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Influence of advanced engineering measures on displacement and stress field of surrounding rock in tunnels crossing active strike-slip faults

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Frontiers of Structural and Civil Engineering 2023年第10期17卷 1477-1501页

作者： Hui ZHOU jiancheng xiao Manchao HE Jingjing LU Zhigang TAO Futong XU Congcong HOU State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and TechnologyBeijing 100083China School of Mechanics and Civil Engineering China University of Mining and TechnologyBeijing 100083China

Based on significant improvements in engineering materials,three advanced engineering measures have been proposed-super anchor cables,high-strength concrete anti-fault caverns,and grouting modification using high-strength concrete-to resist fault dislocation in the surrounding rock near tunnels crossing active strike-slip ***,single-or multiple-joint advanced engineering measures form the local rock mass-anti-fault(LRAF)method.A numerical method was used to investigate the influence of LRAF methods on the stress and displacement fields of the surrounding rock,and the anti-fault effect was ***,the mechanism of action of the anchor cable was verified using a three-dimensional numerical *** numerical results indicated that the anchor cable and grouting modification reduced the displacement gradient of the local surrounding rock near the tunnels crossing ***,anchor cable and grouting modifications changed the stress field of the rock mass in the modified *** tensile stress field of the rock mass in the modified anchor cable area was converted into a compressive stress *** stress field in the modified grouting area changed from shear stress in the fault slip direction to tensile stress in the axial tunnel *** anti-fault cavern resisted the dislocation displacement and reduced the maximum dislocation magnitude,displacement gradient,and shear *** the three advanced engineering measures,the anchor cable was the core of the three advanced engineering *** anchor cable,combined with other LRAF measures,can form an artificial safety island at the cross-fault position of the rock mass to protect the *** research results provide a new supporting idea for the surrounding rock of tunnels crossing active strike-slip faults.

关键词： anti-fault effect engineering measures LRAF method stress and displacement field tunnel-crossing active faults

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泥水盾构穿越基坑漏压处理措施

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铁道建筑 2016年第12期56卷 49-52页

作者：萧健澄广深港客运专线有限责任公司广东广州510623

新建广深港客运专线双洞单线泥水平衡式盾构隧道,在穿越深圳地区一在建物流公司基坑时出现漏压的情况。为解决此问题,根据场地和工程条件,选择合适的加固方案——地表深孔袖阀管注浆加固地层方案,并制定相应的钻孔处理措施和盾构施工应... 详细信息

新建广深港客运专线双洞单线泥水平衡式盾构隧道,在穿越深圳地区一在建物流公司基坑时出现漏压的情况。为解决此问题,根据场地和工程条件,选择合适的加固方案——地表深孔袖阀管注浆加固地层方案,并制定相应的钻孔处理措施和盾构施工应对措施,确保深孔袖阀管注浆质量,保证了盾构安全顺利通过基坑。

关键词：泥水盾构基坑漏压袖阀管注浆加固

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小学数学课堂教师提问策略的研究

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当代家庭教育 2021年第19期 103-104页

作者：肖建成福建省漳州市南靖县金山中心小学

数学是小学阶段一门重要的基础学科,在组织小学数学教学活动时,教师必须重视课堂教学的趣味性,通过有效的提问帮助学生理解数学知识。面对传统教学模式下提问方式单一、学生参与互动的机会不均等的问题,教师应当调整课堂提问策略,通过... 详细信息

数学是小学阶段一门重要的基础学科,在组织小学数学教学活动时,教师必须重视课堂教学的趣味性,通过有效的提问帮助学生理解数学知识。面对传统教学模式下提问方式单一、学生参与互动的机会不均等的问题,教师应当调整课堂提问策略,通过提问互动的方式了解学生的学习动态,并有针对性地调整教学思路,激发学生数学学习兴趣,提高学生数学学习能力。本文简单分析了当前小学数学课堂教学中教师提问存在的问题,结合笔者实际教学经验,提出了小学数学课堂上教师提问的有效策略,以供参考。

关键词：小学数学课堂提问策略分析

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Longitudinal Cooling Force Measurements in HIRFL-CSRm

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2008年第1期 143-144页

作者： Mao Lijun Yang xiaodong Xia Jiawen Li Jie Li Guohong Yuan Youjin Liu Yong Yang jiancheng xiao Chen Li Ke Tian Maohui Li Pen

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流程工业CIMS故障诊断软件工具中故障诊断方法库开发研究

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计算机工程与应用 2001年第20期37卷 129-131页

作者：苏建成萧德云王朝辉清华大学自动化系北京100084

文章首先介绍了流程工业CIMS故障诊断的特点及针对该特点设计的面向流程工业CIMS的故障诊断软件工具FDSK。概述了当前几类故障诊断算法和集成多种方法建立方法库的的思想。文中提出了建立故障诊断方法库的体系结构、特点、实现方法、统... 详细信息

文章首先介绍了流程工业CIMS故障诊断的特点及针对该特点设计的面向流程工业CIMS的故障诊断软件工具FDSK。概述了当前几类故障诊断算法和集成多种方法建立方法库的的思想。文中提出了建立故障诊断方法库的体系结构、特点、实现方法、统一管理及调用过程。

关键词：流程工业 CIMS 故障诊断软件工具故障诊断方法库

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Bi_(12)SiO_(20)∶Mn,Cr晶体的杂质诱导光色特性

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无机材料学报 1992年第2期7卷 137-144页

作者：徐良瑛刘建成束碧云肖兵中国科学院上海硅酸盐研究所

采用提拉法、电阻炉加热铂坩埚,a 轴取向生长纯的 Bi_(12)SiO_(20)和 Bi_(12)SiO_(20)∶0.05wt·%MnO_2,0.02wt·%Cr_2O_3(BSO∶Mn,Cr)晶体。电子顺磁共振谱指出:光照后激活心电荷态各自为 Mn^(5+)和 Cr^(4+);其 g 因子大小分别为2.0009和1.9616。光照前 BSO∶Mn 在410～750nm 有吸收带,并和吸收边重叠,它相应于 Mn^(5+)离子 ~3A_2→~3T_2,~3T_1跃迁,Mn^(5+)和 Mn^(4+)同时在晶体里存在。光照后,Mn^(5+)离子吸收增加。另外,BSO∶Cr 光色效应可通过 Cr^(5+)→Cr^(4+)电荷传输过程来解释。纯 BSO 晶体粉末有一个 g=2.0109峰宽为75G 的 ESR 带,这带被归为本征捕获空穴心。

关键词：晶体顺磁共振光谱半导体

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Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanxiu xiao Wei xiao Di Hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

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财务共享模式下的财务智能化协作系统设计研究

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佳木斯大学学报（自然科学版） 2021年第2期39卷 157-161页

作者：李庭华萧健诚广州城建职业学院经济与管理学院广东广州510925

随着人工智能等新技术不断发展,财务共享模式也迎来了新的历史发展纪元。针对建筑企业协作施工财务管理过程中的现状,提出了基于支持向量机的协作施工合同资金支付预警模型和基于BP神经网络的分包商信用信用评价模型,选择7个风险指标并... 详细信息

随着人工智能等新技术不断发展,财务共享模式也迎来了新的历史发展纪元。针对建筑企业协作施工财务管理过程中的现状,提出了基于支持向量机的协作施工合同资金支付预警模型和基于BP神经网络的分包商信用信用评价模型,选择7个风险指标并设置三种风险等级,建立6个信用评价指标一级指标和20个二级指标。通过模型训练和测试,结果表明具有明显有效性,显著提高资金风险管控能力和保证信用评价的客观性。

关键词：财务共享向量机 BP神经网络协作施工核算

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Tumor inflammation-specific self-amplifying fluorescent molecular probes induce an anti-tumor immune response

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Science China Chemistry 2025年第1期 273-287页

作者： Shuguang Yang Lijun Hu Hong xiao Zecong xiao Xintao Shuai PCFM Lab of Ministry of Education School of Materials Science and Engineering Sun Yat-sen University Department of Ultrasound The Fifth Affiliated Hospital Sun Yat-sen University Department of Medical Ultrasound The Third Affiliated Hospital of Sun Yat-sen University Nanomedicine Research Center The Third Affiliated Hospital of Sun Yat-sen University

Enhancing the concentration of exogenous molecular drugs within the tumor microenvironment through enzyme-catalyzed polymerization presents a novel strategy for cancer therapy. Nonetheless, the optimization of the catalytic efficiency is often impeded by the inefficient expression of enzymes. Herein, we reported a self-amplifying fluorescent molecular probe, Bis-HTPICG, for photodynamic therapy(PDT) and subsequent PDT-induced immunoreaction. The Bis-HTP-ICG probe possesses a noticeable enzyme-catalyzed polymerization facilitated by myeloperoxidase(MPO), a crucial enzyme secreted by neutrophils at inflammation sites. Upon exposure to laser irradiation, Bis-HTP-ICG showed a high PDT efficacy, inducing an acute inflammatory response that stimulates further recruitment of neutrophils and then elevated MPO secretion. The heightened level of MPO enhances the accumulation of the Bis-HTP-ICG via self-polymerization or binding with intratumoral proteins following MPO enzyme catalysis, instigating a self-amplifying chain reaction cycle involving Bis-HTP-ICG, neutrophils and ***, PDT efficiently incites immunogenic cell death(ICD) in tumor cells, initiating an anti-tumor immune response including dendritic cells(DCs) maturation, T cell proliferation and reprogramming of tumor-associated neutrophils(TANs). This work portrays a promising strategy for self-amplification of fluorescent molecular probes through adjustable enzyme levels,potentially offering a unique avenue to enhance the tumor accumulation of molecular drugs for improved tumor therapy.

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Design of a cationic accelerator enabling ultrafast ion diffusion kinetics in aqueous zinc-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 377-384页

作者： Yawei xiao Qianqian Gu Haoyu Li Mengyao Li Yude Wang National Center for International Research on Photoelectric and Energy Materials School of Materials and Energy Yunnan University Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources School of Chemistry and Chemical Engineering Hainan University College of Chemical Engineering Fuzhou University Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies Yunnan University

Aqueous zinc-ion batteries are highly favored for grid-level energy storage owing to their low cost and high safety,but their practical application is limited by slow ion *** address this,a strategy has been developed to create a cation-accelerating electric field on the surface of the cathode to achieve ultrafast Zn2+diffusion *** employing electrodeposition to coat MoS2on the surface of BaV6O16·3H2O nanowires,the directional built-in electric field generated at the heterointerface acts as a cation accelerator,continuously accelerating Zn2+diffusion into the active *** optimized Zn2+diffusion coefficient in CC@BaV-6O16·3H2O@MoS2(7.5×10～8cm2s-1) surpasses that of most reported V-based ***,MoS2serving as a cathodic armor extends the cycling life of the Zn-CC@BaV6O16·3H2O@MoS2full batteries to over 10000 *** work provides valuable insights into optimizing ion diffusion kinetics for high-performance energy storage devices.

关键词： Internal electric field Cationic accelerator Ion diffusion kinetics Cathode modification strategy Aqueous zinc ion battery

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