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基于MapGis K10平台的张家界市中心城区三维地质模型建立

2020-08-06潘卓,邓波,李嘉宝

国土资源导刊 2020年2期

潘卓,邓波,李嘉宝

文章编号:1672-5603(2020)02-74-6

摘 要 张家界地貌以山地丘陵为主,地质条件复杂,地质资料稀缺,存在发生地质灾害的隐患。摸清本区的地质构造,建立张家界中心城区三维地质模型,能够为中心城区深部地质特征研究提供参考依据。本论文以湖南省财政项目—《张家界城市地质环境综合调查评价》成果为依托,全面收集工作区内的基岩地质图件、第四系地质图件、钻孔数据等资料,对中心城区地质环境条件进行系统分析研究,基于mapgis k10平台的三维地质建模功能,建立张家界中心城区81.74km2的三维地质模型。

关键词 三维地质建模;mapgis k10;交互建模;分区图自动建模

中图分类号:P628 文献标识码:A

Establish Of Three-dimensional Geological Model in Zhangjiajie's Central Urban Area Based on MapGis K10 Platform

Pan Zhuo, Deng Bo, Li Jiabao

(Natural Resources Affairs Center of Hunan Province,Changsha Hunan 410004)

Abstract: In Zhangjiajie city, landscape is dominated by mountain and hill, geological conditions are complex and geological data is scarce, there are hidden danger of geological hazards occurred. Surveying regional geological structure and establishing three-dimensional geological model in central urban area of Zhangjiajie city can provide a reference basis for study on deep geological characteristics of central urban area. Based on the financial project of Hunan Province "comprehensive investigation and evaluation of urban geological environment in Zhangjiajie", this paper comprehensively collects data of bedrock geological map, Quaternary geological map and borehole data in the working area, and systematically analyzes and researches the geological environment conditions in the central urban area. And the three-dimensional geological model of 81.74km2 in central urban area of the Zhangjiajie has been built by using the three-dimensional geological modeling function of the MAPGIS K10 platform.

Keywords: three-dimensional geological modeling; mapgis k10; interactive modeling; automatic modeling of partition map

0 引言

在三維可视化和地质建模方面的研究中,发达国家起步较早,早在1987年Calson E.就从地质学的角度提出了地下空间结构的三维概念模型[1]。1989年Bak、Smith和Raper提出地学信息的三维表达形式。国外相继出现了很多成熟三维地质软件[2] [3],如澳大利亚的Surpac,美国的M-KEagles等。而国内在2005年城市地质调查试点工作开展后,相继有6个城市建立了三维可视化信息平台及三维地质模型。

该类型服务平台以服务城市经济社会可持续发展为宗旨,在充分整合已有地质成果的基础上,以mapgis为平台,尽可能扩大了信息类地质资料社会化公益性服务的范围,提升了公益性地质资料的服务水平。

本论文主要是探讨在mapgis K10平台下,利用城市地质环境调查成果建立张家界中心城区三维地质模型的思路,所遇到的相应问题及解决方式。……

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