基于多边形的TOUGH2模拟器网格生成方法  

Method for polygon-grid mesh generation of TOUGH2 simulator

作　　者：胡立堂[1] 张可霓[1] 邓媛媛[1] 

机构地区：[1]北京师范大学水科学研究院地下水污染控制与修复教育部工程研究中心,北京100875

出　　处：《工程勘察》2010年第12期32-37,共6页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金(40872159);中国科学院广州天然气水合物研究中心开放基金(o807s1);北京市地下水资源安全评价及污染防控技术研究与示范(D07050601510000)

摘　　要：针对TOUGH2模拟器网格数据较难生成的特点,在总结分析已有的网格生成工具的优缺点基础上,介绍了基于多边形的网格生成方法。该方法先将研究区离散为多个三角形网格,再将其转化为多边形网格。基于水文地质参数分区和地理信息系统软件,可生成各结点的水文地质参数分区信息,再利用统计软件将已知点的高程和厚度信息扩展到模拟层的结点,最终可生成TOUGH2模拟器需要的网格输入文件。以北京市平原区网格生成说明了方法的合理性。这些成果为TOUGH2模拟器的推广应用提供了参考,并将提高TOUGH2的使用效率。The mesh generation in TOUGH2 simulator is very difficult for many model users.After summarizing the advantages and disadvantages of the existing mesh generation tools,this paper introduces a new method for polygon-grid mesh generation.The method first discretizes the study area into many triangle meshes,and then converts them to polygon-grid mesh.Based on the partition of geological parameters as well as GIS software,the new approach can produce the information of hydrogeological parameters.By using statistical software to obtain elevation and thickness of all nodes in the mesh from known information of limited nodes,the paper finally puts forward a method for generating a mesh input file for TOUGH2 simulator.The rationality is validated by the case study in the Beijing plain.These results supply references for the application of TOUGH2 simulator,which will improve the use efficiency of TOUGH2 simulator.

关 键 词：TOUGH2 三角网格 多边形网格 地理信息系统 前处理 

分 类 号：P641.2[天文地球—地质矿产勘探]