High-precision modeling of complex terrain in mining areas based on spatial variability modified ordinary Kriging method

doi:10.13474/j.cnki.11-2246.2022.0334

Bulletin of Surveying and Mapping ›› 2022, Vol. 0 ›› Issue (11): 106-111.doi: 10.13474/j.cnki.11-2246.2022.0334

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High-precision modeling of complex terrain in mining areas based on spatial variability modified ordinary Kriging method

YU Guangting^1,2, LIU Tongwen^1,2, WANG Qi³, PAN Mao⁴, LI Tao^1,2, SONG Guanhan^1,2, LIU Shanwei⁵

1. Shandong Institute of Geological Surveying and Mapping, Jinan 250002, China;
2. Engineering Research Center for Geological Big Data Development and Application, Shandong Provincial Bureau of Geology and Mineral Resources, Jinan 250002, China;
3. School of Surveying and Geo-Informatics, Shandong Jianzhu University, Jinan 250101, China;
4. College of Earth and Space Sciences, Peking University, Beijing 100871, China;
5. China University of Petroleum, Qingdao 266580, China

Received:2022-02-14 Published:2022-12-08

Abstract

Abstract: The ordinary Kriging method is an effective method to construct a three-dimensional terrain model of the mining areas and reveal the dynamic changes of the surface subsidence deformation field. However, the ordinary Kriging method presents the problem of the smoothing effect, which causes the underestimation of spatial variability and fails to truly reflect the complex surface morphological characteristics of the mining areas. In this paper, a OK-SVM (spatial variability modified ordinary Kriging) method is adopted for the application experiment of high-precision modeling of the complex terrain based on the real sampling data in a mining area, and a comparative analysis is made with the existing methods in terms of modeling accuracy and spatial variability reproduction. The results show that this method can reduce the influence of the smoothing effect on modeling and provides higher modeling accuracy and spatial variability reproduction ability, which has strong applicability in the application of high-precision modeling of complex terrain in mining areas. It can be used as a reliable modeling tool to analyze the dynamic variation pattern of complex surface subsidence deformation fields in mining areas.

Key words: mining areas, complex terrain, high-precision surface modeling, ordinary Kriging, spatial variability modification

CLC Number:

P258

YU Guangting, LIU Tongwen, WANG Qi, PAN Mao, LI Tao, SONG Guanhan, LIU Shanwei. High-precision modeling of complex terrain in mining areas based on spatial variability modified ordinary Kriging method[J]. Bulletin of Surveying and Mapping, 2022, 0(11): 106-111.

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High-precision modeling of complex terrain in mining areas based on spatial variability modified ordinary Kriging method

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