高陡边坡铁路隧道洞口危岩落石整治措施研究  

Study on Treatment Measures for Rockfall at Railway Tunnel Portal on High and Steep Slope

作　　者：黄华[1] 姜波[1] 罗永刚 周跃峰[1] HUANG Hua;JIANG Bo;LUO Yonggang;ZHOU Yuefeng(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《高速铁路技术》2018年第6期65-69,共5页High Speed Railway Technology

摘　　要：文章以西南山区某高速铁路隧道洞口为工程背景,研究铁路隧道洞口高陡边坡危岩落石整治措施,首先通过现场调查和地质分析得到了危岩落石分布特征、形成原因以及稳定性;然后采用ROCKFALL软件选取坡面最不利断面研究危岩落石轨迹,得到了落石沿程冲击动能和弹跳高度包络图以及落石影响范围,为制定危岩落石防治措施提供依据;最后提出了"分区治理、分级防护、主动拦截、被动支挡"的综合处理措施,有效减小洞口危岩落石风险,可为类似工程提供参考。based on the engineering background of a high-speed railway tunnel portal in southwest mountainous area,in the paper,the treatment measures are studied for rockfall at railway tunnel portal on high-steep slope.Firstly,the distribution characteristics,formation reasons and stability of rockfall are obtained through field investigation and geological analysis.Then,the most disadvantageous section of the slope surface is selected by ROCKFALL software to study the falling path of dangerous rocks and obtain the impact kinetic energy,the envelope diagram of bouncing height and the influence scope of rockfall along the course of rockfall,which provides the basis for the prevention and control of rockfall.Finally the comprehensive treatment measures of"zoning control,grading protection,active interception and positive retaining"are put forward,which can effectively reduce the risk of rockfall at tunnel portal and provide a reference for similar projects.

关 键 词：隧道洞口 高陡边坡 危岩落石 处理措施 

分 类 号：U453.1[建筑科学—桥梁与隧道工程]