Abstract: Xima Town is the highest altitude and most complex landform in Longli County,and geological disasters occur frequently.In March 2018,after the field investigation by professional and technical personnel,the third and fourth groups of Jinxi Village,Longli,Guizhou were included in the hidden danger points of the collapse.The basic characteristics,formation reasons,and stability of the collapse point are representative in the area.In order to evaluate and control the collapse point,through the investigation and research on the regional geological characteristics of the collapse of the third and fourth groups of Jinxi Village and the basic characteristics of the dangerous rock mass,the cause of the collapse at this point is analyzed,and its stability is evaluated,and appropriate prevention and control are proposed Measures.To provide suggestions for the prevention and control of geological disasters in the area,there is a certain reference value.

Key words: hidden trouble point of collapse,stability evaluation,cause of formation,prevention measures