连拱隧道围岩应力二次分配影响的控制

Control of continuous tunnel around rock stress secondary allocation effect

根据云南省富广高速公路银厂双跨连拱隧道的工程实际和施工过程中主要的施工措施,对隧道围岩应力二次分配影响的控制及产生的原因进行了分析,并提出了相应解决的措施,从而防止二次初砌混凝土的开裂。

According to the actual project of Yunnan Fuguang Highway silver plant double-span continuous tunnel and the main constructing measures during the construction process, analyzes the control of tunnel around rock stress secondary allocation effect ＆s well as its reasons, and brings forward rdative solving measures, in order to avoid the cracks of secondary concrete.