热力隧道下穿“东水西调”工程关键技术研究  

Key Technology Research of Thermal Tunnel Underpass the “East-West Water Transfer” Project

作　　者：沈立伟 刘仰鹏 董淑棉 

机构地区：[1]北京市热力工程设计有限责任公司

出　　处：《区域供热》2021年第2期142-150,共9页District Heating

摘　　要：本文结合北京市阜石路西延热力暗挖隧道穿越"东水西调"工程,对下穿过程中扰动控制的关键技术措施开展研究。首先,通过数值模拟分析的方法对隧道开挖的超前加固进行分析,比选了不同厚度的注浆帷幕对管线的影响,结果表明,在本工程中当其范围在2.0m左右时,对既有输水管线的保护既安全又经济;然后,在此基础上对本工程高风险的区域进行风险评价;其次,依据数值分析的结果,提出热力暗挖隧道穿越输水管道施工中的关键技术;最后,结合现场管线的监测结果,总结相关关键措施的技术要点,所得结论可为今后类似穿越既有大型输水管线的工程提供一定参考。Combined with the Fushi Road West Extension Thermal Tunnel Project in Beijing through the "East-West Water Transfer" project, the key technical measures for disturbance control during the underpass were studied. Firstly, we analyze the overstrengthening of tunnel excavation by numerical simulation analysis, and compare the impact of different thickness of slurry curtain on the pipeline, the results show that when the range is around 2. 0 m, it is safe and economical to protect the existing water pipeline;then, based on this, we simulate the excavation in the high-risk area of the project, and evaluate the risk. propose key technologies in the construction of thermal cut-and-cover tunnels through transmission pipelines;finally, combined with the monitoring results of the field pipeline, summarize the technical points of relevant key measures, and the conclusions obtained can provide some reference for similar projects crossing existing large transmission pipelines in the future.

关 键 词：热力 隧道 下穿 注浆 监测 

分 类 号：TU995[建筑科学—供热、供燃气、通风及空调工程]