浅埋偏压紧邻次高压燃气管线地铁车站出入口施工技术与风险分析

Construction Technology and Risk Analysis of Subway Station Entrance Adjacent to Subhigh Pressure Gas Pipeline with Shallow Buried Bias

为研究浅埋偏压紧邻次高压燃气管线地铁车站出入口施工技术以及存在的风险,论文结合重庆轨道交通某明挖车站3号出入口工程案例,详细介绍了深基坑近接施工中,地表注浆、条石挡墙预加固等方法的具体应用,从而起到保护既有管线的目的,并通过开挖方式的经济比选等确保安全可控地完成施工任务。

In order to study the construction technology and risks of subway station entrance and exit close to sub-high pressure gas pipeline with shallow buried bias pressure,combined with the case of NO.3 entrance and exit project of an open-cut station in Chongqing rail transit,this paper introduces in detail the specific application of surface grouting and rock retaining wall pre-reinforcement in deep foundation pit close construction,so as to protect the existing pipeline,and ensure the safe and controllable completion of the construction task through economic comparison of excavation methods.