摘要
针对溪洛渡水电站地下厂房洞室群规模巨大,其中主厂房、尾调室跨度分别达到28.4 m和25 m这种情况.通过引进洞周松弛系数函数,提出了新的地下洞室围岩参数反演的计算思路和方法,对现场左右岸共10个典型剖面实测的监测资料进行了跟踪反馈和后期开挖预测预报分析.经过前1-10级的参数调整和反馈分析之后,对左右岸典型剖面的预测精度一般均能够达到较高的水平,说明了该方法在实际工程中的适用性.
The Xiluodu underground powerhouse cavern＇s scope is huge, and the main plant and the transformer room are 28.4m and 25.0m in span. Based on the relaxation coefficient function, a new calculation algorithm of the parametric regression of the surrounding rocks was presented to simulate the disturbance and relaxation phenomena of the surrounding rocks caused by excavation. Based on the above feedback analysis theory, the tracing feedback and prediction analysis of the staging excavation between the 1^st to 10^st excavation were performed. After the parameter adjustment and feedback analysis of the 1^st to 10^st excavation, the precision of the prediction of the typical sections can reach a satisfactory level, which proved the availability of this method in actual construction.
出处
《山东大学学报（工学版）》
CAS
北大核心
2009年第4期140-144,共5页
Journal of Shandong University（Engineering Science）
关键词
地下厂房
开挖
反馈
预测分析
underground powerhouse
excavated
feedback
prediction analysis
