公路隧道新型防排水分区方法研究  

Investigation on the New Zoning Method for Waterproof and Drainage of Highway Tunnel

作　　者：杨武策 彭兴彬 王亚琼[2] 王志丰[2] YANG Wu-ce;PENG Xing-bin;WANG Ya-qiong;WANG Zhi-feng(Shaanxi Road&Bridge Group Co.Ltd,Xi’an 710075,China;Chang’an University,Xi’an 710064,China)

机构地区：[1]陕西路桥集团有限公司,西安市710075 [2]长安大学,西安市710064

出　　处：《公路》2020年第9期328-333,共6页Highway

摘　　要：为解决隧道防排水系统现阶段存在的排水构件破损、老化不能及时维修或更换的难题,优化隧道防排水系统的设计施工,在传统分区防排水的基础上提出了公路隧道新型防排水分区方法。该方法以涌水量、二衬背后的水压力和围岩级别3个指标作为依据,利用达西定律基本公式推导出分区长度的计算公式,并对计算公式中的变量参数进行了探讨,提出了涌水量、水压力和围岩等级3个指标的控制标准以及分区流程。依托陕西太凤高速白云驿隧道和陕西柞山高速胜利隧道工程,运用新型分区防排水方法的理论计算公式给出了这两座隧道的分区长度建议值。新型防排水分区方法在理论上解决了目前防排水系统所存在的不足之处,研究成果为新型防排水分区方法的实际应用提供了可靠的理论基础。In order to solve the problems of the drainage components of the tunnel drainage system at present stage,such as the damage and aging of the drainage components,which cannot be repaired or replaced in a timely manner,the design and construction of the tunnel drainage system is optimized.A new method of partition drainage for a highway tunnel is proposed on the basis of the traditional partition drainage.The method is based on the three indicators of water gushing,water pressure behind the secondary lining,and the level of surrounding rocks.The basic formula of Darcy’s law is used to derive the formula for calculating the zoning length.In this paper,the variable parameters in the formula are discussed.In the discussion,the control standard of water inflow,water pressure and surrounding rock grade as well as the zoning flow are put forward.Finally,based on the background of the Baiyunyi Tunnel and Shengli Tunnel in Shaanxi Province,the theoretical calculation formula of the new zone method for waterproof and drainage is used to give the recommended partition length of the tunnel.The new waterproof and drainage zoning method theoretically solves the shortcomings of the current waterproof and drainage system.The research results provide a reliable theoretical basis for the practical application of the new water-proof and drainage zoning method.

关 键 词：公路隧道 分区防排水 分区长度 水压力 涌水量 

分 类 号：U453.6[建筑科学—桥梁与隧道工程]