International Geologiical Congress - Oslo 2008

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HYH-02 Groundwater resources and management Part 2

 

Formation of earth fissures caused by exploitation of deep groundwater in the Hengshui area, North China plain

 

Xiuyan Wang, Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences (China)
Yizhong Zang, Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences (China)
Jinzhe Wang, Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences (China)
Shuangping Han, Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences (China)
Changli Liu, Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences (China)
Xiangquan Li, Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences (China)
 

 

Earth fissures increasingly occur in the North China Plain. We investigated the localities, shapes, underground width, depth, dip angle and extension of earth fissures recently found in the Hengshui area by field survey and geophysical prospecting. We then analyzed the relationships between the formation of earth fissures and regional structural movement, hydrogeological & engineering geological conditions, and between the depths of earth fissures and the drawdown of deep groundwater level. We consider that the development of earth fissures are mainly controlled by regional tectonic activities but promoted by the withdrawal of deep groundwater resources. This study might be of value for eliminating geo-hazards associated with deep groundwater withdrawal.

 

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