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Method for determining optimal plant density of three-dimensional geonet pad ecological slope protection slope surface

A technology for geonet mats and ecological slope protection, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as the inability to accurately calculate the optimal plant density on the slope.

Active Publication Date: 2019-11-12
HEBEI UNIV OF TECH
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Problems solved by technology

[0011] The technical problem to be solved by the present invention is: the determination method of the optimum plant density on the slope surface of three-dimensional geotechnical mesh pad ecological slope protection, the method combines rainfall, runoff coefficient, typical soil particle diameter on the slope surface, slope surface roughness, slope angle, plant density, etc. Tiller coefficient, leaf shape, actual dry bulk density of soil, stable dry bulk density after compaction, film water parameters and comprehensive cohesive force parameters are used to determine the optimal plant density on the ecological slope protection slope of the three-dimensional geotechnical mat, which overcomes the existing technical problems The defect that the optimal plant density on the slope cannot be accurately calculated during the construction of the three-dimensional geotechnical mat ecological slope protection

Method used

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  • Method for determining optimal plant density of three-dimensional geonet pad ecological slope protection slope surface
  • Method for determining optimal plant density of three-dimensional geonet pad ecological slope protection slope surface
  • Method for determining optimal plant density of three-dimensional geonet pad ecological slope protection slope surface

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Embodiment 1

[0068] The method for determining the optimal plant density of the three-dimensional geotechnical mat ecological slope protection slope in this embodiment, the specific steps are as follows:

[0069] The first step is to determine the runoff depth after the slope is saturated:

[0070] Determine the runoff depth h after the slope is saturated according to the rainfall and runoff coefficient,

[0071] The formula (1) for determining the runoff depth h after slope saturation is as follows,

[0072] h=ΨP (1),

[0073] In the formula (1), h is the runoff depth after the slope body is saturated, and the unit is mm during calculation; Ψ is the runoff coefficient, and in this embodiment, in the green ecological slope protection, Ψ gets 0.2; P is the rainfall, and the unit is mm, P is the maximum daily rainfall in the past five years in the ecological slope protection construction area;

[0074] The second step is to determine the minimum starting velocity of slope soil particles: ...

Embodiment 2

[0114] Except in the 3rd step, the net distance b of the stem or the leaf of the horizontally arranged plants is taken as a specific value, and except b=C, other is the same as embodiment 1.

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Abstract

The invention discloses a method for determining the optimal plant density of a three-dimensional geonet pad ecological slope protection slope surface, and relates to stability of the side slope or the slope. The method comprises: calculating the runoff depth, the minimum slope soil particle starting speed and the slope average runoff speed according to the runoff coefficient, the slope typical soil particle diameter, the slope roughness, the slope angle, the plant tillering coefficient, the leaf shape, the actual dry volume weight of soil, the stable dry volume weight after compaction, the film water parameter and the comprehensive binding power parameter; obtaining the total transverse row number of plants on the ecological grass planting slope surface according to the relationship between the average runoff speed of the slope surface and the minimum starting speed of slope soil particles; finally, determining the optimal plant density of the slope surface of the three-dimensional geonet pad ecological slope protection according to the total transverse row number of the plants. The defect that in the prior art, the optimal plant density of the slope surface cannot be accurately calculated in the construction process of the three-dimensional geonet pad ecological slope protection is overcome, a large number of surplus purchased grass seeds are prevented, and the engineering cost is greatly reduced.

Description

technical field [0001] The technical solution of the present invention relates to the stability of side slopes or slopes, specifically, a method for determining the optimal plant density on the ecological slope protection slope of a three-dimensional geotechnical net cushion. Background technique [0002] As people pay more and more attention to the ecological environment, the "green" method of ecological slope protection has been derived, among which the three-dimensional geotechnical mat ecological slope protection has developed rapidly as a new form of slope protection. This slope protection technology uses the characteristics of plant root reinforcement, transpiration drainage, and stems and leaves to reduce rainwater splash erosion to improve the slope surface cracking, displacement, and runoff infiltration caused by local rainwater erosion, thereby improving the quality of slope engineering. It is conducive to improving the ecological environment of the original slope ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 王子寒付奇岩肖成志景晓昆
Owner HEBEI UNIV OF TECH
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