新开隧道施工对近接既有人防工程的影响监测  

Monitoring of Tunnel Excavating Effects on Adjacent Existing Civil Air Defense Works

作　　者：周奎[1] 余金鑫[1] 李伟 张鑫 

机构地区：[1]上海理工大学土木工程系,上海200093 [2]上海建工(集团)总公司海外事业部技术中心,上海200032 [3]杭州交通爆破工程有限公司,浙江杭州311202

出　　处：《施工技术（下半月）》2011年第6期52-54,80,共4页Construction Technology

摘　　要：结合萧山北干山永久路新开隧道下穿人防工程监测项目现场实测底板位移和底板围岩压力变化情况,研究近接人防工程在公路隧道钻爆法施工过程中的结构安全。对底板位移数据进行处理和分析,应用线性函数进行回归分析,结果表明:底板位移平稳下降,整个监测过程中没有出现异常位移变化,各监测点的位移历时曲线也基本符合线性函数的变化规律。对底板围岩压力数据进行处理和分析,结果表明:在30d的实测数据中出现了2次较大的压力变化情况,通过分析原因,调整施工方案,避免了上部人防仓库在施工过程中遭受冲击破坏,保证了安全施工。According to the excavating effects of the Yongjiu road tunnel in the Beigan mountain on adjacent under existing civil air defense works,the surrounding rock deformation and pressure changes of roadway floors are monitored.The safety of the adjacent civil air defense works is researched during the highway tunnel construction by drill-blasting method.Data processing and linear regression analysis of the surrounding rock displacement are performed,and the results show that the floor displacement dropped down smoothly and there is no unusual displacement variation during the tunnel construction.The time history curves of the monitoring points are fitted with the linear function.The result of surrounding rock pressure data shows that twice prominent changes appeared in 30 days.The reasons have been analyzed and construction plan has been adjusted to guarantee the successful completion of the tunnel under-crossing the civil air denfense works.

关 键 词：近接人防工程 现场监测 钻爆法施工 围岩位移 围岩压力 

分 类 号：TU942[建筑科学—建筑技术科学]