Construction of a particle flow model based on the characterization of heterogeneous formation parameters

doi:10.12143/j.ztgc.2021.S1.009

Home > Archive>Volume 48, Issue S1, 2021 >52-60. DOI:10.12143/j.ztgc.2021.S1.009

Construction of a particle flow model based on the characterization of heterogeneous formation parameters
DOI:
                        10.12143/j.ztgc.2021.S1.009
                    
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                        XIA Yuhongye1,2XIA Yuhongye
Key Laboratory of Metallogenic Prediction of Non-ferrous Metals and Geological Environment Monitoring， Ministry of Education， Changsha Hunan 410083, China;School of Geosciences and Info-Physics, Central South University, Changsha Hunan 410083, China
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SUN Pinghe1,2SUN Pinghe
Key Laboratory of Metallogenic Prediction of Non-ferrous Metals and Geological Environment Monitoring， Ministry of Education， Changsha Hunan 410083, China;School of Geosciences and Info-Physics, Central South University, Changsha Hunan 410083, China
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WU Xinmin3WU Xinmin
Central South Construction Group Ltd., Changsha Hunan 410015, China
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SHENG Hanyang3SHENG Hanyang
Central South Construction Group Ltd., Changsha Hunan 410015, China
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WANG Xinlong1,2WANG Xinlong
Key Laboratory of Metallogenic Prediction of Non-ferrous Metals and Geological Environment Monitoring， Ministry of Education， Changsha Hunan 410083, China;School of Geosciences and Info-Physics, Central South University, Changsha Hunan 410083, China
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ZHANG Shaohe1,2ZHANG Shaohe
Key Laboratory of Metallogenic Prediction of Non-ferrous Metals and Geological Environment Monitoring， Ministry of Education， Changsha Hunan 410083, China;School of Geosciences and Info-Physics, Central South University, Changsha Hunan 410083, China
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Affiliation:1.Key Laboratory of Metallogenic Prediction of Non-ferrous Metals and Geological Environment Monitoring， Ministry of Education， Changsha Hunan 410083, China;2.School of Geosciences and Info-Physics, Central South University, Changsha Hunan 410083, China;3.Central South Construction Group Ltd., Changsha Hunan 410015, China
Clc Number:P634
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Abstract:

The method of obtaining and characterizing heterogeneous formation parameters is an important basis for the reconstruction of shallow geological bodies. Geological modeling based on heterogeneous formation is intended to characterize the apparent parameters and physical and mechanical parameters of the soil with stochastic uncertainties and fuzzy uncertainties. The Weibull distribution is used to describe the local stratum information， and the Diamond-Square fractal interpolation algorithm， combined with calculation of the fractal dimension of the heterogeneous formation by the differential box-counting， is applied to calculate the overall stratum parameters. The PFC3D numerical simulation software， combined with data sampling by the Markov chain Monte Carlo method， is used to model the rock particles and soil particles in the heterogeneous formation. The simulation results of the heterogeneous formation indicate that its failure process and stress-strain curve are much more complicated than those of the homogeneous formation since the content and distribution characteristics of large rock particles have a significant impact on the mechanical properties of the soil. The modeling method in this paper is helpful to the study on heterogeneous formation parameter characterization.

Key words:heterogeneous formation;particle flow model;Weibull distribution;fractal interpolation;differential box-counting

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History

Received:June 15,2021
Revised:June 15,2021
Adopted:June 17,2021
Online: December 06,2021
Published: September 01,2021

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