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白山水电站地下厂房边墙高,跨度大。据东北勘测设计院地质探洞实测资料,以及用平面弹性有限元法计算和平面全息光弹模型试验结果,当自重应力场侧压系数=O.33时,主厂房及主变室出现切向拉力区深度达1.5米,最大拉力值分别为2.7和5.4公斤/厘米~2,径向拉应力值为0.6公斤/厘米~2;由于爆破松动和变形松弛、地应力释放等原因,使围岩变形影
Baishan hydropower station underground powerhouse wall high, large span. According to the geophysical exploration data measured by the Northeast Survey and Design Institute and the results of plane elasticity FEM calculation and plane holographic photoelastic model test, when the lateral compressive coefficient of self-weight stress field = O.33, the tangential direction Rally zone depth of 1.5 meters, the maximum tensile values were 2.7 and 5.4 kg / cm ~ 2, the radial tensile stress value of 0.6 kg / cm ~ 2; due to loosening and deformation deformation relaxation, stress release and other reasons, so that the surrounding rock Deformation shadow