由于矿业活动都有特定的寿命期，矿业活动结束后恢复环境的任务十分繁重。因此，在矿业活动的始终都要重视环境问题，为矿山环境的恢复创造有利条件。
煤矿采空区地面沉陷是永城矿区典型、突出的矿山地质环境问题。
The surface subsidence above coalmine gob area is a typical and serious geological environment problem in Yongcheng mining area.
辽宁省是我国重要的矿业大省和重工业基地，矿山地质环境问题尤为突出。
Liaoning Province, an important center of mineral and base of heavy industry of China, has more problems in mine geo-environment.
目前四川省矿山地质环境问题日益突出，做好矿山地质环境保护与治理工作，是当务之急。
At present, mining geological environment of Sichuan Province is getting worse and worse. Geological environmental protection and control have become the most pressing matter of the moment.
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