Establishing a monitoring network for an impoundment-induced landslide in Three Gorges Reservoir Area, China |
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| Authors: | Xianqi Luo Fawu Wang Zhenhua Zhang Ailan Che |
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| Affiliation: | (1) Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Chinese Ministry of Education, Institute of Geological Hazards Mitigation, China Three Gorges University, No. 8, Daxue Avenue, Yichang, Hubei, 443002, China;(2) Research Centre on Landslides, Disaster Prevention Research Institute, Kyoto University, Gokasho, Uji Kyoto, 611-0011, Japan;(3) School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, People’s Republic of China |
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| Abstract: | A methodology for monitoring system of an impoundment-induced landslide in Three Gorges Reservoir Area, China is introduced. Currently, based on landslide geological classification, the monitoring regions and methods which include types of monitoring instruments, placement and calibration precision of instruments, and appropriate periods for instrumental placement is confirmed. To optimize the monitoring system, sensitivity analysis of displacements and the water table in landslides affected by reservoir surface fluctuation is completed to determine the layout of the monitoring cross sections and the monitoring points. As a case study, the behavior of displacements and the potential fluctuation of the water table in the Shiliushubao landslide, produced by the gradual water impoundment at Three Gorges Reservoir, has been simulated using 3D finite element method analysis. The sensitivity analysis of Shiliushubao landslide is investigated by the fuzzy set evaluation method. As a result, the monitoring network of Shiliushubao landslide is established. |
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| Keywords: | Three Gorges Reservoir Area Impoundment-induced landslide Fuzzy set evaluation method Sensitivity analysis Monitoring network |
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