求翻译：郭二庄煤矿开采历史悠久，以往主采上组2#煤层。近年来，上组煤层资源枯竭，浅部的生产开采系统处于闲置状态，急需解放下组可能受奥灰水害威胁的9#煤资源，为了确保矿井的稳定安全生产，对9#煤开采时的突水情况很有必要进行研究与可行性评价。是什么意思？

Guo two coal mine exploitation has a long history in the past the main coal mining on the set of 2 #. In recent years, the group of coal resources depleted, shallow mining production system is idle, the next set of much-needed liberation water damage may be affected by the threat of Ordovician limes

Guo 2 Zhuang coal mining has a long history in the past the group main 2# coal seams. In recent years, the depletion of resources, and in the shallow waters receded Group in production mining system is idle, and there is an urgent need liberation may be affected by the next group of Olympic gray wat

The Guo two village coal mine mining history is glorious, the former host picks the group 2# coal bed.In recent years, on the group coal bed resources depletion, the shallow production mining system was at the idle condition, under the urgent need liberation the group possibly receives the Austria a

Guo Erzhuang coal mining has a long history, group 2# on the main mining seam in the past. In recent years, the Group on coal bed methane resource depletion, shallow mining production system in an idle state and need liberation group may 9# from Ordovician limestone water disaster threats under coal

Guo Erzhuang coal mining has a long history, group 2# on the main mining seam in the past. In recent years, the Group on coal bed methane resource depletion, shallow mining production system in an idle state and need liberation group may 9# from Ordovician limestone water disaster threats under coal