Soil disturbance range judgment method based on discrete element model

Abstract

The invention relates to a soil disturbance range judgment method based on a discrete element model, which comprises the following steps of: A, establishing two groups of same soil body discrete element models, wherein one group is used for carrying out simulation action, and the other group is not operated; B, calculating disturbance indexes of the soil particles at each position after the soil particles are subjected to simulation action; C, calculating a matching rate according to a real disturbance range obtained by the physical test and a maximum disturbance index and a minimum disturbance index calculated for all soil particles; D, sequentially taking values within the maximum disturbance index range and the minimum disturbance index range, calculating the matching rate wherein the obtained maximum value of the matching rate is the threshold index of sampling this time; and E, comparing the threshold index with the disturbance index to obtain the disturbance range of the currentsampling. According to the method, the disturbance ranges of different soil bodies can be determined through discrete element simulation, and the method has wider adaptability and universality.

Description

technical field [0001] The invention relates to a method for judging the range of soil disturbance, in particular to a method for judging the range of soil disturbance based on a discrete element model. Background technique [0002] Discrete element simulation is a type of computer simulation. When the discrete element model is used to simulate the action of each soil particle in the soil, the main method is to regard the soil as a composition of discrete soil particles. The real soil The relevant internal physical and mechanical properties are reflected by the contact force between discrete soil particles in the computer. [0003] Many documents in the prior art have described related technologies in this field, for example: [0004] "A high-efficiency discrete element numerical calculation particle search and operation method for rock and soil" (patent application number is CN201410405178.4), which explains the key steps in the discrete element analysis process; [0005]...

AI Technical Summary

Problems solved by technology

[0012] It can be seen from the prior art disclosed above that most of the current prior art are aimed at specific discrete element algorithms or specific rock and soil samples with specified physical and mechanical characteristics obtained through discrete elements, and those involving computer discrete elements are all Discuss the process and results of discrete element analysis, or change or control key parameters in traditional analysis methods, or propose specific analysis methods according to the target results; and the existing technologies of physical test disturbance are all aimed at specific soil measurement of disturbances, without a wider discussion, the applicability is not strong

Images