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煤系地层瓦斯隧道施工风险评价及控制措施

路基工程 2024年第1期 206-211页

作者：冯建林李登峰中铁二院工程集团有限责任公司成都610031 中国五冶集团有限公司成都610063

基于云贵高原某煤系地层高瓦斯隧道,分析影响隧道施工风险的各因素,采用层次分析法计算各层影响因素的权重,运用模糊数学法对隧道施工风险进行综合评判,并按照风险等级制定合理的施工措施。结果表明:施工安全因素所占权重最大;隧道施工... 详细信息

基于云贵高原某煤系地层高瓦斯隧道,分析影响隧道施工风险的各因素,采用层次分析法计算各层影响因素的权重,运用模糊数学法对隧道施工风险进行综合评判,并按照风险等级制定合理的施工措施。结果表明:施工安全因素所占权重最大;隧道施工风险模糊综合评判结果为施工过程中有可能发生风险;施工中发生风险的概率为0.061,等级为4级;应加强施工过程管理,通过各种技术措施确保安全。

关键词：瓦斯隧道风险评价指标权重模糊层次分析判断矩阵隧道风险

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不同排距双排抗滑桩的推力分配及受力分析

路基工程 2024年第2期 131-137页

作者：冯建林李登峰中铁二院工程集团有限责任公司成都610031 中国五冶集团有限公司成都610063

基于乌江双线大桥岸坡支护工程,通过数值模拟计算,研究在复杂地质条件下,不同排距的双排抗滑桩推力分配和受力特征。结果表明:当抗滑桩排距大于17.00 m时,前排桩受到的滑坡推力和桩前抗力均大于后排桩,推力和抗力分配不均匀,该支护排距... 详细信息

基于乌江双线大桥岸坡支护工程,通过数值模拟计算,研究在复杂地质条件下,不同排距的双排抗滑桩推力分配和受力特征。结果表明:当抗滑桩排距大于17.00 m时,前排桩受到的滑坡推力和桩前抗力均大于后排桩,推力和抗力分配不均匀,该支护排距设置不合理;当桩排距小于17.00 m时,前排桩受到的桩后推力和桩前抗力与后排桩近似相等,两桩受力均匀,说明在此范围内设置双排桩较合理;当前排桩与后排桩排距为8.50 m时,从受力和桩顶位移角度分析,两桩排距合理,且更方便工程施工。按排距8.50 m施工完成后,边坡处于稳定状态。

关键词：不同排距双排抗滑桩支护比选位移推力分配稳定性

Targeting TRPM2- and TRPM4-extrasynaptic N-methyl-D-aspartate receptor coupling in ischemic stroke

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Neural Regeneration Research 2023年第11期18卷 2383-2384页

作者： Pengyu Zong Cindy X.Li jianlin feng Lixia Yue Department of Cell Biology Calhoun Cardiology CenterUConn HealthFarmingtonCTUSA

Ischemic stroke represents a heavy burden on public ***,recanalization is the only effective therapy for ischemic stroke in a small population of eligible ***,there is no effective adjunct medication for preventing neuron loss after reperfusion to mitigate longlasting brain *** N-methyl-Daspartate receptors (esNMDARs) are the major cause of ischemic neuronal ***,there is no inhibitor selectively ta rgeting esNMDARs without compromising the function of other"beneficial"syna ptic NMDARs.

关键词： aspartate ischemic medication

Variation of gravity before the Alxa Zuoqi M5.8 earthquake

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Geodesy and Geodynamics 2016年第4期7卷 295-301页

作者： jianlin feng Jin Wei Yujuan Tan Jianzeng Qin Bangwu Huang Ruyi Xie Geophysical Exploration Center China Earthquake AdministrationZhengzhou 450002China Key Laboratory of Earthquake Geodesy Institute of SeismologyChina Earthquake AdministrationWuhan 430071China Wuhan Base of Institute of Crustal Dynamics China Earthquake AdministrationWuhan 430071China

In this study, a classic survey adjustment computation method was used for data obtained in the Inner Mongolia and Ningxia gravimetric networks between September 2013 and April 2015 so as to investigate the variation of gravity before the Alxa Zuoqi M5.8 earthquake. The relationship between gravity variation and the Alxa Zuoqi M5.8 earthquake was analyzed. The results showed that：（1） the severe variation in gravity field at the test sites before the Alxa Zuoqi M5.8 earthquake, as well as the subsequent accelerated rising, might be an earthquake precursor; （2） the Alxa Zuoqi M5.8 earthquake occurred at the turning point where the high-gravity gradient zone changed from the NE direction to NW.

关键词： Repeated gravimetry Gravity variations Alxa Zuoqi M5.8 earthquake High gravity gradient belt

下穿机场跑道大断面隧道施工对策及地层变形规律研究

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隧道建设 2015年第5期35卷 473-477页

作者：冯建霖广州地铁设计研究院有限公司广东广州510010

北京首都国际机场T3与T2航站楼之间的单层双跨连拱浅埋暗挖大断面隧道垂直下穿机场跑道,采用超长管幕下十导洞分步暗挖法施工。通过对隧道施工地表变形进行分析,得出以下结论：1）新建隧道施工地表最大沉降值平均为9.28 mm,控制变形情... 详细信息

北京首都国际机场T3与T2航站楼之间的单层双跨连拱浅埋暗挖大断面隧道垂直下穿机场跑道,采用超长管幕下十导洞分步暗挖法施工。通过对隧道施工地表变形进行分析,得出以下结论：1）新建隧道施工地表最大沉降值平均为9.28 mm,控制变形情况良好,采用超长管幕保护浅埋暗挖施工技术切实可行;2）3个断面变形拟合得到的确定调节系数平均为0.951,地表变形符合Peck公式;3）变形拟合得到的K值平均为1.903,为北京地区常规数值的3-6倍,管幕的存在对新建隧道施工引起的地层变形具有阻隔及扩散作用;4）变形拟合得到的Vl值平均为0.201%,略低于北京地区常规施工方法水平。

关键词：隧道工程下穿施工管幕法地表变形

Review of ultraviolet ageing mechanisms and anti-ageing methods for asphalt binders

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Journal of Road Engineering 2022年第2期2卷 137-155页

作者： Yuanyuan Li jianlin feng Shaopeng Wu Anqi Chen Dongliang Kuang Tao Bai Yangming Gao Jizhe Zhang Linglin Li Liyao Wan Quantao Liu Zongwu Chen Dengjun Gu School of Civil Engineering and Architecture Wuhan Institute of TechnologyWuhan 430074China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Nottingham Transportation Engineering Centre School of Civil EngineeringUniversity of NottinghamNottingham NG72RDUK School of Materials Science and Engineering Chang’an UniversityXi’an 710064China Marie S.Curie Research Fellow Section of Pavement Engineering Faculty of Civil Engineering and GeosciencesDelft University of TechnologyDelft 2628 CNthe Netherlands School of Qilu Transportation Shandong UniversityJinan 250002China School of Automotive and Transportation Engineering Hefei University of TechnologyHefei 230000China Faculty of Engineering China University of GeosciencesWuhan 430074China

Asphalt binder is inevitably aged by ultraviolet(UV)light during its service *** ageing can significantly decrease the technical properties of asphalt *** sensitivity of asphalt to UV ageing and thermal-oxidative ageing differs,such that the UV ageing performance cannot be determined based on the thermal-oxidative ageing *** researches mainly focused on the chemical composite and technical performance changes of asphalt binder during UV ageing,and the UV light parameters effect on the ageing rate of asphalt ***,the theory for characterizing and explaining the development of UV ageing depth does not get too much attentions,and the UV ageing mechanism of asphalt binder is not very ***,it cannot guide to develop or select the good methods or anti-UV ageing additives for asphalt *** paper focuses on the latest researches of the mechanisms and anti-ageing methods of asphalt *** the increase of UV ageing time,the UV ageing of asphalt binder develops gradually from the surface to inner *** are various methods,such as low-penetration grade asphalt,less air void ratio,UV stabilizers and UV light absorbers,that can improve the UV ageing resistance of asphalt binders.A new theory of sensitive wavelengths of asphalt UV ageing is proposed,which can enrich the basic theory of asphalt UV *** on this theory,different wavelengths of UV light have different ageing effects on asphalt *** composite anti-UV ageing additives with barrier and specific absorption effects on UV light is proposed,and may have better improvement effect on the anti-UV ageing performance of asphalt binder.

关键词： Road engineering Asphalt pavement Asphalt binder UV ageing Anti-UV ageing method

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高效液相色谱法分离和鉴定腐马素B_1

菌物系统 1998年第1期17卷 83-85页

作者： feng jianlin Liao Jie Luo Yi Zhang Hong(Institute of Phamcology’ and Toxicology, Academy of Military Medical science, Beijing 100850) 解放军军事医学科学院毒物药物所北京解放军军事医学科学院仪器中心北京中国农业大学微生物系北京

腐马素是由串珠镰刀菌产生的真菌毒素，其中腐马素B1可引发马脑白质软化症等疾病。本文用高效液相色谱法从串珠镰刀菌玉米培养物中分离出了腐马素B1并通过紫外光谱和快原子轰击质谱进行了鉴定。

关键词：腐马素贞效液相色谱分离鉴定肿瘤发生

PBT/碱硼基空心玻璃微珠复合材料的制备及性能

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工程塑料应用 2018年第5期46卷 117-120页

作者：冯建林南京益夫新材料科技有限公司南京210000

采用共混与注塑工艺制备出聚对苯二甲酸丁二酯(PBT)/碱硼基空心玻璃微珠复合材料。通过高倍偏光显微镜、扫描电子显微镜对材料的结构进行了表征,并重点研究了碱硼基空心玻璃微珠对PBT复合材料的密度和力学性能的影响。结果表明:微珠由... 详细信息

采用共混与注塑工艺制备出聚对苯二甲酸丁二酯(PBT)/碱硼基空心玻璃微珠复合材料。通过高倍偏光显微镜、扫描电子显微镜对材料的结构进行了表征,并重点研究了碱硼基空心玻璃微珠对PBT复合材料的密度和力学性能的影响。结果表明:微珠由于是玻璃质的具有中空结构的正球体材料,具有质轻、粒径互补,合理填补空隙的作用。当微珠添加量达到15%时,PBT复合材料密度明显降低,下降约9%。复合材料拉伸强度和拉伸弹性模量有所增强,分别提高了9.5%和21.49%。复合材料弯曲强度和弯曲弹性模量具有同样的趋势,分别提高了7.0%和21.87%。综合各项强度,在冲击强度合理降低的情况下,微珠HN60最佳添加量为8%。

关键词：共混聚对苯二甲酸丁二酯碱硼基空心玻璃微珠复合材料密度力学性能

Event-triggered sliding mode control for first-order nonlinear multi-agent system

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Event-triggered sliding mode control for first-order nonline...