赵各庄矿闭坑地下水安全警戒水位控制研究

针对闭坑矿井对相邻生产矿井带来的水害隐患问题，为保障赵各庄矿闭坑后邻矿生产安全的需要，提出安全水位和警戒水位的概念，并利用数值模拟方法对闭坑矿井区域地下水流场演变过程进行研究。结果表明：矿井关闭后，地下水位上升，含煤岩系含水层内水位降落漏斗逐渐减小，水位回升速度随矿井关闭时间的增加而减慢，经过三年时间两矿边界处水位达到安全水位-570m|为保证林西矿的安全生产，根据矿井水位回升情况及矿井边界煤柱破坏情况，确定了-575m为警戒水位，当考虑利用邻矿林西矿排水控制赵各庄矿井内水位始终低于警戒水位时，此时林西矿需要增加的排水量约为12.5m/min。研究结果为邻矿防治老空水提供了依据和参考。

Study on groundwater safety warning water level control in Zhaogezhuang closed pit mine

In view of the hidden danger of water disaster caused by the closed pit to the adjacent production mines, in order to ensure the production safety of the adjacent mines after the closed pit in Zhaogezhuang mine, the evolution process of groundwater flow field in closed pit mine area is studied by numerical simulation method, and the concepts of safe water level and warning water level are put forward：After the mine is closed, the underground water level rises slowly, the water level depression funnel in the aquifer decreases gradually, and the speed of water level recovery slows down with the increase of mine closure time. After three years, the water level in the mine reaches the safe water level of - 570m；In order to ensure the safety production of Linxi mine, according to the recovery of water level and the damage of mine boundary, the warning water level of - 575M is determined，when it is considered that the water level in Zhaogezhuang mine is always lower than the warning level by using the drainage of Linxi mine, the increased drainage of Linxi mine is about 12.5m3/min. The results provide basis and reference for the prevention and control of old air water in adjacent mines.