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本文系统地总结了海州露天煤矿非工作帮近40年来的62次滑坡资料，分析研究了沿弱层干面滑坡时的三维滑体空间形态。将岩体性质看作有空间变异的随机场，利用可靠性理论推导出了最危险滑体长度和三维可靠指标的计算公式，这些公式解释了沿弱层滑坡时滑体的长高比较大的原因，并可用于滑体长度及三维可靠指标的定量计算。
This paper systematically summarizes 62 landslides data of Haizhou open-pit coal mine non-working for nearly 40 years and analyzes and studies the space shape of the three-dimensional landslide along the dry-landslide with weak layers. Taking rock mass property as a random field with spatial variation, the formula of the most dangerous slide length and three-dimensional reliability index is deduced by means of reliability theory. These formulas explain that the length-height ratio of the slide body along the weak layer landslide is large Reason, and can be used for the length of the slide and three-dimensional reliable quantitative indicators.