Taking a collapse disaster in Huangge Town,Nansha District,Guangzhou City as the research object,this paper analyzes the current situation,spatial form,scale and type,joint fissure characteristics of the collapse through field investigation,and further analyzes the stability of the collapse slope from both qualitative and quantitative aspects.In view of the stability of the slope,a joint prevention and control scheme of spray anchor+active protection net is proposed.The research shows that the regional geological structure conditions are complex with Dongguan fault and Baini-Shawan fault;the influence of the unfavorable structural plane of the rock slope on the slope is mainly to cut the slope,the joint fissures of the slope are developed,and the slope may collapse to the north,west and northwest joint surface or the intersection line of the joint surface,and the slope instability form is dominated by dangerous rock collapse.
rock slopebasic characteristic of collapsestability evaluation
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