【摘要】 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。更多还原

【Abstract】 Taking astronomy and impact of temperature difference in one day into account,the mechanism of perilous rock is analyzed.According to solid tide theory,the characteristics that moon’s gravitation results in gravity of perilous rock changing between day and night are analyzed,and the calculation method of moon’s gravitation for perilous rock is also proposed.Furthermore,the effect of temperature difference between day and night on the characteristics of filling in control fissure expanding after sopping up is analyzed.Hereby,basing on the moon’s gravitation and swelling force of filling,the stability calculation method of perilous rock is revised.At last,taking Wanzhou Taibaiyan perilous rock as an example,the stability coefficients are calculated and the stability coefficients are reduced from 0.96% to 6.73%,considering the moons gravitation and swelling force of filling in control fissure.The research results are of positive significance for studying failure mechanism of perilous rock.更多还原