ANALYSIS OF CRACKS IN XIAOWAN ARCH DAM DURING INITIALCONCRETE PLACEMENT

摘要

During the initial period of concrete placement for Xiaowan Arch Dam, 16 cracks arefound in 6 monoliths. This paper analyzes the cause of cracks in 6 aspects: raw material andmixture property, concrete quality, temperature stress, concrete block shape, release relaxationdeformation due to excavation, and consolidation grouting, stating that consolidation grouting andbedrock release resilience deformation are the major causes, and providing case-specific remedymeasures.