Method for monitoring change of internal force of resin mortar block during riverbed blowing up scouring period of hyper-concentration sediment flood

Abstract

The invention relates to a physical model with IPC (international patent classification) of E02B1 / 02, in particular to an analog monitoring method for a water flow turbulent fluctuation structure at the bottom of a resin mortar block during 'riverbed blowing up' scouring period of hyper-concentration sediment flood. The analog monitoring method includes prefabricating the resin mortar block by the aid of an organic glass mode box; arranging platy film type pressure sensors at the bottom of the resin mortar block; and leading a data line to be connected with a data acquisition instrument to acquiring water flow pressure signals in real time. In the analog monitoring method, the structure is simple, operation is convenient, a water flow turbulent fluctuation condition at the bottom of the resin mortar block is monitored accurately, a feasible testing method and a device are provided for further deeply researching the difficult problem of 'riverbed blowing up' phenomenon of the Yellow River, and the analog monitoring method lays the foundation for recognizing the occurrence mechanism of the 'riverbed blowing up' phenomenon and building a 'riverbed blowing up' scouring index, and provides important basis and reference for formulating a Yellow River flood control plan and planning and designing a flood prevention project.

Description

Technical field: [0001] The invention relates to a monitoring method for a hydraulic model test, and its IPC international patent classification number is E02B1 / 02, in particular to a method for simulating the internal force of clay blocks during lifting and overturning in the process of simulating high-sediment floods "uncovering the river bottom" Change process monitoring method. Background technique: [0002] In rivers with high sediment content, such as the Xiaobei main stream of the Yellow River and the Weihe River, under the action of high-sediment floods, the riverbed often undergoes severe concentrated erosion, and after a certain period of siltation and sedimentation in the early stage, the density is relatively large, The "clay layer" with high strength is sometimes lifted from the bed surface, rolled up like a "carpet", and exposed to the water in pieces, with an area of ​​several square meters or even more than ten square meters. rice, and then broken and collap...

AI Technical Summary

Problems solved by technology

At present, the model itself cannot monitor the change process of the stress of the "clay block" itself, and there is no set of effective monitoring techniques and methods for tank experiments and model tests.

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