浅埋压力隧洞抗裂设计数值模拟分析

刘阳

doi:10.3969/j.issn.1001-5485.2014.12.016

长江科学院院报 >

2014 , Vol. 31 >Issue 12: 78 - 82

DOI: https://doi.org/10.3969/j.issn.1001-5485.2014.12.016

岩土工程

浅埋压力隧洞抗裂设计数值模拟分析

刘阳

展开

吉林省水利水电勘测设计研究院, 长春 130021

刘阳(1974-), 女,吉林公主岭人,高级工程师,硕士,从事水工地下洞室结构方面设计研究工作,(电话)0431-85622851(电子信箱)sunny-2099@163.com。

收稿日期: 2014-04-02

修回日期: 2014-12-05

网络出版日期: 2014-12-05

收起

Analysis of Anti-crack Design of Shallow Buried Pressurized Tunnel
by Numerical Simulation

LIU Yang

Expand

Water Conservancy and Hydropower Survey Design and Research Institute of Jilin Province,Changchun 130021, China

Received date: 2014-04-02

Revised date: 2014-12-05

Online published: 2014-12-05

Fold

摘要

纵观国内已建大型工程的浅埋压力隧洞,采用抗裂式预应力衬砌形式居多,而对于长距离引水隧洞,如果大范围采用该形式则投资过高。基于裂隙岩体渗流场-应力场耦合理论的有限元方法,对浅埋压力隧洞内水外渗进行数值模拟分析,同时考虑了围岩固结灌浆、地下水位、渗流场变化对围岩的影响,反映了隧洞在开挖、充水、加压过程中围岩应力的变化。验证了孔隙水压力的增减均引起岩体有效应力的减小,岩体呈失稳趋势。围岩覆盖厚度越厚,承担荷载的能力越大。以吉林省中部引松供水工程为例,得出了长距离浅埋引水压力隧洞是否采用抗裂设计,需要结合高压水发生的频率、渗漏量、固结灌浆对提高围岩抗渗性能、岩体渗透压力、有效应力、岩体结构、是否存在排水通道、控制岩体渗漏失稳的状态等因素进行综合分析,确定隧洞衬砌形式。研究结果可为合理确定抗裂设计区段、合理选择隧洞衬砌形式和隧洞埋深提供依据。

关键词： 长距离引水; 吉林省中部引松供水工程; 浅埋压力隧洞; 渗流-应力耦合; 抗裂设计; 数值模拟

本文引用格式

刘阳 . 浅埋压力隧洞抗裂设计数值模拟分析[J]. 长江科学院院报, 2014 , 31(12) : 78 -82 . DOI: 10.3969/j.issn.1001-5485.2014.12.016

Abstract

Anti-crack prestressed lining is mostly used in shallow-buried pressurized tunnels in China. However it is costly when widely used in long-distance water diversion tunnels. In view of this, we simulated the exosmosis of shallow-buried pressurized tunnel by using finite element method according to the coupling of seepage field and stress field of fractured rockmass. In the simulation we considered the impact of consolidated grouting, underground water level, and seepage field variation on the rockmass to reflect the changes of surrounding rock stress during the tunnel excavation, water filling and pressurization. We obtained that the increase and decrease of pore water pressure both could reduce the effective stress of rockmass. Thicker surrounding rock will bring about larger bearing capacity. Whether anti-crack design should be adopted in shallow-buried long-distance pressurized diversion tunnel is dependent on multiple factors. These factors include the frequency of high pressure water, leakage amount, consolidation grouting to improve the impermeability of surrounding rock, seepage pressure of rockmass, effective stress and rock mass structure, as well as drainage channel structure and control of rockmass leakage instability.

Key words： long distance water diversion; water diversion project in central Jilin Province from Songhua River; shallow buried pressurized tunnel; seepage-stress coupling; anti-crack design; numerical simulation

参考文献

[1]张有天,隧洞及压力钢管设计中的外水压力修正系数[J]. 水力发电, 1996,(12):30-34. (ZHANG You-tian. The Correction Coefficient of Outer Lining Water Pressure in the Design of Tunnel and Pressure Steel Pipe[J]. Hydroelectric Power, 1996, (12):30-34. (in Chinese))
[2] 张有天. 水利情[M]. 北京:水利水电出版社,2003:220-245. (ZHANG You-tian. Water Conservancy[M]. Beijing: China Water Power Press, 2003:220-245. (in Chinese))
[3] 侯靖,胡敏云. 水工高压隧洞结构设计中若干问题的讨论[J].水利学报,2001,32(7):36-40. (HOU Jing, HU Min-yun. Some Problems in Design of Hydraulic Pressure Tunnel Structure [J]. Journal of Hydraulic Engineering, 2001, 32(7): 36-40.(in Chinese))
[4] 陈其伟,王西宏,谷兆祺,等. 新型引水式水电站的理论与实践[M]. 北京:水利水电出版社,2008:219-227. (CHEN Qi-wei, WANG Xi-hong, GU Zhao-qi, et al. Theory and Practice of New Water Diversion Power Station [M]. Beijing:China Water Power Press,2008:219-227. (in Chinese))
[5] 张巍, 黄立财. 基于渗流场域应力场耦合的高压隧洞设计[J].水利与建筑工程学报, 2007,5(2):41-44. (ZHANG Wei, HUANG Li-cai. Design of Tunnel with High Pressure Based on Coupling of Seepage Field and Stress Field [J]. Journal of water Resources and Architectural Engineering, 2007, 5(2): 41-44. (in Chinese))
[6] 张有天. 岩石水力学与工程[M]. 北京:水利水电出版社, 2005:93-275.(ZHANG You-tian. Rock Hydraulics and Engineering [M]. Beijing: China Water Power Press,2005: 93- 275. (in Chinese))
[7] 潘家铮. 水工隧洞和调压室[M].北京:水利水电出版社,1990:347-370.(PAN Jia-zheng. Hydraulic Tunnel [M]. Beijing: China Water Power Press, 1990:347-370. (in Chinese))
[8] 杜小凯,任青文,陈伟. 有压引水隧洞内水外渗作用研究[J]. 四川大学学报, 2008,40(5):63-68. (DU Xiao-kai, REN Qing-wen, CHEN Wei. Study on the Effect of Seepage from Underground Hydraulic Tunnel Under High Internal Water Pressure[J]. Journal of Sichuan University 2008, 40(5): 63-68. (in Chinese))
[9] 陈卫中,杨建平,杨家岭,等. 裂隙岩体应力渗流耦合模型在压力隧洞工程中的应用[J].岩石力学与工程学报, 2006,25(12):84-91. (CHEN Wei-zhong, YANG Jian-ping, YANG Jia-ling, et al.Hydro-mechanical Coupled Model of Jointed Rock Mass and Its Application to Pressure Tunnels [J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(12): 84-91. (in Chinese))
[10]李宗利,任文青,王亚红. 考虑渗流场影响深埋圆形隧洞的弹塑性解[J]. 岩石力学与工程学报,2004,23(8):1291-1295. (LI Zong-li, REN Wen-qing, WANG Ya-hong. Elastic-plastic Solution of Deep Circular Tunnel Considering the Seepage Influence [J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(8):1291-1295. (in Chinese))
[11]何翔, 冯夏庭, 张东晓.岩体渗流-应力耦合有限元计算的精细积分方法[J].岩石力学与工程学报,2006, 25(10): 66-68. (HE Xiang, FENG Xia-ting, ZHANG Dong-xiao. Precise Integration Algorithm for FEM Simulation of Coupled Process of Seepage Field and Stress Field in Rock Mass [J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(10):66-68. (in Chinese))
[12]郑少河,朱维申. 裂隙岩体渗流损伤耦合模型的理论分析[J]. 岩石力学与工程学报, 2001,20(2):156-159.(ZHENG Shao-he, ZHU Wei-shen. Theoretical Analysis on a Coupled Seepage-Damage Model of Fractured Rock Mass [J]. Chinese Journal of Rock Mechanics and Engineering, 2001, 20(2): 156-159. (in Chinese))
[13]郑少河,姚海林,葛修润. 裂隙岩体渗流场与损伤场的耦合分析[J]. 岩石力学与工程学报, 2004, 23(9): 1413-1418. (ZHENG Shao-he, YAO Hai-lin, GE Xiu-run. Coupling Analysis of Seepage and Damage in Fractured Rock Mass [J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(9):1413-1418. (in Chinese))
[14]王媛,徐志英,速宝玉. 裂隙岩体渗流与应力耦合分析的四自由度全耦合法[J].水利学报,1998,(7):55-59. (WANG Yuan, XU Zhi-ying, SU Bao-yu. Four-freedom Complete Coupling Method for the Seepage and Stress Coupling Analysis in Fractured Rock Mass[J]. Journal of Hydraulic Engineering, 1998, (7): 55-59. (in Chinese))
[15]毛昶熙. 渗流分析与控制[M].北京:水利水电出版社,1989:97-133. (MAO Chang-xi. Analysis and Control of Seepage [M]. Beijing: China Water Power Press, 1989:97-133. (in Chinese))
[16]王媛. 裂隙岩体渗流及其应力的全耦合分析[D].南京:河海大学,1995. (WANG Yuan. Coupling of Seepage and Stress in Fractured Rock Mass [D]. Nanjing: Hohai University, 1995. (in Chinese))
[17]易立新.裂隙岩体有效应力及其工程意义[J].北京: 中国水利水电科学研究院学报. 2003,1(4):306-311. (YI Li-xin. Effective Stress of Fractured Rock Mass and Its Engineering Significance[J]. Journal of China Institute of Water Resources and Hydropower Research, 2003, 1(4): 306-311. (in Chinese))
[18]TERZAGHI K. Die Berechnung der Durchassigkeitsziffer des Tones aus dem Verlauf der hydrodynamischen Spannungsers cheinungen [J].Sitzungsber. Akda.Wiss. Wien Math Naturwiss, Kl. Abt, 1923, 132(2A): 105-126.
[19]肖明,傅志浩,叶超. 管道衬砌内水外渗对边坡稳定影响的数值模拟[J]. 岩土力学,2007,28(2):302-307. (XIAO Ming, FU Zhi-hao, YE Chao. Numerical Analysis of Influence of Seepage from Underground Conduit Lining under High Internal Water Pressure on Slope Stability[J]. Rock and Soil Mechanics, 2007,28(2): 302-307. (in Chinese))
[20]彭守拙,钟建文. 压力隧洞裂缝混凝土衬砌和围岩的接触条件[J].水利水电科技进展,2010,30(3):53-57. (PENG Shou-zhuo, ZHONG Jian-wen. Contact Conditions of Concrete Lining and Surrounding Rock with Pressure Tunnel Cracks[J]. Advances in Science and Technology of Water Resources, 2010, 30(3): 53-57. (in Chinese))
[21]彭守拙. 压力隧洞透水衬砌裂缝宽度计算方法探讨[J].水利水电科技进展,2009,29(3):46-49. (PENG Shou-zhuo. Method of Calculating the Crack Width of Permeable Lining of Pressurized Tunnel[J]. Advances in Science and Technology of Water Resources,2009,29(3):46-49. (in Chinese))
[22]彭守拙,钟建文,谷兆祺,等.考虑隧洞充水过程的衬砌裂缝宽度计算[J].水利水电科技进展, 2010,30(4):67-71. (PENG Shou-zhuo, ZHONG Jian-wen, GU Zhao-qi. Calculation of Crack Width of Lining Considering Loading Procedure of Pressure Tunnels[J]. Advances in Science and Technology of Water Resources, 2010,30(4):67-71. (in Chinese))
[23]茅泽育,刘阳,邹玉涛,等. 吉林省中部引松供水工程输水系统恒定流及水力过程过渡分析[R]. 北京: 清华大学,2011. (MAO Ze-yu, LIU Yang, ZOU Yu-tao, et al. Constant Flow and Hydraulic Transition Process of the Conveyance System of Water Diversion Project from Songhua River in Middle Jilin Province[R]. Beijing: Tsinghua University, 2011. (in Chinese))
[24]刘阳(女),齐文彪,刘阳(男),等. 吉林省中部引松供水工程无粘结预应力衬砌专题研究报告[R]. 长春:吉林省水利水电勘测设计研究院,2011. (LIU Yang, QI Wen-biao, LIU Yang, et al. Report of Prestressed Lining Water Diversion Project from Songhua River in Middle Jilin Province[R]. Changchun: Water Conservancy and Hydropower Survey Design Institute of Jilin Province, 2011. (in Chinese))
[25]DL/T5195—2004, 水工隧洞设计规范[S].北京:中国电力出版社,2004. (DL/T5195—2004, Specification of Hydraulic Tunnel Design [S]. Beijing: China Electric Power Press, 2004. (in Chinese))
[26]SL279—2002, 水工隧洞设计规范[S].北京:中国水利水电出版社,2002. (SL279—2002, Specification of Hydraulic Tunnel Design [S]. Beijing: China Water Power Press, 2002. (in Chinese))

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献