From the characteristic of prop and actual conditions of coal seam and roof in Datai pithead, the support force of the dense prop in 揝ichuan Method?is calculated.

• 从单体液压支柱的特性出发,结合大台井实际的煤层和顶板条件,计算了俯伪斜走向分段密集采煤法密集柱的支撑力。