Calculation of stratum surface principal curvature based on a moving least square method

作     者：LI Guo-qing MENG Zhao-ping MA Feng-shan ZHAO Hai-jun DING De-min LIU Qin WANG Cheng 

作者机构：Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China School of Mmeral Resources and Safety Engmeertng China University of Mining ＆ Tecl~nology BeOing 100083 China Sanshandao Gold Mine Shandong Gold Group Corporation Limited Laizhou Shandong 261442 China 

出 版 物：《Journal of China University of Mining and Technology》 (中国矿业大学学报（英文版）)

年 卷 期：2008年第18卷第1期

页      面：59-63页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 

基　　金：Projects 2007CB209405 and 2002CB412702 supported by the National Basic Research Program of China KZCX2-YW-113 by the Important Directive Item of the Knowledge Innovation Project of Chinese Academy of Sciences 40772100 by the National Natural Science Foundation of China 

主　　题：principal curvatures moving least square method surface fitting structural fractures 

摘      要：With the east section of the Changji sag Zhunger Basin as a case study, both a principal curvature method and a moving least square method are elaborated. The moving least square method is introduced, for the first time, to fit a stratum surface. The results show that, using the same-degree base function, compared with a traditional least square method, the moving least square method can produce lower fitting errors, the fitting surface can describe the morphological characteristics of stratum surfaces more accurately and the principal curvature values vary within a wide range and may be more suitable for the prediction of the distribution of structural fractures. The moving least square method could be useful in curved surface fitting and stratum curvature analysis.