三维建模技术在区域工程地质勘查中的应用研究

Application and Research of Three Dimensional Modeling in District Geologic Survey

近年来,北京地区规划新城勘查工作大规模展开,大量的地质资料信息需要进行整合利用,并且为了满足新城勘查的精度要求,迫切需要对隐蔽、复杂的地下空间进行精细的描述。三维地质建模系统,凭借其强大的空间信息管理、地质信息解译及空间分析功能,成为解决以上问题的首选工具。本文从软件界面、系统优势、建模思路对Creatar三维建模软件进行了介绍,并以房山新城为例进行了模型的创建和分析。结果表明Creatar软件能迅速完成地质体及结构体模型的创建,并且其切片和推进等分析功能能够实现对地质体某一重点部位的着重观察,可以为建筑场地选址、地下空间建设与数据管理提供地质信息支持,提高工作效率,在新城勘查工作中发挥了重要的作用。如果能进一步在软件中引入渗流场、应力场分析功能,则将使三维地质建模技术,在区域地质勘查领域拥有更为广阔的应用前景。

In recent years,plenty of geologic information and documents need to be integrated and made use of while geologic survey is being carried out in planned new city area on large scale.Due to satisfying the accuracy requirement,precise description of the hidden and complex underground space is urgently needed.Three dimensional modeling system becomes the best tool to solve mentioned problems above as it has powerful functions of space data management,geological information explanation and spatial analysis.This essay,from the interface,systematic advantage and modeling thought,presents a brief introduction,a model creation and analysis on new Fangshan District in Beijing as an example.The result proves that Creatar can swiftly create a model based on geological body,and its wafer slicing and propulsion function can contribute to emphasized observation on specified key point.It plays an important role in survey work of new city area,as it can improve efficiency in building site selection,underground space building and geological data management.The three dimensional modeling shall have a brighter future in the application of district geological survey field if the analysis functions of seepage field and stress field can be brought in.