由于场区地应力比较高，在开挖期间出现了局部围岩的大变形及岩爆、喷混凝土层剥落等不良现象。
Due to high in situ stress in the powerhouse area, important deformation of local surrounding rock, rock burst, shotcrete spalling occur during excavation.
开挖加固后，滑坡体局部和整体稳定性均有显著提高，结合排水措施，将更有利于保持其稳定性。
The local and whole stability obviously increased after excavation and reinforcement; if combined with drainage measures will be more conducive to maintaining.
同时还对局部倾斜桩、倾斜群桩及基坑开挖导致的局部倾斜桩的竖向承载力进行了分析。
What's more, bearing capacities of partially inclined piles, inclined pile-groups and partially inclined piles due to pit excavation are also studied based on the parameters from the back analysis.
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