矿业科学技术学报(英文版)2023,Vol.33Issue(12) :1469-1485.DOI:10.1016/j.ijmst.2023.10.004

Development of an improved three-dimensional rough discrete fracture network model:Method and application

Peitao Wang Chi Ma Bo Zhang Qi Gou Wenhui Tan Meifeng Cai
矿业科学技术学报(英文版)2023,Vol.33Issue(12) :1469-1485.DOI:10.1016/j.ijmst.2023.10.004

Development of an improved three-dimensional rough discrete fracture network model:Method and application

Peitao Wang 1Chi Ma 2Bo Zhang 2Qi Gou 2Wenhui Tan 2Meifeng Cai2
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作者信息

  • 1. Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine,University of Science and Technology Beijing,Beijing 100083,China;State Key Laboratory of Water Resource Protection and Utilization in Coal Mining,CHN Energy Shendong Coal Group Co.,Ltd.,Beijing 102201,China;School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China
  • 2. Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine,University of Science and Technology Beijing,Beijing 100083,China;School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China
  • 折叠

Abstract

Structure plane is one of the important factors affecting the stability and failure mode of rock mass engi-neering.Rock mass structure characterization is the basic work of rock mechanics research and the important content of numerical simulation.A new 3-dimensional rough discrete fracture network(RDFN3D)model and its modeling method based on the Weierstrass-Mandelbrot(W-M)function were presented in this paper.The RDFN3D model,which improves and unifies the modelling methods for the complex structural planes,has been realized.The influence of fractal dimension,amplitude,and sur-face precision on the modeling parameters of RDFN3D was discussed.The reasonable W-M parameters suitable for the roughness coefficient of JRC were proposed,and the relationship between the mathemat-ical model and the joint characterization was established.The RDFN3D together with the smooth 3-dimensional discrete fracture network(DFN3D)models were successfully exported to the drawing exchange format,which will provide a wide application in numerous numerical simulation codes includ-ing both the continuous and discontinuous methods.The numerical models were discussed using the COMSOL Multiphysics code and the 3-dimensional particle flow code,respectively.The reliability of the RDFN3D model was preliminarily discussed and analyzed.The roughness and spatial connectivity of the fracture networks have a dominant effect on the fluid flow patterns.The research results can pro-vide a new geological model and analysis model for numerical simulation and engineering analysis of jointed rock mass.

Key words

Jointed rock mass/Discrete fracture network/Roughness/Weierstrass-Mandelbrot function/3D modeling/Rock mechanics

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基金项目

National Key R&D Program of China(2021YFC2900500)

National Natural Science Foundation of China(52074020)

National Natural Science Foundation of China(42202306)

Open Fund of State Key Laboratory of Water Resource Protection and Utilization in Coal Mining(WPUKFJJ2019-06)

Interdisciplinary Research Project for Young Teachers of USTB(Fundamental Research Funds for the Central Universities)(FRF-IDRY-21-001)

Natural Science Foundation of Jiangsu Province,China(BK20200993)

出版年

2023
矿业科学技术学报(英文版)
中国矿业大学

矿业科学技术学报(英文版)

CSTPCDCSCDEI
影响因子:1.222
ISSN:2095-2686
参考文献量12
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