【摘要】 利用FLAC3D初步分析了不同埋深、不同地应力条件下以及同一埋深、同一地应力条件下地震波的入射方向对地下岩体洞室的影响。分析结果表明,在埋深为200 m时,侧压系数为2和侧压系数为2,不同埋深两种条件下,位移响应均随入射角的增大而先减小后增大;在同一埋深、不同地应力条件下,当侧压系数<1,随地应力和入射角的增大,位移先增大后减小,侧压系数>1时,相反。更多还原

【Abstract】 The primary analysis of different incidence propagation on dynamic response of underground rock cavern under earthquake is analyzed in the present paper by finite-difference program FLAC30.It is reported that the cavern displacement will decrease then increase with the increasing incidence angle(different incidence propagation from horizontal propagation to vertical propagation),and the influences of cavern incidence angle tend to decrease with the increasing depths and in-situ stress side pressure coefficient.In addition,the response of cavern in orthogonal is larger than that of non-orthogonal,and the response of cavern under directly wave is larger than that of lee wave.更多还原