Abstract:

Water resource storage by goaf is rarity in arid water shortage mining area, but it had not yet understudied. Therefore water balance method was applied in water resource transformation in Coal Area. Water storage conditions by goaf were analyzed by hydrogeololgical analogy method and pumping tests，and conditions were divided into four types. Based on hydrogeololgical parameters division of goaf, water storage by goaf time sequence model was established. The results show that the key of mining area water system to positive balance is water storage by goaf. The beneficial wate storageconditions are order of sand-clay-bedrock, bedrock-gully, clay-bedrock and drained boundary. Based on the time sequence model of water storage by goaf, water resources storage by goaf are 21.38 million m3 in Shennan Mining Area by the end of 2015. The research results will be helpful for water resources developing fully in arid water shortage Mining Area.

Key words: arid water shortage mining area, water preserved mining, storage by goaf, storage time sequence