Abstract: In the process of construction in the center city of Yichang, geological hazards caused by expansive soils have been accompanied by the engineering construction, among which the landslide hazards induced by the expansive soil is more prominent. These hazards constitute a certain level of threat to the safety concerns in the urban engineering construction and engineering operation, which might cause significant economic and life losses. This paper presents the Zhangjiawan landslide as an example. On the basis of revealing the material characteristics and combining with the deformation characteristics of landslide bodies, this paper analyzes the stability and proposes the corresponding hazards prevention and comprehensive mitigation measures. This study has contributed in the geo-hazard prevention and mitigation of the urban construction in the center city of Yichang and has provided guidance for the construction planning of Yichang center city and promoting the economic development of the urban area.

Key words: Landslide in Expansive Soils, Deformation Characteristics, Stability, Hazard Prevention and Control Measures