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Major accident analysis and prevention of coal mines in China from the year of 1949 to 2009

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Mining Science and Technology 2011年第5期21卷 693-699页

作者： Wu Lirong Jiang Zhongan Cheng Weimin Zuo Xiuwei lv dawei Yao Yujing School of Civil and Environmental Engineering University of Science ＆ Technology Beijing Beijing 100083 China Key Laboratory of Mine Disaster Prevention and Control Shondong University of Science and Technology Qingdao 266590 China Electronic-Engineering Teaching and Section of Four Department Artillery Academy Hefei 230031 China

From the year of 1949 to the present, the China national coal output has been increasing quickly and became first in the world in 2009. But at the same time, major coal mining accidents still exist nowadays. In order to review the overall situation and provide information on major accidents of coal mines in China, we investigated 26 major coal mining accidents in China between the years of 1949 and 2009 through statistical methods, each of which led to more than 100 fatalities. Statistical characteristics about accident-related factors such as time, death toll, accident reasons, characters and nature of enterprise were analyzed. And some special conclusions have been achieved. For example, although we have made great progress, the safety situation in China coal mining industry is still serious, and the reasons for the mining accidents are all human errors which are not inevitable. Such results may be helpful to prevent major accidents in coal mines. Moreso, based on both the knowledge of other countries which have good safety situation nowadays and the safety management situation of China, we made suggestion on safety management of China coal mining. In conclusion, countermeasures were proposed in accordance with the results of statistical studies and the analyses of problems existed in coal mines, including the perfec- tion of safety supervision organization, the establishment of cooperating agency among government, coal mines and workers, the perfection of safety rules and regulations, the improvement of safety investment, the enhancement of safety training, the development of safety technique, and the development of emer- gency rescue technique and equipment.

关键词： Coal mine accidentStatistical analysisPreventionManagement

Hydrocarbon Generation Potential Evaluation of Coal Shale Gas of Permo-Carboniferous in Jiyang Depression

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Journal of Geological Research 2019年第2期1卷 1-8页

作者： Pingping Li dawei lv Huiyong Wang Wengui Fan Changyong Lu Shandong University of Science and Technology Qingdao 266590China Shandong Provincial Key Laboratory of Depositional Mineralization&Sedimentary Minerals College of Geological Sciences&EngineeringShandong University of Science and TechnologyQingdao 266590China

In order to study the hydrocarbon-generating potential of Carboniferous-Permian coal shale in Jiyang Depression,geochemistry,petroleum geology and coal geology were applied to study the residual strata distribution of Carboniferous-Permian in Jiyang Depression,organic matter abundance,organic matter types and organic matter maturity of *** results show that the thickness of the Carboniferous-Permian residual strata in Jiyang Depression is generally 200-800 m,with a maximum thickness of 900 m;the organic matter abundance of coal-bearing shale is good,and it is type III kerogen,which is conducive to gas generation,and the maturity of organic matter reaches a mature-higher maturity stage;the hydrocarbon generation potential of Benxi Formation and Taiyuan Formation is better;Medium to good hydrocarbon source rocks is able to be found in every sag of Shanxi Formation hydrocarbon source rocks,but the scope is limited,and the overall evaluation is still *** speaking,the Permo-Carboniferous coal-bearing shale in Jiyang Depression has certain shale gas exploration potential.

关键词： Jiyang depression Permo-Carboniferous Shale gas Hydrocarbon generation potential Organic matter abundance

The Genetic Mechanism of Inertinite in the Middle Jurassic Inertinite- Rich Coal Seams of the Southern Ordos Basin

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Journal of Geological Research 2019年第3期1卷 1-15页

作者： Dongdong Wang Qiang Mao Guoqi Dong Shipeng Yang dawei lv Lusheng Yin College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao Shandong266590China Shandong Institute of Geological Survey Ji’nan Shandong250013China

also an important geological information carrier of coal forming *** the southern section of the Ordos Basin,the No.4 inertinite-rich coal seam of the Middle Jurassic Yan’an Formation in the Binchang Coal field was selected as an example to study the genetic mechanism of the *** this study,the results obtained from experimental tests of coal rock,including principal and trace elements,stable carbon isotopes,scanning electron microscopy,inertinite reflectance,sporopollen and free radical retorting methods,were ***,the findings were combined with the previous understanding of the oxygen content in the atmosphere and ground fire characteristics,in order to discuss the genesis mechanism of inertinite in the No.4 coal *** obtained research results were as follows:(1)During the coal forming period of the No.4 coal seam,the overall climate had been relatively *** were four relatively dry-wet climate cycles in the No.4 coal seam,which were controlled by the eccentricity astronomical *** inertinite content were relatively high during the dry periods;(2)The temperature range suitable for microorganism activities during the oxidation processes was between 0 and 80℃.The simulation results of the free radical concentrations showed that the maximum temperature of fusain in the No.4 coal seam during the process of coalification had not exceeded 300℃,which was significantly higher than the temperature range of microorganism ***,these were not conducive to the activities of microorganism and formation of inertinite during the coal-forming period;(3)The genesis temperature of the inertinite in the No.4 coal seam was calculated according to the reflectance of the inertinite,which was lower than 400℃.This result supported the cause of wildfire of the inertinite and reflected that the type of wildfire was mainly ground fire,along with partially surface ***,the paleogeographic location,climatic conditions,atmosp

关键词： Inertinite-rich coal Wildfire events Oxidation effects Genetic mechanism Jurassic Period Ordos Basin

Blood diagnostic and prognostic biomarkers in amyotrophic lateral sclerosis

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Neural Regeneration Research 2025年第9期20卷 2556-2570页

作者： Yongting lv Hongfu Li Department of Neurology Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina Department of Medical Genetics and Center for Rare disease Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina Nanhu Brain-Computer Interface Institute HangzhouZhejiang Province

Amyotrophic lateral sclerosis is a devastating neurodegenerative disease for which the current treatment approaches remain severely *** principal pathological alterations of the disease include the selective degeneration of motor neurons in the brain,brainstem,and spinal cord,as well as abnormal protein deposition in the cytoplasm of neurons and glial *** biological markers under extensive scrutiny are predominantly located in the cerebrospinal fluid,blood,and even *** these biomarke rs,neurofilament proteins and glial fibrillary acidic protein most accurately reflect the pathologic changes in the central nervous system,while creatinine and creatine kinase mainly indicate pathological alterations in the peripheral nerves and *** light chain levels serve as an indicator of neuronal axonal injury that remain stable throughout disease progression and are a promising diagnostic and prognostic biomarker with high specificity and ***,there are challenges in using neurofilament light chain to diffe rentiate amyotrophic lateral sclerosis from other central nervous system diseases with axonal *** fibrillary acidic protein predominantly reflects the degree of neuronal demyelination and is linked to non-motor symptoms of amyotrophic lateral sclerosis such as cognitive impairment,oxygen saturation,and the glomerular filtration *** DNA-binding protein 43,a pathological protein associated with amyotrophic lateral sclerosis,is emerging as a promising biomarker,particularly with advancements in exosome-related *** is currently lacking for the value of creatinine and creatine kinase as diagnostic markers;however,they show potential in predicting disease *** the vigorous progress made in the identification of amyotrophic lateral sclerosis biomarkers in recent years,the quest for definitive diagnostic and prognostic biomarke rs remains a formidable *** review summarizes the lat

关键词： amyotrophic lateral sclerosis biomarker blood biomarkers diagnosis glial fibrillary acidic protein neurofilament light chain prognosis TAR DNA-binding protein 43

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超细水泥封堵技术在长井段层系封堵中的应用

采油工程 2016年第3期 6-9,87页

作者：吕大伟大庆油田有限责任公司第四采油厂

针对常规封堵工艺在XB区块封堵上部油层、开采下部油层时存在不适应性问题,应用超细水泥封堵技术进行长井段封堵,封堵后井筒缩径小,满足了“能封住、能解开、能深抽、能测试”的油田开发要求。依据油层特点,合理优选超细水泥粒径、配比... 详细信息

针对常规封堵工艺在XB区块封堵上部油层、开采下部油层时存在不适应性问题,应用超细水泥封堵技术进行长井段封堵,封堵后井筒缩径小,满足了“能封住、能解开、能深抽、能测试”的油田开发要求。依据油层特点,合理优选超细水泥粒径、配比和用量,并结合前置凝胶颗粒段塞调整油层吸液能力,防止后续超细水泥浆受油层流体侵蚀;利用防返吐挤注工艺技术,实现超细水泥“带压候凝”,保证封堵质量。经现场试验表明,超细水泥封堵技术能够利用一趟挤注管柱完成长井段封堵,一次封堵井段长度达到120m,封堵成功率100%,具好良好的应用前景。

关键词：超细水泥长井段凝胶颗粒防返吐封隔器封堵成功率

低品位细骨料超高层泵送混凝土配制技术与应用

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混凝土 2021年第2期 93-95页

作者：李绍鹏吕大为唐望中建西部建设湖南有限公司湖南长沙410153 中国公路工程咨询集团有限公司北京100089

为了在超高层泵送混凝土中合理使用特细砂、粗机制砂等低品位细骨料,以江砂掺量、浆骨比和砂率为因素,设计了3因素3水平的正交试验。结果表明:(1)各因素对混凝土工作性能的影响主次顺序是浆骨比、砂率、江砂掺量,工作性能随浆骨比和砂... 详细信息

为了在超高层泵送混凝土中合理使用特细砂、粗机制砂等低品位细骨料,以江砂掺量、浆骨比和砂率为因素,设计了3因素3水平的正交试验。结果表明:(1)各因素对混凝土工作性能的影响主次顺序是浆骨比、砂率、江砂掺量,工作性能随浆骨比和砂率的增加而得到改善,随江砂掺量的增加先改善后下降;(2)各因素对28 d强度的影响主次顺序是浆骨比、江砂掺量、砂率,28 d强度随浆骨比的增加而增加,随砂率的增加而略微下降,随江砂掺量的增加而降低。在此基础上,确定了低品位细骨料C30、C45混凝土配合比,在某工程中实现了高度达328 m的超高层混凝土泵送浇筑。试验与工程应用结果可为建筑施工企业应用低品位细骨料提供参考。

关键词：低品位细骨料正交试验超高层泵送混凝土

浅谈中国工程地质学发展现状及未来发展趋势——基于国家自然科学基金(1987~2021)立项数据

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工程地质学报 2024年第1期32卷 349-357页

作者：梁昌玉吕大炜初航任建国国家自然科学基金委员会地球科学部北京100085

中国工程地质学始终紧密结合国家战略需求尤其是工程建设中的科学技术问题,经历了初期缓慢发展到逐步成熟的过程。本文根据中国工程地质领域自1987年申请国家自然科学基金至2021年期间获资助项目,系统分析了35 a来我国工程地质学研究方... 详细信息

中国工程地质学始终紧密结合国家战略需求尤其是工程建设中的科学技术问题,经历了初期缓慢发展到逐步成熟的过程。本文根据中国工程地质领域自1987年申请国家自然科学基金至2021年期间获资助项目,系统分析了35 a来我国工程地质学研究方向和研究内容的演进。研究发现,工程地质学的发展经历了从地质现象表征到地质规律总结,再到机制探索等阶段,呈现出国家战略的主导性、灾难性事件的驱动性、研究趋精细化和复杂化、学科发展的阶段性,以及受资助单位的集中性等特点。未来中国工程地质学发展,应基于地球系统科学理念,推动工程地质学研究思维方式和研究范式的改变;打破学科间壁垒,加强工程地质学与其他学科的交叉融通,丰富并深化工程地质学的发展,使得工程地质学向着更科学、更具有多学科融合特点的方向发展,并催生新的科学生长点;抓住数据革命契机,开辟工程地质学研究新途径;始终结合国家重大战略需求,加强青藏高原及其周缘重大工程地质问题研究,推出新理论,解决新问题。

关键词：中国工程地质学国家自然科学基金项目学科发展特点研究范式学科交叉融通数据驱动

C_(9)石油树脂/SBS高黏沥青的制备及性能评价

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化工新型材料 2021年第1期49卷 259-263,268页

作者：王可吕大为姚立阳河南城建学院土木与交通工程学院平顶山467000

采用共混复合改性技术研发一种新型高黏沥青,通过基质沥青、苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)、C_(9)石油树脂(C_(9)PR)、增溶剂等原材料优选,确定了SBS/C_(9)PR高黏沥青的组成材料及剂量方案,结合物理性能、荧光显微、多应力蠕变恢... 详细信息

采用共混复合改性技术研发一种新型高黏沥青,通过基质沥青、苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)、C_(9)石油树脂(C_(9)PR)、增溶剂等原材料优选,确定了SBS/C_(9)PR高黏沥青的组成材料及剂量方案,结合物理性能、荧光显微、多应力蠕变恢复(MSCR)、低温弯曲梁流变(BBR)和动态剪切流变(DSR)实验,并与主流高黏沥青的物理性能、相态结构、高低温流变性能和储存稳定性进行比较。结果表明,SBS/C_(9)PR高黏沥青的组成材料及掺量方案为:SK70^(#)基质沥青;SBS改性剂(LG501∶LG411=1∶1)、C_(9)PR_3、增溶剂(糠醛抽出油)和交联剂(硫磺)掺量分别为4%、5%、2%和1‰;与普通SBS,以及TPS和SINOTPS高黏沥青相比,SBS/C_(9)PR高黏沥青相态分布更加均匀,因为C_(9)PR和增溶剂增加了SBS与沥青的相容性,从而使其表现出更优的储存稳定性;MSCR实验表明,SBS/C_(9)PR高黏沥青具有良好的高温和低温流变性能,高温分级为PG64E,适用于路面温度不超过64℃的极重交通沥青路面。

关键词：道路工程高黏沥青复合改性性能研究高温性能相态分析

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以留样再测为基础的实验室质量控制

理化检验（化学分册） 2021年第6期57卷 545-549页

作者：李怿贾苒吕大伟白正伟中石化(洛阳)科技有限公司洛阳471003

分析实验室的内部质量控制是实验室对其测试系统进行的持续的、严格的评估和管理,既是实验室管理体系标准的要求,也是实验室控制质量风险、寻求改进机会的重要切入点[1-2]。控制图是实验室实施内部质量控制的重要工具。实验室建立控制... 详细信息

分析实验室的内部质量控制是实验室对其测试系统进行的持续的、严格的评估和管理,既是实验室管理体系标准的要求,也是实验室控制质量风险、寻求改进机会的重要切入点[1-2]。控制图是实验室实施内部质量控制的重要工具。实验室建立控制图的常见做法是:(1)制备大量的质量控制样品(以下简称为质控样品)。

关键词：分析实验室内部质量控制实验室质量控制质控样品实验室管理体系测试系统质量风险质量控制样品