露天煤矿闭坑边坡稳定性分析及防治措施

Stability analysis and prevention measures of closed pit slope in open-pit coal mine

保证露天煤矿闭坑高陡边坡稳定性是矿山企业转型、矿山复垦、生态恢复的前提条件。在分析影响露天矿闭坑边坡稳定性的因素的基础上,计算了典型剖面疏干、饱水2种状态下的安全系数,预判了闭坑边坡的稳定性。结合矿山地质公园建设需求,提出采用现浇网格生态护坡技术治理边坡出露泥岩层,并布设实时自动化的GPS监测系统对边坡稳定性进行监测预警。

To guarantee the stability of high and steep slope of open-pit coal mine is the precondition of mine enterprise transformation,mine reclamation and ecological restoration.Based on the analysis of factors affecting the stability of closed pit slope in open-pit mine,this article calculates the safety factors under the conditions of dewatering and water saturation in typical profile,and predictes the stability of the slope.According to the demand of mine geological park construction,the article presents the technology of cast-in-place grid ecological slope protection to control the exposed mudstone layer of the slope,and sets up a real-time automated GPS monitoring system to monitor and warn the stability of the slope.