High sediment concentration waterflood river bed tearing simulation test method

A technique for simulating experiments and uncovering the bottom of rivers, applied in hydraulic models, etc.

Inactive Publication Date: 2010-05-26
YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION
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  • Abstract
  • Description
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  • High sediment concentration waterflood river bed tearing simulation test method
  • High sediment concentration waterflood river bed tearing simulation test method

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[0015] Such as figure 1 As shown, the simulation test device for uncovering the bottom of the river under high-sand flooding includes a test tank 1, a mixing tank 2 is set outside the test tank 1, a submersible pump 3 is set in the mixing tank 2, and the submersible pump 3 passes through the tank circulation pipe 4 and the test The tank 1 is connected, and the electromagnetic flowmeter 5 and the automatic control valve 6 are installed on the tank circulation pipe 4. The left end of the test tank 1 is the muddy water inlet section 7, and the right end is the muddy water outlet section 8. The pool 9 is connected, and the backwater pool 9 is connected with the test tank 1 through the tank circulation pipe 4. A flat gate 10 is provided between the muddy water outlet section 8 and the test tank 1. The test tank 1 is equipped with a water level probe 11 and The mobile measuring bridge 12 has a flow meter installed on the mobile measuring bridge 12 to follow the measurement of hydraul...

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Abstract

The invention relates to a hydraulic model with the international patent classification (IPC) of E02B 1/02, in particular to a high sediment concentration waterflood river bed tearing simulation test method. The method utilizes a special test device and adopts flyash as model sand, wherein extremely fine flyash with a median diameter being smaller than 0.01mm is adopted to simulate an adhesive mud layer of deposits, fine flyash with a median diameter of 0.03mm is adopted to simulate suspended sand, and coarse particle flyash with a median diameter of 0.05mm is adopted to simulate loose bed sand. The invention provides a feasible test method for researching the problems of a river bed tearing phenomenon of the Huang river and the breaking of consolidation cohesive soil of the water conservancy industry, lays foundations for recognizing the generation mechanism of the river bed tearing phenomenon and establishing a scouring index of river bed tearing, and plays a certain active role in the development of the subject of river sediments.

Description

Technical field: [0001] The invention relates to a hydraulic model, the IPC international patent classification number of which is E02B 1 / 02, in particular to a simulated test of high-sediment floods to expose the river bottom and the start of consolidation cohesive soil method. Background technique: [0002] In the Xiaobei main stream of the Yellow River and the Weihe River, when floods with high sediment content pass through, the riverbed will often undergo severe concentrated erosion, and after a certain period of siltation and sedimentation in the early stage, a "clay layer" with high density and high strength will occur. , sometimes lifted from the bed, rolled up like a "carpet", exposed to the water surface in pieces, with an area of ​​several square meters or even more than ten square meters, and then broken in a short time , collapsed, and was carried away by the current. The masses vividly call the violent scouring of the riverbed under the condition of high-sedim...

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Application Information

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IPC IPC(8): E02B1/02
Inventor 江恩慧李军华曹永涛赵连军张清张林忠刘燕万强夏修杰董其华顾霜妹赵新建黄鸿海刘杰卢冬梅常华荆凯应一梅王婷范建强
Owner YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION
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