摘要
下穿公路隧道的爆破施工过程中,爆破振动会影响路面沉降。以贵阳环城快速铁路二标段杨柳塘隧道为工程实例,对隧道支护情况、爆破参数以及起爆网络进行了分析,采用振动测试仪和全站仪对爆破振动、地表沉降进行监测。通过对监测数据的对比分析,得出爆破荷载对于公路沉降的影响呈现正负相关且沉降量均在0.45mm,在爆破施工后期隧道支护作用会使路面沉降实现反弹,根据所得结论进一步提出控制措施。
The blasting vibration has an effect on the surface settlement during the tunneling blasting construction under the highway. The second section of Yangliutang Tunnel in Guiyang circular high-speed railway was taken as the engi- neering example. The tunnel support, the blasting parameters and the blasting network were analyzed, and the vibration tester and total station were used to monitor the blasting vibration and ground subsidence. Through comparison and analysis on the monitoring data, it concluded that the influence of blasting load and highway settlement was in positive and negative correlation, and the average settlement was 0. 45 mm; the subsequent supporting in the later tunnel blasting construction would reduce the settlement. According to the conclusion, some control measures would be further proposed.
出处
《矿业研究与开发》
CAS
北大核心
2016年第12期104-107,共4页
Mining Research and Development
关键词
隧道
钻爆法
爆破振动
公路沉降
Tunnel, Drilling and blasting method, Blasting vibration, Road subsidence
作者简介
姚忠文（1992-），男，内蒙古呼伦贝尔人，硕士研究生，助理工程师，从事安全技术及工程爆破研究，Email：282166007@qq．com。
通信作者：池恩安（1968-），男，贵州贵阳人，博士，研究员，从事爆破工程及安全技术方面研究，Email：305310565@qq．com。
