Analytical study of seepage field of deep-buried central ditch drainage tunnel
LI Lin-yi1, YANG Jun-sheng1, ZHANG Zheng1, MA Yan-na1, ZHANG Cong1, BAO De-yong2
1. School of Civil Engineering, Central South University, Changsha 410075, China;
2. China Railway Siyuan Survey and Design Group Co. Ltd, Wuhan 430063, China
The analytical solution of seepage field and water inflow of tunnel with deep-buried ditch drainage hole in semi-infinite plane was deduced with the method of images and percolation mechanics theory. A numerical model was established by using FLAC3D software based on the engineering example of deep-buried central ditch drainage tunnel. The correctness of the analytical solution was verified from the aspects of tunnel water inflow and lining water pressure. And the influence of the underwater depth of the tunnel and the permeability of the surrounding rock on the water pressure of the lining was further explored. Results showed that deep-buried central ditch was the main drainage path of tunnel drainage system with large discharge and strong effective drainage capacity, and it was also the key to controlling the tunnel bottom water pressure; even if the tunnel was buried deep under water or the surrounding rock permeability was good, the deep-buried central ditch drainage method can effectively reduce the lining water pressure, and control the tunnel bottom water pressure, which can reduce the occurrence of diseases caused by excessive water pressure at the tunnel bottom.
Received: 10 January 2018
Published: 22 November 2018
LI Lin-yi, YANG Jun-sheng, ZHANG Zheng, MA Yan-na, ZHANG Cong, BAO De-yong. Analytical study of seepage field of deep-buried central ditch drainage tunnel. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(11): 2050-2057.
[1] 应宏伟, 朱成伟, 龚晓南. 考虑注浆圈作用水下隧道渗流场解析解[J]. 浙江大学学报:工学版, 2016, 50(6):1018-1023 YING Hong-wei, ZHU Cheng-wei, GONG Xiao-nan. Analytic solution on seepage field of underwater tunnel considering grouting circle[J]. Journal of Zhejiang University:Engineering Science, 2016, 50(6):1018-1023
[2] 杜朝伟, 王梦恕, 谭忠盛. 水下隧道渗流场解析解及其应用[J]. 岩石力学与工程学报, 2010, 27(9):31-34 DU Chao-wei, WANG Meng-shu, TAN Zhong-sheng. Analytic solution for seepage field of subsea tunnel and its application[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 27(9):31-34
[3] 吴金刚, 谭忠盛, 皇甫明. 高水压隧道渗流场分布的复变函数解析解[J]. 铁道工程学报, 2010, 27(9):31-34 WU Jin-gang, TAN Zhong-sheng, HUANG Fu-ming. Analytic solution of complex function to distribution of seepage field of tunnel with high water pressure[J]. Journal of Railway Engineering Society, 2010, 27(9):31-34
[4] 皇甫明, 谭忠盛, 王梦恕, 等. 暗挖海底隧道渗流量的解析解及其应用[J]. 中国工程科学, 2009, 11(7):66-70 HUANG Fu-ming, TAN Zhong-sheng, WANG Meng-shu, et al. Analytical solutions for water in flow into an underwater tunnel and its application[J]. Engineering Sciences, 2009, 11(7):66-70
[5] 王建宇. 再谈隧道衬砌水压力[J]. 现代隧道技术, 2003, 40(3):5-10 WANG Jian-yu. Once more on hydraulic pressure upon lining[J]. Modern Tunnelling Technology, 2003, 40(3):5-10
[6] 王志杰, 何晟亚, 王国栋, 等. 轴对称解析解对马蹄形隧道衬砌水压力及渗透量适用性研究[J]. 武汉大学学报:工学版, 2016, 49(1):54-59 WANG Zhi-jie, HE Cheng-ya, WANG Guo-dong, et al. Study of applicability of an axisymmetric solution for water pressure and seepage flow on lining of horseshoe shaped tunnel[J]. Engineering Journal of Wuhan University, 2016, 49(1):54-59
[7] 王秀英, 王梦恕, 张弥. 计算隧道涌水量及衬砌外水压力的一种简化方法[J]. 北京交通大学学报, 2004, 28(1):8-10 WANG Xiu-ying, WANG Meng-shu, ZHANG Mi. A simple method to calculate tunnel discharge and external water pressure on lining[J]. Journal of Northern Jiaotong University, 2004, 28(1):8-10
[8] 张丙强. 半无限平面双孔平行隧道渗流场解析研究[J]. 铁道学报, 2017(1):125-131 ZHANG Bing-qiang. Analytical solution for seepage field of twin-parallel tunnels in semi-infinite plane[J]. Journal of the China Railway Society, 2017(1):125-131
[9] 蒋进. 高压富水地层山岭隧道衬砌受力机制探讨与结构设计[D].重庆:重庆交通大学, 2012:63-71. JIANG Jin. Mountain tunnel lining stress mechanism and structure design in high pressure and rich water stratum[D]. Chongqing:Chongqing Jiaotong University, 2012:63-71.
[10] 苗晓岐. 九燕山隧道病害原因分析及整治措施建议[J]. 铁道工程学报, 2003, 2:70-72 MIAO Xiao-qi. Analysis on reason of defects in jiuyanshan tunnel and suggestion of measures for their regulation[J]. Journal of Railway Engineering Society, 2003, 2:70-72
[11] 姚希磊. 隧道深埋式中心水沟施工技术研究[J]. 铁道建筑技术, 2017(6):97-99 YAO Xi-lei. Research on the construction technology for deep-buried ditch in tunnel[J]. Railway Construction Technology, 2017(6):97-99
[12] NAM S W, BOBET A. Liner stresses in deep tunnels below the water table[J]. Tunnelling and Underground Space Technology, 2006, 21(6):626-635.
[13] 翟云芳. 渗流力学[M]. 北京:北京石油工业出版社. 2009:25-27.
[14] 郑波, 王建宇, 吴剑. 基于等效渗透系数计算衬砌水压力方法研究[J]. 现代隧道技术, 2011, 48(6):43-46 ZHENG Bo, WANG Jian-yu, WU Jian. On grey theory to predict tunnel deformation[J]. Modern Tunnelling Technology, 2011, 48(6):43-46
[15] 何本国, 张志强, 傅少君, 等. 考虑盲管排水和防水板隔水的隧道支护体系分担水荷载解析解[J]. 岩石力学与工程学报, 2015(增2):3936-3947 HE Ben-guo, ZHANG Zhi-qiang, FU Shao-jun, et al. An analytical solution of water loading on tunnel supporting system with drainage of blind tube and isolation effect of waterproof board[J]. Chinese Journal of Rock Mechanics and Engineering, 2015(Suppl.2):3936-3947
[16] 郑春苗, 贝聂特. 地下水污染物迁移模拟[M]. 北京:高等教育出版社, 2009:191-192.
LUO Hua, CHEN Zu-yu, GONG Guo-fang, ZHAO Yu, JING Liu-jie, WANG Chao. Advance rate of TBM based on field boring data[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(8): 1566-1574.
