A prediction model and numerical simulation of the location of the longwall face during the highest possible failure period of gob gas ventholes

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• 作者：Yingke Liu^a ; ^b ; Fubao Zhou^a ; ^{zfbcumt@163.com} ; Xinze Geng^a ; Lipeng Chang^a ; Jianhong Kang^a ; Guanglei Cui^c ; Shaofeng Zhang^a
• 关键词：Gob gas ventholes ; Highest possible failure period ; Longwall face advancing ; The location of longwall face
• 刊名：Journal of Natural Gas Science and Engineering
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：37
• 期：Complete
• 页码：178-191
• 全文大小：4310 K
• 卷排序：37

文摘

We build a prediction model of the highest possible failure period of GGVs. We predict the face location when the relative displacement of strata is maximal. The lower casing has highest probability of failure due to the bigger shearing action. The early period of working face passing GGV is the highest possible failure period.