Study on Karst Development Characteristics and Hydrogeological Conditions of Linear Engineering in Karst Area
The hydrogeological conditions in karst area are generally complex.The linear engineering has the characteristics of long and narrow route,many cross-geological units and large changes in geological conditions,and the difficulty of hydrogeological investigation increases.In this paper,through the comprehensive hydrogeological survey method combining data collection,engineering geological mapping,drilling and geophysical prospecting,the karst development characteristics of the field area are analyzed from the perspectives of karst development degree and spatial distribution characteristics,and the distribution of watershed and erosion base level in the field area is found out.Then,several hydrogeological units are divided along the route,and the hydrogeological conditions such as groundwater recharge,runoff,discharge and dynamic change are analyzed.
linear engineeringkarst development characteristicshydrogeological unitcomprehensive survey method
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