基于钻孔数据的栅格法模拟三维土层研究

Building Three-dimensional Soil Model from Drillholes' Information by Grid Surfaces Method

建立三维的土层模型是开展岩土工程数字化基础工作之一.文章介绍运用栅格法在基于钻孔数据情况下构建土层三维模型.该方法能够在建模中简单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.在此以杭州地震小区划项目中江北区三维建模工作为例,验证了该方法能有效满足工程需要.

Building three-dimensional soil models is an important basic job of informationization for geotechnical engineering. The paper introduces the method of grid surfaces for building three-dimension soil model base on drillholes＇ information. 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 steps of building the model of north Qiantang River work area which is part of Hangzhou Seismic zonation project is elaborated to validate the method effectiveness in engineering.