【摘要】 对于单体液压支柱工作面．选择支柱载荷作为顶板动态预报的基本参数．支柱载荷临界值确定为额定阻力的７０％．并按统计均值与０．８～１．２倍均方差之和进行调整．符合大多数工作面顶板动压显现规律．更多还原

【Abstract】 In individual prop face, it coincides with the sihowing pattern of dynamic lcading in mostfaces to select prop load as basic parameter of roof dynamic forecast and determine the critical valueof prop lcad equal to 70% rated load, moreover,to adjust with data that equal to statistical avevagevalue plus 0. 8 ～ 1. 2 times average variance.更多还原