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风化料在沥青混凝土心墙高坝坝壳料中的应用研究

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广东水利水电 2019年第6期 6-8,27页

作者：彭建峰广东珠荣工程设计有限公司

通过对中叶水库石料场弱风化砂岩料、强风化和弱风化砂岩的混合料、以及弱风化砂岩和凝灰岩混合料的试验对比分析,了解了弱风化砂岩料和掺杂强风化岩石或弱风化软岩混合料的物理力学性质差异。风化混合料控制性指标紧密密度、含泥量、... 详细信息

通过对中叶水库石料场弱风化砂岩料、强风化和弱风化砂岩的混合料、以及弱风化砂岩和凝灰岩混合料的试验对比分析,了解了弱风化砂岩料和掺杂强风化岩石或弱风化软岩混合料的物理力学性质差异。风化混合料控制性指标紧密密度、含泥量、内摩擦角、以及碾压后的渗透系数虽与单一砂岩料存在一定差异,但均可满足相关规范对坝壳料的应用条件。中叶水库坝壳料采用风化料填筑后,风化料主要检测指标均满足坝壳料设计要求。风化坝壳料在本工程沥青混凝土心墙高坝中的应用经验,为以后兴建同类型工程具有很好的借鉴作用。

关键词：风化料沥青混凝土心墙坝壳料

Sulphur-template method for facile manufacturing porous silicon electrodes with enhanced electrochemical performance

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Chinese Chemical Letters 2024年第8期35卷 433-436页

作者： peng Zhou Ziang Jiang Yang Li peng Xiao Feixiang Wu Powder Metallurgy Research Institute School of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China

Sulphur(S)-template method based on conventional slurry-casting method has been developed to pro-duce porous silicon(Si)*** facile fabrication technology is suitable for current production line and expected to be widely applied to various electrode materials under large volume change during ***,S particles as template agent are mixed with active material Si,carbon conductor and binder forming uniform *** casting and drying,the electrodes are immersed in carbon disul-fide solution to remove S particles rapidly,generating pores in-situ at the original position of S *** analysis shows that the pores inside electrodes are able to shorten lithium ion diffusion paths,reduce normal expansion rate and decrease formation of cracks in the Si electrode(2 mg_(Si)/cm^(2)),demonstrating a reversible capacity of 951 mAh/g at 0.5 A/g after 100 cycles(with a capacity retention of 99.5%)and a capacity of-826 mAh/g at 2 A/g.

关键词： Sulphur-template Porous electrodes Silicon anodes Low volume expansion Lithium-ion batteries

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水压爆破拆除技术在城区空心板桥中的应用

施工技术 2019年第12期48卷 93-96页

作者：彭建锋中建三局第二建设工程有限责任公司

针对城区复杂环境下空心板桥水压爆破拆除工程,为解决交通组织难度大,确保管线安全,爆破飞石等防护,施工作业面长,施工量大等施工难题,在爆破中采用主桥自中间向两端逐跨原地坍塌爆破拆除、两端引桥桥台及基础弱松动爆破的方案,重点介... 详细信息

针对城区复杂环境下空心板桥水压爆破拆除工程,为解决交通组织难度大,确保管线安全,爆破飞石等防护,施工作业面长,施工量大等施工难题,在爆破中采用主桥自中间向两端逐跨原地坍塌爆破拆除、两端引桥桥台及基础弱松动爆破的方案,重点介绍水压爆破原理与计算,通过布置炮孔、计算药量、选择起爆网路等,设计实际爆破参数,制定施工要点与安全防护措施。此次爆破缩短工期,取得显著的经济效益。

关键词：桥梁工程拆除水压爆破施工技术

Long-time Asymptotics for the Reverse Space-time Nonlocal Hirota Equation with Decaying Initial Value Problem:without Solitons

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Acta Mathematicae Applicatae Sinica 2024年第3期40卷 708-727页

作者： Wei-qi peng Yong CHEN School of Mathematical Sciences East China Normal UniversityShanghai 200241China College of Mathematics and Systems Science Shandong University of Science and TechnologyQingdao 266590China

In this work,we mainly consider the Cauchy problem for the reverse space-time nonlocal Hirota equation with the initial data rapidly decaying in the solitonless *** from the Lax pair,we first construct the basis Riemann-Hilbert problem for the reverse space-time nonlocal Hirota ***,using the approach of Deift-Zhou nonlinear steepest descent,the explicit long-time asymptotics for the reverse space-time nonlocal Hirota is *** the reverse space-time nonlocal Hirota equation,since the symmetries of its scattering matrix are different with the local Hirota equation,the v(λ_(i))(i=0,1)would like to be imaginary,which results in theδ_(λi)^(0)contains an increasing t(±Imv(λ_(i)))/2,and then the asymptotic behavior for nonlocal Hirota equation becomes differently.

关键词： Riemann-Hilbert problem reverse space-time nonlocal Hirota equation long-time asymptotics nonlinear steepest descent method

Some Rotundities of Orlicz–Lorentz Spaces

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Acta Mathematica Sinica,English Series 2024年第8期40卷 1893-1919页

作者： Wan Zhong GONG peng WANG Department of Mathematics Anhui Normal UniversityWuhu 241000P.R.China

K-UR,K-LUR and K-R are the generalizations of UR,LUR and R respectively,which are of great significance in Banach space *** in Orlicz–Lorentz function spaceΛ_(ϕ,ω)^(◦)[0,γ)equipped with the Orlicz norm,the research methods of K-UR,K-LUR and K-R are much more complicated than those of UR,LUR and *** this paper we obtain some criteria of K-UR,K-LUR and K-R ofΛ_(ϕ,ω)^(◦)[0,γ)by means of the norm of dual space and H_(μ)property ofΛ_(ϕ,ω)^(◦)[0,γ).

关键词： Orlicz-Lorentz space Orlicz norm k-uniform rotundity locally k-uniform rotundity krotundity

Response of runoff and its components to climate change in the Manas River of the Tian Shan Mountains

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Advances in Climate Change Research 2024年第1期15卷 62-74页

作者： Ze-Long YANG peng BAI Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 10010lChina University of Chinese Academy of Sciences Beijing 100049China

A warming-wetting climate trend has led to increased runoff in most watersheds in the Tian Shan Mountains over the past few ***,it remains unclear how runoff components,that is,rainfall runoff(Rrain),snowmelt runoff(Rsnow),and glacier meltwater(Rglacier),responded to historical climate change and how they will evolve under future climate change ***,we used a modified Hydrologiska Byrans Vattenbalansavdelning(HBV)model and a detrending method to quantify the impact of precipitation and temperature changes on runoff components in the largest river(Manas River)on the northern slope of the Tian Shan Mountains from 1982 to 2015.A multivariate calibration strategy,including snow cover,glacier area,and runoff was implemented to constrain model parameters associated with runoff *** downscaled outputs of 12 general circulation models(GCMs)from the Sixth Coupled Model Intercomparison Project(CMIP6)were also used to force the modified HBV model to project the response of runoff and its components to future(2016-2100)climate change under three common socio-economic pathways(SSP126,SSP245,and SSP585).The results indicate that Rrain dominates mean annual runoff with a proportion of 42%,followed by Rsnow(37%)and Rglacier(21%).In terms of inter-annual variation,Rrain and Rsnow show increasing trends(0.93(p0.05)mm per year),while Rglacier exhibits an insignificant(p>0.05)decreasing trend(-0.12 mm per year),leading to an increasing trend in total runoff(1.12 mm per year,p>0.05).The attribution analysis indicates that changes in precipitation and temperature contribute 8.16 and 10.37 mm,respectively,to the increase in runoff at the mean annual *** wetting(increased precipitation)increases Rrain(5.03 mm)and Rsnow(3.19 mm)but has a limited effect on Rglacier(-0.06 mm),while warming increases Rrain(10.69 mm)and Rglacier(5.79 mm)but decreases Rsnow(-6.12 mm).The negative effect of glacier shrinkage on Rglacier has outweighed the

关键词： Tian Shan Rainfall runoff Snowmelt runoff Glacier meltwater Warming-wetting Tipping point

马兰矿10604工作面采空区自燃预测及防灭火技术

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山东煤炭科技 2023年第1期41卷 97-100页

作者：彭建峰山西焦煤西山煤电马兰矿山西太原030205

根据10604采煤工作面实际情况,利用格雷哈姆系数进行采空区遗煤自燃程度测定,发现在采空区不同地温条件下,格雷哈姆系数应根据实验室测定结果进行对应改变。停采期间为预防采空区自然发火,采用封闭墙、灌注凝胶和砂浆的综合防灭火技术,... 详细信息

根据10604采煤工作面实际情况,利用格雷哈姆系数进行采空区遗煤自燃程度测定,发现在采空区不同地温条件下,格雷哈姆系数应根据实验室测定结果进行对应改变。停采期间为预防采空区自然发火,采用封闭墙、灌注凝胶和砂浆的综合防灭火技术,回风巷和上隅角CO含量始终低于2.4×10^(-5),温度稳定在30~35℃之间。

关键词：采煤工作面自燃预测防灭火治理效果

Highly efficient capture of thorium ion by citric acid-modified chitosan gels from aqueous solution

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Chinese Chemical Letters 2024年第5期35卷 361-365页

作者： Linshan peng Qihang peng Tianxiang Jin Zhirong Liu Yong Qian State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices East China University of TechnologyNanchang 330013China

A novel citric acid-modified chitosan gel(CSCA)was synthesized through a simple one-step process and was used to extract thorium ions from *** CSCA samples with varying chemical compositions were analyzed using SEM with mapping EDS,FT-IR,and static water contact angle measurements,and their adsorption behaviors were studied in *** results showed that the adsorption performance of CSCA improves with the increase of CA content in the *** possesses an impressive capacity for thorium adsorption of 279.8 mg/***,it showed an ultra-fast adsorption rate and reached equilibrium within 30 *** terms of recyclability,the CSCA still retained more than 86%of its initial adsorption capacity after 6 cycles of *** functional theory(DFT)analysis reveals that the good selectivity of this material towards thorium ions should be attributed to the high density of adsorption sites and strong interaction between carboxyl groups and thorium *** work could be beneficial in the design and synthesis of new polymer materials for extracting thorium.

关键词： Thorium Adsorption Citric acid Chitosan DFT calculation

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长输天然气管道危险因素及对策分析

当代化工研究 2022年第2期 84-86页

作者：彭健锋国家管网集团川气东送天然气管道有限公司湖北430022

天然气长输管道是输送天然气能源的重要方式,对市场能源需求发挥重要作用。由于天然气气体易燃易爆性质及多种因素影响,天然气长输管道安全运行面临严峻形势。掌握天然气管道运行中的危险因素,采取有效的管理措施预防机制对天然气管道... 详细信息

天然气长输管道是输送天然气能源的重要方式,对市场能源需求发挥重要作用。由于天然气气体易燃易爆性质及多种因素影响,天然气长输管道安全运行面临严峻形势。掌握天然气管道运行中的危险因素,采取有效的管理措施预防机制对天然气管道安全运行具有重要意义。分析天然气长输管道风险形势,详细阐述天然气管道主要危险因素,对不同管道风险建立应急管理方法提出对策。

关键词：天然气管道危险因素安全管理