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

JIANG Xiao zhen+1, GAO Jin chuan+2, XUE Liu\+3 (1.Institute of Karst Geology, CAGS. Guilin\ 541004, China;2.China University of Geosciences, Wuhan\ 430074, China; 3.Guilin Library, Guilin\ 541004, China)  
The Sinkhole Information System of Yulin is introduced in the paper. 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.
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