河南某钼矿露天边坡分区稳定性评价及协同监测分析

Stability Evaluation and Cooperative Monitoring Analysis of Open-pit Slope in Henan Province

大型露天矿高陡岩质边坡安全性问题日益突出,开展边坡分区稳定性评价及协同监测分析具有重要意义。以河南某钼矿为研究对象,开展详细的工程地质调查并进行边坡分区,依据边坡稳定性分析结果,开展潜在风险区的在线实时监测,研究持续降雨作用下边坡变形规律。结果表明,该矿西帮中部A2区在自重、地下水和爆破振动影响下安全系数为0.971,具有潜在滑坡风险;降雨为影响边坡安全的主要不利因素,连续性降雨引发浅层边坡变形是边坡失稳的主要诱因。

The safety problem of high steep rock slope in large open-pit mine is becoming more and more prominent,so it is of important significance to carry out regional stability evaluation and collaborative monitoring analysis of slope.Taking a molybdenum mine in Henan province as the research object,a de-tailed engineering geological survey and slope zoning are carried out.According to the results of slope stabili-ty analysis,online real-time monitoring of potential risk areas is carried out to study the slope deformation rule under the action of continuous rainfall.The results show that the safety factor of A2 area under the influ-ence of dead-weight,groundwater and blasting vibration is 0.971,which has potential landslide risk.Rain-fall is the main adverse factor affecting slope safety,and the shallow slope deformation caused by continuous rainfall is the main cause of slope instability.