|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Mechanism of rock burst caused by fracture of key strata during irregular working face mining and its prevention methods显示文摘To study the occurrence mechanism of rock burst during mining the irregular working face,the study took irregular panel 7447 near fault tectonic as an engineering background.The spatial fracture characteristic of overlying strata was analyzed by Winkler elastic foundation beam theory.Furthermore,the influence law of panel width to suspended width and limit breaking span of key strata were also analyzed by thin plate theory.Through micro-seismic monitoring,theoretical analysis,numerical simulation and working resistance of support of field measurement,this study investigated the fracture characteristic of overlying strata and mechanism of rock burst in irregular working face.The results show that the fracture characteristic of overlying strata shows a spatial trapezoid structure,with the main roof being as an undersurface.The fracture form changes from vertical‘‘O-X'type to transverse‘‘O-X'type with the increase of trapezoidal height.From the narrow mining face to the wide mining face,the suspended width of key strata is greater than its limit breaking width,and a strong dynamic load is produced by the fracture of key strata.The numerical simulation and micro-seismic monitoring results show that the initial fracture position of key strata is close to tailgate 7447.Also there is a high static load caused by fault tectonic.The dynamic and static combined load induce rock burst.Accordingly,a cooperative control technology was proposed,which can weaken dynamic load by hard roof directional hydraulic fracture and enhance surrounding rock by supporting system. | Zengqiang Yang Chang Liu Hengzhong Zhu Fuxing Xie Linming Dou Jianhang Chen | 2019 | International Journal of Mining Science and Technology2019，29，6： | 12 |
| 2 | BASIC EQUATIONS FOR THERMO-ELECTROCHEMISTRYAND THE ENTROPY CHANGE OF THE STANDARDHYDROGEN ELECTRODE REACTION显示文摘BASICEQUATIONSFORTHERMO-ELECTROCHEMISTRYANDTHEENTROPYCHANGEOFTHESTANDARDHYDROGENELECTRODEREACTIONFANGZheng,ZHANGHengzhong,ZHA... | FANG Zheng, ZHANG Hengzhong, ZHANG Pingming, HUANG Shengtang,GUO Li and HU Guoqiang(Department of Chemistry, Central South University of Technology, Changsha 410O83, China) | 1996 | Acta Metallurgica Sinica(English Letters)1996，9，3： | 2 |
| 3 | DETERMINATION OF THE ENTROPY CHANGE FOR ELECTRODE REACTION AND DILUTE ENTHALPY OF SOME IONS BY THERMO-ELETROCHEMICAL TECHNOLOGY显示文摘DETERMINATIONOFTHEENTROPYCHANGEFORELECTRODEREACTIONANDDILUTEENTHALPYOFSOMEIONSBYTHERMO-ELETROCHEMICALTECHNOLOGY*FangZhengGuoL... | Fang Zheng Guo Lin Zhang Hengzhong Zhang Pingming(Department of Chemisty, Central South University of Technology, Changsha 410083, China) | 1998 | Journal of Central South University1998，10，1： | 2 |
| 4 | Effects of antiepileptic drugs on reproductive endocrine function, sexual function and sperm parameters in Chinese Hart men with epilepsy显示文摘 | Xiaotian X Hengzhong Z Yao X | 2013 | J Clin Neurosci2013，20，11： | 1 |
| 5 | New kinetic model for the nanocrystalline anatase-to-rutile transformation revealing rate dependence on number of particles显示文摘 | ZHANG Hengzhong BANNFIELD J F | 1999 | American Mineralogist1999，84，： | 1 |
| 6 | PREPARATION AND PROPERTIES OF THE MICRO-POWDER PHASE AND A NEW PHASE OF AMMONIUM TETRAMOLYBDATES显示文摘PREPARATIONANDPROPERTIESOFTHEMICROPOWDERPHASEANDANEWPHASEOFAMMONIUMTETRAMOLYBDATES①YinZhoulan,ChenQiyuan,ZhangHengzhong,Zhou... | Yin, Zhoulan Chen, Qiyuan Zhang, Hengzhong Zhou, Guizhi Li, Yuangao Zhang, Pingmin | 1997 | 中国有色金属学会会刊:英文版1997，7，1： | 1 |
| 7 | Thermodynamic analysis of phase stability of nanocrystalline titania显示文摘 | ZHANG Hengzhong BANNFIELD J F | 1998 | Journal of Materials Chemistry1998，8，： | 1 |
| 8 | Phase transformation of nanocrystalline anatase-to-rutile via combined interface and surface nucleation显示文摘 | ZHANG Hengzhong BANNFIELD J F | 2000 | Journal of Materials Research2000，15，： | 1 |
| 9 | A model for exploring particle size and temperature dependence of excess heat capacities of nanocrystalline substances显示文摘 | ZHANG Hengzhong BANNFIELD J F | 1998 | NanoStructured Materials1998，10，： | 1 |
| 10 | 附录:《鉴别野草和农作物的特异光电子引擎》原文显示文摘 | Kamal Alameh Sreten Askraba Arie Paap John Rowe Yannan Shen Hengzhong Yan | 2010 | 物理2010，，10： | 1 |
| 11 | Evolution of hydrothermal explosions at Rehai geothermal field, Tengchong volcanic region, China 显示文摘 | Shangguan Zhiguan Zhao Ciping Li Hengzhong | 2005 | Geothermics2005，34，4： | 1 |
| 12 | Design and fabrication of laminated–graded zirconia self-lubricating composites显示文摘 | Yuan Fang Yongsheng Zhang Junjie Song Hengzhong Fan Litian Hu | 2013 | Materials and Design2013，，： | 1 |
| 13 | Phase Stability and Transformation in Titania Nanoparticles in Aqueous Solutions Dominated by Surface Energy 显示文摘 | Michael P finnegan Zhang Hengzhong | 2007 | The Journal of Physical Chemistry C2007，111，： | 1 |
| 14 | Understanding polymorphic phase transformation behavior during growth of nanocrystalline aggregates: insights from TiO2显示文摘 | Jillian F Banfield | 2000 | J Phys Chem B2000，104，15： | 1 |
| 15 | Immobilization of enzymes in mesoporous materials:controlling the entrance to nanospace显示文摘 | LEI Jie FAN Jie YU Hengzhong | 2004 | Microporous Mesoporous Mater2004，73，： | 1 |
| 16 | New Discovery of ~1866 Ma High-temperature Mylonite in the Helanshan Complex: Marking a Late-stage Ductile Shearing in the Khondalite Belt, North China Craton显示文摘Objective The Khondalite Belt is a nearly E–W-trending Paleoproterozoic Himalayan-type orogen in the Western Block of the North China Craton. It is regarded as a result of the collision between the northern Yinshan Block and the southern Ordos Block at ~1.95 Ga, which led to the formation of the united basement of the Western Block(e.g., Zhao et al., 2005;Yin et al., 2011). The Khondalite Belt has undergone long-term continent-continen collisional orogenic processes, and a remarkable series of late-stage orogen-parallel ductile shear zones developed(e.g., Huang et al., 2013;Gong et al., 2014). | QIAO Hengzhong YIN Changqing ZHANG Jian QIAN Jiahui WU Shangjing | 2021 | Acta Geologica Sinica(English Edition)2021，95，4： | 0 |
| 17 | Bioinspired PcBN/hBN fibrous monolithic ceramic:High-temperature crack resistance responses and self-lubricating performances显示文摘The high strength and toughness of natural materials are mainly determined by a combination of mechanisms operating at different length scales,which can be used as a strategy to reduce the intrinsic brittleness of ceramics.Inspired by the architectures of bamboo,the polycrystalline cubic boron nitride/hexagonal boron nitride(PcBN/hBN)fibrous monolithic ceramics with a long fiber arrangement structure was constructed with PcBN fiber cells and hBN cell boundaries,and its crack resistance responses and tribological performances were investigated.The composite ceramic failed in a non-brittle manner with the rising resistance curve(R-curve)behavior,which was attributed to multiscale crack effects in the hierarchical architecture.The maximum crack growth toughness was extremely high(approximately 21 MPa×m^(1/2)),corresponding to a 270%increase over the crack initiation toughness.Excellent fracture resistance could be retained even above 1000℃.Moreover,the composite ceramic exhibited low and stable friction coefficients(approximately 0.33)when paired with a Si_(3)N_(4)pin at high temperature(1000℃),owing to the lubrication function of hBN cell boundaries with weak van der Waals forces and a small amount of liquid B_(2)O_(3)produced.As a result,a synergistic improvement of mechanical and tribological properties at high temperature(1000℃)was realized by combining bionic structure and tribological design.It provides important theoretical and technical support for expanding the application of self-lubricating composite ceramics in harsh environments. | Shu-na CHEN Hengzhong FAN Yunfeng SU Jicheng LI Junjie SONG Litian HU Yongsheng ZHANG | 2022 | Journal of Advanced Ceramics2022，11，9： | 0 |
| 18 | THERMODYNAMIC ANALYSES FOR S-H_2O SYSTEM AT 25℃显示文摘THERMODYNAMICANALYSESFORSH2OSYSTEMAT25℃①YiQingfeng,ChenQiyuan,ZhangHengzhong,ZhangPingminDept.ofChemistry,CentralSouthUniver... | Yi Qingfeng, Chen Qiyuan, Zhang Hengzhong, Zhang Pingmin Dept. of Chemistry, Central South University of Technology, Changsha 410083 | 1997 | 中国有色金属学会会刊:英文版1997，7，1： | 0 |
| 19 | HIGH-TEMPERATURE HEAT CAPACITIES OF THE PHASES IN Y-Ba-Cu-O SYSTEM显示文摘HIGH-TEMPERATUREHEATCAPACITIESOFTHEPHASESINY-Ba-Cu-OSYSTEMZhangHengzhong;FangZheng;ZhangPingmin;ChenXinmin(DepartmentofChemis... | Zhang Hengzhong Fang Zheng Zhang Pingmin Chen Xinmin(Department of Chemistry,Central South University of Technology,Changsha 410083) | 1995 | 中国有色金属学会会刊:英文版1995，5，4： | 0 |
| 20 | Synthesis and mechanical and elevated temperature tribological properties of a novel high-entropy(TiVNbMoW)C_(4.375) with carbon stoichiometry deviation显示文摘High-entropy carbides are a nascent group of ceramics that are promising for high-temperature applications due to the combination of good stability,high hardness(H),high strength,and superior creep resistance that they display.Due to high melting points and low lattice diffusion coefficients,however,the high-entropy carbides are usually difficult to consolidate to a nearly full density.To cope with this challenge,herein,binary carbides including TiC,V_(8)C_(7),NbC,Mo_(2)C,and WC with different carbon stoichiometry were used to prepare dense high-entropy(TiVNbMoW)C_(4.375),and the influence of carbon vacancy on formation ability and mechanical properties of carbon-deficient high-entropy(TiVNbMoW)C_(4.375) were investigated.Intriguingly,although the starting binary carbides have different crystal structures and carbon stoichiometry,the as-prepared high-entropy material showed a rock-salt structure with a relatively high density(98.1%)and good mechanical properties with hardness of 19.4±0.4 GPa and fracture toughness(KIC)of 4.02 MPa·m^(1/2).More importantly,the high-entropy(TiVNbMoW)C_(4.375) exhibited low coefficient of friction(COF)at room temperature(RT)and 800℃.Wear rate(W)gradually increased with the temperature rising,which were attributed to the formation of low-hardness oxidation films at high temperatures to aggravate wear.At 800℃,lubricating films formed from sufficient oxidation products of V_(2)O_(5) and MoO_(3) effectively improved tribological behavior of the high-entropy(TiVNbMoW)C_(4.375).Wear mechanisms were mainly abrasive wear resulting from grain pullout and brittle fracture as well as oxidation wear generated from high-temperature reactions.These results are useful as valuable guidance and reference to the synthesis of high-entropy ceramics(HECs)for sliding parts under high-temperature serving conditions. | Jicheng LI Yanchun ZHOU Yunfeng SU Shuna CHEN Qiuan SUN Hengzhong FAN Junjie SONG Litian HU Yongsheng ZHANG | 2023 | Journal of Advanced Ceramics2023，12，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员