摘要
将落石灾害防治研究引入到露天矿高陡边坡,结合河南省洛钼集团矿山公司某边坡落石问题进行模拟研究:首先采用动力学方法分析了落石运动轨迹的影响因素和运动方程,指明了落石防护设计的依据;然后采用数值模拟方法选取50块落石进行随机测试,重点考察落石的落点分布范围、弹跳高度和总动能等要素,以此为基础并结合边坡实际条件,设计了三道防护墙拦截落石的方案;最后确定了各道防护墙的位置、高度以及最小抗冲击强度。研究结果表明,该方案对落石的拦截率达到100%,对露天矿高陡边坡落石灾害的有效防治具有重要意义。
Taking the protection of rockfall hazards in high steep slope into the open-pit mine, this paper made a study by the numerical simulation method based on Mining Company of Molybdenum CO. ,Ltd in Henan Province. Firstly the influencing factors and kinematical equations of rockfall-trajectory were analyzed and the principle for protection designing investigated. Then a test was carried out optionally with 50 rockfalls through numerical simulation for the purpose of analyzing such factors as the distribution of rockfall end-points, the bounce height and the total kinetic energy. According to these basic analyses, three protection-proofs were suggested to be designed and the location, height and strength of each protectionproof was selected. The numerical imitation results showed that almost 100 percent of rockfall could be intercepted. This study can provide scientific guidance for the effective protection of rockfall hazards in high steep slope in the open-pit mine.
出处
《安全与环境工程》
CAS
2009年第2期86-89,共4页
Safety and Environmental Engineering
基金
国家"十一五"科技支撑计划项目(2006BAB02A02)资助
关键词
露天矿
落石
轨迹
数值模拟
防护墙
open-pit mine
rockfall hazard in high steep slope
trajectory
numerical simulation
protection-proof
