监控量测技术在乔庄隧道中的应用.pdfVIP

第 28 卷第 2 期 辽宁工程技术大学学报（自然科学版） 2009 年 4 月 Vol.28 No.2 Journal of Liaoning Technical University （Natural Science ） Apr. 2009 文章编号：1008-0562(2009)02-0237-03 监控量测技术在乔庄隧道中的应用 王海涛，贾金青 （大连理工大学海岸与近海工程国家重点实验室，辽宁 大连 116024） 摘 要：通过对隧道进行监控量测，可预测预报围岩变化，优化设计和指导施工，确保隧道施工安全，使工程投 资经济合理。对济邵高速公路乔庄隧道的拱顶下沉、水平收敛、地表沉降、喷层应力、钢拱架应力等多项涉及围 岩稳定性及支护合理与否的参数进行跟踪量测。量测结果表明：隧道开挖及初期支护 30d 左右，围岩基本上趋于 稳定，应按照规范要求及时施作二次衬砌；隧道洞口的地表基本没有沉降，说明浅埋段采用管棚注浆技术是适宜 的。通过采取有效的监控措施，及时的指导施工和修改设计，成功避免了施工中重大安全事故的发生，确保了隧 道施工安全和质量，对隧道施工具有指导意义。 关键词：公路隧道；新奥法（NATM ）；监控量测 中图分类号：U 456 文献标识码：A Application of monitoring measurement technology in Qiaozhuang tunnel WANG Haitao ，JIA Jinqing (State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China) Abstract ：Through monitoring and measuring tunnels, surrounding rock change predictions and optimal designs can be done and the construction can be carried out under guidance, so that the construction safety can be guaranteed and the engineering investment can be more reasonable. The monitor measuring of NATM was studied in the Qiaozhuang Tunnel in Jishao Express way. Based on some monitoring and measuring job such as subsidence displacement, convergence displacement, submergence of ground, the sprayed coatings stress, the stress of steel bow member, which are related to the stability of surrounding rock and the rationality of support, the optimal time for primary and permanent support are obtained which avert successfully accidents in construction, enhancing the construction qualities, which have guiding significance to the same geologied tunnel construction. Key words ：highway tunnel ；NATM ；monitoring measurement tech