Because of the mining of coal, the aquifer structure is destroied, the change of hydrologic cycle occurs, and the hydrochemistrical factes have a lack of balance.

• 煤炭资源的开发、加工和使用又对自然环境造成改变和破坏，其原因在于煤矿开采时含水层结构被破坏、水循环规律发生改变以及水化学相平衡失调，使水环境发生变化。