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International journal of Minerals,Metallurgy and Materials 2024年第8期31卷 1767-1787页

作者： Shunchuan wu jiaxin wang Shihuai Zhang Shigui Huang Lei Xia Qianping zhao Faculty of Land Resource Engineering Kunming University of Science and TechnologyKunming 650093China Key laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area MNRKunming 650093China Yunnan Key laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area Kunming 650093China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China

Strength theory is the basic theory for calculating and designing the strength of engineering materials in civil,hydraulic,mechanical,aerospace,military,and other engineering ***,the comprehensive study of the generalized nonlinear strength theory(GNST)of geomaterials has significance for the construction of engineering rock *** paper reviews the GNST of geomaterials to demonstrate the research status of nonlinear strength characteristics of geomaterials under complex stress ***,it systematically summarizes the research progress of GNST(classical and empirical criteria).Then,the latest research the authors conducted over the past five years on the GNST is introduced,and a generalized three-dimensional(3D)nonlinear Hoek‒Brown(HB)criterion(NGHB criterion)is proposed for practical *** criterion can be degenerated into the existing three modified HB criteria and has a better prediction *** strength prediction errors for six rocks and two in-situ rock masses are 2.0724%-3.5091%and 1.0144%-3.2321%,***,the development and outlook of the GNST are expounded,and a new topic about the building strength index of rock mass and determining the strength of in-situ engineering rock mass is *** summarization of the GNST provides theoretical traceability and optimization for constructing in-situ engineering rock mass strength.

关键词： rock mechanics rock mass strength strength theory failure criterion Hoek-Brown criterion intermediate principal stress deviatoric plane smoothness and convexity

Effects of synthetic site water on bentonite-concrete system for a potential nuclear waste repository

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journal of rock mechanics and Geotechnical Engineering 2024年第9期16卷 3786-3797页

作者： zhao Sun Yong-Gui Chen wei-Min Ye Qiong wang Dong-Bei wu Zhen-Yu Yin Key laboratory of Geotechnical and Underground Engineering of Ministry of Education Department of Geotechnical EngineeringTongji UniversityShanghai200092China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina School of Chemical Science and Engineering Tongji UniversityShanghai200092China

In high-level nuclear waste(HLw)repositories,concrete and compacted bentonite are designed to be employed as buffer materials,which may raise a problem of interactions between concrete and *** interactions would lead to mineralogy transformation and buffer performance decay of bentonite under the near field environment conditions in a repository.A small-scale experimental setup was established to simulate the concrete-bentonite-site water interaction system from a potential nuclear waste repository in *** types of mortars were prepared to correspond to the concrete at different degradation *** results permit the determination of the following:(1)The macroproperties of Gaomiaozi(GMZ)bentonite(*** pressure,permeability,the final dry density,and water content of reacted samples);(2)The composition evolution of fluids from the synthetic site water-concrete-bentonite interaction systems;(3)The sample characterization including Fourier transform infrared spectroscopy(FTIR)and X-ray powder diffraction(XRD).Under the infiltration of the synthesis Beishan site water(BSw),the swelling pressure of bentonite decreases slowly with time after reaching its second swelling *** flux decreases with time during the infiltrations,and it tends to be stable after more than 120 *** to the cation exchange reactions in the BSw-concrete-bentonite systems,the divalent cations(Ca and Mg)were consumed,and the monovalent cations(Na and K)were *** dissolution of minerals in the bentonite such as albite causes Si increasing in the pore *** was concluded that the hydro-mechanical property degradation of bentonite takes place when it comes into contact with concrete mortar,even under low-pH groundwater *** soil dispersion,the uneven water content,and the uneven dry density in bentonite samples may partly contribute to the swelling decay of ***,the direct contact with concrete has an obvious effect on the performance

关键词： Mock-up device GMZ bentonite Site water-concrete-bentonite system Geochemistry Buffer performance

Comprehensive,Continuous,and Vertical Measurements of Seawater Constituents with Triple-Field-of-View High-Spectral-Resolution Lidar

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Research 2024年第2期2023卷 191-201页

作者： Kai Zhang Yatong Chen Hongkai zhao Zhongping Lee Emmanuel Boss Iwona Stachlewska Davide Dionisi Cedric jamet Paolo D.Girolamo Aleksey Malinka Chengchong jiang Hongda wu Lingyun wu Feitong Chen Xiaolei Zhu Nanchao wang Chuxiao Chen Qun Liu Lan wu Yudi Zhou weibiao Chen Dong Liu Ningbo Research Institute State Key Laboratory of Modern Optical InstrumentationCollege of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China ZjU-Hangzhou Global Scientific and Technological lnnovation Center Zhejang UniversityHangzhou 311200China Donghai laboratory.Zhoushan 316021 China State Key Lab of Marine Environmental Science College of Ocean and Earth SciencesXiamen UniversityXiamen 361102China School of Marine Sciences University of MaineOronoME 04469-5741USA Faculty of Physics University of WarsawWarsaw 02093Poland institute of Marine Sciences Italian National Research CouncilRome 00133Italy Universitédu Littoral Cote d'Opale CNRSUniv.LilleIRDUMR 8187-LOG-Laboratoire d'Oceanologie et de GéosciencesWimereux F-6293 Francen Institute Scuola di Ingegneria Universita della BasilicataPotenza 85100Italy Institute of Physics National Academy of Sciences of BelarusMinsk 220072Belarus Key laboratory of Space Laser Communication and Detection Technology Shanghai lnstitute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Inteligent Optics&Photonics Research Center Jiaxing Research Institute Zhejiang UniversityJiaxing 314000China jiaxing Key laboratory of Photonic Sensing&Intelligent Imaging Jiaxing 314000China

Measuring the characteristics of seawater constituent is in great demand for studies of marine ecosystems and ***,existing techniques based on remote sensing or in situ samplings present various tradeoffs with regard to the diversity,synchronism,temporal-spatial resolution,and depth-resolved capacity of their data ***,we demonstrate a novel oceanic triple-field-of-view(FOV)high-spectral-resolution lidar(HSRL)with an iterative retrieval *** technique provides,for the first time,comprehensive,continuous,and vertical measurements of seawater absorption coefficient,scattering coefficient,and slope of particle size distribution,which are validated by simulations and field ***,it depicts valuable application potentials in the accuracy improvement of seawater classification and the continuous estimation of depth-resolved particulate organic carbon *** triple-FOV HSRL with high performance could greatly increase the knowledge of seawater constituents and promote the understanding of marine ecosystems and biogeochemistry.

关键词： lidar Vertical seawater

STCF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai L.P.An R.Aliberti Q.An X.Z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko Z.H.Bu F.M.Cai H.Cai j.j.Cao Q.H.Cao X.Cao Z.Cao Q.Chang K.T.Chao D.Y.Chen H.Chen H.X.Chen j.F.Chen K.Chen L.L.Chen P.Chen S.L.Chen S.M.Chen S.Chen S.P.Chen w.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen H.Y.Cheng j.Cheng S.Cheng T.G.Cheng j.P.Dai L.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko j.M.Dias D.Z.Ding L.Y.Dong w.H.Dong V.Druzhinin D.S.Du Y.j.Du Z.G.Du L.M.Duan D.Epifanov Y.L.Fan S.S.Fang Z.j.Fang G.Fedotovich C.Q.Feng X.Feng Y.T.Feng j.L.Fu j.Gao Y.N.Gao P.S.Ge C.Q.Geng L.S.Geng A.Gilman L.Gong T.Gong B.Gou w.Gradl j.L.Gu A.Guevara L.C.Gui A.Q.Guo F.K.Guo j.C.Guo j.Guo Y.P.Guo Z.H.Guo A.Guskov K.L.Han L.Han M.Han X.Q.Hao j.B.He S.Q.He X.G.He Y.L.He Z.B.He Z.X.Heng B.L.Hou T.j.Hou Y.R.Hou C.Y.Hu H.M.Hu K.Hu R.j.Hu w.H.Hu X.H.Hu Y.C.Hu j.Hua G.S.Huang j.S.Huang M.Huang Q.Y.Huang w.Q.Huang X.T.Huang X.j.Huang Y.B.Huang Y.S.Huang N.Hüsken V.Ivanov Q.P.ji j.j.jia S.jia Z.K.jia H.B.jiang j.jiang S.Z.jiang j.B.jiao Z.jiao H.j.jing X.L.Kang X.S.Kang B.C.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin Y.Lei E.Levichev C.H.Li C.Li D.Y.Li F.Li G.Li G.Li H.B.Li H.Li H.N.Li H.j.Li H.L.Li j.M.Li j.Li L.Li L.Li L.Y.Li N.Li P.R.Li R.H.Li S.Li T.Li w.j.Li X.Li X.H.Li X.Q.Li X.H.Li Y.Li Y.Y.Li Z.j.Li H.Liang j.H.Liang Y.T.Liang G.R.Liao L.Z.Liao Y.Liao C.X.Lin D.X.Lin X.S.Lin B.j.Liu C.w.Liu D.Liu F.Liu G.M.Liu H.B.Liu j.Liu j.j.Liu j.B.Liu K.Liu K.Y.Liu K.Liu L.Liu Q.Liu S.B.Liu T.Liu X.Liu Y.w.Liu Y.Liu Y.L.Liu Z.Q.Liu Z.Y.Liu Z.w.Liu I.Logashenko Y.Long C.G.Lu j.X.Lu N.Lu Q.F.Lü Y.Lu Y.Lu Z.Lu P.Lukin F.j.Luo T.Luo X.F.Luo Y.H.Luo H.j.Lyu X.R.Lyu j.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas S.Malde D.Matvienko Z.X.Meng R.Mitchell A.Nefediev Y.Nefedov S.L.Olsen Q.Ouyang P.Pakhlov G.Pakhlova X.Pan Y.Pan E.Passemar Y.P.Pei H.P.Peng L.Peng X.Y.Peng X.j.Peng K.Peters S.Pivovarov E.Pyata B.B.Qi Y.Q.Qi w.B.Qian Y.Qian C.F.Qiao j.j.Qin j.j.Qin L.Q.Qin X.S.Qin T.L.Qiu j.Rademacker C.F.Redmer H.Y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Physics Novosibirsk 630090Russia CAS Key laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central South University Changsha 410083China China University of Geosciences Wuhan 430074China China University of Mining and Technology Xuzhou 221116China École Polytechnique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of Technology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy 11 Pokrovsky Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Automotive Technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China jilin University Changch

The superτ-charm facility(STCF)is an electron–positron collider proposed by the Chinese particle physics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory—the BEPCII,providing a unique platform for exploring the asymmetry of matter-antimatter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the Standard *** STCF project in China is under development with an extensive R&D *** document presents the physics opportunities at the STCF,describes conceptual designs of the STCF detector system,and discusses future plans for detector R&D and physics case studies.

关键词： electron–positron collider tau-charm region high luminosity STCF detector conceptual design

裂隙岩体冻胀力演化解析模型与裂纹亚临界扩展分析

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岩石力学与工程学报 2024年第S1期43卷 3439-3449页

作者：李聪张新宙吴亮亮谢天赵凯艺武汉轻工大学土木工程与建筑学院湖北武汉430023

为揭示寒区边坡岩体裂隙扩展后冻胀力的演化机制与规律,开展裂隙岩体冻胀力演化解析模型研究具有重要意义。结合弹性力学、复变函数、弹塑性断裂力学理论推导裂隙岩体冻胀力演化解析模型。分析裂隙尺寸、冻结速率、水分迁移率等因素对... 详细信息

为揭示寒区边坡岩体裂隙扩展后冻胀力的演化机制与规律,开展裂隙岩体冻胀力演化解析模型研究具有重要意义。结合弹性力学、复变函数、弹塑性断裂力学理论推导裂隙岩体冻胀力演化解析模型。分析裂隙尺寸、冻结速率、水分迁移率等因素对失稳断裂前冻胀力演化过程的影响,在对失稳断裂后冻胀力进行估算的基础上研究冻胀力演化机制与全过程特征,并将解析计算结果与试验测试结果进行对比分析。结果表明:(1)所提出的冻胀力解析模型可以计算裂隙扩展后的冻胀力演化过程,合理解释冻胀力波动性变化机制,在一定程度上可为裂隙抗冻性评价提供依据;(2)断裂失稳前,最大冻胀力随裂隙长度的增加而减小,达到最大冻胀力所需时间随裂隙宽度增加而增加;冻结速率增加时会出现最大冻胀力减小;水分迁移率增加时,断裂失稳前的最大冻胀力增加,达到最大冻胀力所需时间也增加;(3)裂纹亚临界扩展与断裂失稳会引起冻胀力变化,裂隙冻胀力演化过程具有波动性变化特征;当冻结过程不发生失稳断裂时,冻胀力呈现波动上升的特征;当冻结过程中存在断裂失稳时,冻胀力呈现先增加后减小的特征。

关键词：岩石力学裂隙岩体冻胀力解析模型亚临界扩展波动变化

考虑施工中断影响的隧道力学响应解析模型研究

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工程力学 2024年第10期41卷 169-179页

作者：吴奎邵珠山李成龙赵南南储昭飞西安建筑科技大学理学院陕西西安710055 南京港宁置业有限公司江苏南京210011 武汉大学土木建筑工程学院湖北武汉430072

在具有显著时效变形特征的软岩地层中进行隧道挖掘时,因不可抗力因素导致的施工中断可能会对隧道后方衬砌产生不利影响,从而增加了隧道施工的风险。因此,准确评估隧道纵向施工中断,对硐室围岩和衬砌长期稳定性的影响具有重要意义。为揭... 详细信息

在具有显著时效变形特征的软岩地层中进行隧道挖掘时,因不可抗力因素导致的施工中断可能会对隧道后方衬砌产生不利影响,从而增加了隧道施工的风险。因此,准确评估隧道纵向施工中断,对硐室围岩和衬砌长期稳定性的影响具有重要意义。为揭示隧道施工中断条件下围岩与衬砌相互作用的力学机制,采用应力释放系数将三维隧道开挖问题等效为二维平面应变问题,并基于经典的负指数型应力释放系数表达式,建立了考虑施工中断工况时改进的表达式。进一步,利用广义Kelvin流变模型表征围岩的时效变形行为,推导了隧道施工过程中考虑施工中断和支护结构滞后安装的时空变形解析解。通过在郑万高铁荣家湾隧道中的应用,上述理论解答的正确性得到了很好的验证。基于理论解答,探讨了施工中断持续时间、中断开始时间以及开挖速度等因素对隧道位移和衬砌压力的影响。参数分析结果表明,由掌子面推进引起的衬砌压力可占总压力的17.3%。施工中断持续时间和开始时间对隧道位移和衬砌压力的演化规律具有重要影响,但对最终的位移和压力的影响可忽略不计。施工中断前的开挖速度越大,最终由掌子面承担的围岩压力减小。当应力释放系数达到0.8时,再次重新挖掘的速度对隧道稳定性几乎没有影响。

关键词：隧道流变开挖停止相互作用解析解

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基于流固耦合的压气机转子叶片非同步振动分析

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力学学报 2024年第3期56卷 635-643页

作者：汪松柏霍嘉欣赵星陈勇吴亚东张军上海交通大学机械与动力工程学院上海200240 中国航发四川燃气涡轮研究院成都610500

压气机转子叶片非同步振动是近年来发现的一类新气动弹性问题,表现为叶片振动频率与转频不同步且具有锁频现象,严重影响航空发动机的可靠性和运行安全,目前对其产生机理并不完全清楚.为了深入研究压气机内不稳定流动与叶片非同步振动之... 详细信息

压气机转子叶片非同步振动是近年来发现的一类新气动弹性问题,表现为叶片振动频率与转频不同步且具有锁频现象,严重影响航空发动机的可靠性和运行安全,目前对其产生机理并不完全清楚.为了深入研究压气机内不稳定流动与叶片非同步振动之间的耦合机制,基于时间推进的方法建立了多级压气机转子叶片全环的双向流固耦合模型,数值研究了刚性叶片与非同步振动柔性叶片的非定常流场、气流激励频率和结构响应特征,揭示了压气机转子叶片非同步振动的流固耦合机制.结果表明:近失速工况下,转子叶尖吸力面径向分离涡的周期性脱落及再附过程是导致叶尖压力剧烈波动的主要原因,其3倍谐波激励频率与转子一阶弯曲固有频率接近,提供了叶片非同步振动的初始气流激励源.叶片非同步振动发生时,位移响应表现为等幅值的极限环特征,振动以一阶弯曲模态主导,径向分离涡产生的非整数倍气流激励频率及其谐波频率最终锁定为叶片一阶弯曲固有频率,非同步振动的运动胁迫使得相邻通道叶尖流场周向趋于一致.研究成果及对叶片非同步振动流固耦合机制的认识可为压气机内部不稳定流动诱发的叶片振动失效分析提供有益参考.

关键词：压气机转子叶片非同步振动流固耦合极限环非定常流动

不同大变形等级的层状软岩隧道施工模型试验与数值模拟研究

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岩石力学与工程学报 2024年第2期43卷 454-467页

作者：赵亮亮杨文波潘文韬吴枋胤王芝茏杨自成西南交通大学交通隧道工程教育部重点试验室四川成都610031 四川绵九高速公路有限责任公司四川绵阳610041

为探究复杂艰险山区层状软岩隧道非对称破坏特征,提出不同大变形等级下层状软岩隧道的合理施工变形控制技术,以九绵高速公路典型层状软岩隧道为工程背景,建立针对复杂艰险山区层状软岩隧道的大变形等级划分标准,在此基础上通过模型试验... 详细信息

为探究复杂艰险山区层状软岩隧道非对称破坏特征,提出不同大变形等级下层状软岩隧道的合理施工变形控制技术,以九绵高速公路典型层状软岩隧道为工程背景,建立针对复杂艰险山区层状软岩隧道的大变形等级划分标准,在此基础上通过模型试验和数值模拟,就不同大变形等级下施工工法和支护方式对层状软岩隧道力学行为的影响开展系列研究。研究结果表明:在应力场–层理方向耦合影响下,层状软岩隧道受力与变形空间非对称分布最不利位置位于层理面法向或切向位置,并随着大变形等级(轻微、中等和强烈)的增大,隧道非对称力学特征越明显;此外,施工工法和支护方式对不同大变形等级的层状软岩隧道变形与受力改善效果存在差异,故针对3种大变形等级的层状软岩隧道,分别提出二台阶施工+单层初支+短锚杆支护、三台阶施工+单层初支+长短锚杆支护、三台阶预留核心土施工+双层初支+长短锚杆支护的建议施工变形控制技术。

关键词：隧道工程层状软岩大变形等级隧道变形控制非对称性分析

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动态冲击下红砂岩蠕变特性及损伤本构模型

岩土力学 2024年第6期45卷 1608-1622页

作者：樊赖宇吴志军储昭飞翁磊王智洋刘泉声陈结武汉大学土木建筑工程学院湖北武汉430072 武汉大学岩土与结构工程安全湖北省重点实验室湖北武汉430072 重庆大学资源与安全学院重庆400044

为研究岩石在动态扰动下的蠕变特性,在自行研发的冲击扰动蠕变试验装置上,对细粒红砂岩开展了多级冲击扰动蠕变试验,分析了不同蠕变应力与扰动能量下瞬时变形与蠕变行为,结合间接法得到了扰动能量对长期强度的影响。结果表明:动态扰动... 详细信息

为研究岩石在动态扰动下的蠕变特性,在自行研发的冲击扰动蠕变试验装置上,对细粒红砂岩开展了多级冲击扰动蠕变试验,分析了不同蠕变应力与扰动能量下瞬时变形与蠕变行为,结合间接法得到了扰动能量对长期强度的影响。结果表明:动态扰动在较低的蠕变应力下使试样致密,而当蠕变应力超过一定的应力阈值后加剧试样内部的损伤恶化,其引起的瞬时变形与蠕变应变则随蠕变应力表现出先减后增的规律;随着动态扰动能量的增加,试样的破坏应变越大,但长期强度越低;引入长期强度与扰动能量的相关性、动态扰动单元和扰动-损伤黏性元件,建立了黏塑性扰动损伤蠕变模型,结合试验数据验证了该模型的准确性,该模型可以准确地描述砂岩在静态恒载和动态扰动组合作用下的瞬态变形和蠕变行为。该研究成果对于钻爆法隧道的支护设计以及安全生产具有重要的理论意义与应用前景。

关键词：扰动蠕变试验蠕变特性动态扰动损伤蠕变模型