FHD-1数字化地磁观测系统常见故障维修及电源改进

主要介绍FHD-1分量质子磁力仪故障维修;通讯传输中的故障检修、UPS的检修及对供电系统的改进,分析了有关的电路及故障原因,并以实例对这些故障的检修进行了总结,提出了检修方法、步骤及改进措施。     

Application of human reliability analysis to repair & maintenance operations on-board ships: The case of HFO purifier overhauling

Maintenance and repair at the operational level is a critical function to comply with the standard of competence for officers in charge of an engineering watch in a manned/unmanned ship engine room. The human factor in ship maintenance especially deals with fulfilling of the required competency about dismantling, inspecting, repairing and reassembling equipment in accordance with manuals and good practice stated in STCW Code, as amended in 2010. This study extends the shipboard operation human reliability analysis (SOHRA) through the marine auxiliary machinery maintenance operations. The approach involves the determined marine-specific error producing conditions (EPC) and generic task type parameters to quantify generic error probability (GEP) values along with the subtasks of the maintenance operation. To acquire the EPC and GEP values, the real case study on heavy fuel oil (HFO) purifier overhauling considers different operating conditions on-board selected five ships in a dry bulk fleet. The case study shows that human error probability (HEP) values of tasks in maintenance operation change in regard to ship operating conditions. Consequently, the study contributes to the marine engineering field in improving the human factor in ship repair and maintenance operations. This approach is further extended by incorporating maintenance 4.0 requirements into ship operating environment to conduct scenario-based task analysis.     

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地理信息公共服务平台更新运维体系升级策略研究

通过对地理信息公共服务平台更新运维体系的解析,指出平台数据模型、更新机制及软硬件支撑环境等方面的局限,从空间数据时空化、运维体系智慧化的角度提出地理信息公共服务平台升级策略,为时空信息云平台建设提供重要参考。     

浅析国家地下水监测工程施工要点及注意事项

地下水监测工程的建设,将增加国家级地下水监测站网的密度,大幅度提升我国地下水监测水平,为水资源管理提供基础支撑,对实现经济社会可持续发展具有重要意义。本文主要就国家地下水监测工程(吉林省部分)施工要点及注意事项进行简要分析。     

智能电源系统在测震台网远程维护中的应用

探讨如何运用远程维护方式减少测震台网维护工作量的方法,并以野外台站智能电源系统为例,说明运用远程维护方式可以降低测震台网的维护成本,减少工作量。     

FHD-2B分量质子磁力仪维护技术

介绍FHD-2B分量质子磁力仪的基本原理与系统构成,及仪器日常检查的重要性与流程,着重介绍仪器常见故障的现象与原因,以及检修方法与流程。     

基于单片机的地震台站远程监控

针对当前地震台站的特点,提出一种基于TCP/IP通信的远程监控系统,介绍该装置的设计与实现方法,给出系统构成图、主要硬件电路及程序代码.通过样机试制与反复试验,该系统可以完成对地震台站设备工作环境的监测并能远程对数采等设备实现断电和重启等操作,可以为地震专业设备的可靠运行和及时维护提供保障和依据.     

数字地磁绝对观测若干问题探讨

结合全国地磁台网2008年的观测数据,研究了绝对观测中应该注意的问题,如D I仪操作的基本技术、基线值计算中软件的使用技巧和基线选定的方法,以及绝对观测仪器的维护等。     

包裹式加筋土挡墙在城墙修复中的应用

以南京市建宁路至挹江门段明城墙修复工程为例,介绍了包裹式加筋土挡墙在城墙修复中的应用。阐述了包裹式加筋土挡墙的作用机理、施工方法,并分析了作用效果。工程实例说明,在城墙内侧场地狭小、地基情况较差的情形下,采用包裹式加筋土挡墙护坡设计方案能够取得良好效果。