改进DS证据理论算法岩溶特征融合与三维成像
师学明 , 何家乐 , 张凯 , 王菲 , 张亚星 , 田杉 , 姚洪锡 , 蒋道君 , 郑洪
地球科学 ›› 2025, Vol. 50 ›› Issue (07) : 2912 -2924.
改进DS证据理论算法岩溶特征融合与三维成像
Karst Feature⁃Level Data Fusion of Comprehensive Exploration Data Using Improved DS Evidence Theory Algorithm
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地下岩溶会给陆路交通工程基础设施的设计、施工和安全运行带来巨大的安全隐患.为探明地下岩溶发育情况,对空天地多源异构综合勘察数据,包括遥感解译、工程地质调绘、钻孔、物探高密度电法和瞬变电磁法解译成果资料,统一时空坐标和数据标准,实现岩溶不良地质体的数据级融合.在此基础上,建立地下岩溶不良地质体的识别框架,构建地下空间点域初始基本概率分配函数赋值方法,采用基于Kendall相关系数改进的DS证据理论算法,对综合勘察数据证据进行多源数据融合获取岩溶评价指标,三维空间插值网格化后进行岩溶特征三维成像.结果表明,改进DS算法有效解决了综合勘察成果间的高度冲突问题,形成对岩溶目标体的智能决策,实现了综合勘察解译成果的岩溶地质信息特征级融合.融合结果的三维成像,提高了地下岩溶不良地质体勘察的可靠性和精度,提升工作效率30%以上.DS智能融合算法为陆路交通工程在设计、施工和运行的全寿命周期条件下,处置岩溶灾害提供了有效的方法指导和合适的评价手段.
Underground Karst formations pose significant safety risks to the design, construction, and safe operation of land transportation projects. To investigate the development of underground karst, comprehensive multi-source heterogeneous survey data were utilized, including remote sensing interpretation, engineering geological mapping, drill hole data, and the results from electrical resistivity tomography and transient electromagnetic methods. These data were unified in terms of temporal and spatial coordinates and standards to achieve data-level fusion of adverse karst geological bodies. Based on this foundation, a recognition framework for underground karst geological bodies was established. A method for assigning initial basic probability assignment (BPA) functions to underground spatial point domain was developed, and a modified Dempster-Shafer (DS) evidence theory algorithm based on Kendall’s correlation coefficient was employed for multi-source data fusion to obtain karst evaluation indices. After 3D spatial interpolation, 3D imaging of karst features was plotted. The results indicate that the improved DS algorithm effectively solves the conflicts among comprehensive survey evidence, enabling intelligent decision-making regarding karst targets. The improved DS algorithm facilitated the integration of karst geological information features from comprehensive survey results. The 3D imaging of the integrated results enhanced the reliability and accuracy of underground karst geological body investigations, increasing work efficiency by 30% or more, and providing methodological guidance and evaluation tools for engineering design, construction, and operation.
DS证据理论 / 岩溶 / 数据融合 / 综合勘察 / 多源异构数据 / 地球物理学.
DS evidence theory / karst / data fusion / comprehensive survey / multi⁃source heterogeneous data / geophysics
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国家重点研发计划项目(2021YFB2600402)
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