Abstract:In order to determine whether it is necessary to stop mining for treatment after a landslide in an open pit，taking the landslide of ice-water deposit in a large open-pit as an example. According to the geological conditions and monitoring results，the whole process of landslide generation and development is analyzed macroscopically from the aspects of landslide type，cause， characteristics of landslide，slide change rule and disintegration and failure mechanism of sliding body. The results show that the main causes of this kind of landslide are rainfall and groundwater，the type of landslide is creep，the sliding mass has been broken in the process of creeping and sliding，and began to disintegrate when leaving the sliding bed. The possibility of a large instantaneous landslide is very small and the possibility of small-scale collapse is very high. Then the potential impact energy brought by the sliding mass to the victim body is analyzed. It is found that the energy of the sliding mass acting on the victim body is very small，and its hazard is controllable. On this basis，some control measures are put forward，such as adjusting production plan，cutting rainwater and groundwater，proper slope cutting，slope protection，monitoring，etc.，so as to solve the problem that the mine needs to stop production during landslide control.