五阳煤矿7806工作面浊漳河下开采技术实践

Mining technology practice under Zhuozhanghe water body in 7806 working face in Wuyang coal mine

在对导水裂缝带高度实测数据分析的基础上,得到了综放开采导水裂缝带高度计算经验公式,通过选择合理的防水煤岩柱计算模型,计算了7806工作面河下开采安全煤岩柱尺寸,评价了河下开采的安全性,并对采后河床下沉和淹没范围进行了预测。开采实践证明,工作面实现了河下综放安全开采,地表水体未对井下工作面产生充水影响。

Based on analyzing the measured data of water flowed fractured zone, the empirical formula of the height calculation of water flowed fractured zone for fully - mechanized top coal caving was obtained. Waterproof pillar di- mension in 7806 working face was calculated by choosing suitable model, the safety of the mining was evaluated un- der the water body and the subsidence and submerged range of the riverbed after mining were predicted. Mining practice proved that fully - mechanized top coal safety caving was achieved in 7806 working face under river, and the surface water did not produce water to the working face.