Mechanism and stability evaluation of goaf ground subsidence in the third mining area in Gong Changling District, China

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• 作者：Youhong Sun (1)
  Xiangding Zhang (1)
  Wenfei Mao (1)
  Lina Xu (1)
  
  1. College of Construction Engineering ; Jilin University ; Changchun ; 130026 ; Jilin ; China
  
• 关键词：Goaf ; Ground subsidence ; Stability evaluation ; Influencing factors
• 刊名：Arabian Journal of Geosciences
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：8
• 期：2
• 页码：639-646
• 全文大小：2,381 KB
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• 刊物类别：Earth and Environmental Science
• 出版者：Springer Berlin Heidelberg
• ISSN：1866-7538

文摘

This paper investigates the formation mechanism, relevant influential factors, and distribution laws of the collapse in the third mining area in Gong Changling District, Liaoyang City, China, by employing geological surveying, geophysical investigation, and theoretical analysis. The preliminary evaluation and prediction of ground settlement induced by the goaf collapse are presented. The results show that mining is the primary factor contributing to the ground subsidence and that groundwater infiltration accelerates this process. The three-zone model is proposed to analyse and evaluate the stability of the goaf. Based on this model, we conclude that the strata in the mined area and the surrounding non-mined area are unstable and could be subjected to ground subsidence and ground fissure once disturbed.