Numerical Simulation on the Complex Seepage Field of Underground Caverns of WendengPumped Storage Power Station

LIU Chang-jun; WANG Xiao-wei; XU Jia-cun; TANG Bo

doi:10.3969/j.issn.1001-5485.2013.04.016

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Journal of Changjiang River Scientific Research Institute ›› 2013, Vol. 30 ›› Issue (4) : 73-78. DOI: 10.3969/j.issn.1001-5485.2013.04.016

Rock-Soil Engineering

Numerical Simulation on the Complex Seepage Field of Underground Caverns of WendengPumped Storage Power Station

LIU Chang-jun¹,WANG Xiao-wei², XU Jia-cun³,TANG Bo³

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Abstract

Wendeng pumped-storage power station is composed of water intake system, underground powerhouse system, tailrace system and the upper and lower reservoir. The underground chambers, seepage control system of the upper and lower dam, and the adits and densely distributed drainage holes above the penstock construct the complex impervious system of the station. GWSS(Groundwater Simulation System) software was adopted in the numerical simulation analysis on the complex seepage field of the project. Characteristics of the complex seepage field, the external water pressure of conduit pipe and the impervious effect of the upper dam during normal operation were investigated. The result shows that the pressure on the conduit pipe and branch pipe can be reduced obviously and hence the seepage control effect meets the requirement by setting plughole and drainage curtain at the top of the horizontal segment of the high-pressure tunnel.

Key words

3-D seepage field / underground tunnel / method of modified cut-off negative pressure / method of drainage substructure / FEM

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LIU Chang-jun,WANG Xiao-wei, XU Jia-cun,TANG Bo. Numerical Simulation on the Complex Seepage Field of Underground Caverns of WendengPumped Storage Power Station[J]. Journal of Changjiang River Scientific Research Institute. 2013, 30(4): 73-78 https://doi.org/10.3969/j.issn.1001-5485.2013.04.016

References

［1］孙玉涛. 天荒坪电站高压隧洞的灌浆施工［J］. 水力发电, 1998, (8): 58- 60.(SUN Yu-tao. Grouting Construction for the High-Pressure Tunnels of Tianhuangping Hydropower Station［J］. Water Power, 1998, (8): 58-60.(in Chinese))
［2］张有天. 中国水工地下结构建设50年(中) ［J］. 西北水电, 2001,(1):18-26.(ZHANG You-tian. Five Decades of Underground Hydraulic Construction in China (Part Ⅱ). Northwest Water Power, 2001, (1): 18-26.(in Chinese))
［3］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): 302-306.(XIAO Ming, FU Zhi-hao, YE Chao. Numerical Analysis of Influncence of Seepage from Underground Conduit Lining under High Internal Water Pressure on Slope Stability［J］. Rock and Soil Mechanics, 2007, 28(2): 302-306.(in Chinese))
［4］盛金昌, 速宝玉, 赵坚. 高水头作用下水工压力隧洞的水劈裂分析［J］. 岩石力学与工程学报, 2005, (7): 1226-1230.(SHENG Jin-chang, SU Bao-yu, ZHAO Jian. Analysis of Hydraulic Fracturing in Hydraulic Tunnels under High Water Pressure［J］. Chinese Journal of Rock Mechanics and Engineering, 2005, (7):1226-1230.(in Chinese))
［5］张有天. 水工隧洞建设的经验和教训(上) ［J］. 贵州水力发电, 2001, 15(4): 75-84.(ZHANG You-tian. The Experience and Lessons of Hydraulic Tunnel Construction (Part I) ［J］. Guizhou Water Power, 2001, 15(4): 75-84.(in Chinese))
［6］杨林德, 丁文其. 渗水高压引水隧洞衬砌的设计研究［J］. 岩石力学与工程学报, 1997, 16(2): 112-117.(YANG Lin-de, DING Wen-qi. A Study on the Design of Permeable RC Lining in High Pressure Water Carriage Tunnel ［J］. Chinese Journal of Rock Mechanics and Engineering, 1997, 16(2): 112-117.(in Chinese))
［7］崔皓东, 朱岳明,张家发,等. 深埋洞室群围岩渗流场分析及渗控效果初步评价［J］. 长江科学院院报,2009,26(10):71-75.(CUI Hao-dong,ZHU Yue-ming, ZHANG Jia-fa, et al. Analysis on Seepage Field and Preliminary Evaluation on Seepage Control Effect of Rockmass around Deep Caverns ［J］.Journal of Yangtze River Scientific Research Institute, 2009,26(10):71-75.(in Chinese))
［8］王镭,刘中,张有天.有排水孔幕的渗流场分析［J］.水利学报,1992,（4）:15-20.(WANG Lei, LIU Zhong, ZHANG You-tian. Analysis of Seepage Field Near a Drainage-Holes Curtain［J］. Journal of Hydraulic Engineering, 1992, (4): 15-20.(in Chinese))
［9］朱岳明,陈振雷. 改进的排水子结构法求解地下厂房洞室群区的复杂渗流场［J］.水利学报, 1992, (9),79-85.(ZHU Yue-ming, CHEN Zhen-lei. On the Solution of Complicated Seepage Field in Surrounding Rock Mass of Underground Power Station［J］. Journal of Hydraulic Engineering, 1992, (9): 79-85.(in Chinese))
［10］陈建余,有密集排水孔幕的饱和－非饱和渗流场全精细数值模拟分析［J］.中国农村水利水电,2004, （11）:53-60.(CHEN Jian-yu. All-refined Saturated-and-Unsaturated Simulation Analysis of Densely-Distributed Drainage Holes［J］. China Rural Water and Hydropower, 2004, (11): 53-60.(in Chinese))
［11］崔皓东,朱岳明,吴世勇.有自由面渗流分析中密集排水孔幕的数值模拟［J］.岩土工程学报,2008,（3）：440-445.(CUI Hao-dong, ZHU Yue-ming, WU Shi-yong. Numerical Simulation for Densely-Distributed Drainage Holes in Seepage Field with Free Surface［J］. Chinese Journal of Geotechnical Engineering, 2008, (3):440-445.(in Chinese))
［12］赵坚,沈振中.尾矿坝复杂排水系统渗流计算方法的改进［J］.河海大学学报,1997, (3):110-113.(ZHAO Jian, SHEN Zhen-zhong. Improvement of Seepage Computation Method for Complicated Drainage System in Tailings Dams［J］. Journal of Hohai University, 1997, (3):110-113.(in Chinese))
［13］张乾飞,吴中如.有自由面非稳定渗流分析的改进截止负压法［J］.岩土工程学报,2005, 27(1):48-54.(ZHANG Qian-fei, WU Zhong-ru. The Improved Cut-off Negative Pressure Method for Unsteady Seepage Flow with Free Surface［J］. Chinese Jounal of Geotechnical Engineering, 2005, 27(1): 48-54.(in Chinese))
［14］刘昌军,丁留谦,孙东亚,等.溪古水电站左岸三维渗流场有限元分析［J］.长江科学院院报.2009, (增):54-57.(LIU Chang-jun, DING Liu-qian, SUN Dong-ya, et al. 3-D Finite Element Analysis on Seepage Field of Left Abutment of Xigu Hydropower Station［J］. Journal of Yangtze River Scientific Research Institute, 2009, (Sup.):54-57.(in Chinese))
［15］刘昌军,丁留谦,张启义,等.三维渗流有限元分析软件GWSS开发与应用［J］.计算机辅助工程,2012,(4):6-9.(LIU Chang-jun, DING Liu-qian, ZHANG Qi-yi, et al. Development and Application of 3D Seepage Finite Element Analysis Software GWSS［J］. Computer Aided Engineering, 2012,(4):6-9.(in Chinese))