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

作　　者：李松岩 李嘉雨 张可 陈亮[1] 罗文豪 LI Songyan;LI Jiayu;ZHANG Ke;CHEN Liang;LUO Wenhao(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China;Rail Transit Safety Risk Prevention and Control Engineering Research Center in Difficult Mountainous Area in Sichuan Province,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 [2]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

出　　处：《路基工程》2024年第4期34-41,共8页Subgrade Engineering

基　　金：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)。

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。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 rockfallin 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 

分 类 号：U216.41[交通运输工程—道路与铁道工程]