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Method for creating three-stage flow passage of meandering riverway in lower Yellow River

A technology for river courses and downstream, which is applied in river regulation and other directions, and can solve the problems of large changes in the project's slippery parts, loss of control and guidance, and unfavorable flood control, so as to stabilize the river regime, prevent overburden, and enhance river channel flood and sediment transport effect of ability

Inactive Publication Date: 2011-02-16
YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are certain deficiencies in the slightly curved river regulation scheme. Since the river regulation project is designed according to the idea of ​​"reclaimed water regulation", the project layout is more adaptable to the reclaimed water flow path whose flow rate is near the regulation flow rate, but for the flow rate The existing project still has certain incompatibility for minor small floods or major floods; especially after the Xiaolangdi Reservoir is put into use, the downstream channel is at a height of 400-800m for about 300 days a year. 3 / s small water process, the duration of small water is greatly increased, and the inadaptability of the project to small water is more obvious, especially in the increase of deformed river bends, large changes in the project's slippery parts, or the loss of control of the river regime when the river is off. The abnormal river bend is extremely unfavorable to the flood control of the lower reaches of the Yellow River when the water is small.

Method used

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  • Method for creating three-stage flow passage of meandering riverway in lower Yellow River
  • Method for creating three-stage flow passage of meandering riverway in lower Yellow River
  • Method for creating three-stage flow passage of meandering riverway in lower Yellow River

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Embodiment Construction

[0017] Such as figure 1 , 2 As shown, the control and guidance engineering dam is built on the outermost side of the river. The control and guidance engineering dam is a spur group composed of impermeable earth-rock dams according to the radius of the bend. The dam crest elevation is the design regulation flow water level plus 1m superelevation. A submersible submerged dam shall be built at the delivery section at the tail of the control and guidance project dam, and the elevation of the dam crest shall be equal to the regulation flow water level. On both sides of the Zhongshui river channel in the straight river section between the two bends, permeable pile dams are arranged, and the crest elevation of the pile dams is 800m above the local level 3 The water level at / s flow is the same.

[0018] After the completion of the plan layout construction of the above-mentioned river course improvement project, at a flow rate of 800m 3 When the small water is less than / s, all riv...

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Abstract

The invention relates to a method for creating a three-stage flow passage of a meandering riverway in the lower Yellow River, of which the International Patent Classification (IPC) is E02B1 / 00 and E02B3 / 02. The method comprises the following steps of: constructing a control-guide engineering dam which comprises spur dikes made of waterproof earth-rock dams according to the radius of a river bend at the outermost side of a main design riverway; constructing a submerged dam at the chuting section at the tail part of the control-guide engineering dam, wherein the crest elevation is equal to the regulated-flow water level, and the top of the submerged dam is provided with a scour prevention facility; and distributing permeable pile dam at the two sides in a medium-size channel of a straight river section between two bends, wherein the crest elevation of the pile dam is the same as the water level with the local flow of 800m3 / s. The three-stage flow passage created by the method can control the river pattern flow passages in different states of the small-size flow passage, medium-size flow passage and flood period, realize the river stability, enhance the capabilities of releasing flood and transferring sands in the riverway, and prevent the Yellow River levee from avulsion, breakdown and other dangerous situations, thereby achieving the goal of the comprehensive treatment of the riverway in the lower Yellow River.

Description

Technical field: [0001] The present invention relates to a method of river regulation, and its IPC international patent classification numbers are E02B 1 / 00 ​​and E02B3 / 02, in particular to a third-class flow for the regulation of wandering rivers in the lower reaches of the Yellow River, which effectively controls the wandering range of the river. Road shaping method and shaping dam. Background technique: [0002] The river regulation plan for the lower reaches of the Yellow River was gradually formed during the practice of river regulation, and the slightly curved regulation plan is currently adopted. According to the law of river regime evolution and the requirements of various sectors of the national economy as a whole, the plan selects a basic flow path as the regulation flow path; constructs regulation works on the concave bank of the bend section to control and guide the flow direction of the river. This plan is called "slightly curved treatment plan" because the ben...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/02
Inventor 江恩慧曹永涛高航赵连军李军华张林忠刘燕万强张清夏修杰赵新建董其华黄鸿海顾霜妹刘杰卢冬梅常华荆凯
Owner YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION
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