运营岩溶隧道结构水压长期监控及其特征分析  

Long-term Monitoring and Analysis of the Water Pressure for the Karst Tunnel Structure in Operation

作　　者：张玉[1] 李小青[1] 申志军 

机构地区：[1]华中科技大学,武汉市430074 [2]蒙西华中铁路股份有限公司,北京市100000

出　　处：《公路》2015年第12期262-266,共5页Highway

摘　　要：对于岩溶隧道，水压力是衬砌结构的主要荷载之一。在岩溶隧道的运营过程电，水压力受隧道的排水系统、岩溶、地表水等因素的影响而不断地变化着。对运营岩溶隧道结构的水压力进行长期监控和分析，可以了解岩溶隧道结构的受力特征及隧道防排水措施的作用，为岩溶隧道的后期维修养护和水治理提供相应参考依据。以宜万铁路大支坪隧道为研究对象，对其运营过程中水压力进行了长期的监控和分析，监控结果说明，施工过程中的防排水措施起到了相应的作用。隧道结构水压力在2～35kPa范围内变化，其数值基本稳定，对隧道结构的受力特征影响较小，同时为该岩溶隧道的后期维护提供了有益的参考。For the karst tunnel, water pressure is one of the main loads of lining structure. Water pressure is influenced by factors of draining system, karst and ground water etc and constantly changes during their service life after being put into function. Long-term monitoring and analYsis of the water pressure for the karst tunnel structure can,understand the stress characteristics of the structure, and the role of tunnel waterproof and drainage： measures, which can provide corresponding reference for the later maintenance and water treatment of karst tunnel. Long-term monitoring and analysis of the water pressure have been conducted in Dazhiping Tunnel on the Yichang-Wanzhou Railway, and the result shows that waterproof and drainage measures play a corresponding role in the construction process. Water pressure on tunnel structure ranges from 2kPa ,to 35kPa., and maintains stability and has less effect on the stress characteristics of tunnel structure, which in the meantime can provide reference for the later maintenance in later stage.

关 键 词：岩溶隧道 运营 水压力 长期监控 分析 

分 类 号：U451.4[建筑科学—桥梁与隧道工程]