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我国幅员辽阔,矿产丰富,地质条件也多种多样。地下采矿的井巷工程,不可避免地要在各种不同的工程地质和水文地质条件下进行。遇到地下水涌水量大时,大大地恶化了作业条件,降低了井巷掘进的速度,建井费用也将显著增多。如果发生灾害性水患,则将延迟矿山建设时间,大大推迟某些重点矿山的投产。对于已开采的矿山,地下水的危害依然很大。目前已投产的有色金属矿山,大约有20％受地下水的威胁,直接影响生产的就有十几个大、中型矿山。每开采
Our country has a vast territory, rich mineral resources and varied geological conditions. Underground mining underground engineering, inevitably in a variety of engineering and geological and hydrogeological conditions. Encountering a large groundwater inflow, greatly deteriorating working conditions, reducing the speed of tunneling, drilling costs will also be significantly increased. In the event of a catastrophic flooding, construction time will be delayed and some key mines will be postponed for a long time. Groundwater hazards are still significant for mined mines. At present, about 20% of the non-ferrous metal mines that have been put into operation are threatened by groundwater and there are over a dozen large and medium-sized mines that directly affect the production. Every mining