重污染地区的合成绝缘子憎水性能研究

目前，合成绝缘子已经在我国各种不同类型的中等和严重污染环境下得到广泛应用。随着运行时间的延长和合成绝缘子表面的长期积污，其憎水性能将会有所改变。对在我国东北地区佳木斯电网中运行了近10年的40余只110kV的硅橡胶合成绝缘子按国际通行方法进行了全面的外观检测、等值盐密(ESDD)、等值灰密(NsDD)测试和憎水性能评估等4个方面的研究。试验取得了大量的研究数据，并发现了一些规律。     

山西电力主网脉冲编码调制网管系统建设方案

分析了目前的山西电力主网PCM(脉冲编码调制)网管系统,描述并指出传统SAGEMPCM的网管方式及其缺点,提出了新型SAGEM PCM网管系统的硬件和软件结构,并给出具体的实施方案。     

YT62型液力偶合器故障分析及处理

针对YT62型液力偶合器在实际运行过程中经常出现的泵轮侧推力轴承温度偏高、泵轮和涡轮侧推力瓦块烧毁以及泵轮叶片断裂等故障进行分析及探讨,提出了改造偶合器泵轮侧推力瓦块定位盘,扩大泵轮侧径向推力轴瓦中分面的油槽通流面积,在断裂的泵轮叶片最接近180°对称的叶片上挖去和断裂叶片大小相同的部分,将转子动平衡校验后回装等处理方法和改进措施。改进后的实际运行效果表明,设备安全可靠性得到了很大提高,运行良好。     

养老院老人摔倒求助视频检测系统

随着社会的发展,我国人口老龄化越来越严重,因而增多了关于养老服务的需求。但目前很多养老机构的管理不规范,设备老旧不智能,没有跟上时代的步伐。老年人一旦发生意外情况,很难及时发现和救助。对此,文章提出一种老人摔倒求助视频检测系统,系统由一个微型计算机以及其自带的摄像头和一台上位机构成,通过摄像头对养老院老人进行拍照,微型计算机将拍摄的照片上传至上位机,在上位机中设计一个卷积神经网络模型用于检测老人是否摔倒和求救,便于及时提醒监护人施以援手。     

Reynolds-Averaged Navier-Stokes Equations Describing Turbulent Flow and Heat Transfer Behavior for Supercritical Fluid

Supercritical fluid has been widely applied in many industrial applications.The traditional Reynolds-averaged Navier-Stokes(RANS)equations are directly applied for turbulent flow and heat transfer of the supercritical fluid,ignoring turbulent effect of the thermal physical properties due to the intense nonlinearity.This paper deduces a set of Reynolds-averaged Navier-Stokes equations for supercritical fluid(SCF-RANS equations)to depict turbulent flow and heat transfer of the supercritical fluid taking all the physical parameters as variables.The SCF-RANS equations include many new correlation terms due to fluctuation of the thermal physical properties.Model methods for the new correlation term have been discussed for closing the SCF-RANS equations.Some of them have relatively mature models,while others are completely new and need profound physical theoretical analysis for proposing reasonable models.This paper provides referable information for these new correlations as far as authors know.The SCF-RANS equations not only provide the formulation special for flow and heat transfer of the supercritical fluid,but also represent the most sophisticate form of the RANS equations,for every involved physical property has been considered as variable without any simplification.     

长螺旋压灌扩底桩新施工工艺特点及工程优势浅析

普通钻孔灌注桩在施工过程中常造成倾斜过大、断桩、偏移、钻孔偏斜、桩承载力低、颈缩、孔壁坍塌和孔底沉渣等工程问题。通过对普通钻孔灌注桩施工工艺和长螺旋压灌扩底桩新施工工艺进行对比分析,对长螺旋压灌扩底桩的同步技术、振捣插筋逆作法、特制扩底钻头扩底技术、钻孔成桩一体化和压力灌注进行阐述,总结出长螺旋压灌扩底桩新施工工艺应用于工程中具有成桩质量好、经济性好、单桩承载力高、施工效率高和适用性好等工程优势。     

全日制学科教学（英语）专业课程群建设研究

课程群建设是当前高等教育课程体系改革的重要内容,构建学科教学（英语）专业的课程群具备一定可行性,其具有课程内容交叉融合度高、实践教学环节丰富、适应专业发展需求等特征。为进一步提高学科教学（英语）专业研究生的培养质量,探索新形势和新要求下学科教学（英语）专业的发展路程,需要从教学大纲、教学内容、教学理念、教学资源等方面进行专业课程群构建。     

极坐标测量法在宝珠寺电站大坝变形监测中的应用

随着红外测距技术、电子全站仪、程序计算器、PC-1500等微型计算机在工程测量中的应用,极坐标测量法日益受到重视,其在水利水电工程测量中的应用比较广泛。极坐标测量具有方便灵活、便于布点、便于计算、避免误差的积累和传递、速度快、经费省、困难少等优点。宝珠寺水电站右岸1~9号挡水坝段由于受地质和地形限制,采取了曲线布置,蓄水后的变形观测则利用了极坐标测量技术。介绍了利用极坐标测量技术对电站右岸1~9号挡水坝段测量的情况。     

Study on destructions and reinforcement measures of mined constructions

Ground movement and deformation caused by underground mining would destroy the constructions located within subsidence area. Constructions would suffer different destructions with different location. The effect of ground deformation caused by underground mining to constructions was analyzed. Analyzed the destructive types of constructions in different ground movement and deformation. Taking a two-storey building for example, the walls were reinforced by computation before mining. To protect the construction the reinforcement measures to the construction before mining were studied.     

综放工作面损坏支架更换技术

介绍靖远煤业公司红会四矿综放工作面个别支架顶梁、尾梁、底座损坏后,采取现场逐架拆卸更换损坏部件的办法,及时有效的解决了综放面支架损坏给生产带来的影响,方法经济易行,为综放面支架更换提供了依据。