老城区复杂管网环境下基坑桩间漏水险情分析与处理

Emergency Analysis and Treatments of Foundation Pit Leakage in the Circumstance of Complex Pipe Networks in Old City

老城区中管网通常复杂密布,基坑施工的不确定因素大大增加,事故预防困难,因此有效的事故处理措施以及抢险措施尤为重要。以地铁某匝道为例,详细介绍了该基坑漏水事故的险情分析、应急措施和恢复施工方案。同时,工程监测表明险情处理及时有效。最后,总结了复杂管网环境下基坑漏水的建议。

In the old city, pipe networks are usually complex, which greatly increase the uncertainty of foundation pit engineering and the difficulty of accident prevention. Thus, effective accident treatments and emergency measures are particularly important. A ramp in metro was illustrated in this paper to introduce the risk analysis, the emergency measures and the scheme of construction restoration of the leaking accident in foundation pit in detail. Moreover, measures were proved to be effective by the engineering monitoring. At the end of the paper, suggestions were summarized when foundation pit leaked in the circumstance of complex pipe networks, to provide reference for similar projects.