公路隧道外水压力折减规律研究  

Research on Discount Rule of External Water Pressure for Highway Tunnel

作　　者：陈林杰[1] 蒋树屏[2] 丁浩[2] 

机构地区：[1]重庆交通大学应用技术学院,重庆400042 [2]重庆交通科研设计院隧道工程所,重庆400067

出　　处：《重庆交通大学学报（自然科学版）》2008年第3期383-386,404,共5页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家西部交通建设科技项目(200431800028);重庆市科技攻关项目(2005030007)

摘　　要：针对确定隧道外水压力的技术难题,根据相似理论,利用自行设计的模型试验装置,在不同水头高度、渗透系数、排放量以及排放系统的条件下,进行了36组工况试验。根据试验结果,对外水压力的折减规律进行了研究。分析提出了工程类比应注意水头高度为平方的相似关系,以及对于隧道周边富水洞穴应按"复合回填"的方式进行处治的深入认识。In order to solve technical problems of external water pressure for highway tunnel, thirty six tests are made under different conditions including different water head height, permeability coefficient, discharge amount and drainage system with own designed apparatus by similar theory. According to test results , discount rule of external water pressure is analysed. Furthermore, some cognitions are also pointed out, which include that the similar relation of water head height is square relation on engineering analogy and composite backfill method is introduced to deal with abundant water cavities around tunnel.

关 键 词：公路隧道 外水压力 折减系数 复合回填 

分 类 号：U459.2[建筑科学—桥梁与隧道工程]