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| 1 | Modeling rock specimens through 3D printing: Tentative experiments and prospects显示文摘Current developments in 3D printing (3DP) technology provide the opportunity to produce rock-like specimens and geotechnical models through additive manufacturing, that is, from a file viewed with a computer to a real object. This study investigated the serviceability of3 DP products as substitutes for rock specimens and rock-type materials in experimental analysis of deformation and failure in the laboratory. These experiments were performed on two types of materials as follows:(1) compressive experiments on printed sand-powder specimens in different shapes and structures, including intact cylinders, cylinders with small holes, and cuboids with pre-existing cracks, and(2) compressive and shearing experiments on printed polylactic acid cylinders and molded shearing blocks. These tentative tests for 3DP technology have exposed its advantages in producing complicated specimens with special external forms and internal structures, the mechanical similarity of its product to rock-type material in terms of deformation and failure, and its precision in mapping shapes from the original body to the trial sample(such as a natural rock joint). These experiments and analyses also successfully demonstrate the potential and prospects of 3DP technology to assist in the deformation and failure analysis of rock-type materials, as well as in the simulation of similar material modeling experiments. | Quan Jiang Xiating Feng Lvbo Song Yahua Gong Hong Zheng Jie Cui | 2016 | Acta Mechanica Sinica2016，32，1： | 19 |
| 2 | NUMERICAL MODELING FOR COUPLED THERMO-HYDRO-MECHANICAL AND CHEMICAL PROCESSES (THMC) OF GEOLOGICAL MEDIA——INTERNATIONAL AND CHINESE EXPERIENCES显示文摘The coupled thermo-hydro-mechanical and chemical (THMC) processes of stress/deformation,fluid flow,temperature and geochemical reactions of the geological media,namely fractured rocks and soils,play an important role in design,construction,operation and environmental impact assessments of rock and soil engineering works such as underground nuclear waste repositories,oil/gas production and storage,geothermal energy extraction,landslides and slope stability,hydropower and water conservancy complexes,etc. This paper presents an overview of the international and Chinese experiences in numerical modeling of the coupled THMC processes for both the state-of-the-knowledge,remaining challenges and possible future prospects. | Jing Lanru,Feng Xiating (Institute of Rock and Soil Mechanics,The Chinese Academy of Sciences, Wuhan 430071 China) | 2003 | 岩石力学与工程学报2003，22，10： | 17 |
| 3 | In situ experiments on width and evolution characteristics of excavation damaged zone in deeply buried tunnels显示文摘The seven long tunnels of Jinping II hydropower station are deeply buried.The width and evolution characteristics of excavation damaged zone(EDZ) are the key problem to the design of tunnels excavation and supports.In order to study this problem,several specific experimental tunnels with different overburden and geometric sizes were excavated at this site.Digital borehole camera,sliding micrometer,cross-hole acoustic wave equipment and acoustic emission apparatus were adopted.This paper introduced the comprehensive in situ experimental methods through pre-installed facilities and pre-drilled boreholes.Typical properties of the surrounding rock mass,including cracks,deformation,elastic wave and micro fractures,were measured during the whole process of the tunnel excavation.The width and characteristics of formation and evolution of tunnels EDZ were analyzed under different construction methods involving of TBM and drilling and blasting,the test tunnels were excavated by full-face or two benches.The relationships between EDZ and tunnel geometry sizes,overburden and excavation method were described as well.The results will not only contribute a great deal to the analysis of rock mass behavior in deeply buried rock mass,but also provide direct data for support design and rockburst prediction. | LI ShaoJun 1,FENG XiaTing 1,LI ZhanHai 3,CHEN BingRui 1,JIANG Quan 1,WU ShiYong 2,HU Bin 2 &XU JinSong 2 1 State Key Laboratory of Geomechanics and Geotechinical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China 2 Ertan Hydropower Development Company,Ltd.,Chengdu 610051,China 3 School of Resources and Civil Engineering,Northeastern University,Shenyang 110004,China | 2011 | Science China(Technological Sciences)2011，54，S1： | 13 |
| 4 | Studies on the evolution process of rockbursts in deep tunnels显示文摘This paper focuses on the evolution processes of different types of rockbursts occurring in deep tunnels. A series of laboratory tests and in-situ monitoring in deep tunnels excavated by tunnel boring machine (TBM) and drill-and-blast (D&B) method have been conducted to understand the mechanisms and processes of the evolution of different types of rockbursts, including strain rockburst, strain-structure slip rockburst, immediate rockburst and time-delayed rockburst. Three different risk assessment methods are proposed to evaluate the intensity and potential failure depth of rockbursts. These methods can be applied before excavation and the results can be updated according to the real-time information during excavation. Two micro-seismicity based real-time warning systems have been established for predicting various intensities of rockbursts, such as slight, moderate, intensive and extremely intensive rockbursts. Meanwhile, the probability and intensity of the rockburst are also given. The strategy for excavation and support design has been suggested for various intensities of rockbursts before excavation. The strategy for dynamic control of the rockburst evolution process is also proposed according to the monitoring results. The methodology has been successfully applied to rockburst risk reduction for deep tunnels at Jinping II hydropower project. The results have illustrated the applicability of the proposed methodology and techniques concerning rockbursts. | Xiating Feng Bingrui Chen Shaojun Li Chuanqing Zhang Yaxun Xiao Guangliang Feng Hui Zhou Shili Qiu Zhouneng Zhao Yang Yu Dongfang Chen Huajun Ming | 2012 | Journal of Rock Mechanics and Geotechnical Engineering2012，4，4： | 11 |
| 5 | Influence of microwave treatment on mechanical behaviour of compact basalts under different confining pressures显示文摘The realisation of microwave-induced fracturing of hard rocks has potential signiflcance for microwave-assisted mechanical rock fracturing and stress release in deep rock masses.In this context,compact basalts were treated by microwave heating in a multi-mode cavity at a frequency of 2450 MHz,and then,we investigated the mechanical behaviour of basalt samples after microwave treatment under uniaxial compression and conventional triaxial compression(CTC)tests.After microwave exposure,cracks appeared on the surface and inside of the rock sample,and the temperature of the sample's surface was unevenly distributed.The results show that the conventional triaxial compressive strength(CTCS)of basalt samples decreased linearly with microwave exposure time,and the higher the confining pressure,the smaller the reduction in the strength of basalt samples after microwave treatment.Under uniaxial compression,microwave exposure greatly affected the axial deformation,suggesting that deformation resistance of the samples gradually decreases with increasing microwave exposure time.Under triaxial compression,some microcracks induced by microwave exposure closed due to the effect of confining pressure,resulting in the confining pressure inhibiting any rightward shift of the axial deformation curve.Furthermore,under uniaxial compression,the elastic modulus and Poisson's ratio of basalts also decreased in a quasi-linear manner with elapsed microwave exposure time.Under triaxial compression,microwave exposure has slight influence on elastic modulus and Poisson's ratio.After microwave treatment,the changes in rock strength and deformation mainly result from changes in between the mineral structures.Confining pressure results in the closure of microcracks produced by microwave exposure,so that effects of microwave treatment on strength and deformation decrease,thus reducing the influence on elastic constants.The cohesion decreases with increasing microwave exposure time and shows an approximately linear decrease over time.In the basalt samples,new microcracks in various directions generated by microwave exposure can increase the discreteness of test results,while the discreteness of test results caused by microcracks gradually reduces with increasing confining pressure. | Gaoming Lu Xiating Feng Yuanhui Li Xiwei Zhang | 2020 | Journal of Rock Mechanics and Geotechnical Engineering2020，12，2： | 7 |
| 6 | NEURAL NETWORK ASSESSMENT OF ROCKBURST RISKS FOR DEEP GOLD MINES IN SOUTH AFRICA显示文摘NEURALNETWORKASSESSMENTOFROCKBURSTRISKSFORDEEPGOLDMINESINSOUTHAFRICA①FengXiatingColegeofResourcesandCivilEnginering,Northeast... | Feng XiatingCollege of Resources and Civil Engineering,Northeastern University, Shenyang 110006, P. R. ChinaS. WebberCSIR Mining Technology, Johannesburg, South AfricaM. U. OzbayDepartment of Mining Engineering,University of the Witwatersr | 1998 | 中国有色金属学会会刊:英文版1998，8，2： | 6 |
| 7 | Synthesis,Spectroscopy and Antibacterial Activity of Supermolecular Compounds of Organotitanium Substituted Heteropolytungstates Containing 8-Quinolinol显示文摘Parent compounds of cyclopentadienyltitanium substituted heteropolytungstates with Keggin structure,An[(CpTi)XW11O39]·xH2O(A=Me4N,K;X=P,Si,Co;Cp=η5-C5H5) were synthesized in aqueous phase.By allowing parent heteropoly compounds to react with protonated 8-quinolinol,the title supermolecular compounds(C9H8NO)mAn[(CpTi)XW11O39]·xH2O(A=Me4N,H;X=P,Si,Co) were synthesized.The title compounds were characterized by means of elementary analysis,IR,UV,1H NMR,XRD and TG-DSC.The results indicate that the title compounds are new heteropoly compounds,and there is a charge transfer interaction between the organic cation and heteropoly anion.The results obtained from thermal analysis show that QCpTiPW,QCpTiSiW and QCpTiCoW begin to decompose at 212.4,194.2 and 171.2 ℃,respectively.The results obtained from antibacterial test reveal that QCpTiSiW has the best antibacterial activity,and the MIC values of QCpTiSiW against Escherichia coli and Staphylococcus aurous are 64.0 and 0.500 μg·mL-1,respectively. | FENG Chang-gen XIONG Yu-di LIU Xiat | 2011 | 光谱学与光谱分析2011，31，5： | 5 |
| 8 | THEORETICAL MODEL OF EFFECTIVE STRESS COEFFICIENT FOR ROCK/SOIL-LIKE POROUS MATERIALS显示文摘Physical mechanisms and influencing factors on the effective stress coeffcient for rock/soil-like porous materials are investigated,based on which equivalent connectivity index is proposed.The equivalent connectivity index,relying on the meso-scale structure of porous ma-terial and the property of liquid,denotes the connectivity of pores in Representative Element Area(REA).If the conductivity of the porous material is anisotropic,the equivalent connec-tivity index is a second order tensor.Based on the basic theories of continuous mechanics and tensor analysis,relationship between area porosity and volumetric porosity of porous materials is deduced.Then a generalized expression,describing the relation between effective stress coeff-cient tensor and equivalent connectivity tensor of pores,is proposed,and the expression can be applied to isotropic media and also to anisotropic materials.Furthermore,evolution of porosity and equivalent connectivity index of the pore are studied in the strain space,and the method to determine the corresponding functions in expressions above is proposed using genetic algorithm and genetic programming.Two applications show that the results obtained by the method in this paper perfectly agree with the test data.This paper provides an important theoretical support to the coupled hydro-mechanical research. | Kai Zhang Hui Zhou Dawei Hu Yang Zhao Xiating Feng | 2009 | Acta Mechanica Solida Sinica2009，22，3： | 5 |
| 9 | A coupled elasto-plastic-damage mechanical model for marble显示文摘A profound understanding of the mechanical behaviors of marble is very important for the design and construction of deep diversion tunnels in Jinping II hydropower station.In this paper,a coupled elasto-plastic-damage mechanical model is presented for Jinping marble.Firstly,the experimental investigations on Jinping marble are summarized.Then,based on the framework of continuum damage and plastic theories,a general mechanical model is proposed to predict the mechanical responses of Jinping marble.The proposed model is used to simulate the triaxial compressive tests,and there is a general good agreement between experimental data and numerical predictions in a qualitative manner.The proposed model is able to capture the main features of Jinping marble observed in experiments,such as progressive yielding process,damage induced by plastic distortion,dilation,elastic degradation and stress sensitivity. | ZHOU Hui 1,ZHANG Kai 2 & FENG XiaTing 1 1 State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China 2 State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining&Technology,Xuzhou 221008,China | 2011 | Science China(Technological Sciences)2011，54，S1： | 4 |
| 10 | A HYDRO-MECHANICAL-CHEMICAL COUPLING MODEL FOR GEOMATERIAL WITH BOTH MECHANICAL AND CHEMICAL DAMAGES CONSIDERED显示文摘A general framework of hydro-mechanical-chemical coupling model is proposed for geomaterial subjected to the dual effects of mechanical loading and chemical degradation. Mechanical damage due to microcracks in solid matrix and chemical damage induced by the increase of porosity due to dissolution of matrix minerals as well as their interactions are considered. A special model is proposed for sandstone. The reaction rate is formulated within the framework of mineral reaction kinetics and can thus take into account different dissolution mechanisms of three main mineral compositions under different pH values. The increase of porosity is physically defined by the dissolution of mineral composition and the chemical damage is related to the increase of porosity. The mechanical behavior is characterized by unified plastic damage and viscoplastic damage modeling. The effective stress is used for describing the effect of pore pressure. The elastic parameters and plastic evolution as well as viscoplastic evolution are dependent on chemical damage. The advection, which is coupled with mechanical damage and chemical damage, is considered as the dominant mechanism of mass transfer. The application of model proposed is from decoupled experiments to fully coupled experiment. The model offers a convenient approach to describing the hydro-mechanical-chemical coupled behavior of geomaterial. | Dawei Hu Hui Zhou Qizhi Hu Jianfu Shao Xiating Feng Haibin Xiao | 2012 | Acta Mechanica Solida Sinica2012，25，4： | 4 |
| 11 | Unloading performances and stabilizing practices for columnar jointed basalt:A case study of Baihetan hydropower station显示文摘The columnar jointed rock mass(CJR), composed of polygonal cross-sectional columns cut by several groups of joints in various directions, was exposed during the excavations of the Baihetan hydropower station, China. In order to investigate the unloading performances and the stability conditions during excavation of the columns, an experimental field study was performed. Firstly, on-site investigations indicated that the geotechnical problems, including rock relaxation, cracking and collapse, were the most prominent for the CJR Class I that contains intensive joint network and the smallest column sizes.Comprehensive field tests, including deformation measurement by multi-point extensometers, ultrasonic wave testing, borehole television observation and stress monitoring of rock anchors, revealed that the time-dependent relaxation of the CJRs was marked. The practical excavation experiences for the Baihetan columnar jointed rock masses, such as blasting scheme, supporting time of shotcrete and rock bolts, were presented in the excavations of the diversion tunnels. These detailed investigations and practical construction experiences can provide helpful information for similar geotechnical works in jointed rock mass. | Qixiang Fan Xiating Feng Wenlin Weng Yilin Fan Quan Jiang | 2017 | Journal of Rock Mechanics and Geotechnical Engineering2017，9，6： | 4 |
| 12 | MESHLESS METHOD OF DUAL RECIPROCITY HYBRID RADIAL BOUNDARY NODE METHOD FOR ELASTICITY显示文摘Combining the radial point interpolation method(RPIM),the dual reciprocity method(DRM) and the hybrid boundary node method(HBNM),a dual reciprocity hybrid radial boundary node method(DHRBNM) is proposed for linear elasticity.Compared to DHBNM,RPIM is exploited to replace the moving least square(MLS) in DHRBNM,and it gets rid of the deficiency of MLS approximation,in which shape functions lack the delta function property,the boundary condition can not be applied easily and directly and it's computational expense is high.Besides,different approximate functions are discussed in DRM to get the interpolation property,in which the accuracy and efficiency for different basis functions are compared.Then RPIM is also applied in DRM to replace the conical function interpolation,which can greatly improve the accuracy of the present method.To demonstrate the effectiveness of the present method,DHBNM is applied for comparison,and some numerical examples of 2-D elasticity problems show that the present method is much more effective than DHBNM. | Fei Yan Xiating Feng Hui Zhou 1(State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Science,Wuhan 430071,China) | 2010 | Acta Mechanica Solida Sinica2010，23，5： | 2 |
| 13 | DEVELOPMENT AND APPLICATIONS OF THE ELASTO-PLASTIC CELLULAR AUTOMATON显示文摘The paper presents the advancement and applications of the elasto-plastic cellular automaton (EPCA), a simulator for rock mechanics and rock engineering. The most significant feature of EPCA lies in its 'down-top' way of dealing with nonlinear behaviors of rocks. The theory, the basic idea and associated developments, including the definition of cellular automaton, the heterogeneous material model, constitutive relations, failure criteria, the post-yield softening scheme, the thermo-hydro-mechanical coupling process, are described. The applications are presented to show the ability of EPCA to model the rock failure process, fiuid fiow, heat transfer, and the coupled thermo-hydro-mechanical (THM) process etc. | Pengzhi Pan Xiating Feng Hui Zhou | 2012 | Acta Mechanica Solida Sinica2012，25，2： | 2 |
| 14 | In situ monitoring of rockburst nucleation and evolution in the deeply buried tunnels of Jinping II hydropower station显示文摘 | L1 SHAOJUN FENG XIATING L1 ZHANHAI | 2002 | Engineering Geology2002，，137138： | 1 |
| 15 | A Top Pilot Tunnel Preconditioning Method for the Prevention of Extremely Intense Rockbursts in Deep Tunnels Excavated by TBMs显示文摘 | Chuanqing Zhang Xiating Feng Hui Zhou Shili Qiu Wenping Wu | 2012 | Rock Mechanics and Rock Engineering2012，，3： | 1 |
| 16 | Theinfluence of the intermediate principal stress on rockfailure behavior:a numerical study显示文摘 | PAN PENGZHI FENG XIATING HUDSON J A | 2012 | EngineeringGeology2012，124，： | 1 |
| 17 | Prematureovarianfailureanimalmodelsbydrugs显示文摘 | GaoH YangJ HanB XiaT | 2007 | 国医论坛2007，22，3： | 1 |
| 18 | Dynamic feedback analysis and design optimization for large underground powerhouse显示文摘 | FENG Xiating JIANG Quan XIANG Tianbing | 2009 | Rock Mechanics for Underground Mining2009，10，1： | 1 |
| 19 | Forecast to Coal/Gas outburst area through pattern recognition method显示文摘 | NAN Cunquan FENG Xiating | 2005 | Journal of Northeastern University2005，25，9： | 1 |
| 20 | LiuJL(刘纪麟),Studyontherelationbe-tweencytoplasmicmalesterilityinmaizeandcn-resistantrespira-tionintissues(玉米胞质雄性不育与组织抗氰呼吸关系的研究)[J]显示文摘 | XiaT(夏涛) | | 中国农业科学0，，： | 1 |
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