摘要
以某水电站闸门竖井为研究对象,建立了三维有限元模型。采用Mohr-Coulomb屈服准则,模拟了软岩中竖井的开挖及其支护体系,详细比较了不同支护措施下软岩的等效塑性应变与塑性区、软岩的变形及支护结构的应力等,得知在软岩中开挖竖井时宜选用衬砌混凝土作为主要的支护手段,锚杆可作临时支护。
Based on the gate shaft of a hydropower station,a three-dimensional finite elements model was established. Based on ABAQUS software,Mohr-Coulomb failure criterion was used to simulate the process of excavating and supporting in soft rock of the shaft,a detailed comparison of the equivalent plastic strain,plastic zone and deformation in soft rock and the stress in the support structure were carried out.The results show that the concrete lining should be used as the main measure of support in the process of shaft excavation in soft rock and bolts can be used for temporary support.
出处
《人民黄河》
CAS
北大核心
2018年第2期131-134,共4页
Yellow River
关键词
闸门竖井
软岩
开挖支护
等效塑性应变
应力与变形
衬砌混凝土
gate shaft
soft rock
excavation and support
equivalent plastic strain
stress and deformation
concrete lining
