Water flow impact depth monitoring device of intelligent flood control early warning system

Abstract

The invention relates to the technical field of hydrological monitoring, and particularly relates to a water flow impact depth monitoring device of an intelligent flood control early warning system. The device comprises a controller, a fixing column and a plurality of impact sensing units. The fixing column is vertically inserted into riverbed sediment beside a pier, the impact sensing units are evenly arranged on the fixing column in the vertical direction, and the signal output ends of the impact sensing units are electrically connected with the signal input end of the controller. The impact sensing units which are buried in the sediment and are vertically and linearly arranged are adopted, the position of the sediment impacted by a water flow is obtained in a magnetic field change detection mode, then an impact depth is obtained, and the device is low in cost, simple in structure and easy to arrange in a large number.

Description

technical field [0001] The invention relates to the technical field of hydrological monitoring, in particular to a water flow impact depth monitoring device for an intelligent flood control early warning system. Background technique [0002] The safety and stability of the pier structure system of highway crossing bridges depends on the severity of the pier foundation being scoured by the river for a long time, that is, the degree of scour. In the early warning of river flood control, the degree of washout, as an important judgment index of flood control early warning, is equally important. [0003] The degree of scour depends on factors such as river flow, flow velocity, the amount of entrained sand and gravel, riverbed soil quality and composition, and the cross-sectional area through which water flows. Accurate water impact depth data cannot be obtained through calculation. When the flood peak comes, a large amount of sand and gravel entrained by the flood will continuo...

AI Technical Summary

Problems solved by technology

[0003] The degree of scour depends on factors such as river flow, flow velocity, amount of entrained sand and gravel, river bed soil quality and composition, and cross-sectional area through which water flows. Accurate water impact depth data cannot be obtained through calculation

When the flood peak comes, a large amount of sand and gravel entrained by the flood will have a continuous impact on the pier foundation, generate eddy currents near the side wall of the bridge foundation and continue to hollow out the soil around the foundation. Under the action of continuous and repeated floods, the riverbed at the bottom of the pier foundation will collapse. Severe local scour will occur, which will affect the stability and safety of the viaduct foundation

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