大型地下洞室群开挖的施工预测解析与信息化管理

介绍了天荒坪抽水蓄能电站地下厂房洞室群施工预测解析与信息化施工管理的工程实例。工程开工后完全模拟洞室的开挖实况,进行了三维弹塑性有限元计算分析,预测了洞室开挖过程中围岩应力、位移和屈服范围的变化规律。根据计算结果及施工现场的观测结果,及时修正调整了施工期的支护参数,确保了工程的顺利完成。

Predictive Analysis and Observational Construction for aLarge-Scale Underground Powerhouse Cavern Complex

In this paper, the predictive analysis and observational construction for the large-scale underground powerhouse cavern complex in Tianhuangping pumped storage power station are presented. The predictive analysis was carried out in three dimensions by FEM that simulated the actual staged excavation procedures. The analysis provides the sufficient information on the deformation evolution and the potential yielding zones in the cavern rocks. Based on the analysis results and the geological observation as well as the during the construction, the design supporting parameters for the safety of the cavern rocks were adjusted timely. As a result, the anderground powerhouse complex was successfully constructed.