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深部矿井采煤及充填空间优化布局方法研究

能源与节能 2024年第7期 118-120页

作者：张瑞军山西阳城阳泰集团屯城煤业有限公司山西晋城048000

以屯城煤矿为例,介绍了1种深部矿井采煤及充填空间优化布局方法。该方法采用了井下新增的跳汰分选系统,并将其布置到井下转运硐室,同时在1303N-1与1304N两个作业面进行布置。通过应用得知,现场作业面围岩强度较高,表明留巷围岩符合规定... 详细信息

以屯城煤矿为例,介绍了1种深部矿井采煤及充填空间优化布局方法。该方法采用了井下新增的跳汰分选系统,并将其布置到井下转运硐室,同时在1303N-1与1304N两个作业面进行布置。通过应用得知,现场作业面围岩强度较高,表明留巷围岩符合规定要求,可以提高井下作业的安全性,确认了深部矿井采煤及充填空间优化布局方法具有较高的应用价值。

关键词：煤矿开采采煤及充填空间优化布局留巷围岩

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煤矿巷道快速掘进临时支架结构应用实践研究

能源与节能 2024年第5期 231-234页

作者：张瑞军山西阳城阳泰集团屯城煤业有限公司山西晋城048000

对当前市场上已公布的超前支架进行研究分析,可以发现这些支架的设计、选型和生产主要是为了应对围岩的剧烈变化、高矿压和较低的保护力。因此,这类支架通常具有较重的质量、较大的体积、较高的保护力和较小的灵活性,应用局限于良好的... 详细信息

对当前市场上已公布的超前支架进行研究分析,可以发现这些支架的设计、选型和生产主要是为了应对围岩的剧烈变化、高矿压和较低的保护力。因此,这类支架通常具有较重的质量、较大的体积、较高的保护力和较小的灵活性,应用局限于良好的巷道环境,而对于地质状况相对复杂的巷道,其应用范围会受到限制。因此,提出了一种全新的弱支护和强防护的支架设计方案,创新设计一种新型机载式的预先临时支架。

关键词：超前支架支护强度实体设计参数计算

陆永辉分层针刺任脉经穴治疗良性前列腺增生临床经验

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中国针灸 2024年第5期44卷 569-573页

作者：吕璞陆永辉国文豪张睿俊张腾北京中医药大学研究生院北京100029 中国中医科学院西苑医院针灸科北京100091 中国中医科学院研究生院

介绍陆永辉教授分层针刺任脉经穴治疗良性前列腺增生的学术思想与临床经验。陆永辉教授认为本病病机为三焦气机不畅,膀胱气化失司,致水液代谢失常,则症见小便不利。临床刺筋(膜)行气,取任脉经穴刺入不同深度,浅刺气海、关元畅三焦气机,... 详细信息

介绍陆永辉教授分层针刺任脉经穴治疗良性前列腺增生的学术思想与临床经验。陆永辉教授认为本病病机为三焦气机不畅,膀胱气化失司,致水液代谢失常,则症见小便不利。临床刺筋(膜)行气,取任脉经穴刺入不同深度,浅刺气海、关元畅三焦气机,中刺募穴中极利三焦募原,深刺曲骨缝隙“募刺迫脏”,以调气行滞通窍,疏利三焦气机,恢复膀胱气化功能,从而利小便治癃闭。

关键词：良性前列腺增生针刺任脉三焦名医经验陆永辉

Distinct phase transitions and dielectric anomalies in two 4-methylanilinium salts

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Science China Chemistry 2012年第2期55卷 201-207页

作者： zhang Wen XU ruijun Ordered Matter Science Research Center Southeast University Nanjing 211189 China

Solid-state phase transitions of 4-methylanilinium perchlorate （4-CH3C6H4NH3.C104, 1） and tetrafluoroborate （4-CH3C6H4- NH3-BF4, 2） were investigated with variable-temperature X-ray single-crystal structure analysis and thermal studies. Both 1 and 2 undergo first-order phase transitions and exhibit distinct dielectric anomalies at 385 and 247 K, respectively.

关键词： organic-inorganic hybrid compounds dielectricity phase transition crystal structure switchable molecular dielectrics

Effects of Friction Heat on the Tribological Properties of the Woven Self-lubricating Liner

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Chinese Journal of Mechanical Engineering 2009年第6期22卷 918-924页

作者： YANG Yulin ZU Dalei zhang ruijun QI Xiaowen Key Laboratory of Fundamental Science of Mechanical Structure and Material Science under Extreme Condition for National Defence Yanshan University Qinhuangdao 066004 China State Key Laboratory of Metastable Materials Science and Technology. Yanskan Universiry Qinhuangdao 066004 China

In the dry-sliding process of the woven self-lubricating liner which is used in the self-lubricating spherical plain bearing, the friction heat plays an important role in the tribological performances of the liner. It has important value to study on the relationship between tribological performances of the liner and the friction heat. Unforttmately, up to now, published work on this relationship is quite scarce. Therefore, the effect of friction heat on the tribological performances of the liner was investigated in the present work. The tribological behaviors of the liner were evaluated by using the high temperature end surface wear tester. Scanning electron microscopy （SEM） was utilized to examine the morphologies of worn surfaces of the liner and study the failure modes. Differential scanning calorimetry （DSC） measurement and X-ray diffraction （XRD） analysis were performed to study the behaviors of the wear debris. The temperature rise on the worn surface was calculated according to classical models. SEM observation shows that the dominating wear mechanism for the liner is mainly affected by friction shear force, contact pressure and friction heat. Higher fusion heat for the wear debris than that for the pure polytetrafluroethylene （PTFE） indicates that the PTFE is the main portion of the wear debris, and, the PTFE in the wear debris shows a higher crystallisation degree owing to the effects of friction shear force and the friction heat. Combining the calculated temperature rise results with the wear rate of the liner, it can be concluded that the effects of temperature rise o n the tribological performances of the liner become more obvious when the temperature rise exceeds the glass transition temperature （Tg） of the PTFE. The wear resistance of the liner deteriorates dramatically when the temperature rise approaches to the melting point （Ton） of the PTFE. The tribological performances of the liner can be improved when the temperature rise exceeds Tg but is far l

关键词： woven fabric self-lubricating liner friction and wear friction heat differential scanning calorimetry thermal analysis transfer film

氧化石墨烯对再生砂超高性能混凝土力学及抗氯离子渗透性能的影响

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无机盐工业 2024年第8期56卷 54-59页

作者：张瑞君陈国良宋春草朱亚飞郑州工商学院工学院河南郑州450045 河南豫之筑建设工程有限公司河南郑州450045 合肥工业大学土木与水利工程学院安徽合肥230009

鉴于再生砂(RS)部分取代石英砂(QS)制备再生砂超高性能混凝土(RS-UHPC)的力学性能和耐久性降低的问题,以不同氧化石墨烯(GO)掺量为试验参数,探究GO对UHPC工作性能、力学性能及抗氯离子渗透性能的影响规律,并通过差热-热重分析和扫描电... 详细信息

鉴于再生砂(RS)部分取代石英砂(QS)制备再生砂超高性能混凝土(RS-UHPC)的力学性能和耐久性降低的问题,以不同氧化石墨烯(GO)掺量为试验参数,探究GO对UHPC工作性能、力学性能及抗氯离子渗透性能的影响规律,并通过差热-热重分析和扫描电子显微镜等手段揭示其增强机理。结果表明:掺入RS会降低UHPC的流动度、力学性能及UHPC抗氯离子渗透性能;随着GO掺量的增加,RS-UHPC流动度逐渐下降,但其力学性能、抗氯离子渗透性能均显著提升,当GO质量分数为0.06%时,RS-UHPC的28 d抗压强度和抗折强度分别提升11.8%和49.6%,氯离子扩散系数降低31.8%,抗裂韧性显著提升。RS的内养护效应和GO的晶核效应均促进水泥水化、降低基体孔隙率、改善再生砂与基体的界面过渡区,从而提升RS-UHPC的力学性能、抗裂性能和抗氯离子渗透性能。

关键词：超高性能混凝土氧化石墨烯再生砂力学性能界面过渡区

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Sliding Wear of the Hybrid Kevlar/PTFE Fabric Reinforced Phenolic Composite Filled with Nano-titania

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Chinese Journal of Mechanical Engineering 2011年第1期24卷 154-159页

作者： YANG Yulin HUANG Shijun ZU Dalei zhang ruijun QI Xiaowen Key Laboratory of Fundamental Science of Mechanical Structure and Material Science under Extreme Condition for National Defence Yanshan University Qinhuangdao 066004 China State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004 China

The Kevlar/polytetrafluroethylene（Kevlar/PTFE） fabric composite can be used as a self-lubricating liner of the self-lubricating *** types of nano-particles can improve the tribological performance of the polymer-based ***,up to now,published work on the effect of nano-particles on the tribological performance of the fabric composite which can be used as a self-lubricating liner is quite ***,for the purpose of exploring a way to significantly improve the tribological performance of the fabric composite,the tribological performance of the Kevlar/PTFE fabric composite filled with nano-titania is evaluated by using the block-on-ring wear *** scanning electron microscopy is utilized to observe the morphologies of worn surfaces of the fabric composites and the *** tensile properties of the composites are evaluated on the universal material testing *** test results show that the addition of nano-titania at a proper mass fraction of the matrix resin improves the wear resistance and the tensile strength,decreases the friction coefficient,and makes the wear volume of the composite reach a relative steady state more quickly;plastic deformation and microcutting are important for the wear of the fabric composite;a lubricating layer is formed on the worn surface of the composite during sliding,and the lubricating layer is critical for the tribological performance of the composite;the formation and properties of the lubricating layer are influenced by the nano-titania *** proposed study on the effect of nano-titania on the tribological performance of the Kevlar/PTFE fabric composite,especially on the evolution of the worn surface of the composite,provides the basis for further understanding of the influence mechanism of the nano-particles on the tribological performance of the composite and explores a method of improving the tribological performance of the composite.

关键词： hybrid Kevlar/PTFE fabric composite self-lubricating liner nano-titania friction and wear lubricating layer

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中空纤维纳滤膜在染料分离应用中的研究进展

工业水处理 2024年第1期44卷 1-12页

作者：张瑞君安张鑫宗悦高珊珊田家宇河北工业大学土木与交通学院天津300401

印染行业产生了大量富含染料的高盐废水,中空纤维纳滤膜的选择性分离特征有望实现染料和无机盐的高效分离,进而完成印染废水的污染治理和有价资源的同步回收,且与传统的卷式膜相比还具有填充密度大和自支撑的优势,因而在印染废水处理领... 详细信息

印染行业产生了大量富含染料的高盐废水,中空纤维纳滤膜的选择性分离特征有望实现染料和无机盐的高效分离,进而完成印染废水的污染治理和有价资源的同步回收,且与传统的卷式膜相比还具有填充密度大和自支撑的优势,因而在印染废水处理领域得到了日益广泛的关注。回顾了近年来中空纤维纳滤技术在染料分离过程中的研究进展,重点探讨了适用于染料分离的疏松型和荷正电中空纤维纳滤膜材料的制备,分析了中空纤维纳滤膜在染料分离过程中的膜污染特性以及相应的膜污染控制措施。最后对未来的研究方向进行了展望,以期进一步推动中空纤维纳滤膜技术在染料废水处理中的推广与应用。

关键词：纳滤膜中空纤维染料分离膜污染废水处理

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汽车总装防错体系研究

汽车工艺与材料 2024年第7期 28-33页

作者：钟志良宋卫涛张瑞军北京北汽越野车研究院有限公司北京101300

为规避汽车总装生产过程中装错零件、装错位置、未装到位和漏装等错装风险,从设计、工艺、物流、管理4个维度建立总装防错体系。阐述并用案例说明了产品通用化、结构防错、颜色防错、标识防错、工艺路线防错、工艺卡注明、扫码防错、智... 详细信息

为规避汽车总装生产过程中装错零件、装错位置、未装到位和漏装等错装风险,从设计、工艺、物流、管理4个维度建立总装防错体系。阐述并用案例说明了产品通用化、结构防错、颜色防错、标识防错、工艺路线防错、工艺卡注明、扫码防错、智能化拧紧系统、工业视觉系统、成套零部件供应(SPS)物流模式、智能亮灯系统、物料清单(BOM)管理、断点管理等防错子维度的工作原理和应用要点,指出了需要各维度的复合以达到良好的防错效果。

关键词：总装防错体系设计防错工艺防错物流防错管理防错