煤矿矿井水  mine water; mine water in coalmine; coal mine drainage

煤矿矿井建设  mining pit construction

煤炭矿井  Coal mine

矿井水水质评价  mine water quality assessment

水井、井水及废水  Wells and well water and waste water

褐煤水煤浆  brown coal water slurry

精煤水煤浆  CWS; refined coal water slurry

矿井煤层气  CMM

煤矿井下  Coal mine; coal mining underground; mine; in Underground Mine; mine underground; underground coalmine; underground coal mine; coal mine underground; downhole coal mine; underground of mine; Underground mines

煤矿井下采煤机  mine shearer

煤矿井下工人  Colliery

煤矿井下梭车用软电缆  cabtyre cables used for the shuttles under coal mine

煤矿井下用隔爆型三相异步电动机  Flame-Proof Three-Phase Induction Motor for Underground Mine Application

煤矿井下综合自动化系统  integrated automation system of coal mine

煤矿矿难  coal mine disaster; coal mine accidents

煤矿矿区  Coal mining area

煤矿煤层气  CMM; coal mine methane

煤矿水害  Coal mine’s water disaster; coalmine water disaster; coal mine flood; coalmine flooding

煤矿水害预测  forecast of water disaster in coal mine