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Based on the rigorous situation of safety production in coal mines, the paper analyzed the statistical data of recent accidents indexes in Henan's coal mines. Using investigation and comparison analysis methods, a specified analysis on mining conditions, technical facility level, safety input and vocational quality of workers in Henan's coal mines was conducted. The result indicates that there have been existing such main safety production problems as weak safety management, low-level facilities, inadequate safety input and poor vocational quality and so on. Finally it proposes such reference solutions as to establish and perfect coal mining supervision and management system, to increase safety investment into techniques and facilities and to strengthen workers' safety education and introduction of more high-level professional talents. 相似文献
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孔留安 《河南理工大学学报(自然科学版)》2006,25(3):179-182
为使广大同人能够比较系统地了解“瓦斯地质”的由来和现状,进一步扩大瓦斯地质研究领域的影响,在资料的广泛收集和深入研究的基础上,就瓦斯地质概念的提出、瓦斯地质理论的形成和瓦斯地质学科的发展以及开展瓦斯地质研究的意义等问题提出了自己的一孔之见.阐述了以杨力生教授为代表的老一代煤矿安全学人在瓦斯地质概念的提出、理论的形成过程中所发挥的开拓、奠基作用;简要归纳了瓦斯地质的基本观点和理论;重点介绍了河南理工大学在瓦斯地质学科的学术团队建设、课程建设、教材建设和人才培养与培训等方面的现状和成就;扼要阐述了开展瓦斯地质研究的意义. 相似文献
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采用熔铸工艺制备了含氮w为0.045%~0.27%的原位自生氮化物增强钛基复合材料.分析测试了该材料的铸态组织和合金的力学性能.研究结果表明:在Ti-N合金中,当氮含量w在0.045%至0.18%范围时,合金的基体为α-Ti,增强相为TiN0.3.氮含量增加到0.225%时增强相转变为Ti2N.当增强相由TiN0.3转变为Ti2N时,抗压强度显著增加.在Ti-6Al的合金中,当氮含量w在0.045%~0.27wt%时,合金的增强相为钛、铝、氮的三元化合物;随着含氮量的增加,增强体的体积分数有所增加.Ti-6Al-xN中的氮化物较为细小. 相似文献
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