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Artificially turning method of sandy river engineering project mobile bed model and artificially turning diversion trench

A technology of moving bed models and diversion tanks, which is applied in hydraulic models, artificial waterways, hydraulic engineering, etc.

Inactive Publication Date: 2012-07-04
YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a sandy river in which the model site is not long enough and the width is relatively rich to carry out an artificial turning channel model, and the model water movement parameters before and after turning are required to remain unchanged. Artificial Turning Method and Artificial Turning Diversion Groove of River Engineering Moving Bed Model

Method used

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  • Artificially turning method of sandy river engineering project mobile bed model and artificially turning diversion trench
  • Artificially turning method of sandy river engineering project mobile bed model and artificially turning diversion trench
  • Artificially turning method of sandy river engineering project mobile bed model and artificially turning diversion trench

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Embodiment

[0079] Embodiment: Combined with the river engineering moving bed model test of the river section from Lijin to Qing 7 in the lower reaches of the Yellow River, according to the above-mentioned "artificial turning" principle and principle, the artificial turning design of the channel model of this river section is carried out.

[0080] 1. Overview of the simulated river reach: The simulated river reach is about 80km long, which belongs to the estuary of the Yellow River. The changes of scouring and silting in the estuary reach are simultaneously affected by two factors: incoming water and sand and changes in the tail section. The upper section of the estuary reaches There are many engineering control guides, and the plane change is relatively small; the lower section of the estuary taillu section has flat and low-lying terrain. When the siltation in the taillu section extends to a certain extent, it is easy to change the course without engineering control and guidance, and swing...

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Abstract

The invention relates to an artificially turning method of a sandy river engineering project mobile bed model and an artificially turning diversion trench. The method comprises the following steps: arranging artificially turning diversion slots on a reach which has smooth and stable river regime, symmetric geometry form section, riverbed erosion and deposition with small change and transverse distributed flow hydraulic elements; determining the geometric elements of the turning angle, the turning radius, the joint section length and the transition section length of the artificially turning diversion slots; obtaining the sloping according to flow wearing resistance calculated in terms of the model draining flow, flow rate and water-depth parameter; calculating the final slope for designingthe inlet and outlet of the diversion slot by the original sloping and additional sloping of a riverway; calibrating according to the test requirement; adjusting the sloping of the artificially turning diversion slots by the test of different-magnitude flood; and finishing the design of artificially turning diversion slots. By the method and device of the invention, the restriction of insufficient model length can be eliminated under the condition of not changing the model scale.

Description

technical field [0001] The invention relates to an artificial turning method for a sandy river moving bed model and an artificial turning diversion trough. The method and the device are a kind of artificial turning method when the length of the test site is not enough, and it is difficult to arrange all the river sections of the model according to the trend of the prototype river. The width of the site allows, and under the condition that the hydraulic law of the original river flow in the simulated river reach remains unchanged, the model design technology of turning and laying the river section below a suitable section of the simulated river section at an appropriate angle. Background technique [0002] The river system is a natural landform unit formed by the long-term evolution and adjustment of the river in a certain geographical and social environment. Therefore, various characteristic elements including the direction of the river and the orientation of the development...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B1/02E02B5/00
Inventor 姚文艺王德昌侯志军
Owner YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION
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