玉林市岩溶塌陷地理信息系统

GIS技术的发展为地质灾害的资料管理、危险性评价及对策研究等提供了有力的支持工具。玉林市岩溶塌陷地理信息系统是以GIS软件—MapInfo为平台，针对岩溶塌陷的特点，用VB语言进行二次开发的集数据管理、分析统计、输出为一体的综合系统。系统中录入了建国以来，玉林市发生的71次岩溶塌陷灾害事件，共414个塌陷坑的详细资料，及30多个与岩溶塌陷有关的其它专题信息。分别归类为岩溶塌陷信息、市政信息、勘探信息、水文气象信息、玉(林)柴(油厂)塌陷子系统等。此外，系统提供了信息查询、制作专题图、统计分析等功能，方便、快捷地为地质灾害管理、城市规划、勘察设计等部门提供服务。

Geographical information system(GIS) of karst collapses in Yulin, Guangxi

The Sinkhole Information System of Yulin is introduced in thepaper. The system is developed on the platform of MapInfo professional by use of Visual Basic application. The aim of the information system is to assist governments and communities in managing information, making decision and urban planing. The system covers about 70 collapse accidents containing 414 sinkhole pits, and about 30 theme maps of sinkholes. The database includes five groups: the condition of sinkhole formation, the urban information, the geotechnical data, the hydrological and weather data, the information of Yulin Diesel Engine Factory. The main advantages of the system are as following: 1. Give a simple way to manage the information of geophysical survey, such as the results of Ground Penetrating Radar and sonic method. 2. Through the management of information of engineering geological exploration with different scale, it is very easy to get any logging data and map. 3. Within a small region, the large-scale map will replace the small ones. 4. The manipulation of the system is very convenient, because all of the names of databases are listed in the menu. When users select a database, the map will display in the window immediately. Otherwise, for using GIS technique, the system has a powerful function for sorting and querying, it is therefore convenient to get the concerning messages in the way of map or table.