According to the analysis for failure reasons of vertical shaft wall in Linhuan Coal Mine, its main reason is longitudinal load produced by negative frictional force.
分析临涣煤矿区竖井井壁破坏的原因，主要是由负摩擦力产生的纵向荷载引起的。
Formulae for computing the longitudinal load distribution factors are derived on the basis of parabolic load distribution and the factors are calculated with the curves plotted.
本文根据载荷沿齿向按二次抛物线分布的规律导出了齿向载荷分布系数的计算式，并由此给出了该系数的数值及相应的曲线。
Formulae for computing the longitudinal load distribution factors are derived on the basis of parabolic load distribution and the factors are calculated with the curves plotted.
本文根据载荷沿齿向按二次抛物线分布的规律导出了齿向载荷分布系数的计算式，并由此给出了该系数的数值及相应的曲线。
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