【作者】 马福； 沈兴东； 张丽； 莫宋明； 邓军；

【Author】 Ma Fu~1,Shen Xingdong~1,Zhang Li~2,Mo Songming~1,Deng Jun~1 (1.The Third Construction Co.,Ltd.of China Construction Eighth Engineering Division,Nanjing,Jiangsu 210046,China; 2.Daqing Petrochemical Construction Co.,Ltd.,Daqing,Heilongjiang 163714,China)

【机构】 中建八局第三建设有限公司； 大庆石化建设公司；

【摘要】 重庆市轨道交通1号线小什字车站及区间隧道工程断面变化频繁,部分隧道埋深浅,且存在1条与拟建地铁区间隧道走向基本一致的既有人防隧道。针对现场实际情况,分别采用短进尺、弱爆破、分层剥离车站全断面开挖方法、环形减振孔爆破开挖方法、静态破碎开挖方法,最终确保了隧道洞身开挖施工的安全和周围地上建筑物的安全,并取得较好效果。更多还原

【Abstract】 The tunnel section of Xiaoshenzi station and tunnel of Chongqing subway line 1 change frequently.The buried depth of part of the tunnel is shallow.Moreover,there is a existing air defense tunnel paralleled to the subway tunnel.Based on the situation,the full section excavation method of a short-drilling footage,dim blasting and layered split station,construction method with annular damping hole and static breaking excavation method are used in the tunnel construction.Ultimately,safety of the tunnel excavation and its surrounding buildings are ensured.The result shows that these construction technologies have a good effect on the tunnel excavation.更多还原