The cave's initial principalstress is tectonic stress, and the Max main stress's direction is perpendicular to the power house's stalk line.
洞室地应力以构造应力为主,其最大主应力方向与厂房轴线方向近垂直。
2
The time-history curve of stress, stress path and curves of the principalstress axes rotation of soil element under and beside the load moving line are presented.