三维地质建模技术在岩土工程数值模拟中的应用  

Application of 3-D Geological Modeling Technique in Geotechnical Engineering Numerical Simulation

作　　者：王环玲[1] 徐卫亚[2] 

机构地区：[1]河海大学交通学院,南京210098 [2]河海大学岩土工程研究所,南京210098

出　　处：《长江科学院院报》2008年第5期125-129,共5页Journal of Changjiang River Scientific Research Institute

基　　金：国家重点基础研究发展规划(973)项目(2002CB412707);国家自然科学基金(50128908)

摘　　要：地质问题本身的复杂性,使得三维地质建模成为制约岩土工程数值模拟发展的障碍之一。充分利用工程地质勘察的基本资料,根据所研究地质对象的空间形态和相互关系,以AutoCAD为平台,借助AutoLISP二次开发技术,进行AutoCAD三维地质模型的构建。探讨了建模过程中关于地表、地层以及软弱带等模拟的方法以及奇异单元的优化处理技术。最后,将此建模方法应用到实际工程中。结果表明,所建立的模型基本上保存了原地质体的信息,在网格规模一定时充分利用了地质体的控制信息,避免了建模过程中不必要的简化所造成的失真。3-D geological modeling is one of the obstacles of restricting the geotechnical engineering numerical simulation development as a result of the geology issue itself complexity. By making the best of engineering geological investigation data, and on the basis of the AutoCAD, the 3-D geological modeling is established based on the secondary development AutoLISP. The methods of the earth＇s surface simulation, stratum simulation, fault simulation etc., are established by the space shape and the interrelation of researched geological objects. The disposal technique about network and singular element in the course of modeling is discussed. In the end, the result obtained from this method shows that the model can save the basic mountain information, make full use of control data in the slope and reflect the original slope feature and slope shape after excavation when the grid scale is certain, thus resulting in avoiding the distortion in the model building process caused by incorrect simplification. 3-D geoscience technique which is used in the numerical simulation of geotechnical engineering, not only can find out space shape and interrelation of each geological element, but also can do pretreatment for numerical calculation.

关 键 词：三维地质建模 岩土工程 数值模拟 工程岩体 

分 类 号：P642[天文地球—工程地质学]