在受水扰动土体中进行管廊暗挖的加固措施  

Reinforcement measures for underground excavation of pipe gallery in soil disturbed by water

作　　者：刘佳杰 刘志成 杜慧子 Liu Jiajie;Liu Zhicheng;Du Huizi(Beijing Municipal Road and Bridge Group Co.,Ltd.,Beijing 100045)

机构地区：[1]北京市政路桥股份有限公司,北京100045

出　　处：《工程建设》2020年第12期62-67,共6页Engineering Construction

摘　　要：受水扰动的土体稳定性较差,在其中进行暗挖施工时,应采取有效措施对其进行加固。以北京新机场下穿既有道路和电力管道段地下综合管廊工程为例,对复杂工况下土体受水扰动工况进行分析,并对其加固措施进行阐述,可得结论:通过排水清淤、封闭开挖掌子面、沙袋填充已开挖段、地表深孔注浆加固及超前小导管注浆加固等措施可以确保暗挖段土体稳定性,通过调整暗挖结构布局等保证暗挖施工的安全进行。Due to the poor stability of the soil disturbed by water,effective measures should be taken to reinforce the soil during the underground excavation construction. Taking as examplethe project of the comprehensive underground pipe gallery of Beijing new airport passing through the existing road and power pipeline section,the condition of soil disturbed by water under complex working conditions is analyzed and its reinforcement measures are described,which finds that the stability of the soil in the excavation section can be ensured by drainage & dredging,closing excavation face,filling excavation section with sand bag,surface deep hole grouting reinforcement,advanced small pipe grouting reinforcement etc.,and the safety of the excavation construction can be ensured by suchmethod asadjusting the layout of the excavation structure,etc.

关 键 词：土层 水体扰动 综合管廊 暗挖施工 加固措施 复杂工况 

分 类 号：TU990.3[建筑科学—市政工程]