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Rock-like heap tunnel structure analysis method based on discrete element method combined with load structure method

A technique of discrete element method and tunnel structure, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as the lack of methods for accurately and comprehensively calculating structural stress response and stability characteristics

Active Publication Date: 2021-01-05
中电建路桥集团有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of the analysis and calculation of the surrounding rock structure of the "rock + soil" rock pile tunnel, there is no method based on the discrete element method that can accurately and comprehensively calculate the mechanical response and stability characteristics of the structure.

Method used

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  • Rock-like heap tunnel structure analysis method based on discrete element method combined with load structure method
  • Rock-like heap tunnel structure analysis method based on discrete element method combined with load structure method

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Embodiment

[0044] like figure 1 , figure 2 Shown:

[0045] A method for structural analysis of rock pile tunnels based on discrete element method combined with load structure method, characterized in that,

[0046] Step 1: Obtain the geometric characteristics and distribution characteristics of the surrounding rock composition of the rock-like pile, and then obtain the deformation characteristics of the rock-like pile (rock + soil) under the action of force;

[0047] Specifically include:

[0048] Step 1.1 collects images on site, and determines the particle size and spatial distribution structure parameters of rocks in the rock-like piles on site, so as to obtain particle size and structural characteristic data; provide them to step 2.1, that is, input them into step 2 "software one". How to realize the particle size and spatial distribution of rocks in rock-like piles on site is not a key technology, and can be realized through existing computer image recognition technology, or ev...

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Abstract

The invention relates to the field of tunnel structure design and safety construction in rock-like heap surrounding rock. A rock-like heap tunnel structure analysis method based on a discrete elementmethod combined with a load structure method is characterized by comprising the steps that firstly, structural characteristics and particle size of a rock-like heap tunnel surrounding rock are determined, then a discrete element YADE program numerical model is established according to engineering practice, rock-like heap tunnel structure surrounding rock pressure is calculated, a surrounding rockpressure result, calculated by the discrete element program numerical model, of the rock-like heap tunnel structure is applied to the rock-like heap tunnel load structure model in a load form, and internal force calculation and stability analysis of the rock-like heap tunnel structure are performed. A new solution can be provided for the stability analysis of the rock and soil rock-like heap tunnel structure engineering problem.

Description

technical field [0001] The invention relates to the field of tunnel structure design and safe construction in the surrounding rock of rock-like piles. Background technique [0002] The analysis and calculation of tunnel structure is of great significance to the safety and stability of tunnel design and construction. The application of methods such as finite element method based on continuum mechanics in tunnel engineering has been very mature. The applicability of mechanical methods is obviously limited, and there are strong uncertainties in the determination of tunnel surrounding rock pressure and load. [0003] The discrete element method developed for discontinuous media has strong advantages in dealing with the discontinuity of rock mass, and has received more and more attention and application. A more realistic form of distribution of surrounding rock pressure in discrete bodies. However, in terms of the analysis and calculation of the surrounding rock structure of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/23G06F119/14
CPCG06F30/13G06F30/23G06F2119/14Y02T90/00
Inventor 艾祖斌张子新张少强黄昕欧阳汛江传彬李小昌
Owner 中电建路桥集团有限公司