Based on the tunnel shape, span and depth, the previous elliptical plate model and clamped beam model were modified.The modified model was applied to different situations. For the elliptical plate model, the water effects were considered. For the clamped beam model, water and horizontal stress were considered. Corresponding potential functions and cusp catastrophe models of rock system were established based on the catastrophe theory. The expressions of critical safety thickness were derived with necessary and sufficient conditions. The method was applied to the practical engineering. Some parameters related to the stability were discussed. The results show that elastic modulus and thickness are advantageous to the floor stability, and that the load, span,horizontal stress and water are disadvantageous to the floor stability.
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机译:营造安全文化 提升安全理念 精心打造三峡工程安全文化品牌Creating a Safety Culture,Promoting a Safety Idea and Elaborately Establishing a Safety Culture Brand for the Three Gorges Project
机译:safetyNet项目中的酒精安全绩效指标:选定国家的数据质量和与其他酒精指标的比较,(alfhol i safetyNet的Trafikksikkerhetsindikatoren - Datakvaliter i Utvalgte Land Og sammenligning med andre alkoholindikatorer)