Multi-stage self-collapsing closed headwork

Abstract

The invention discloses a multi-stage self-collapsing closed headwork and belongs to the technical field of hydro project headworks. The multi-stage self-collapsing closed headwork can resist flood exceeding the designed level, is simple in structure, convenient to implement and low in construction cost and does not occupy space permanently. The problem that headworks are damaged by flood exceeding the designed level is solved through the disaster prevention and mitigation design theory of the multi-stage self-collapsing closed headwork. The structure of the multi-stage self-collapsing closed headwork comprises a flood discharge bottomland (2-2), an earthy embankment (3), a geotechnical synthetic material armour earthy flood diversion dyke (4), a geotechnical synthetic material protecting multi-stage self-collapsing earth embankment (5), an intake gate (6), a barrage gate (7), a rockfill dam (8), an earthy barrage (9), flood diversion farmlands (10), a gulch (11), rope system non-woven fabric grid bands (12) and a rope system non-woven fabric bottomland locking penetrating band (13). The structure is suitable for closed headworks with the bottomland, headworks with rockfill dams, open headwork bottomland treatment and headworks with flood exceeding the designed level outside the embankment farmland for flood diversion.

Description

technical field [0001] The invention belongs to the technical field of canal head engineering water conservancy engineering, and in particular relates to a multi-stage self-collapsing closed canal head engineering. Background technique [0002] On September 10, 2015, an embankment breach occurred in Japan. Entire houses and rows of vehicles were washed away, causing many casualties and missing, and a large amount of property loss. In the event of water blocking by the headworks of the super-standard flood, it will aggravate the overflow and collapse of embankments and barrages, resulting in casualties and property losses. Since many canal head projects are related to the national economy and people's livelihood, preventing water damage of canal head projects is an urgent technical problem to be solved. [0003] The application of rubber dams in cold regions is limited, and the combination of non-overflow earth-rock (dyke) dams, hafnium structure backwater dams, sand flushin...

AI Technical Summary

Problems solved by technology

[0008] Purpose of the present invention: provide multi-stage self-collapsing closed canal head project, realize the new closed canal head project with simple structure and low cost, solve the problem of water damage of super standard flood canal head project, and solve the catastrophic problem caused by the dam break of the canal head project The problem of dam break and surge provides people and animals with a chance to escape, and solves the worldwide problem that cannot be solved with limited normative flood standards.

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