广州抽水蓄能电站地下厂房开挖的有限元分析

FEM Analyses of underground Excavation for Guangzhou Pumped-storage Power Station

本文根据实测地应力值回归获得的地下厂房区大范围的地应力场,分析了广州抽水蓄能电站地下厂房开挖时的围岩应力场及位移场,并对洞室围岩稳定性进行了评价。它是根据“广州抽水蓄能电站厂房区地应力测定及分析”一文(见《长江科学院院报》1988年第4期)提供的方法,在工程上的具体应用。

Measurement and analyses of ground stress by Finite Element Method was recently described for studying the underground excavation in the Guangzhou Pumped-storage Power Station (Gong Bixin et al, Journal of YRSRI, No. 4, 1988). In order to apply these results to actual engineering, this paper further analyzes the stress and displacement fields of the adjoining rock when excavating underground powerhouse in accordance with additional measued values of ground stress and evaluation is made on stability of adjoining rock for cavity.