大巴山峡谷区高陡危岩发育特征与风险评价
Development Characteristics and Risk Assessment of High and Steep Dangerous Rocks in Daba Mountain Gorge Area Canyon Area
李松岩 1李嘉雨 2张可 1陈亮 1罗文豪1
作者信息
- 1. 中铁二院工程集团有限责任公司,成都 610031
- 2. 中铁二院工程集团有限责任公司,成都 610031;四川省艰险山区轨道交通安全风险防控工程研究中心,成都 610031
- 折叠
摘要
基于三维倾斜摄影采用数字地质调绘手段,研究西渝高铁明通隧道出口高陡危岩的发育特征及成因,基于无人机数字地质调绘成果对危岩区进行稳定性分析和落石运动轨迹数值模拟,分析危岩体崩落后的弹跳高度、运动速度、运动动能、运动距离.结果表明:WY01/02/04危岩带落石滚落到隧道洞口和#0桥台上的概率大,建议接长隧道明洞,设置桥墩防撞装置.
Abstract
Based on 3D oblique photography and digital geological mapping method,the development characteristics and causes of high and steep dangerous rock at the exit of Mingtong tunnel of Xi'an—Chongqing High-speed Railway are studied.Based on the results of UAV digital geological mapping,stability analysis and numerical simulation of rockfall movement trajectory are carried out in the dangerous rock area,and the bounce height,movement speed,kinetic energy and movement distance of the dangerous rock mass after collapse are analyzed.The results show that the probability of rockfall in WY01/02/04 dangerous rock belt falling onto the tunnel entrance and #0 abutment is high.It is suggested to extend the open cut tunnel and set the bridge pier anti-collision device.
关键词
高山峡谷/岩溶发育/危岩落石/倾斜摄影/非接触式勘察/地质调绘/轨迹研究/防灾减灾Key words
high mountain canyon/karst development/dangerous rockfall/oblique photography/non-contact survey/geological mapping/trajectory research/disaster prevention and reduction引用本文复制引用
基金项目
中国中铁股份有限责任公司科技研究开发计划(2022-重大-01)
中国中铁股份有限责任公司科技研究开发计划(2021-重点-02)
中铁二院科技开发计划(KSNQ232009)
出版年
2024
国家科技期刊平台
NSTL
万方数据