COMPLEX FLAC3D THREE DIMENSIONAL GEOLOGICAL MODELING BASED ON MOVING LEAST SQUARES METHOD
-
摘要: 针对岩土力学分析软件FLAC3D建模效率较低的不足之处，在分析FLAC3D建模命令以及网格模型*.FLAC3D文件格式特点的基础上，介绍了空间坐标变换、MLS插值的方法与意义，并提出了新的建模方法，开发了相应的计算机辅助建模程序。该程序直接读取原始数据点，无需借助第三方软件，通过坐标变换、MLS插值，可快速生成具有复杂边界的地质模型，且便于材料参数和应力边界条件参数的赋值，可有效地提高工作效率。Abstract: FLAC3D is an excellent computer code for rock-soil mechanics numerical simulation, but it performs poor in modeling complex geological body. The features of modeling commands and *FLAC3D type file were elaborated, the space coordinate transformation and MLS interpolation method were introduced in detailed and a new modeling method was proposed and a computer aided modeling program was developed. The input of the program is just original data and does not need the aid of other commercial software. Through coordinate transformation and MLS interpolation, our method can quickly build complex geological model and is convenient to set material parameters and apply the stress boundary conditions, thereby can effectively improve the work efficiency.
-
Key words:
- coordinate transformation /
- FLAC3D /
- complex model /
- moving least squares method
-
表 1 力学参数
Table 1. Mechanical parameters
-
[1] 刘波, 韩彦辉.FLAC原理、实例与应用指南[M].北京:人民交通出版社, 2005LIU Bo, HAN Yan-hui. Manual of FLAC principle, examples and application[M]. Beijing:China Communications Press, 2005. [2] Itasca Consulting Group Inc. FLAC user's manual[M]. Minnesota:State University of Minnesota, USA, 1997. [3] 胡斌, 张倬元, 黄润秋, 等.FLAC3D前处理程序的开发及仿真效果检验[J].岩石力学与工程学报, 2002, 21(9):1387~1391 http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200209026.htmHU Bin, ZHANG Zhuo-yuan, HUANG Run-qiu, et al. Development of pre-processing package for FLAC3D and verification of its simulating effects[J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(9):1387~1391. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200209026.htm [4] 徐能雄, 武雄, 汪小刚, 等.基于三维地质建模的复杂构造岩体六面体网格剖分方法[J].岩土工程学报, 2006, 28(8):957~961 http://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200608005.htmXU Neng-xiong, WU Xiong, WANG Xiao-gang, et al. Approach to automatic hexahedron mesh generation for rock mass with complex structure based on 3D geological modeling[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(8):957~961. http://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200608005.htm [5] 罗周全, 吴亚斌, 刘晓明, 等.基于SURPAC的复杂地质体FLAC3D模型生成技术[J].岩土力学, 2008, 29(5):1334~1338 http://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200805047.htmLUO Zhou-quan, WU Ya-bin, LIU Xiao-ming, et al. FLAC3D modeling for complex geologic body based on SURPAC[J]. Rock and Soil Mechanics, 2008, 29(5):1334~1338. http://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200805047.htm [6] 崔芳鹏, 胡瑞林, 刘照连, 等.基于surfer平台的FLAC3D复杂三维地质建模研究[J].工程地质学报, 2008, 16(5):699~702 http://www.cnki.com.cn/Article/CJFDTOTAL-GCDZ200805023.htmCUI Fang-peng, HU Rui-lin, LIU Zhao-lian, et al. Surfer software platform based complex three-dimensional geological digital models for pre-processing of FLAC3D[J]. Journal of Engineering Geology, 2008, 16(5):699~702. http://www.cnki.com.cn/Article/CJFDTOTAL-GCDZ200805023.htm [7] 廖秋林, 曾钱帮, 刘彤, 等.基于ANSYS平台复杂地质体FLAC3D模型的自动生成[J].岩石力学与工程学报, 2005, 24(6):1010~1013 http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX20050600I.htmLIAO Qiu-lin, ZENG Qian-bang, LIU Tong, et al. Automatic model generation of complex geologic body with FLAC3D based on ANSYS platform[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(6):1010~1013. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX20050600I.htm [8] 姬保静, 刘伟韬, 任强.FLAC3D中复杂模型的三维建模技巧[J].安全与环境学报, 2006, 6(增刊):69~72 http://www.cnki.com.cn/Article/CJFDTOTAL-AQHJ2006S1025.htmJI Bao-jing, LIU Wei-tao, REN Qiang. Three-dimensional modeling technique of complicated model in FLAC3D[J]. Journal of Safety and Environment, 2006, 6(Supp.):69~72. http://www.cnki.com.cn/Article/CJFDTOTAL-AQHJ2006S1025.htm [9] 徐文杰, 胡瑞林, 李厚恩, 等.CAD软件在工程地质三维建模中的应用[J].工程地质学报, 2007, 15(2):279~283 http://www.cnki.com.cn/Article/CJFDTOTAL-KJFT201615004.htmXU Wen-jie, HU Rui-lin, LI Hou-en, et al. Application of CAD software in 3D modeling of engineering geology[J]. Journal of Engineering Geology, 2007, 15(2):279~283. http://www.cnki.com.cn/Article/CJFDTOTAL-KJFT201615004.htm [10] 王希宝, 李天斌, 许勇.FLAC二维模型简化建模方法及应用[J].中国地质灾害与防治学报, 2008, 19(1):82~85 http://www.cnki.com.cn/Article/CJFDTOTAL-ZGDH200801019.htmWANG Xi-bao, LI Tian-bin, XU Yong. A simplified method for construction of geometric model and its application in FLAC2D numerical modeling[J]. The Chinese Journal of Geological Hazard and Control, 2008, 19(1):82~85. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGDH200801019.htm [11] 唐辉明, 晏鄂川, 胡新丽.工程地质数值模拟的理论与方法[M].武汉:中国地质大学出版社, 2001TANG Hui-ming, YAN E-chuan, HU Xin-li. Theory and application of engineering geology numerical simulation[M]. Wuhan:China University of Geosciences Press, 2001. [12] 汪吉林, 丁陈建, 吴圣林.基于FLAC3D的复杂地貌三维地质建模[J].地质力学学报, 2008, 14(2):149~157 http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20080215&journal_id=dzlxxbWANG Ji-lin, DING Chen-jian, WU Sheng-lin. 3D geological modeling of complex landforms based on FLAC3D[J]. Journal of Geomechanics, 2008, 14(2):149~157. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20080215&journal_id=dzlxxb [13] 郑文棠, 徐卫亚, 童富果, 等.复杂边坡三维地质可视化和数值模型构建[J].岩石力学与工程学报, 2007, 26(8):1633~1644 http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200708018.htmZHENG Wen-tang, XU Wei-ya, TONG Fu-guo, et al. 3D geologicalvisualization and numerical modeling of complicated slope[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(8):1633~1644. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200708018.htm [14] 金业权, 周创兵.滑动最小二乘法深部地层应力场模拟计算中的应用研究[J].岩石力学与工程学报, 2004, 23(23):4028~4032 doi: 10.3321/j.issn:1000-6915.2004.23.020JIN Ye-quan, ZHOU Chuang-bing. Application study of moving least square method to simulation of in-situ stresses with large depth[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(23):4028~4032. doi: 10.3321/j.issn:1000-6915.2004.23.020 [15] LI Guo-qing, MENG Zhao-ping, MA Feng-shan, et al. Calculation of stratum surface principal curvature based on a moving least squares method[J]. Journal of China University of Mining & Technology, 2008, 18(1):59~63. http://kns.cnki.net/KCMS/detail/detail.aspx?filename=zhkd200801013&dbname=CJFD&dbcode=CJFQ [16] 曾清红, 卢德唐.基于移动最小二乘法的曲线曲面拟合[J].工程图学学报, 2004, 25(1):84~89 http://www.cnki.com.cn/Article/CJFDTOTAL-GCTX200401016.htmZENG Qing-hong, LU De-tang. Curve and surface fitting based on moving least square methods[J]. Journal of Engineering Graphics, 2004, 25(1):84~89. http://www.cnki.com.cn/Article/CJFDTOTAL-GCTX200401016.htm [17] 孙威, 张莺.一种新兴的数值方法——无网格方法[J].辽宁工学院学报, 2005, 25(4):258~262 http://cdmd.cnki.com.cn/Article/CDMD-10487-1013274211.htmSUN Wei, ZHANG Ying. A new numerical method:Meshless method[J]. Journal of Liaoning Institute of Technology, 2005, 25(4):258~262. http://cdmd.cnki.com.cn/Article/CDMD-10487-1013274211.htm -
下载:
图(5) / 表(1)
计量
- 文章访问数: 204
- HTML全文浏览量: 100
- PDF下载量: 8
- 被引次数: 0
