新疆某山区公路边坡危岩体影响区划分及防治建议  

Division of Dangerous Rock Mass-affected Area of Highway Slope in a Mountainous Area of Xinjiang and Suggestions for Prevention

作　　者：张燕 王庆兵 邢文超 王元新[1] 张君 于桑 张建芝 葛江琨 ZHANG Yan;WANG Qingbing;XING Wenchao;WANG Yuanxin;ZHANG Jun;YU Sang;ZHANG Jianzhi;GE Jiangkun(Shandong Provincial Lunan Geology and Exploration Institute(Shandong Provincial Bureau of Geology and Mineral Resources No.2 Geological Brigade),Jining 272100,China;Shandong Provincial Tetritorial Spatial Ecological Restoration Center,Jinan 250100,China;The First Geological Brigade of the Bureau of Geology and Mineral Ecploration and Development of Xinjiang Uygur Autonomous Region,Changji 831100,China)

机构地区：[1]山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队),山东济宁272100 [2]山东省国土空间生态修复中心,山东济南250100 [3]新疆维吾尔自治区地质矿产勘查开发局第一地质大队,新疆昌吉831100

出　　处：《安全与环境工程》2023年第4期149-158,共10页Safety and Environmental Engineering

基　　金：新疆维吾尔自治区自然资源厅2020年度科研项目(ADZFZ(2020)-06)。

摘　　要：崩塌地质灾害时常威胁着山区公路的运行安全。新疆某山区公路边坡分布有5处危险性较大的危岩体,为查明该山区公路边坡危岩体失稳后的影响区范围,制定合理有效的防治方案,保障人民的生命和财产安全,在详细勘查研究的基础上,利用RockFall软件模拟边坡危岩体失稳后的落石运动轨迹,并在数值模拟的基础上开展野外落石试验用于验证RockFall软件模拟结果的可靠性,通过综合对比边坡危岩体失稳后影响区范围的划分结果,提出相应的防治措施。结果表明:综合RockFall软件模拟和现场落石试验可知,边坡危岩体失稳后落石距离坡脚的最大滚落距离为17.5 m,落石在坡脚处的最大弹跳高度为1.10 m,最大动能为1299.9 kJ;以此为依据将边坡危岩体失稳后的影响区范围划分为重点影响区、次重点影响区和一般影响区;综合研究结果提出了危岩体清理+裂缝注浆+SNS主动防护网+被动防护网+安全警示牌的防治建议。Collapse often threatens the operational safety of mountainous roads.There are five high-risk dangerous rock masses distributed on a highway slope in a mountainous area of Xinjiang.In order to identify the scope of the affected area after the instability of the slope,formulate reasonable and effective prevention and control plans,and ensure the safety of people's lives and property,based on detailed exploration and research,we used RockFall software to simulate the movement trajectory of the unstable slope rock mass,and conducted on-site RockFall tests to verify the reliability of RockFall software simulation results.Further,by comparison of division result of the scope of the affected area after the instability of the dangerous rock masses,contermeasures were proposed.The results are as follows:based on the simulation of RockFall software and on-site rockfall tests,the maximum rolling distance from the foot of the slope after the unstable rock mass is 17.5 m,the maximum bouncing height of the rockfall at the foot of the slope is 1.10 m,and the maximum kinetic energy is 1 299.9 kJ;based on this,the affected area of the unstable slope rock mass is divided into key affected area,sub-key affected area,and general affected area.Prevention and control measures for dangerous rock mass cleaning,crack grouting,SNS active protection network,passive protection network,and safety warning signs are proposed.

关 键 词：山区公路边坡 危岩体 崩塌 RockFall软件 影响区划分 新疆 

分 类 号：X4[环境科学与工程—灾害防治] P642.2[天文地球—工程地质学]