On the basis of the thin plate theory, the cusp catastrophe model of water outburst at vertical shaft floor could be set.
在薄板理论的基础上，建立了立井井筒底板突水的突变模型。
The minimum theoretical safe thickness of the water-resisting layer at shaft floor was obtained according to the analysis of the catastrophe. The computed result tallied with the actual situation.
运用突变理论的分析方法，求得了井筒底板隔水层的最小理论安全厚度，这与典型案例实际情况基本相符。
Our damp clothes dried. We spread the picnic cloth on the floor of the mine shaft, away from the edge of darkness.
我们的湿衣服干了，就在矿井里在远离黑暗边缘的地面上摊开了野餐布。
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