Reason analysis of stator core loose and tooth fracture in hydroelectric generator and prevention 水轮发电机定子铁心松动和断齿原因分析及预防无铁心电子感应加速器
The hydrogeologic characteristics of the area is researched. The groundwater is divided into pore phreatic water in loose rock mass, fault pore-fracture water, karst fracture water and fracture water. 依据地下水含水介质及类型,将地下水分为松散岩类孔隙潜水、断层破碎带孔隙裂隙水、岩溶裂隙水和裂隙水;
Synovectomy of the posterior compartments of the knees was performed in 7 cases, loose body removal was in 6 cases, PCI, reconstruction was in 4 cases, reduction and fixation of PCL avulsion fracture was in 2 cases. 行膝关节后室滑膜切除术7例,游离体取出6例,PCL重建术4例,PCL撕脱骨折复位固定2例。
Thixotropic cement is a cement slurry system used for cementing operation suited to the loose formation with small fracture pressure gradient and thief zone and it has a certain effectiveness in preventing the breakthrough of gas in the setting process of cement slurry. 触变性水泥是一种适用于破裂压力梯度较低的松散地层、漏失层及挤水泥等注水泥作业的水泥浆体系,它对防止水泥浆凝固过程的气窜问题同样具有一定效果。
Occurrence have basalt empty fracture water, loose rocks of porewater and granite weathering fracture water. 赋存有玄武岩空洞裂隙水、松散岩类孔隙水和花岗岩风化裂隙水。