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Straight stream channel low-water meandering ecological construction method

A construction method and meandering technology, applied in construction, water conservancy projects, artificial waterways, etc., to achieve the effect of high input-output ratio, safe and reliable use, and less cultivated land occupation

Inactive Publication Date: 2015-07-08
HOHAI UNIV
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Problems solved by technology

At present, there are few studies in this area, so it is of great practical significance to solve the problem of the meandering construction of urban straight rivers

Method used

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  • Straight stream channel low-water meandering ecological construction method
  • Straight stream channel low-water meandering ecological construction method
  • Straight stream channel low-water meandering ecological construction method

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0030] Step 1: Analyze the problems existing in straight rivers, and establish the concept and principles of ecological restoration of straight rivers

[0031] By analyzing the problems of flat straightening and section regularization in straight rivers and the resulting ecological problems, it is proposed that the key to ecological improvement is to restore the meandering of the river, thereby restoring the diversity of water flow and landform characteristics , and then restore the ecological function of the straight river course.

[0032] The restoration of the planar shape of the river should be based on the natural river or the long-term development of the river. However, due to various factors, it is difficult to restore the meandering of some straight rivers on a large scale. Especially for straight rivers in cities, due to the concentration of residential and ...

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Abstract

The invention relates to a straight stream channel low-water meandering ecological construction method and belongs to the technical field of river ecological restoration. The straight stream channel low-water meandering ecological construction method comprises the first step of analyzing the ecological problems of a straight stream channel due to plane straightness and fracture surface regularization, conducting a survey on a straight stream needing to be restored to acquire stream low-water meandering hydrological data and calculating the corresponding design water level and design flow, the second step of calculating the corresponding low-water meandering design river width according to the acquired design water level or the acquired design flow, the third step of calculating the low-water meandering morphological characteristic value according to the acquired the low-water meandering design river width, and the fourth step of determining the lengths of ecological structures stretching into the stream channel according to the river width and enabling the ecological structures to be arranged on the two banks of the straight stream channel in a staggered mode according to certain rules. According to the straight stream channel low-water meandering ecological construction method, the requirements for flood draining safety of the straight stream channel are fully considered, and the ecological transformation method is provided for a large number of existing spaced-limited straight stream channels so that low-water meandering morphology can be formed, diversified water flow and riverbed morphological conditions can be formed gradually, and the low-water river ecological conditions can be improved.

Description

technical field [0001] The invention relates to a method for ecological construction of straight rivers with low water meanders, belonging to the technical field of river ecological restoration, and in particular to a method for ecological construction of straight rivers with limited space and low water in cities. Background technique [0002] It is estimated that about 60% of the rivers in the world have undergone artificial transformation, including damming, embankment, channelization of natural rivers, cutting bends and straightening, etc. In cities, the phenomenon of artificial transformation of rivers is more prominent. Straight channel forms mainly have the characteristics of straight plane and regular cross section. The irrationality of this channel form leads to the simplification of natural hydrological conditions and river geomorphological characteristics. Straightening on the plane makes it impossible to form the meandering shape of the river under natural conditi...

Claims

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Application Information

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IPC IPC(8): G06F17/50E02B5/02
CPCY02A10/40Y02A20/402
Inventor 付中敏卓家军储明生张玮刘博雅韩卫东顾丹平
Owner HOHAI UNIV
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