煤矿专用充填巷合理位置确定及稳定性分析

Research on the reasonable location determining and stability analysis of the special filling roadway

研究了利用专用充填巷进行充填开采的工艺。根据理论计算确定专用充填巷应布置在裂隙带之中,并根据FLAC 3D模拟和煤矿地质条件确定专用巷的具体位置及稳定性。结果表明,距离顶板18m处岩层较稳定,岩层下沉较平缓较小,离工作面较近,向下打钻孔时经济合理,因此将专用充填巷布置在18m处。理论分析、数值模拟结合现场地质条件确定专用充填巷位置的研究方法是一种行之有效的方法。

The author researched the backfill mining technology which took advantage of special filling roadway. On the basis of the oretical calculation, the special filling roadway should be set in the fissure zone; then according to the simulation of FLAC 3D and the geological condi- tions of coal mine, the specific location and stability of the roadway were confirmed. The re- search results showed that the rock stratum was more stable 18 m away from roof, where the values of strata subsidence was less and the location was closer to working face, so it was more e- conomic and reasonable. The research method including theoretical analysis, numerical simula- tion and geological conditions research was an effective way to confirm the location of special fill- ing roadway.