地层分布模型自匹配的剖面图动态生成算法

传统的剖面图算法对地层尖灭、透镜体、地层缺失处理能力差,算法精度难以满足生产要求.针对该问题,笔者提出一种地层分布模型自匹配的地质剖面图构建算法.首先,构建了工程钻孔数据结构;然后,根据地层分布规律定义地层分布模式,并推导出各个模式下地层剖面线生长策略和规则,通过地层分布模型规则和匹配算法判断地层点的剖面线从属关系;最后,将剖面线点集连接成线,并进行标注与地图整饰.笔者算法克服了传统钻孔相邻连接造成的连续性差、一致性欠缺的缺点,能够对地质剖面的歼灭、透镜体、地层缺失现象有准确地处理.实验表明,采用本文算法所构建的地质剖面图能准确、高效地反映研究区域的地层分布,广泛适用于工程生产.

Drill section algorithm based on auto-matching of stratigraphic distribution pattern

Traditional sectional view algorithm lacks accurate processing capability for such phenomena as pinch off,absence,and lenses of strata.The accuracy of the algorithm can hardly meet production requirements.To solve these problems,this paper proposes an auto-matching algorithm for building geological sectional view by stratigraphic distribution pattern.First,the project drilling data structure is built;then,based on the distribution of strata,the patterns of strata are defined and the section line growth policies and rules of each model are deduced.From left to right,from top to bottom,the sequence stratum pattern matching method is used;according to the problem as to which section line the stratum point belongs to is determined;finally,the section line sets of points are connected into the line,thus finishing map annotation and map decoration.The algorithm overcomes the problem of poor continuity existent in the traditional drilling adjacent connection method caused by the lack of consistency disadvantage.Stratum pattern auto-matching method achieves automatic section line growth and can wipe out stratum pinch off,stratum absence,stratum lens phenomenon accurately.Experiments show that the geological profile constructed algorithm can accurately and efficiently reflect the stratigraphic structure of the study area,and hence it is widely used in engineering production.