四川茂县叠溪镇新磨村滑坡特征与成因机制初步研究

doi:10.13722/j.cnki.jrme.2017.0855

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Abstract A large scale bedding landslide occurred in Xinmo village，Diexi town，Maoxian county，Sichuan at about 6∶00 pm on June 24，2017. The rock mass with the volume of 450×104 m3 destroyed the whole Xinmo village，resulted in the death of 10 people and missing of 73 people. This paper presents a comprehensive analysis on the dynamic process and failure mechanism of the landslide based on the site investigation，satellite remote-sensing(RS)，Unmanned Aerial Vehicle(UAV) photography，Ground Based Synthetic Aperture Radar (GBSAR) monitoring and other technologies. The preliminary study suggested that the rock masses of the source area were shattered and tension cracks were formed due to the shaking of the Diexi Earthquake in 1993. The shattered rock masses suffered from the subsequent strong earthquakes(such as 1976 Pingwu Earthquake and 2008 Wenchuan earthquake) and long-term effects of gravity and rainfall，which eventually resulted in the failure of the rock masses. The movement of the landslide lasted for 2 minutes in which the main landslide lasted for only 60 seconds with the runout of 2.6 km and the maximum speed of 74.6 m/s，a typical high speed and long runout landslide-debris flow. Because of the characteristics of high position and high concealment，this kind landslide is difficult to be detected with the traditional investigation methods. It is suggested that the high accuracy Earth Observation Technology(such as InSAR，LiDAR，UAV) should be promoted and applied to detect and prevent such high concealed landslides at high position in southwestern mountain areas.

Key words： slope engineering Xinmocun landslide high position landslide concealment earth observation technique potential geohazard early detection

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	Articles by authors
	XU Qiang
	LI Weile
	DONG Xiujun
	XIAO Xianxuan
	FAN Xuanmei
	PEI Xiangjun

Cite this article:

XU Qiang,LI Weile,DONG Xiujun, et al. The Xinmocun landslide on June 24，2017 in Maoxian，Sichuan：characteristics and failure mechanism[J]. , 2017, 36(11): 2612-2628.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.0855 OR http://www.rockmech.org/EN/Y2017/V36/I11/2612

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