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Clastic rock contact model parameter acquisition method and slope stability analysis method

A technology of contact model and clastic rock, which is applied in the field of slope engineering prevention and control, multi-level strongly weathered clastic rock slope stability coefficient calculation field, can solve the constraints of weathered clastic rock slope engineering prevention, difficult slope stability, Inhomogeneity and other problems to achieve the effect of improving calculation efficiency and calculation accuracy

Pending Publication Date: 2022-07-08
SHANXI TRAFFIC PLANNING PROSPECTING & DESIGN INST +1
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Problems solved by technology

The clastic rock contains a large number of large gravels and has significant inhomogeneity. It is difficult to obtain its mechanical parameters and analyze its slope stability by conventional means, which greatly restricts the engineering prevention and control of weathered clastic rock slopes.

Method used

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  • Clastic rock contact model parameter acquisition method and slope stability analysis method
  • Clastic rock contact model parameter acquisition method and slope stability analysis method
  • Clastic rock contact model parameter acquisition method and slope stability analysis method

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Embodiment Construction

[0049] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention more clearly understood, the embodiments of the present invention will be described in further detail below with reference to the embodiments and the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.

[0050] It is to be understood that the terms "comprising / comprising", "consisting of" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a product, device, process or method comprising a series of elements includes not only those elements , and may also include other elements, as required, not expressly listed, or inherent to such a product, apparatus, process or method. Without further limitation, an element defined by the phrases "comprising / comprising", "consisting of" does not preclude...

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Abstract

The invention provides a DEM (Digital Elevation Model)-based clastic rock contact model parameter acquisition method, which comprises the following steps: carrying out an on-site horizontal clipper test, acquiring mechanical parameters of clastic rock, and establishing an in-situ scale particle model; constructing a particle swarm optimization algorithm by using a discrete element method, and performing clastic rock contact model parameter inversion, which comprises the following steps: constructing a suitability function, and initializing a particle swarm; carrying out particle checking; updating the speed and the position of the particle; obtaining an optimal solution; and obtaining clastic rock contact model parameters. According to the method, clastic rock slope stability analysis is further carried out. According to the method, the suitability function is constructed, the particle swarm optimization algorithm is applied to invert the parameters of the clastic rock contact model, and the calculation efficiency and the calculation precision are improved. By means of the analysis method, an effective means is provided for clastic rock micromechanics parameter acquisition and slope stability analysis, and the engineering practice problems of weathered clastic rock slope stability coefficient calculation, disaster prevention and control and the like in slope engineering are solved.

Description

technical field [0001] The invention relates to the prevention and control of geological disasters, in particular to a method for obtaining parameters of a clastic rock contact model and a method for analyzing slope stability, which are used for multi-level strongly weathered clastic rock slopes in slope projects such as highways, railways, bridges and tunnels. Stability coefficient calculation, slope engineering prevention and control and other fields. Background technique [0002] Clastic rocks are widely distributed in my country. With the large-scale development of engineering construction, the number of projects using clastic rock as the rock and soil carrier is increasing, and the environmental geological problems and engineering accidents caused by the instability of low-strength or weathered clastic rock slopes are also increasing. Clastic rock contains a large number of large gravels and has significant heterogeneity. It is difficult to obtain its mechanical parame...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/25G06F111/10G06F119/02G06F119/14
CPCG06F30/13G06F30/25G06F2111/10G06F2119/02G06F2119/14Y02T90/00Y02A10/23
Inventor 刘小龙陈汝先梁世春宋晓雷王汉勋张彬
Owner SHANXI TRAFFIC PLANNING PROSPECTING & DESIGN INST
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