Email Alerts
RSS
Analysis of seepage field based on improved node virtual flow method in a large-scale canal project during construction period
-
摘要: 利用求解有自由面渗流的改进节点虚流量法，对大型渠道工程施工期渗流场进行三维有限元模拟，得到不同条件下渠道渗流场的水头分布、浸润线、抽水量以及水力坡降。对施工期不同的降排水方案进行分析和评价，并在控制降水井水位的情况下对各方案进行分析，给出各方案下降水井抽水水位与渠底地下水位和单井抽水量的关系。结果表明，改进节点虚流量法能较好地模拟渠道渗流，可较为准确地判定方案是否满足工程实际要求，为实际工程提供理论和技术支撑。Abstract: The finite element analysis of 3D simulation for the large-scale canal project during construction period is performed based on the improved node virtual flow method to solve seepage with free surface, and the water head distribution, saturation line, leakage with hydraulic slope are obtained. The emphasis is placed on the study of different precipitation schemes during construction period and the relationship between the quantity of the dewatering well, the underground water level of the canal and the seepage discharge controlling the water level of the dewatering well. The study indicates that the method can simulate the seepage field of canal project well and accurately determine whether the program meets the requirements of the project, and it can give a theoretical and technological support for similar practical engineering.
-
图 2 三维有限元计算网格及降水井细部网格
Figure 2. 3D FEM calculating meshes and detailed meshes of dewatering well
图 5 各方案最大水力坡降计算结果对比
Figure 5. Comparison of maximum hydraulic slope calculation results of cases
图 6 降水井抽水水位-单井最大抽水量关系
Figure 6. Relationship between water level and maximum seepage flow in a dewatering well
图 7 降水井抽水水位-渠底最高地下水位埋深关系
Figure 7. Relationship between water level in a dewatering well and maximum buried depth of groundwater level in canal bottom
表 1 计算方案
Table 1. Calculation cases
方案 是否汛期 潜水位/m 纵向井间距/m 降水井布置 P1 非汛期 1.75 60 双排井点 P2 非汛期 1.75 25 双排井点 P3 非汛期 1.75 25 单排井点 P4 汛期 2.75 25 双排井点 P5 汛期 2.75 25 单排井点 
下载: 导出CSV
-
[1] 祁书文. 基于有限元法的复杂三维渗流场计算方法研究[D]. 南京: 河海大学, 2007. QI Shuwen. Research on calculation method of seepage discharge for complicated 3D seepage flow field based on FEM[D]. Nanjing: Hohai University, 2007. (in Chinese) [2] RASTOGI A K, PRASAD B. FEM modelling to investigate seepage losses from the lined Nadiad branch canal, India[J]. Journal of Hydrology, 1992, 138(1-2): 153-168. doi: 10.1016/0022-1694(92)90162-O [3] KANG T. Comparison of seepage analysis methods based on finite elements[C]//Computer Methods and Recent Advances in Geomechanics-Proceedings of the 14th int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014, 2015: 1421-1426. [4] GOYAL R, CHAWLA A S. Seepage from canals with infiltration from free zone surface[J]. Journal of Irrigation and Drainage Engineering, 1997, 123(4): 257-263. doi: 10.1061/(ASCE)0733-9437(1997)123:4(257) [5] WANG Hui, GAO Yating, QIN Qinghua, et al. Green's function based finite element formulations for isotropic seepage analysis with free surface[J]. Latin American Journal of Solids and Structures, 2015, 12(10): 1991-2005. doi: 10.1590/1679-78251726 [6] 李明川, 姚军, 葛家理.渗流力学进展与前沿[J].力学季刊, 2012, 33(1): 74-80. http://industry.wanfangdata.com.cn/jt/Detail/Periodical?id=Periodical_hggl201426049 LI Mingchuan, YAO Jun, GE Jiali. Research progress and development on seepage mechanics[J]. Chinese Quarterly of Mechanics, 2012, 33(1): 74-80. (in Chinese) http://industry.wanfangdata.com.cn/jt/Detail/Periodical?id=Periodical_hggl201426049 [7] 李斌, 凌霄, 宋志宇.南水北调中线一期穿黄工程南岸渠道高边坡渗流分析[J].长江科学院院报, 2009, 26(10): 82-86, 91. doi: 10.3969/j.issn.1001-5485.2009.10.019 LI Bin, LING Xiao, SONG Zhiyu. Seepage analysis on high slope of Yellow River tunnel project in first-stage of Middle Route South-to-North Water Transfer Project[J]. Journal of Yangtze River Scientific Research Institute, 2009, 26(10): 82-86, 91. (in Chinese) doi: 10.3969/j.issn.1001-5485.2009.10.019 [8] 崔皓东, 张家发, 张伟, 等.南水北调中线典型承压水地层渠段渗流场数值分析[J].岩土力学, 2010, 31(增刊2): 447-451. http://www.oalib.com/paper/5013329 CUI Haodong, ZHANG Jiafa, ZHANG Wei, et al. Numerical analysis of seepage field for typical canal stretch on confined aquifer of Middle Route Project of South-to-North Water Transfer[J]. Rock and Soil Mechanics, 2010, 31(Suppl2): 447-451. (in Chinese) http://www.oalib.com/paper/5013329 [9] 王金龙, 张家发, 崔皓东, 等.南水北调中线典型渠段施工期降水措施研究[J].郑州大学学报(工学版), 2012, 33(5): 82-86. http://www.cnki.com.cn/Article/CJFDTotal-RIVE201406022.htm WANG Jinlong, ZHANG Jiafa, CUI Haodong, al et. Dewatering measures for construction period of the typical canal stretch of Middle Route Project of SNWT[J]. Journal of Zhengzhou University(Engineering Science), 2012, 33(5): 82-86. (in Chinese) http://www.cnki.com.cn/Article/CJFDTotal-RIVE201406022.htm [10] 崔皓东, 朱岳明.有自由面渗流分析的改进节点虚流量全域迭代法[J].武汉理工大学学报(交通科学与工程版), 2009, 33(2): 238-241. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGYJ201008001008.htm CUI Haodong, ZHU Yueming. Improved procedure of nodal virtual flux of global iteration to solve seepage free surface[J]. Journal of Wuhan University of Technology(Transportation Science & Engineering), 2009, 33(2): 238-241. (in Chinese) http://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGYJ201008001008.htm [11] 朱岳明. Darcy渗流量计算的等效结点流量法[J].河海大学学报, 1997, 25(4): 105-108. http://d.wanfangdata.com.cn/Thesis/Y1128403 ZHU Yueming. Darcy seepage discharge calculation with node method[J]. Journal of Hohai University, 1997, 25(4): 105-108. (in Chinese) http://d.wanfangdata.com.cn/Thesis/Y1128403 [12] 王新敏. ANSYS工程结构数值分析[S]. 北京: 人民交通出版社, 2007. WANG Xinmin. Numerical analysis of engineering structure with ANSYS[S]. Beijing: China Communication Press, 2007. (in Chinese) [13] 钟登华, 张晓昕, 敖雪菲, 等.复杂渠道工程三维渗流应力耦合分析与研究[J].中国科学(技术科学), 2013, 43(11): 1993-1201. http://www.cqvip.com/qk/98492a/2013011/47900195.html ZHONG Denghua, ZHANG Xiaoxin, AO Xuefei, et al. Study on coupled 3D seepage and stress fields of the complex channel project[J]. Science China (Techologica Sciences), 2013, 43(11): 1993-1201. (in Chinese) http://www.cqvip.com/qk/98492a/2013011/47900195.html [14] 毛昶熙.渗流计算分析与控制[M].北京:中国水利水电出版社, 2003. MAO Changxi. Seepage computation analysis and control[M]. Beijing: China Water and Power Press, 2003. (in Chinese) [15] 贺武斌, 崔向东, 刘彦忠.基坑开挖及降水井间距对其周围环境影响的模拟研究[J].太原理工大学学报, 2013, 44(3): 381-384. doi: 10.3969/j.issn.1007-9432.2013.03.028 HE Wubin, CUI Xiangdong, LIU Yanzhong. Simulation research on surrounding environment influenced by pit excavation and dewatering well spacing[J]. Journal of Taiyuan University of Technology, 2013, 44(3): 381-384. (in Chinese) doi: 10.3969/j.issn.1007-9432.2013.03.028 [16] 孙蓉琳, 梁杏, 张晓伦, 等.数值模拟技术在基坑降水中的应用[J].岩土力学与工程学报, 2003, 22(增刊1): 2333-2337. http://www.cqvip.com/QK/96026X/2003z1/1000356517.html SUN Ronglin, LIANG Xing, ZHANG Xiaolun, et al. Application of numerical modeling to dewatering design for foundation pit[J]. Chinese Journal of Rock Mechanics and Engeering, 2003, 22(Suppl1): 2333-2337. (in Chinese) http://www.cqvip.com/QK/96026X/2003z1/1000356517.html -
点击查看大图
图(7) / 表 (1)
计量
- 文章访问数: 746
- HTML全文浏览量: 11
- PDF下载量: 412
- 被引次数: 0
