共查询到20条相似文献,搜索用时 171 毫秒
1.
受限空间作业由于其作业特点,易发生中毒窒息事故。该文采用事故树分析法,通过对近几年事故的调查和分析,得出事故树的13个基本事件。根据其结构重要度的排序,对事故发生影响最大的基本事件,提出针对性的改进意见;对其他基本事件,提出相应的预防措施,有助于降低受限空间中毒窒息事故发生的概率。 相似文献
2.
为帮助海岛爆破工程科学系统化的作业,运用事故树分析法对海岛爆破飞石事故的产生原因进行了分析,建立了爆破飞石事故树图,求出最小割集13个,最小径集8个,得到了基本事件的重要结构度值。结果表明:爆破方案审核不严、现场管理不当等问题是造成海岛爆破飞石事故的主要原因,针对这些基本事件提出了4点预防爆破飞石事故的对策措施,为今后的海岛工程爆破系统作业提供了决策支持。 相似文献
3.
4.
5.
6.
近年来,我国煤矿采矿作业事故频发,引起了社会的广泛关注本文主要分析发生事故的原因及防范措施,队确保作业安全,促进和谐社会的进步与发展。 相似文献
7.
8.
对机坪事故运用事故树进行定性分析后,再对引起基本事件的人为失误原因进行分类,最后利用动态灰色关联方法分析这些人为失误因素的影响程度。某机场实例研究得出,该机坪事故的人为失误主要原因为组织管理和个人原因。此研究得出的理论依据对完善和改进机坪安全管理有针对性的实用意义。 相似文献
9.
提供了一种有效的算法,根据输入的各种事件的基本信息及其因果逻辑关系,利用树的深度优先遍历后序算法,实现事故树的自动绘制,体现事故树模型分析形象、直观、明了的特点.该算法能即时计算出事故树顶事件发生的概率、最小割集、概率重要度、关键重要度等参数,为对事故树进行定性、定量分析提供强有力的图形和数据支持. 相似文献
10.
11.
12.
Kletz TA 《Journal of hazardous materials》2007,142(3):618-625
Whenever we hear of an accident elsewhere we are eager to learn what happened and what recommendations have been made to prevent it happening again. However, we can learn as much from past accidents that have been forgotten or were never widely reported. Some such accidents are described, including entry to confined spaces, the collapse of a gasholder and the collapse of a tank for an unusual reason. 相似文献
13.
This is a 3-month prospective study aimed at determining the incidence and causes of home accidents in an Ankara military staff resident with 637 households. The study also determined risk factors in the home environment and the families' need of health education. Of all families, 1.5% were exposed to home accidents and the incidence of home accidents was found to be 0.104/person/years. Among the accidents, falls were most common at 44%, whereas cuts constituted 22% and burns 19%. About one quarter of the interventions made by mothers for epistaxis and poisoning (by gasoline, acetone and bleach) were found to aggravate the problems, whereas three quarters of the adults came up with practicable solutions. Well-educated mothers acted better than mothers with less schooling. 相似文献
14.
目的解决荔枝冷藏运输环节中安全风险识别及定性分析的难题。方法基于因素空间及故障树分析模型(FTA),分析荔枝冷链运输环节的安全事件集、空间结构(工位)集和简约因素集,建立荔枝冷藏运输环节风险因素关系矩阵,通过矩阵运算获取不同空间结构下荔枝运输安全事故发生的基本事件。结果根据运算求解结果,构建荔枝运输环节的故障树模型,获取了运输环节故障树的最小割集。荔枝冷藏运输事故最小割集数为13个,并分析了各个基本事件的结构重要度。结论通过研究最小割集及事件的结构重要度,进行荔枝冷链运输环节的安全分析,并提出了促进现场安全管理的对策及建议。 相似文献
15.
16.
Xuezhao Li Jinguo Wu Cheng He Qingtao Meng Chunying Duan 《Small (Weinheim an der Bergstrasse, Germany)》2019,15(32)
The effective synthesis of chiral compounds in a highly enantioselective manner is obviously attractive. Inspired by the enzymatic reactions that occur in pocket‐like cavities with high efficiency and specificity, chemists are seeking to construct catalysts that mimic this key feature of enzymes. Recent progress in supramolecular coordination chemistry has shown that metal–organic cages (MOCs) and metal–organic frameworks (MOFs) with chiral confined cavities/pores may offer a novel platform for achieving asymmetric catalysis with high enantioselectivity. The inherent chiral confined microenvironment is considered to be analogous to the binding pocket of enzymes, and this pocket promotes enantioselective transformations. This work focuses on the recent advances in MOCs and MOFs with chiral confined spaces for asymmetric catalysis, and each section is separated into two parts based on how the chirality is achieved in these metal–organic architectures. A special emphasis is placed on discussing the relationship between the enantioselectivity and the confined spaces of the chiral functional MOCs and MOFs rather than catalytic chemistry. Finally, current challenges and perspectives are discussed. This work is anticipated to offer researchers insights into the design of sophisticated chiral confined space‐based metal–organic architectures for asymmetric catalysis with high enantioselectivity. 相似文献
17.
乳化炸药生产安全性浅析 总被引:1,自引:0,他引:1
文章通过对国内乳化炸药生产近些年来所发生的十余起爆炸事故进行分析,剖析事故发生的原因,及乳化炸药的爆炸机理,供同行们在今后的乳化炸药生产设计中参考,避免类似事故的发生. 相似文献
18.
19.
20.
Huang Haoran Li Xin Zhao Chunxia Zhu Longbin Li Yuntao Wu Yuanpeng Li Zhenyu 《Journal of Materials Science》2022,57(1):336-350
Journal of Materials Science - Superhydrophobic and magnetic materials with multiple functions (e.g., continuous oil collection, remote oil removal in confined spaces under magnetic driven,... 相似文献