基于FLAC<sup>3D</sup>的复杂地貌三维地质建模

汪吉林; 丁陈建; 吴圣林

基于FLAC^3D的复杂地貌三维地质建模

1.
中国矿业大学资源与地球科学学院, 江苏徐州 221006
2.
徐州中国矿大岩土工程新技术发展有限公司, 江苏徐州 221006

基金项目:

科技部科技型中小企业技术创新基金项目 05C26213200587

详细信息

作者简介:
汪吉林(1969-), 男, 博士, 副教授, 主要从事矿产普查与勘探、地质工程专业的科研工作。Tel:0516-83885766, E-mail:wjl-cumt@163.com

中图分类号: TU45;O241
计量
- 文章访问数: 225
- HTML全文浏览量: 83
- PDF下载量: 13
- 被引次数: 0
出版历程
- 收稿日期: 2008-03-26
- 刊出日期: 2008-06-01

3D GEOLOGICAL MODELING OF COMPLEX LANDFORMS BASED ON FLAC^3D

1.
College of Resources and Earth Science, China University of Mining and Technology, Xuzhou 221008, Shandong, China
2.
CUMT Geotechnical Engineering & New Technology Development Co., Ltd., Xuzhou 221008, Shandong, China

摘要

摘要: 针对复杂地貌和地质构造条件下数值模拟的建模问题, 基于FLAC^3D平台提出了从局部到整体的建模思想, 采用Brick单元和Tetrahedron单元通过编程生成复杂地貌条件下的三维地质体模型。利用趋势面分析法拟合出层状连续地质体, 将其定义为不同的"群", 建立了多层状三维地质体结构模型。采用interface界面模拟出了断层面, 并与趋势面相结合, 构建了断层上下盘中的地层。认为通过数学分析结合计算机编程, 可以实现直接在FLAC^3D中进行复杂地貌和地质构造条件下的地质体建模。
- 数值模拟 /
- 建模 /
- FLAC^3D /
- 趋势面分析 /
- 复杂地貌
Abstract: With respect to the problem of numerical modeling for simulation in conditions of complex lan dforms and geological structure, the idea of modeling from the part to whole was put forward based on the FLAC^3D platform.Using the primitive mesh shapes of brick and tetrahedron, a 3D model of the geologic body under complex landform conditions was constructed by means of computer programming.A lay ered continuous geological body was fitted up using the trend surface analysis and defined as different "groups".Thus a multi-layered 3D structure model of the geologic body was constructed.The fault plane in the geologic body was simulated by using interface.On that basis, combined with the trend surface analysis, the strata of the hanging wall and footwall of a fault were simulated.The authors consider that a 3D model of the geologic body with complex landforms and geological structure can be constructed in FLAC^3D directly by using mathematical analysis and computer programming.
- numerical simulation /
- modeling /
- FLAC^3D /
- trend surface analysis /
- complex landform

HTML全文

图 1 天子庙隧道地形图

Figure 1. Topographic map of the Tianzi temple tunnel

下载: 全尺寸图片幻灯片

图 2 天子庙隧道地形立体示意图

Figure 2. 3D sketch map of the Tianzi temple tunnel

下载: 全尺寸图片幻灯片

图 3 FLAC^3D中的六面体块体单元和四面体单元

Figure 3. Brick and tetrahedron in FLAC^3D

下载: 全尺寸图片幻灯片

图 4 900m高程以上三维地质体模型

Figure 4. 3D geological model at an elevation of >900m

下载: 全尺寸图片幻灯片

图 5 12煤底板等高线原图(左)与拟合图形(右)

Figure 5. Contour map of No.12 coal seam floor (the left is the original map, and the right is the fitting map)

下载: 全尺寸图片幻灯片

图 6 研究对象整体的三维初始模型

Figure 6. Original 3D model of the whole study object

下载: 全尺寸图片幻灯片

图 7 研究对象的三维地质体模型结构

Figure 7. Structure of the 3D geological model of the study object

下载: 全尺寸图片幻灯片

图 8 研究对象三维地质体中断层的构建

Figure 8. Fault in the 3D geological model of the study object

下载: 全尺寸图片幻灯片

表 1 各煤层和部分岩组底板趋势面拟合成果

Table 1. Fitting parameters of trend surface analy sis for various coal seams and some floors

参考文献(13)

[1]	Michaud LH.Development of a 3D geologic model and database for dragline mine planning on a microcomputer [J].International Journal of Surface Mining & Reclamation, 1992, 6 (4):179~185. doi: 10.1080-09208119208944334/
[2]	曹代勇, 李青元, 朱小弟, 等.地质构造三维可视化模型探讨[J].地质与勘探, 2001, 37 (4):60~62. http://d.old.wanfangdata.com.cn/Periodical/dzykt200104017
[3]	王纯祥, 白世伟, 贺怀建.三维地层可视化中地质建模研究[J].岩石力学与工程学报, 2003, 22 (10):1722~1726. doi: 10.3321/j.issn:1000-6915.2003.10.026
[4]	何满潮, 李学元, 刘斌, 等.侵入型岩体三维可视化构模技术研究[J].煤田地质与勘探, 2004, 32 (4):29~32. doi: 10.3969/j.issn.1001-1986.2004.04.010
[5]	武强, 关文革, 贾丽萍, 等.面向矿区复杂地质体的四面体生成算法[J].中国矿业大学学报, 2005, 34 (5):617~625. doi: 10.3321/j.issn:1000-1964.2005.05.016
[6]	ZHOU Ye, LIN Ge, GONG Fa-xiong, et al.Application of 3D visual techniques in Daliuta coal mine [J].Journal of China University of Mining and Technology, 2006, 16 (1):77~81. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=JJ025589049
[7]	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, 2001.
[8]	汪吉林, 姜波, 王超勇.矿井构造应力场的模拟研究[J].地质力学学报, 2007, 13 (3):239~246. doi: 10.3969/j.issn.1006-6616.2007.03.006
[9]	侯恩科, 吴立新, 李建民.三维地学模拟与数值模拟的耦合方法研究[J].煤炭学报, 2002, 27 (4):388~392. doi: 10.3321/j.issn:0253-9993.2002.04.012
[10]	王明华, 白云.层状岩体三维可视化构模与数值模拟的集成研究[J].岩土力学, 2005, 26 (7):1123~1126. doi: 10.3969/j.issn.1000-7598.2005.07.024
[11]	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. doi: 10.3321/j.issn:1000-6915.2005.06.019
[12]	Itasca Consulting Group, Inc. FLAC user' s manual [M]. Minnesot a: State University of Minnesota, CSA, 1997.
[13]	韩金炎.数学地质[M].北京:煤炭工业出版社, 1987.