辛店隧道临近既有线施工方案优化与安全技术控制

Scheme Optimization and Safety Technical Control of Xindian Tunnel Close to Existing Lines

结合工程实例,介绍在新建隧道洞内采取短进尺、弱爆破、强支护、勤量测、紧衬砌的工程措施,减少施工对既有隧道影响、确保既有线运营安全和新建隧道施工顺利进行。

Based on an engineering example,construction technical measures in a newly-built tunnel are introduced in this paper,including the adoption of short footages,weak blasting,strong supports,frequent measurements,and tight linings,which can reduce construction＇s influence on existing tunnels,and ensure the safe operation of existing lines,as well as the smooth construction of the new tunnel.