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考虑月球引潮力和昼夜温差效应的危岩稳定性分析

DOI: 10.3969/j.issn.1674-0696.2013.04.19, PP. 625-629

Keywords: 危岩稳定性,月球引潮力,昼夜温差效应,stabilityofperilousrock,lunartide-generatingforce,temperaturedifferencebetweendayandnight

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Abstract:

:?危岩稳定性是科学分析崩塌灾情的关键环节。根据天文固体潮理论,分析了月球引潮力造成危岩重力效应出现昼夜交替变化的特征,建立了危岩受月球引潮力作用的荷载计算方法;分析了昼夜温差效应对危岩主控结构面内充填物吸水膨胀特性的影响,提出了膨胀力计算公式;引入月球引潮力和昼夜温差效应膨胀力修正危岩稳定系数计算公式,实例分析表明,考虑月球引潮力和昼夜温差效应后,危岩的稳定系数可降低0.96%~6.73%,坠落式危岩劣化程度更为明显。研究成果对进一步实施危岩破坏机理研究有积极意义。

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