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

A technology of moving bed model and diversion groove, which is used in hydraulic models, artificial waterways, hydraulic engineering, etc.

Inactive Publication Date: 2011-04-06
YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION
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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 dynamic bed model test of the river section from Lijin to Qing 7 in the lower reaches of the Yellow River, and 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. The general situation of the simulated river section: the simulated river section is about 80km long, which belongs to the estuary section of the Yellow River. Most of them have engineering control and guidance, and the plane changes are relatively small; the tail section of the estuary in the lower section is flat and low-lying. When the tail section is silted to a certain extent, it is easy to divert without engineering control and swing on the plane. The transition is very prominent. When laying out the model according to the selected plane scale of 1:500, the selected site is relatively short, with a shortfall of 56m. Therefore, it is planned to lay o...

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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 designing the 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 of a dynamic bed model of a sandy river and an artificial turning diversion trough. If the width of the site is allowed, and under the condition that the hydraulic laws of the original river flow of the simulated river section remain unchanged, the model design technology of turning and laying out the river section below a certain 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 environment and social environment according to its inherent laws. Therefore, various characteristic elements including the direction of the river and the direction of the development of the river course are the regular manifestations of the river process in a specific natural environment. Obviously, in the simulation test, if the river course is art...

Claims

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Application Information

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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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