摘要
结合都汶高速公路董家山隧道小净距段的实际情况,应用数值模拟方法,对小净距段在爆破荷载作用下的相互影响问题进行了研究。结果表明:在隧道爆破施工中,应对迎爆侧进行重点监控,采用合理的开挖和加固方式可有效降低爆破施工对先建隧道的不利影响。研究结论为该隧道小净距段的爆破设计、施工及现场监控量测提供指导,同时,为类似小净距段隧道提供参考。
On the basis of the practical situation of the section with small clear spacing of the Dongjiashan Twin Tunnel on the Du-Wen Expressway, the mutual influence resulted from the blasting construction of the section with small clear spacing of the twin tunnel is studied by means of numerical simulation. The results show that reasonable excavation and reinforcement can effectively reduce disadvantageous influence caused by blasting excavation on the pre-constructed tunnel, and the in-site monitor should be focused on the near blast side. Conclusions can offer helpful reference to blasting control design, blasting excavation and in-site monitor of similar twin tunnel with small spacing.
出处
《公路》
北大核心
2005年第11期212-217,共6页
Highway
基金
西部交通建设科技项目(No.200331878012)
关键词
隧道
小净距
爆破控制
数值模拟
tunnel
small clear spacing
blasting control
numerical simulation
