基于GOCAD的钻孔数据建模方法与实例研究
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摘要
三维地质建模能清晰地展示地面以下地质体的结构面及相互关系。利用GOCAD软件,提出一种以钻孔为主要数据的地层界面建模方法,包括钻孔数据提取、空间数据库建立、地质界面构建、地层面模型生成和实体模型显示等。着重阐述了在钻孔数据丰富和缺乏的2种情形下,快速构建关键地质界面的技术方法。对某地铁沿线钻孔数据的实例应用表明,本方法构建的三维地质模型与地质事实吻合度高,并能有效地发现地质结构薄弱区段和潜在不良地质问题发育部位。
Three-dimensional geological modeling can clearly show the structural surfaces and interrelationships of geological bodies below the ground. In this paper,a drillhole modeling method based on GOCAD is presented. The method includes acquiring modeling data from drillhole,establishing spatial database,constructing geological interface,generating stratum surface model and yielding entity model. This paper focuses on the method of drillhole data to generate geological interface. No matter in the case of abundant drilling data or lacking data,it can construct accurate geological interfaces rapidly. After a case application of a subway drillhole data,the three-dimensional geological model can find bad geological problems and expose weak sections of geological structure effectively.
Three-dimensional geological modeling can clearly show the structural surfaces and interrelationships of geological bodies below the ground. In this paper,a drillhole modeling method based on GOCAD is presented. The method includes acquiring modeling data from drillhole,establishing spatial database,constructing geological interface,generating stratum surface model and yielding entity model. This paper focuses on the method of drillhole data to generate geological interface. No matter in the case of abundant drilling data or lacking data,it can construct accurate geological interfaces rapidly. After a case application of a subway drillhole data,the three-dimensional geological model can find bad geological problems and expose weak sections of geological structure effectively.
引文
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[4]黄牧,顾雷雨,李新,等.基于Voronoi图的三维地层自动建模方法[J].岩土力学,2017,38(s1):455-462.
[5]林冰仙,周良辰,闾国年.虚拟钻孔控制的三维地质体模型构建方法[J].地球信息科学学报,2013,15(5):672-679.
[6]罗智勇,杨武年.基于钻孔数据的三维地质建模与可视化研究[J].测绘科学,2008,33(2):130-132.
[7]王润怀,李永树,刘永和,等.三维地质建模中虚拟钻孔的引入及其确定[J].地质与勘探,2007,43(3):102-107.
[8]朱良峰,吴信才,刘修国,等.基于钻孔数据的三维地层模型的构建[J].地理与地理信息科学,2004,20(3):26-30.
[9]吴志春,郭福生,姜勇彪,等.基于地质剖面构建三维地质模型的方法研究[J].地质与勘探,2016,52(2):363-375.
[10]吴志春,郭福生,林子瑜,等.三维地质建模中的多源数据融合技术与方法[J].吉林大学学报(地球科学版),2016,46(6):1895-1913.
[2]Lemon A M,Jones N L.Building solid models from boreholes and user-defined cross-sections[J].Computers&Geosciences,2003,29(5):547-555
[3]李亦纲,曲国胜,陈建强.城市钻孔数据地下三维地质建模软件的实现[J].地质通报,2005,24(5):470-475.
[4]黄牧,顾雷雨,李新,等.基于Voronoi图的三维地层自动建模方法[J].岩土力学,2017,38(s1):455-462.
[5]林冰仙,周良辰,闾国年.虚拟钻孔控制的三维地质体模型构建方法[J].地球信息科学学报,2013,15(5):672-679.
[6]罗智勇,杨武年.基于钻孔数据的三维地质建模与可视化研究[J].测绘科学,2008,33(2):130-132.
[7]王润怀,李永树,刘永和,等.三维地质建模中虚拟钻孔的引入及其确定[J].地质与勘探,2007,43(3):102-107.
[8]朱良峰,吴信才,刘修国,等.基于钻孔数据的三维地层模型的构建[J].地理与地理信息科学,2004,20(3):26-30.
[9]吴志春,郭福生,姜勇彪,等.基于地质剖面构建三维地质模型的方法研究[J].地质与勘探,2016,52(2):363-375.
[10]吴志春,郭福生,林子瑜,等.三维地质建模中的多源数据融合技术与方法[J].吉林大学学报(地球科学版),2016,46(6):1895-1913.