Mechanism and Measures Research on the Crown Overbreak in Yebatan Hydropower Project's Main Transformer Room
In response to the crown overbreak in the main transformer room in Yebatan Hydropower Project,from its physical and mechanical properties of the collapsed rock mass,combined with factors such as geostress,faults,groundwater,and construction disturbance,in-depth research is conducted on the collapse mechanism and engineering treatment measures.The research results indicate that the mechanical properties of the collapsed rock mass are significantly weakened compared to the original rock mass,and the bearing ca-pacity of the rock greatly weakened;the crown overbreak was resulted from the combined effects of weakened rock mechanics,faults,high ground stress,groundwater,and strong excavation disturbance;Comprehensive governance measures proposed in this article include the collapse cavity itself and the surrounding rock mass,with clear spatial hierarchy from near to far,strong targeting,and can provide reference significance for simi-lar projects.
Underground cavernsMain transformer roomCrown overbreakAltered rockStability of sur-rounding rockGovernance measures
万方数据
维普
