东北煤田岩层含水透水性基本特征

Basic Features of Water-bearing and Permeability in Formationof Coal-field of North-eastern China

在以煤田为单元的基础上,经过汇集资料分析犤1犦、犤2犦、①,提出了东北煤田岩层含水透水性基本特征:①东北普遍存在随深度增加其含水与透水性减弱的规律;②不同岩性尤其是岩石的密度将构成不同的含水类型;③区域构造和沉积环境使岩溶水只在特定的条件下才能危及矿井的安全生产;④西部巨厚褐煤层裂隙含水层显示其独特的水文地质特征;⑤补给条件是矿井涌水量大小的主要因素;⑥断层、侵入体、强含水带中的不均质性使其含水与透水性趋于复杂。因此只有在充分认识总体规律的基础上,才能使工作具备目的性而获得最大效益。

The paper has submitted basic features of water-bearing and permeability in formation of coal-field of North-eastern China as follows: 1There are law that water-bearing and permeability weakened along with depth increased; 2different lithologic characters especially compactability of rocks may be formed different water-bearing type; 3Regional Structure and depositional environment make Karst water damage safety of mine only under special conditions; 4fracture aquifer of huge thick lignite in western area showing special hydrogeological features; 5conditions of recharge are main factors which influenced outflow of water in mine; 6Inhomogeneity of fault, intrusion, intensely water-bearing zone may be make water-bearing and permeability tend to complex. So that on the basis of understanding general laws, may be make work purposefully and obtain best effect.