摘要
断层破碎带除了围岩破碎、稳定性差以外,还常常会赋存大量的地下水,因此隧道穿越断层破碎带施工时经常会面临突泥涌水的危险。东天山隧道位于天山山脉高海拔山区,进口段地表为国家森林保护区,在穿越F1断裂带时突发涌水灾害,详细分析了掌子面涌水情况,包括涌水量、水质和隧道结构变形,结合对F1断裂带区域地表水系分布、地下水类型及地下水系连通等方面的分析,判断出该次隧道施工突发涌水的原因。基于以上分析及地表生态情况,提出涌水段施工期间"集中引排、堵排结合"和运营期间"以堵为主、限量排放"的防排水设计原则,以期打造环境友好型隧道工程。
Because of broken surrounding rocks,poor stability and a large number of contained groundwater,the construction of crossing the fault fracture zone will often face the risk of mud inrush.The East Tianshan tunnel is in the high-altitude area of Tianshan Mountains and the entrance surface is National Forest Reserve.The water gushing disaster suddenly occurred when the tunnel was crossing F1 fault in fracture zone.The water gushing situation was analysed in detail,including the water gushing quantity,water quality and tunnel structure deformation.Combined with the analysis of the distribution of surface water system,the type of groundwater and the connection of underground water system,the cause of water burst was judged.In short,the design principles of"centralized water diversion and drainage,combination of water diversion and drainage"is put forward in this paper during construction period in water inrush section and"water diversion and drainage mainly,limited discharge"during operation period in order to build environment-friendly tunnel project.
作者
黄解放
张志恩
黄明利
陈毅
张城瑞
Huang Jiefang;Zhang Zhien;Huang Mingli;Chen Yi;Zhang Chengrui(CCCC First Highway Engineering Group Co.,Ltd.,Beijing 100024,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;No.6 Engineering Co.,Ltd.of FHEC of CCCC,Tianjin 300450,China;Hami Transportation Construction Co.,Ltd.of CCCC Hrami 839000,China)
出处
《市政技术》
2021年第8期55-59,206,共6页
Journal of Municipal Technology
基金
自治区重大科技专项基金(2018a03003-3)。
关键词
山岭隧道
断层破碎带
突发涌水
机理分析
mountain tunnel
fault fracture zone
water inrush
mechanism analysis
