基于勘探剖面的三维地质模型快速构建及不确定性分析
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摘要
针对传统勘探剖面构模人工干预较多、模型精确性有待提高等问题,研究了一种智能化与人机交互相结合的三维地质模型快速构建方法,并结合该方法对控制模型不确定性的主要因素及约束方法进行了分析。该方法以面向勘探剖面的三维地质模型构建工作流程为主线,通过优化提升各环节自动化、智能化工作程度以提高三维地质模型构建的速度与精度。基于该方法研发的软件功能模块能较好地实现勘探剖面二维平面快速编图及剖面边界三维空间动态重构,进而基于三维勘探剖面实现面向用户自定义属性约束的地质界线动态提取和三维地质模型快速构建。经实际应用检验表明,该方法不仅能有效提高三维地质模型构建的效率和精度,而且对模型几何形态的不确定性程度具有较好的约束控制作用。
Because of numerous human interventions and low precise models in traditional 3 D geological modeling based on exploration sections, a new method which combines intelligence and human-computer interaction in 3 D geological modeling is elicited to improve the efficiency and accuracy of models. On this basis, the main factors and constraint methods of uncertainty in controlling models geometric shapes are analyzed. By enhancing the automation and intelligence of traditional 3 D geological modeling based on exploration sections, the speed and quality of 3 D geological modeling are improved. Some related functions of digital mine software,such as Quanty View realized by this method can realize rapid mapping in 2 D space and automatic reconstruction in 3 D space for exploration sections. Based on those sections, 3 D geological boundaries can be automatically obtained and 3 D geological models can be constructed. The practical application in some mines shows that this method can not only improve the efficiency and accuracy of 3 D geological modeling, but also constrain the uncertainty of 3 D models geometric shapes.
Because of numerous human interventions and low precise models in traditional 3 D geological modeling based on exploration sections, a new method which combines intelligence and human-computer interaction in 3 D geological modeling is elicited to improve the efficiency and accuracy of models. On this basis, the main factors and constraint methods of uncertainty in controlling models geometric shapes are analyzed. By enhancing the automation and intelligence of traditional 3 D geological modeling based on exploration sections, the speed and quality of 3 D geological modeling are improved. Some related functions of digital mine software,such as Quanty View realized by this method can realize rapid mapping in 2 D space and automatic reconstruction in 3 D space for exploration sections. Based on those sections, 3 D geological boundaries can be automatically obtained and 3 D geological models can be constructed. The practical application in some mines shows that this method can not only improve the efficiency and accuracy of 3 D geological modeling, but also constrain the uncertainty of 3 D models geometric shapes.
引文
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[2] 陈国旭,吴冲龙,张夏林,等.三维地质建模与地矿勘查图件编制一体化方法研究[J].地质与勘探,2010,6(3):542-546.
[3] 吴冲龙,何珍文,翁正平,等.地质数据三维可视化的属性、分类和关键技术[J].地质通报,2011,30(5):642-649.
[4] Wu Qiang,Xu Hua,Zou Xukai,et al.An effective method for 3D geological modeling with multi-source data integration[J].Computers & Geosciences,2005,31(1):35-43.
[5] 张夏林,蔡红云,翁正平,等.“玻璃国土”建设中的矿山高精度三维地质建模方法[J].地质科技情报,2012,31(6):23-27.
[6] Kaufmann O,Martin T.3D geological modelling from boreholes,cross-sections and geological maps application over former natural gas storages in coal mines[J].Computers & Geosciences,2008,34(3):278-290.
[7] Tipper J C.The study of geological objects in three dimensions by the computerized reconstruction of serial sections[J].Geology,1976,84(4):476-484.
[8] 屈红刚,潘懋,王勇,等.基于含拓扑剖面的三维地质建模[J].北京大学学报:自然科学版,2006,42(6):717-722.
[9] 翁正平,何珍文,毛小平,等.三维可视化动态地质建模系统研发与应用[J].地质科技情报,2012,31(6):59-66.
[10] 吴立新,殷作如,钟亚平.再论数字矿山:特征、框架与关键技术[J].煤炭学报,2003,28(1):1-6.
[11] 吴冲龙, 田宜平, 张夏林,等.数字矿山建设的理论与方法探讨[J].地质科技情报,2011,30(2):102-108.
[12] 武强,徐华.数字矿山中三维地质建模方法与应用[J].中国科学:地球科学,2013,43(12):1996-2006.
[13] Carr G,Denton G,Giblin A,et al.The“Glass Earth”:Geochemical frontiers in exploration through cover[J].Australian Institute of Geoscientists Bulletin,1999,28:33-40.
[14] 吴冲龙,翁正平,刘刚,等.论中国“玻璃国土”建设[J].地质科技情报,2012,31(6):1-8.
[15] 吴冲龙,刘刚.“玻璃地球”建设的现状、问题、趋势与对策[J].地质通报,2015,34(7):1280-1287.
[16] 陈国旭,张夏林,田宜平,等.三维空间传统方法资源储量可视化动态估算及应用[J].重庆大学学报,2012,35(7):119-126.
[17] Bardossy G,Fodor J.Evaluation of uncertainties and risks in geology[M].Berlin:Springer,2004.
[18] 左仁广,夏庆霖.矿产预测评价中不确定性传播模型[J].地球物理学进展,2008,23(4):1283-1285.
[19] 朱良峰,吴信才,潘信.三维地质结构模型精度评估理论与误差修正方法研究[J].地学前缘,2009,16(4):363-370.
[20] 赵鹏大,池顺都,李志德,等.矿产勘查理论与方法[M].武汉:中国地质大学出版社,2001.
[21] 国土资源部.GB/T 33444-2016固体矿产勘查工作规范[S].北京:中国标准出版社,2017.