【摘要】 以节理受力特性为出发点,基于FLAC3D软件平台,改进了Interface单元的法向刚度及切向刚度的输入取值方法,定义了节理参数的敏感度,并以含有一给定方向节理的某实际水电站地下洞室为背景建立了数值试验模型,根据场地条件输入人工地震波进行地震反应分析,探讨了对洞室围岩地震反应影响较大的节理参数,以期为含节理的地下岩石洞室动力稳定性分析提供参考。更多还原

【Abstract】 Based on the mechanical properties of a joint,the input method for normal and tangential stiffness about Interface element is improved in software FLAC3D.The sensitivities of joint parameters are defined.Taking an underground chamber of hydropower station with joint in a given direction for an example,the numerical test model is established.Artificial seismic waves are input for seismic response analysis in terms of the site conditions.It discusses the joint parameters that have more great influence on seismic responses of surrounding rock.Therefore,it is expected to provide reference for dynamic stability analysis of underground rock chambers with joints.更多还原