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| 盲〔暗〕井; 竖向或斜向的小暗井 | |||
| 矿井; 通道; 暗盲井地下矿从某一点开凿的垂直或倾斜巷道，其目的在于与下一水平连接并探查一水平下有限深度内的底板 | |||
| 盲井; 由上而下开凿的小暗井; 开暗井; 连接矿内各层的斜通道; 地井 | |||
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