Prediction of the Height of the Water-Conducting Zone Above the Mined Panel in Solid Backfill Mining

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• 作者：Jixiong Zhang (1) (2)
  Haiqiang Jiang (1) (2)
  Xuejie Deng (1) (2)
  Feng Ju (3)
  
• 关键词：Water inrush ; Filling ratio ; Water leakage ; Numerical modeling ; Multiple regression analysis
• 刊名：Mine Water and the Environment
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：33
• 期：4
• 页码：317-326
• 全文大小：1,482 KB
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• 作者单位：Jixiong Zhang (1) (2)
  Haiqiang Jiang (1) (2)
  Xuejie Deng (1) (2)
  Feng Ju (3)
  
  1. School of Mines, China University of Mining and Technology (CUMT), Xuzhou, 221116, China
  2. Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, Xuzhou, 221116, China
  3. State Key Laboratory for Geomechanics and Deep Underground Engineering, CUMT, Xuzhou, 221116, China
  
• ISSN：1616-1068

文摘

Numerous water inrush disasters have been associated with Chinese coal mines over the past 30?years. Accordingly, solid backfill mining (SBM) has been widely adopted to extract coal resources from beneath aquifers to reduce the magnitude and scope of overburden failure. Therefore, accurate determination of the height of the water-conducting zone associated with SBM is particularly important. The primary factors influencing development of water-conducting zones within solid backfill mines have been quantified in the current study, based on overburden movement and deformation characteristics. Numerical simulation has been used to evaluate the height of water conducting zones with respect to mine heights and backfill ratios. The results have been analyzed via multiple regression, leading to the development of a predictive equation. Field trials undertaken as part of the current study indicate a high level of accuracy with the developed equation.