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Metal Mine ›› 2018, Vol. 47 ›› Issue (04): 168-172.

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Prediction of Water Abundance of the Roof Confined Aquifer Strata Based on FAHP-GRA Evaluation Method

Xue Sen1，Li Wenping1，Guo Qichen2，Liu Shiliang1，Sun Mengya3，Fan Baojiang4   

  1. 1.School of Resources and Geosciences，China University of Mining and Technology，Xuzhou 221008，China；2.Xishan Coal Electricity Group Co.Ltd，Taiyuan 030200，China；3.School of Earth Sciences and Engineering，Nanjing University，Nanjing 210023，China;4.Yanzhou coal Heze Energy Co.，Ltd.Wanfu Coal Mine，Yanzhou 274900，China
  • Online:2018-04-14 Published:2018-06-06

Abstract: The confined water at coal seam roof，as direct source of water inrush，is very important for the safety of coal mining.It is particularly important to accurately evaluate the water abundance of water-bearing strata in mining area.In view of the existing problems in prediction of water bearing capacity of the coal seam roof by the current method，the factors that influence the water bearing capacity are studied.Meanwhile，the factors are quantified，normalized and zoned according to the index of each single factor.By using FAHP-GRA and taking the Longwan mining area as a case，a kind of prediction and evaluation method for comprehensive analysis of water abundance is put forward.

Key words: Coal seam roof, Confined aquifer, FAHP-GRA, Water-abundance