论港口危险货物运输装卸作业安全问题

危险货物作业安全越来越受到人们的关注，从危险货物的分类谈起，分析了危险货物港口运输装卸作业中易引发事故的诸因素和安全作业中应特别注意的几个问题，强调从业单位、从业人员的资质、法律意识和业务素质，制定危险货物事故应急预案等。提出了加强港口危险货物安全管理的有关建议：开展危险源与事故隐患的多层次监控；推进港航危险货物企业建立安全质量标准化体系；创建“抓小放大”的安全管理机制。     

Discrete element approach for mine dump stability analysis

Mine overburden dumps have posed significant safety issues in the operations of various unit operations of open pit min-ing especially the external dumps. The external dumps are composed of a mixture of fragmented rocks and loose soil. Their charac-teristic is comparable to heavily discontinuous solid mass. The conventional approach of limit equilibrium methods provide safety factors for the slope but nothing about the stress-strain characteristics of the large dump mass. The designs of dump location and their respective geometry are integrated for the know-how of the stability characteristics of these dumps. The discrete element method uses a circular disk to represent the granular solid mass and their interactions are described by the Newton's third law of motion. The displacement is described by the sliding of the circular disk. This work is focused on the modeling efficiency of the discrete element methods to represent the behaviour of mine dump masses with the specified joint plane for the limit equilibrium method. The advantage of the work lies on the ease of information retrieval at any point at the dump mass concerning the stress and strain histories, displacement, failures etc. which when integrated produces a better understanding of the stability of the dump masses.     

深基坑工程安全评价的尖点突变模型

为评价深基坑工程失稳的突变特征,采用突变理论建立了深基坑工程尖点突变安全评价模型.根据工程安全监控理论,引入突变理论,以基坑水平变形为例,考虑深基坑土体的流变特性,建立了基于时效影响因子的深基坑工程尖点突变安全评价模型.实例分析表明,尖点突变安全评价模型克服了采用常规设置监控值评价时参数选择困难,并能反映基坑失稳突变性的特点,可以量化评价基坑安全程度,正确评价安全状态,具有适应性强、精度高的优点.     

关于构建长庆油田生产建设和谐安全监管的思考

通过对长庆油田生产建设和谐安全监管意义的思考,分析当前在生产建设中存在的不和谐因素,指出构建和谐安全监管的切入点,进而提出构建长庆油田生产建设和谐安全监管的建议。     

基于EPON技术的矿用综合数据接入网关设计

针对煤矿监测监控系统数据接口众多,无法实现数据的统一通信和共享的现状,结合EPON技术的优势,设计了一种基于EPON技术的矿用综合数据接入网关。该网关可实现煤矿井下不同接口数据的综合接入和不同系统之间的数据共享。井下实际测试结果表明,该网关主干网络通信速率达到了750Mbit/s,主干网络传输距离达15km,线路冗余切换时间小于100ms。     

副井提升系统安全回路及上位机优化改造

针对煤矿副井提升系统安全回路软硬件及上位机中存在的不足进行了优化改造,改进了过卷试验方式,将闸系统紧停信号引入安全回路,并将安全回路各节点状态信号引入RSView32人机界面,实时显示安全回路状态;根据现场检修需要,在上位机增加了复位显示功能及行程偏差大报警信号。实际应用表明,该优化改造可迅速定位故障节点,实现软硬件互查。     

变电站综合自动化系统的安全措施

分析变电站综合自动化系统中测控装置和监控装置分别在出现故障情况下所需要采取的必要的安全措施,以保证综合自动化系统的正常运行。     

电子信息产品数据安全隐患探究

随着信息应用水平的提高,以及网络普及程度的加深,电子信息产品也逐渐地走入人们的生活,给人们带来了许多的方便。但是电子信息产品也面临一系列的数据安全隐患,数据和信息一旦泄露,会给国家、机构、个人造成不小的损失。因此,必须对电子信息产品的数据安全隐患进行探究,并且采取强有力的措施来进行预防。笔者根据实际情况,针对电子信息产品数据安全隐患进行了分析,希望能为广大的相关工作者提供一些参考依据。     

基于Word2Vec词嵌入和聚类模型的安全生产事故文本案例分类

安全生产事故的分析对应急管理能力提升具有重要意义.通过对安全生产案例的语义分析,利用Word2Vec词嵌入技术和聚类模型,选用CBOW+负采样技术实现词向量,并结合安全生产事故案例分类的数据特点,通过基于半监督学习的聚类模型算法,根据事故性质的认定特点,提出了一种优化初始聚类中心的算法,并利用K-means聚类算法实现安全事故文本案例的分类.实验表明该方法较好实现安全生产的事故案例分类,并对安全生产事故的多个维度分析具有很好借鉴意义.     

Predicting and controlling risks from human exposures to vibration and mechanical shock: flag waving and flag weaving

At work or in leisure activities, many people are exposed to vibration or mechanical shocks associated with risks of injury or disease. This paper identifies information that can be used to decide whether there may be a risk from exposure to hand-transmitted vibration or whole-body vibration and shock, and suggests actions that can control the risks. The complex and time-varying nature of human exposures to vibration and shock, the complexity of the different disorders and uncertainty as to the mechanisms of injury and the factors influencing injury have prevented the definition of dose–response relationships well proven by scientific study. It is necessary to wave a flag indicating when there is a need to control risks from exposure to vibration and shock while scientific enquiry provides understanding needed to weave a better flag. It is concluded that quantifying exposure severity is often neither necessary nor sufficient to either identify risks or implement measures that control the risks.Practitioner Summary: The identification of risks associated with exposure to vibration and mechanical shock cannot, and need not, rely solely on the quantification of exposure severity. Qualitative methods can provide a sufficient indication of the need for control measures, which should not be restricted to reducing standardised measures of exposure severity.