The effect of rock mass gradual deterioration on the mechanism of post-mining subsidence over shallow abandoned coal mines

详细信息    查看全文

• 作者：Ebrahim Fathi Salmi^a ; ^{Ebrahim.FathiSalmi@uon.edu.au} ; Majidreza Nazem^b ; Murat Karakus^c
• 关键词：Mining subsidence ; Room and pillar ; Deterioration ; Tributary Area Method ; Finite Difference Analysis
• 刊名：International Journal of Rock Mechanics and Mining Sciences
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：91
• 期：Complete
• 页码：59-71
• 全文大小：2052 K
• 卷排序：91

文摘

Post-mining subsidence is a challenging problem in rock engineering. The modified Tributary Area Method (TAM) was used to estimate the lifetime of pillars. The effects of gradual deterioration was incorporated in the numerical modelling. The long-term stability of an abandoned room and pillar coal mine was investigated. This study showed that deterioration plays a significant role in the long-term stability of mining excavations.