综合减震控制技术在隧道下穿高危建筑物过程中的应用

Application of comprehensive shock absorption and control technology in development of tunnel under high-risk building

以轨道交通六号线一期工程小什字车站及区间隧道工程为例,介绍了在Ⅲ级围岩、上方为高危建筑、无临空面作业的复杂条件下,综合采用水钻技术施工双排周边孔、大直径机械掏槽形成大空孔减震、静态爆破技术及控制爆破技术减震等措施,减小对上方建筑物的影响,顺利通过了该高危建筑所在的特殊地段。

Taking for example the Xiaoshizi station and running tunnel project for Chongqing rail transit No.6 line phase 1 project,under the complex conditions of grade 3 surrounding rock, high-risk buildings above and operation without free face, some comprehensive shock absorption measures were adopted to reduce the effect on buildings above,including construction of double-row peripheral holes with water drilling technology, forming big empty holes by channeling with large- diameter machinery, static blasting technology and control blasting technology etc..