多因素作用下隔河岩电站厂房高边坡变形机理及岩体稳定性研究

以有限元计算程序ADINA为平台,建立隔岩电站厂房高边坡的三维模型。基于卸荷岩体力学理论与方法,综合考虑了初始工况、开挖工况、卸荷工况、加固工况、蓄水工况和蠕变工况,在应力分析和变形分析的基础上,研究了多因素作用下隔河岩电站厂房高边坡的变形机理和岩体的稳定性,并绘出高边坡的变形机理图。为对分析的合理性进行验证,将蠕变工况的计算成果与监测成果进行对比,在验证合理性的基础上进一步对边坡的后期变形进行预测。同时,结合上述分析的成果,提出监测布置的建议。

Studies on deformation mechanism and rock mass stability of high slopes of Geheyan Power Station under multiple factors

Through the finite elemental program of ADINA, a three-dimensional model of high slopes of Geheyan Power Station was established. Based on the unloading rock mass theory, the primary situation, excavation situation, unloading situation, reinforcement situation, sluice situation and creeping situation were considered. On the basis of the stress analysis and deformation analysis, the deformation theory and the stability of rock mass of the high slopes of Geheyan Power Station under the condition of several factors were studied. And then the function on distortion of the slopes were found. Compared with the monitoring results, the validity of analysis was proved, and further deformation of the high slopes was predicted. Meanwhile, some suggestions for the monitoring disposal based on the analytical results were given.