Based on analysis of sedimentary facies of coal measures in Tiefa mining area, the erosion zones in the coal seam No.4 in Dalong mining area ar...

• 在对铁法矿区煤系沉积相分析的基础上,利用煤层顶板砂体等厚图对大隆井田4%23煤层中的冲刷带进行了预测;揭示了铁法矿区煤层冲刷带的总体分布规律。