A Study of Stochastic Generation and Connectivity of Fracture Network in Rock Mass
详细信息
- 责任者：Wang Jinli (State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering ; Hohai University ; Nanjing 210098 ; China) ; Chen Xi
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2013
- 卷期：40(2)
- 关键词：裂隙岩体 ; crack rocks
- 页码：p.30-35
- 图表：illus., 1 table, 15 refs.
- 分类号：1702
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
Based on statistic parameters of random distribution of fractures,a fracture network is generated by application of the Monte Carlo simulation technology.In terms of undirected graph theory,the backbone(conducting part) of fractures is obtained.Probability of fracture connectivity about the orientations of the uniform distribution is compared to that of the normal distribution.The Monte Carlo Experiments based on a two-dimensional fracture network model are used to validate the critical number of fractures,as well as the critical fracture length derived from Balberg and others.The result shows that the backbone of fractures is drawn quickly and easily with the undirected graph method.Under the same conditions of the fracture features,the probability of fracture connectivity for orientation following a uniform distribution is 20% larger than that of a normal distribution.When fracture connectivity probability is greater than 90%,the estimated value from Balberg and others is in gaad agreement with the actual parameter value.The results in this work provide a valuable analysis method for groundwater seepage calculation.
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