Subject | English | Chinese |
expl. | shielding method | 掩护筒法在不稳定地层中,先顶人金属筒体,而后在其掩护下进行井巷施工的方法 |
mining. | shielding method | 盾盖式开采法 |
hydrol. | shielding method | 盾构法 |
mining. | shielding method | 掩护筒法 |
expl. | shielding method | 掩护支架采煤法在急斜煤层中,沿走向布置采煤工作面,用掩护支架将采空区和工作空间隔开,向俯斜推进的采煤方法 |