Based on the special geological condition in 8# seam of Xiyu mine,an unsymmetric supporting form was put foreward and its characteristics were analysed.

• 针对西峪矿二采区8号煤断层与煤柱切割区的特殊地质地压条件,提出两侧柱子呈不对称“八字形”支护形式,并对其特点进行了深入分析