IMECH-IR  > 流固耦合系统力学重点实验室
Multiscale hierarchical analysis of rock mass and prediction of its mechanical and hydraulic properties
Liu XL; Han GF(韩国锋); Wang EZ; Wang SJ; Nawnit K
Source PublicationJournal of Rock Mechanics and Geotechnical Engineering
2018
Volume10Issue:4Pages:694-702
ISSN1674-7755
AbstractEngineering geological and hydro-geological characteristics of foundation rock and surrounding rock mass are the main factors that affect the stability of underground engineering. This paper presents the concept of multiscale hierarchical digital rock mass models to describe the rock mass, including its structures in different scales and corresponding scale dependence. Four scales including regional scale, engineering scale, laboratory scale and microscale are determined, and the corresponding scaledependent geological structures and their characterization methods are provided. Image analysis and processing method, geostatistics and Monte Carlo simulation technique are used to establish the multiscale hierarchical digital rock mass models, in which the main micro- and macro-structures of rock mass in different geological units and scales are reflected and connected. A computer code is developed for numerically analyzing the strength, fracture behavior and hydraulic conductivity of rock mass using the multiscale hierarchical digital models. Using the models and methods provided in this paper, the geological information of rock mass in different geological units and scales can be considered sufficiently, and the influence of downscale characteristics (such as meso-scale) on the upscale characteristics (such as engineering scale) can be calculated by considering the discrete geological structures in the downscale model as equivalent continuous media in the upscale model. Thus the mechanical and hydraulic properties of rock mass may be evaluated rationally and precisely. The multiscale hierarchical digital rock mass models and the corresponding methods proposed in this paper provide a unified and simple solution for determining the mechanical and hydraulic properties of rock mass in different scales.
KeywordMultiscale hierarchical digital rock mass models Numerical analysis Evaluation of rock mass quality
Indexed ByEI ; CSCD
Language中文
Funding Organizationthe Outstanding Youth Science Foundation of National Natural Science Foundation,the National Key Research and Development Plan,the National Natural Science Foundation of China,the Open Research Fund Program of the State Key Laboratory of Hydroscience and Engineering, Tsinghua University
CSCD IDCSCD:6304301
Ranking2
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78534
Collection流固耦合系统力学重点实验室
Recommended Citation
GB/T 7714
Liu XL,Han GF,Wang EZ,et al. Multiscale hierarchical analysis of rock mass and prediction of its mechanical and hydraulic properties[J]. Journal of Rock Mechanics and Geotechnical Engineering,2018,10(4):694-702.
APA Liu XL,韩国锋,Wang EZ,Wang SJ,&Nawnit K.(2018).Multiscale hierarchical analysis of rock mass and prediction of its mechanical and hydraulic properties.Journal of Rock Mechanics and Geotechnical Engineering,10(4),694-702.
MLA Liu XL,et al."Multiscale hierarchical analysis of rock mass and prediction of its mechanical and hydraulic properties".Journal of Rock Mechanics and Geotechnical Engineering 10.4(2018):694-702.
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