Application of a vertex chain operation algorithm on topological analysis of three-dimensional fractured rock masses
Application of a vertex chain operation algorithm on topological analysis of three-dimensional fractured rock masses作者机构：Department of Geotechnical Engineering School of Civil Engineering Tongji University Shanghai 200092 China Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education Tongji University State Key Laboratory for Geomechanies and Deep Underground Engineering Xuzhou 221008 China a shanghai Tunnel Engineering & Rail Transit Design and Research Institute Shanghai 200235 China
出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)
年 卷 期：2017年第11卷第2期
页 面：187-208页
核心收录：
学科分类：1305[艺术学-设计学（可授艺术学、工学学位）] 08[工学] 0813[工学-建筑学] 0814[工学-土木工程]
基 金：The research was conducted with funding provided by the National Basic Research Program of China (973 program No.2014CB046905) the National Science Foundation of China (Grant No. 41672262) the State Key Laboratory for Geo mechanics and Deep Underground Engineering (No.SKLGDUEK1303) and the Department of Communications of Guangdong Province (No.2016)
主 题：morphology block assembling vertex operation discontinuities
摘 要：Identifying the morphology of rock blocks is vital to accurate modelling of rock mass structures. This paper applies the concepts of directed edges and vertex chain operations which are typical for block tracing approach to block assembling approach to construct the structure of three-dimensional fractured rock masses. Polygon subtraction and union algorithms that rely merely on vertex chain operation are proposed, which allow a fast and convenient construction of complex faces/loops. Apart from its robustness in dealing with finite discontinuities and complex geometries, the advantages of the current methodology in tackling some challenging issues associated with the morphological analysis of rock blocks are addressed. In particular, the identification of complex blocks with interior voids such as cavity, pit and toms can be readily achieved based on the number and the type of loops. The improved morphology visualization approach can benefit the pre-processing stage when analyzing the stability of rock masses subject to various engineering impacts using the block theory and the discrete element method.
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