摘要
为控制广西凤山某废弃石灰岩矿山采石边坡的落石风险,并实现美化环境的目标,提出一套落石运动轨迹分析与落石防治的方法和思路。首先,以掌子面阴刻景观为基础,通过现场实测和离散元模拟,分析掌子面边坡内潜在落石的分布范围;然后,采用RocFall落石统计分析软件,对潜在落石的运动轨迹进行模拟;最后,根据风险控制和环境景观的需求,提出落石的防治工程建议。研究结果表明:对于雕刻的掌子面边坡,采用落石平台的拦截可保护坡脚的建筑物和道路;当坡面裸露时,约12%的潜在落石会越过设计落石平台,约6%的潜在落石可到达坡脚建筑物,对坡脚建筑物和人员造成不可接受的风险;通过坡脚平台的植树种草,能够达到美化矿山和吸收落石能量的效果,进而保证坡脚建筑物和人员的安全。
To control the risk of rockfall hazards on the slope of an abandoned limestone mine in Fengshan in Guangxi province,and to beautify the environment as well, this paper puts forward a set of method and thoughts of rockfall trajectory analysis and rockfall prevention. Firstly, based on face intaglio landscape, the paper analyzes the distribution range of the potential rockfalls on the slope of tunnel face by field measure- ment and discrete element numerical simulation; secondly, the paper simulates the potential movement trajectories of rockfalls by using RocFall software;finally,according to the demand of risk control and envi- ronmental landscape, the paper proposes the suggestions for prevention engineering. The results show that for carving tunnel face, using rockfall protection platform can effectively protect constructions and roads at the foot of the slope. However,when slope surface is naked,about 12% of the of them will come across the designed rockfall platform and 6% potential rockfalls will arrive at the constructions at the slope foot, which poses unacceptable risk to the constructions and people there. By planting trees and grass on the rockfall platform,it can not only beautify the mine but also absorb the energy of rockfalls,thereby guaran- teeing the safety of construction and people at the slope foot.
出处
《安全与环境工程》
CAS
2016年第1期117-122,共6页
Safety and Environmental Engineering
