摘要
三维地质模型能够完整准确地表达复杂地质现象的边界条件,直观地再现地层单元的空间展布及其相互关系,最大限度地提高地层分析的直观性和准确性。本文首先介绍了基于钻孔数据的栅格法三维地层建模,通过栅格层之间的运算关系处理土层之间拓扑关系,能够大大减少拓扑关系处理的计算量;利用Kriging插值方法建立宁波轨道交通2号线三维地层模型,并对空间地质参数分布进行了计算分析,结果表明:该模型可以实现对对层状地质结构的三维剖切,能满足工程地质分析和地质解释等应用的实际需要。
3D geologic models can completely and unambiguously define the geologic structures for the site being modeled, including complex boundaries and embedded seams which can help geologists and engineers to understand their research objects better and greatly enhance the accuracy of geologic analysis. The method of grid surfaces for building three-dimension soil model base on drill holes information is introduced in this paper. In this frame, the complexity of dealing with topology relationship among the strata will be greatly reduced by the simple algorithm of the gird surfaces which representing DEM of the strata bottom surface. The interpolation method of Kr/ging is introduced in the developing of the 3D geologic models of line2 of Ningbo urban rail transit project and the analysis of parameters of geological data in space. The project cases have demonstrated that the technology can meet the practical requirement of engineering geological analysis and geological explanation ,especially to layer geological structure.
出处
《科技通报》
北大核心
2012年第9期103-108,共6页
Bulletin of Science and Technology
基金
土木工程宁波市重点学科项目(C00805114302)
