A construction method of anti-scour discharge channel for barrier lake

Abstract

The invention discloses a construction method for an anti-scouring discharge channel of a dammed lake. The side slope steel wire mesh is laid on both side slopes of the discharge channel, a reinforced geomembrane is laid on the bottom of the discharge channel, and a reinforced geomembrane is laid on the side slopes on both sides Reinforced gabions are set at the bottom of the slope, and multiple rows of prefabricated pier stones are set in the discharge channel. A single row of prefabricated pier stones is arranged along the width direction of the discharge channel. A single prefabricated pier stone is fixed at the bottom of the discharge channel through the first anchor rod. Adjacent prefabricated pier stones are connected by second anchor rods, and the second anchor rods close to the slope are fixedly connected on both sides of the slope; the discharge trough constructed by the construction method of the present invention can effectively reduce the scouring intensity of water flow and flow velocity, enhance the anti-scouring ability of the slopes on both sides of the discharge trough and the bottom of the trough, and reduce damage and loss to the downstream. The construction method of the invention has a short construction time, can shorten the emergency preparation time as much as possible, can ensure the excavation of the discharge tank and the reinforcement of the tank body in a short time, and various geotechnical materials used in the construction process are cheap.

Description

Technical field[0001]The present invention relates to the field of emergency treatment of the Zhuzhu Lake, and in particular to a construction method for improving the anti-brush discharge groove for emergency discharge of the lague.Background technique[0002]In order to reduce the water level and the storage capacity of the lake, the risk-controlled risk of the barrier leakage is to be controlled, and the excavation slot is the main emergency response measures of the Zhuzhu Lake. However, the currently used drain grooves are all aziplasia material, and the length of the slope in the lower reaches of the slope is larger and the slope is relatively small, in the continuous brush of the water flow, the discharge groove section cannot be Keep, as the discharge is increasing, it is easy to cause the downstream flood to overflow the river to produce disasters.Inventive content[0003]It is an object of the present invention to provide a construction method for improving the discharge groove...

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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