工作面奥灰水治理关键技术及效果评价

Key Technologies and Effect Evaluation of Ordovician Limestone Water Treatment in Working Face

针对某煤矿工作面受水害影响,本文通过理论分析、井下实测施工、效果验证治理奥灰水突水,采用通道注浆和盖帽注浆的手段防水,并评价防水效果。结果表明,防隔水煤柱的宽度为44.15 m,在回采层底板的作用下,帽体与通道中的水泥填料结合在一起,水位从最初的182.14 m3/h降低到了32.43 m3/h。

In view of the impact of water damage on a coal mine working face,this paper through theoretical analysis,underground field measurement construction and effect verification,the control of Ordovician limestone water inrush was carried out.Channel grouting and cap grouting were used to waterproof,and the waterproof effect was evaluated.The results show that:The width of the water-proof coal pillar is 44.15 m.Under the action of the stope floor,the cap body is combined with the cement filler in the passage,and the water level is reduced from the initial 182.14 m3/h to 32.43 m3/h.