breaking dam are quantized and designed ; the overflow, confluence diversion and self-breaking dam (1) comprises a road-edge stone overflow, confluence diversion and self-breaking dam (1-a), an upstream sub-bank road edge stone overflow, confluence diversion and self-breaking dam (1-b), a pipe belt and a road-edge stone overflow, confluence diversion and self-breaking dam (1-c) ; the earthwork plate of the earthwork plate and extraordinary flood diversion channel (2)is formed by a plurality of fish scale-shaped units, the fish scale-shaped units are arranged in an area with high flow velocity, and are divided into a earthwork plate seamless connection (II-I), horizontal-seam fish scale-shaped connection (II-II) according to the connection type of the fish scale-shaped unit. The present invention is applicable to the controllable automatic flood diversion of areservoir sub-dam, a main dam, a higher levee and a higher drainage head dam, and has simple structure, low cost and no permanent land occupation.

Description

technical field [0001] The invention belongs to the technical field of dike and dam extreme flood diversion 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 embankment and a geotechnical plate extreme flood diversion channel. Background technique [0002] Japan, 2018 July 5, 2018, the western part of Japan experienced heavy rain. A river in Mabi-cho, Kurashiki City burst its embankment. The flood destroyed about one-third of the houses, forcing thousands of people to climb on the roof for help. In Mabi-cho alone, at least 28 people were injured. People were killed, and the Japanese authorities issued evacuation orders to 5 million people when the rain was at its worst, but many people did not take these orders seriously. Under the theoretical and technical conditions, "Wolf is coming" is a worldwide social problem. Japan's No. 10 typhoon "Lion Rock" in 2016 caused ...

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-collapsing dams designed through experiments must be rare and rare floods, which are hardly verified by practice; a large number of small and medium-sized dams, canal head works, dikes, canal structures, cofferdams, etc., are limited by economic and technical conditions. , the norms allow super-standard flood water damage, despite massive water damage, the norms allow people to take for granted

Images