露天矿边坡滚石运动特征及控制

Motion Characteristics and Control of Rockfall of Open-pit Slope

边坡滚石是山区基本建设中经常遇到的一种工程灾害,边坡尤其是高陡岩质边坡工程中滚石产生的机理、模拟、分析与防护越来越受到关注。结合会东铅锌矿露天边坡滚石问题,对滚石产生的影响因素,滚石运动轨迹及滚石与坡面的相互作用进行分析。建立了露天矿边坡滚石运动模型,采用随机概率方法对工程实例露天矿边坡滚石轨迹进行预测,并依据滚石落点的空间位置、弹跳高度及其动能分布,提出了防护措施、设计拦截网防护的高度与强度。

Rockfalls are the frequent engineering disasters in capital construction in mountain areas. The mechanism, simulation, analysis and prevention of rockfalls, especially rockfalls in high-steep rock slope engineering, increasely draw people＇s great attention. Taking the rockfalls at Hundong Lead-Zinc Mine as an example, the influence factors and the rockfall movement route are analyzed. The model of slope rockfall is built up, at the same time, the random probabilistic surface-mining. In accordance with the spatial and method is used to predict the route of rockfall induced by kinetic distribution of the rockfalls, the strength and geometric parameters of barriers are designed.