Abstract:

Stability reinforcement layout of southern high slope of Haizhou opencast mine was studied. Overall principles selecting stability reinforcement methods of high slope were established. Suitable calculation method was built, related calculation geotechnical parameters were given. Reasonable safety factor indexes were analyzed and confirmed. In consideration of situation of opencast pit in site, it designed the optimal slope cutting scheme, analyzed its stability, and pointed out necessity of second reinforcement. Aiming at safety factor and cost along with reinforcement measures of anchor rope, slide-resistant pile and foot consolidation, it make use of orthogonal design method to design and calculate the reinforcement optimization scheme so as to make the most optimal scheme. The research results can guide engineering design and construction in site.

Key words: Opencast mine, High slope, Reinforcement scheme, Optimization, Safety factor, Cutting slope, Slope foot consolidation