HAO Jingrun,FAN Xiaoping,QIAN Hao,et al.Shallow Structural Features of Wufengshan⁃Xilaiqiao Fault[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(05):1129-1136.
HAO Jingrun,FAN Xiaoping,QIAN Hao,et al.Shallow Structural Features of Wufengshan⁃Xilaiqiao Fault[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(05):1129-1136. DOI: 10.13409/j.cnki.jdpme.201905018.
Shallow Structural Features of Wufengshan⁃Xilaiqiao Fault
The paper analyzes the shallow structural features of Wufengshan-xilaiqiao fault by the methods of shallow seismic exploration and composite drilling section. The results show that: (1) Wufengshan-Xilaiqiao fault is a hidden fault with an overall strike of NW direction, a tendency to NE direction, and the apparent dip angle of fault is about 60 degrees. Its upper breaking point is buried approximately 96 m below the ground surface, the maximum apparent fault distance in the control area is about 10 m; (2) The strike of Wufengshan-Xilaiqiao fault is changeable in the shallow area, extending from the west side of Yaoqiao Town to Weijiagou Village, then extending from the west to the intersection of Beigang Road and Puzhao Road, and finally passing through the east of Daolu Town; (3) Combining the results of seismic exploration and drilling, it is preliminarily considered that Wufengshan-Xilaiqiao fault latest activities for the early periods of Early Pleistocene to early periods of Middle Pleistocene. This paper is of positive significance for the comprehension of the fault activity, evaluation of its seismic risk, as well as the planning of urban anti-seismic fortification.
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