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中国科学院大学学报 ›› 2013, Vol. 30 ›› Issue (1): 24-32.DOI: 10.7523/j.issn.1002-1175.2013.01.005

• 环境科学与地理学 • 上一篇    下一篇

基于空间索引的随机分布三维裂隙网络中裂隙对相交判断方法

刘华梅, 王明玉, 宋现锋   

  1. 中国科学院研究生院资源与环境学院及水系统安全研究中心, 北京 100049
  • 收稿日期:2011-05-09 修回日期:2012-04-17 发布日期:2013-01-15

Stepwise approach for identifying pairwise fracture intersections in 3D fracture networks

LIU Hua-Mei, WANG Ming-Yu, SONG Xian-Feng   

  1. Center for Water System Security & College of Resources and Environment, Graduate University, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2011-05-09 Revised:2012-04-17 Published:2013-01-15
  • Supported by:

    Supported by National Science Foundation of China (40672172,40972166),Major State Basic Research Development Program of China (973 Program) (2010CB428804), the Major Science and Technology Program for Water Pollution Control and Treatment(2009ZX07212-003),and the Major Science and Technology Program of Beijing (D09040903700801)

摘要:

明确裂隙间的相交关系,去除那些对流体流动与溶质运移无贡献的、与其他裂隙不联通的裂隙,能够大大提高裂隙中流体流动和溶质运移数值模拟的效率.提出一种基于空间索引的随机分布三维裂隙网络中裂隙对逐步相交判断的方法.通过数值模拟试验比较了该方法与传统的穷举法,结果表明,该方法速度快、成本低,大大减少了裂隙岩体渗流计算量,缩短了裂隙岩体流体渗流和溶质运移数值模拟计算时间.

关键词: 空间索引, 三维随机分布裂隙网络, 相交裂隙对, 逐步判断方法

Abstract:

Numerical computation for flow and solute transport in fractured rocks will be very efficient if only the connected fractures are kept. An approach is proposed for progressively identifying pairwise fracture intersections in 3D stochastically distributed fracture networks based on spatial indexing. By comparing the simulation results obtained using the proposed stepwise approach and the traditional exhaustion algorithm, we observed that, the proposed approach is much more effective.

Key words: spatial indexing, 3D stochastically distributed fracture networks, pairwise fracture intersection identifications, stepwise approach

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