三维数值模拟技术在深部大型发电站厂房信息化施工中的应用  

3D NUMERICAL SIMULATION ON THE INFORMATION-ORIENTED CONSTRUCTION FOR THE DEEP UNDERGROUND HOUSES

作　　者：蒋宇静[1] 肖俊[1] 棚桥由彦 沟上建 宋振骐[3] 

机构地区：[1]长崎大学土木工程部 [2]九州电力株式会社 [3]山东科技大学,泰安271019

出　　处：《岩石力学与工程学报》2003年第6期957-964,共8页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然基金委员会海外杰出青年基金(50028403);九州电力株式会社合作研究经费资助项目

摘　　要：提出一种可以综合考虑围岩节理分布特性、爆破施工损伤以及施工过程的新三维快速数值仿真模拟技术,并将其成功地应用于日本宫崎县120×104 kW蓄能水力发电工程大型地下厂房的信息化施工中.依据多种测试手段,对开挖后围岩的稳定性和变形进行实时监测,并对数值模型进行三维反演分析和修正,比较准确地预测了围岩的动态变化过程,并对支护结构设计的可靠性和合理性进行了详细的论证.Modeling the effect of blasting-caused damage, anisotropy of rock masses and excavation sequence on deformational behaviour and stability of large-scale underground houses is important in the design and information-oriented construction of the pumped storage power plant. A powerful three-dimensional numerical method that can be applied for that purpose is presented in this paper. The influence of damage caused by blasting and discontinuities in rock masses on the stability of houses is considered by reducing the deformation coefficient E of the surrounding rock masses based on the relation to seismic velocity Vp. Numerical simulations of the underground excavation of the Omaru Pumping-up Hydroelectric Power Plant, which is one of the big construction projects in Kyushu island, Japan, were carried out to evaluate the influence of damage caused by blasting and reinforcement by rock bolts on the stability of powerhouses. The damaged range and mechanical properties of rock masses near to the walls of houses are determined by using the back analysis approach in which three lines of the measurement results during the arch part excavation process were used to verify the simulations. Finally, applying the improved model and properties of rocks, the house stability and reinforcement effect of the preliminarily designed support system are also estimated for the safety in the coming several bench excavation process.

关 键 词：发电站厂房 信息化施工 三维数值模拟 围岩 地下结构 支护 稳定性 

分 类 号：TV731[水利工程—水利水电工程] TV52