本文介绍了影响近煤层卸压带变化范围的因素;即煤厚增加使卸压带宽度增加;悬顶愈长卸压带宽度愈小;卸压带宽度随开采时间增大而增大。作者根据这些因素的各 项:刨煤机速度、刨煤进尺和采煤带宽度、原始卸压带尺寸、开采后的时间等參数绘制了诺模图,并根据此图选择刨煤机截煤时的参数。 In this paper, the factors that affect the variation range of relief zone near coal seam are introduced. That is, the increase of coal thickness increases the width of relief zone, the smaller the relief zone width is and the width of relief zone increases with the increase of mining time. According to these factors: plow speed, plow coal and coal belt width, the original size of the pressure relief zone, the time after mining and other parameters drawn nomogram, and according to this map to choose plow cut Coal parameters.