摘要
某轨道交通线穿过砂层进入隧道开挖范围的面积大,且穿越的长度长,常规的加固方法对于其加固效果很难保证,因此采用冻结法加固,对粗砂层进行冻结加固后,在冻结帷幕的围护作用下,进行穿越段的开挖施工。为更好地控制隧道施工安全风险,掌握施工灾害的可能情况,提供合理的施工措施,制定科学的施工工序,开展针对性的安全评价研究,以保证轨道交通线的顺利进行。
Because of the large excavation area of a rail transit line through the sand into and its length of the traversal, conventional reinforcementmethod for its reinforcement effect is difficult to guarantee. So by freezing method of reinforcement, the grit layer after freezing reinforcement,under the effect of freezing curtain, excavation of the crossing section is carried out. In order to better control the safety risk of the tunnelconstruction, grasp the possible situation of construction disasters, provide reasonable construction measures, formulate scientific constructionprocedures and carry out targeted safety assessment studies so as to ensure the smooth progress of the rail transit lines.
出处
《山西建筑》
2018年第5期165-166,共2页
Shanxi Architecture
关键词
隧道砂层
冻结法
冻结帷幕
sand tunnel
freezing method
freezing curtain
