10kV油纸电缆与交联电缆接头工艺中采用热缩电缆附件的尝试

论证了油纸电缆与交联电缆过渡接头采用热缩电缆附件的可行性。根据市场现有的热缩附件设计了过渡接头工艺,介绍了该工艺在工厂供电供电生产实践中的应用情况。     

交联聚乙烯电缆与油浸纸绝缘电缆对接工艺在鞍钢的应用

在鞍钢电网中，绝大部分电缆是老旧的油浸纸绝缘电缆。为适应生产需要，有时需要将它与具有很多优点的交联聚乙烯电缆对接使用。鞍钢供电厂有关人员经过努力，试验成功了两种电缆的对接工艺。该工艺具有简单可靠、制作时间短、质量好等特点，制成后可立即进行耐压试验和接引送电。推广应用后，经济效益和社会效益显著。     

6 kV变频电缆终端头的制作与安装

本文结合某铝带材热连轧机组现场安装实例，详细介绍6kV变频电缆终端头的制作与安装过程。     

单芯交联电缆户内终端烧毁事故的分析

通过对一起35kV单芯交联电力电缆户内终端烧毁事故进行原因分析,介绍了修复过程,并提出改进办法和应吸取的经验教训。     

一起110 kV干式电缆终端头放电短路事故的思考

通过对一起110 kV干式电力电缆终端放电事故进行原因分析,介绍了修复过程,并提出改进办法和应吸取的经验教训。     

10kV热缩电缆接头工艺的改进

结合电缆头的安装经验，从理论上分析了热缩接头中应力管的工作状态，指出在１０ＫＶ及以下热缩电缆接头安装工艺中取消应管的建议是可行的，既能简化安装工艺，又可降低成本 。     

Using TDR Cables and GPS for Landslide Monitoring in High Mountain Area

Time domain reflectometry (TDR) is performed as a complement to the monitoring methods in subsurface deformation in slope together with the global positioning system (GPS) to monitor ground deformation of high-altitude landslides in Li-shan. Four TDR cables were installed in drill holes near the monitoring stations in the landslide area. According to the recorded TDR waveforms, there were shear and tensile zones under the B-5, B-9, C-1, and C-2 stations. A comparison of the TDR waveforms with the monitored data and boring log revealed that the subsurface sliding occurred between layers of colluvium and strongly weathered slate. Three GPS receivers were installed to measure ground displacement in the landslide area. The results from the GPS were compared with the surface extensometers data on-site. The two initial baseline lengths were 451,188.10 and 908,212.4?mm, respectively. The optimal data reduction achieved used a 3?h session with moving average for each hour’s GPS data. The standard deviation values of the GPS were 2.16 and 2.44?mm, respectively, on-site. The results of TDR and GPS measurements showed their applicability in the deformation monitoring of high-mountain landslides.     

Estimation of Tension in Cables with Intermediate Elastic Supports Using Finite-Element Method

Cables with intermediate elastic supports are widely used in bridge engineering, but there is a lack of effective methods for estimating the tensions in these cables. In this paper, an analytical form of the equilibrium equation for a tension bar has been used to provide a shape function to develop a suitable finite-element model for a cable. A program for estimating the tension in cables with intermediate elastic supports has been developed in which the bending stiffness of the cable, the stiffness of the end restraints, and the stiffness of the intermediate supports are taken into account by using this element and MATLAB. The program has been verified by comparison of the results from laboratory experiments. The method has been applied to compute the tension in the tie bars of a concrete-filled steel tube arch bridge. This demonstrates that the cable tension estimated by the present method is suitably accurate.     

应用高压检流计法寻测电缆故障

目前国内比较先进的电力电缆故障探测仪器，能探测出绝大部分电缆故障。用高压“检流计”法能解决这类仪器不能探测出的某种疑难故障，本文介绍了一则应用实例。     

Ends and means of experimental aesthetics.

Discusses the methods and tasks of experimental aesthetics with special reference to the relations between verbal judgments and measures of nonverbal behavior. Data on the motivational effects of complexity illustrate some of the methodological and substantive problems. Questions of intercultural consistency, the dimensional structure of verbal ratings, and the relations between verbal evaluations and exploratory behavior are examined. (French summary) (64 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

超大型回转体工件外圆及端面的车削

针对龙首矿双矿车翻车机回转体车削加工的难题进行较为全面的论述。介绍翻车机回转体的结构特点、使用方式及其要求,论述回转体的切削加工途径和问题,建立整体车削加工体系,并从原理和技术参数两方面对方案的可行性进行论证,指出该方案的优缺点,得出了该整体车削方案切实可行的结论,为此类工件车削找到了一条有效的途径,并对提出的新见解进行讨论。     

Auto CAD环境中作图法对平面连杆机构运动分析的探讨

通过对 Auto CAD软件所具备的几何精确作图功能和矢量运算功能的研究 ,探讨在 Auto CAD软件中以作图法对平面连杆机构进行运动分析的新方法 ,进一步开发 Auto CAD软件的辅助设计功能。     

Vibration Control of Stay Cables of the Shandong Binzhou Yellow River Highway Bridge Using Magnetorheological Fluid Dampers

The Shandong Binzhou Yellow River Highway Bridge is a three-tower, cable-stayed bridge in Shandong Province, China. Because the stay cables are prone to vibration, 40 magnetorheological (MR) fluid dampers were attached to the 20 longest cables of this bridge to suppress possible vibration. An innovative control algorithm for active and semiactive control of mass-distributed dynamic systems, e.g., stay cables, was proposed. The frequencies and modal damping ratios of the unimpeded tested cable were identified through an ambient vibration test and free vibration tests, respectively. Subsequently, a series of field tests were carried out to investigate the control efficacy of the free cable vibrations achieved by semiactive MR dampers, “Passive-off” MR dampers and “Passive-on” MR dampers. The first three modal damping ratios of the cable incorporated with the MR dampers were also identified from the in situ experiments. The field experiment results indicated that the semiactive MR dampers can provide significantly greater supplemental damping for the cable than either the Passive-off or the Passive-on MR dampers because of the pseudonegative stiffness generated by the semiactive MR dampers.     

重金属污染的危害与防治

论述了重金属污染的来源、特点、及对动植物特别是人类健康的危害．并简述了重金属污染的防治办法。     

西柳沟泄洪对包钢造成的危害及其对策

包钢生产、生活用水主要取自流经包头的黄河昭君坟河段 ,由于近年黄河流量减少及西柳沟的影响 ,泥沙剧增 ,取水口多次被淤 ,严重影响了包钢的生产和市区人民的生活。本文主要介绍了黄河支流西柳沟洪峰对包钢黄河水源地的威胁以及为确保生产和生活包钢所采取的各项措施