Construction method of anti-scouring flood relief channel of barrier lake

Abstract

The invention discloses a construction method of an anti-scouring flood relief channel of a barrier lake. Slope steel wire meshes are laid on slopes on the two sides of the flood relief channel, a reinforced geomembrane is laid at the bottom of the flood relief channel, reinforcing steel bar gabions are arranged at the bottoms of the slopes on the two sides, multiple rows of prefabricated pier stones are arranged in the flood relief channel, each row of prefabricated pier stones are arranged in the width direction of the flood relief channel, each prefabricated pier stone is fixed to the bottom of the flood relief channel through a first anchor rod, every two adjacent prefabricated pier stones are connected through a second anchor rod, and the second anchor rods close to the slopes are fixedly connected to the slopes on the two sides. The flood relief channel constructed through the construction method can effectively reduce the scouring strength and flow speed of water flow, the anti-scouring capacity of the slopes on the two sides and the bottom of the flood relief channel is enhanced, and the damage and loss to the downstream are reduced. According to the construction method, the construction time is relatively short, the emergency preparation time can be shortened as much as possible, excavation and channel body reinforcement work of the flood relief channel can be guaranteed within a short time, and various geotechnical materials adopted in the construction process are low in price.

Description

technical field [0001] The invention relates to the technical field of emergency disposal of barrier lakes, in particular to a construction method of an anti-scour discharge trough used for emergency discharge of barrier lakes. Background technique [0002] In order to reduce the water level and storage capacity of the barrier lake, and realize the controllable risk when the barrier lake discharges, excavating the discharge channel is the main emergency treatment measure for the barrier lake. However, the commonly used dams of the discharge channels are all granular materials, and generally the length of the downstream slope of the dams along the river is relatively large and the slope is relatively small. Maintaining, as the discharge flow continues to increase, it is easy to cause downstream floods to overflow the river and cause disasters. Contents of the invention [0003] The purpose of the present invention is to provide a construction method for the anti-scour disc...

AI Technical Summary

Problems solved by technology

However, the commonly used dams of the discharge channels are all granular materials, and generally the length of the downstream slope of the dams along the river is relatively large and the slope is relatively small. Keep, as the discharge flow continues to increase, it is easy to cause downstream floods to overflow the river and cause disasters

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