管棚预支护技术的设计参数及其在地铁区间隧道工程中的应用  

Design Parameters of Presupport Technology of Pipe Shed and its Application in Subway Tunnel Engineering

作　　者：孙胜贤 Sun Shengxian(PowerChina Railway Construction Investment Group Co.,Ltd.,Beijing,China)

机构地区：[1]中电建铁路建设投资集团有限公司,北京

出　　处：《科学技术创新》2023年第27期185-188,共4页Scientific and Technological Innovation

摘　　要：本文主要探究了管棚预支护技术在某地铁区间隧道工程中的参数设计和施工方法。在参数设计方面,根据地质勘察结果和工程施工需要,合理设计钢管型号、环向间距、注浆压力、钢管仰角等参数;在施工管理方面,重点加强钻孔、插管、封口、注浆等环节的技术管理。通过应用管棚预支护技术,切实提高了隧道掌子面和两侧围岩的稳定性,为提高隧道开挖的效率与保障施工人员的安全起到了积极作用。This paper mainly discusses the parameter design and construction method of pipe shed presupport technology in a subway tunnel project.In terms of parameter design,according to geological survey results and engineering construction needs,reasonable design of steel pipe type,annular spacing,grouting pressure,steel pipe elevation and other parameters;In the construction management,the emphasis is on strengthening the technical management of drilling,intubation,sealing,grouting and other links.The stability of tunnel face and surrounding rock on both sides is effectively improved by using the presupport technology of pipe shed,which plays a positive role in improving the efficiency of tunnel excavation and ensuring the safety of construction personnel.

关 键 词：管棚预支护 地铁区间隧道 管棚注浆 压力拱 

分 类 号：U455.7[建筑科学—桥梁与隧道工程] TV554[交通运输工程—道路与铁道工程]