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| 1 | Failure mechanism and stability control of a large section of very soft roadway surrounding rock shear slip显示文摘The measured data and simulation test phenomenon of surrounding rock deformation and failure at the project site indicate that shear failure which firstly occurs in surrounding rock, block slip and second shear failure are the root cause of deformation and damage of supporting structure of the surrounding rock at a large scale. We derived limit load of surrounding rock shear slip failure and reasonable support resistance of given load by means of shear slip line field theory, discussed the main factors which influence the limit load of surrounding rock. Shear slip line field and limit load of circular tunnel surrounding rock were obtained by means of physical simulation test, which agreed well with the theoretical analysis results. Based on the theoretical analysis and physical simulation test, the cause deformation and failure at large scale of Xinshanghai No. 1 coal mine big section ingate was analyzed, and the shear failure resistance and block slip in surrounding rock were proposed as the core technical supporting ideas. Proper range of supporting resistance which came from calculation was suggested. The support scheme which is mainly composed of large grouting anchor, sprayed anchor net support technique and full-face grille concrete finally ended the dilemma of repeated failure and mending of ingate and created critical conditions for smooth production in the coal mine. | Meng Bo Jing Hongwen Chen Kunfu Su Haijian | 2013 | International Journal of Mining Science and Technology2013，23，1： | 22 |
| 2 | Deformation and failure characteristics of anchorage structure of surrounding rock in deep roadway显示文摘This paper investigated the stress evolution,displacement field,local deformation and its overall distribution,and failure characteristics of the anchorage structure of surrounding rock with different rockbolt spacing through the model experiments.The influences of the pre-tightening force and spacing of rockbolt on the support strength of the anchorage structure of surrounding rock were analyzed by the simulation using FLAC3D numerical software.The support scheme of the excavated roadway was then designed,and the effectiveness of this support scheme was further verified by the displacement measurement of the roadway.The results showed that the maximum displacement between the roof and floor of the west wing track roadway in Kouzidong coal mine,China is about 42 mm,and the maximum displacement between its both sides is about 72 mm,indicating that the support scheme proposed in this study can ensure the stability and safety of the excavated roadway. | Hongwen Jing Jiangyu Wu Qian Yin Ke Wang | 2020 | International Journal of Mining Science and Technology2020，30，5： | 19 |
| 3 | Physical and mechanical properties of sandstone containing a single fissure after exposure to high temperatures显示文摘In order to investigate the physical and mechanical properties of sandstone containing fissures after exposure to high temperatures,fissures with different angles α were prefabricated in the plate sandstone samples,and the processed samples were then heated at 5 different temperatures.Indoor uniaxial compression was conducted to analyze the change rules of physical properties of sandstone after exposure to high temperature,and the deformation,strength and failure characteristics of sandstone containing fissures.The results show that,with increasing temperature,the volume of sandstone increases gradually while the quality and density decrease gradually,and the color of sandstone remains basically unchanged while the brightness increases markedly when the temperature is higher than 585 ℃;the peak strength of sandstone containing fissures first decreases then increases when the temperature is between 25℃and 400℃.The peak strain of sandstone containing fissures increases gradually while the average modulus decreases gradually with increasing temperature,and the mechanical properties of sandstone show obvious deterioration after 400 ℃.The peak strain of sandstone containing fissures increases gradually while the average modulus decreases gradually with increasing temperature;with increasing angle αof the fissure,the evolution characteristics of the macro-mechanical parameters of sandstone are closely related to the their own mechanical properties.When the temperature is 800 ℃,the correlation between the peak strength and average modulus of sandstone and the angle α of the fissure is obviously weakened.The failure modes of sandstone containing fissures after high temperature exposure are of three different kinds including:tensile crack failure,tensile and shear cracks mixed failure,and shear crack failure.Tensile and shear crack mixed failure occur mainly at low temperatures and small angles;tensile crack failure occurs at high temperatures and large angles. | Zhu Tantan Jing Hongwen Su Haijian Yin Qian Du Mingrui Han Guansheng | 2016 | International Journal of Mining Science and Technology2016，26，2： | 15 |
| 4 | Numerical investigation on the sensitivity of jointed rock mass strength to various factors显示文摘The mechanical properties of jointed rock masses, such as strength, deformation and the failure mechanism, can be understood only by studying the sensitivity of jointed rock mass strength (both the peak and residual strengths) to the factors that affect it. An orthogonal design of uniaxial compression tests was simulated on eighteen groups of jointed rock specimens having different geometric and mechanical properties using RFPA2D (Rock Failure Process Analysis) code. The results show that the peak strength is controlled by the geometric parameters of the joints, but that the residual strength is controlled by the mechanical prop- erties of the joint interfaces. The failure mode of jointed rock specimens is mainly shear failure. Joint quantity, or density, is the most important index that affects jointed rock mass strength and engineering quality. | NIU Shuangjian JING Hongwen HU Kun YANG Dafang | 2010 | Mining Science and Technology2010，20，4： | 14 |
| 5 | Fracture evolution characteristics of sandstone containing double fissures and a single circular hole under uniaxial compression显示文摘The uniaxial compression experiments on the sandstone samples containing double fissures and a single circular hole were carried out by using electro-hydraulic servo universal testing machine to investigate the effect of rock bridge angle β and fissure angle α on mechanical properties and evolution characteristics of cracks.The results show that the peak strength,peak strain and elastic modulus of defected specimens decrease comparing with those for intact sample,and show a decreased trend firstly and then increase with β changing from 0° to 90°.The peak strength and elastic modulus achieve the minimum value as the rock bridge angle is 60°,while the peak strain reaches the minimum value with the rock bridge angle of 45°.The crack initiation of tested rock samples occurs firstly in stress concentration areas at tips of prefabricated fissures under uniaxial compression,and then propagates constantly and coalescences with the prefabricated hole.Some secondary cracks initiate and propagate as well until buckling failure happens.The rock bridge angle has a great influence on crack initiation,coalescence,final failure mode,crack initiation stress and transfixion stress.The peak strength varies significantly,while the elastic modulus and peak strain change slightly,and the failure modes are also different due to the influence of fissure angle. | Chen Minliang Jing Hongwen Ma Xiujun Su Haijian Du Mingrui Zhu Tantan | 2017 | International Journal of Mining Science and Technology2017，27，3： | 11 |
| 6 | Stress evolution and support mechanism of a bolt anchored in a rock mass with a weak interlayer显示文摘By applying experimental method, the bolt stress and supporting mechanism is studied during the deformation process of a rock mass containing a weak interlayer. The force measuring bolt is installed manually and instrumented five pairs of symmetrical strain gauges. The experimental results show that the fully grouted bolt suffers tensile, compressive, bending and shear stress at the same time. The bolt stress evolution is closely related to the deformation stages of the rock mass which are very gradually varying stage, gradually varying stage at the pre-peak and suddenly varying stage at the post peak stage.The axial compressive stress in the bolt is mainly induced by the moment. Thus, in most cases the axial compressive stress is distributed on one side of the bolt. For axial stresses, induced by the axial force and the bending moment at the post-peak stage, three types of changing are observed, viz. increasingincreasing type, decreasing-increasing type and increasing-decreasing type. The stress characteristics of the bolt section in the weak interlayer are significantly different from those in the hard rock. The failure models of the anchored bolt are tensile failure and shear failure, respectively. The bolt not only provides constraints on the free surface of the rock mass, but also resists the axial and lateral loading by the bending moment. This study provides valuable guidelines for bolting support design and its safety assessment. | Ding Shuxue Jing Hongwen Chen Kunfu Xu Guo'an Meng Bo | 2017 | International Journal of Mining Science and Technology2017，27，3： | 9 |
| 7 | Strength and deformation behaviors of bedded rock mass under bolt reinforcement显示文摘The mechanism of bolt support is an important topic in mining engineering and slope treatment. The artificial material and loading system were self-developed to study the influence of bedding cohesion and bolt number on the anchoring behavior of bedded rock mass. The results show that, both peak strength and elasticity modulus increase gradually with the increase of bedding cohesion and bolt number. The axial stress–strain curve of bedded rock mass under the reinforcement of bolts presents the features of strain-softening and secondary strengthening. Finally, anchoring behavior of bedded rock mass with different bolt numbers was simulated by using FLAC3 D numerical program and the results were compared with the experimental results. This study can provide certain bases to the stability control and support design of bedded rock mass in roadway. | Wenxin Zhu Hongwen Jing Lijun Yang Bing Pan Haijian Su | 2018 | International Journal of Mining Science and Technology2018，28，4： | 7 |
| 8 | Numerical simulations of failure behavior around a circular opening in a non-persistently jointed rock mass under biaxial compression显示文摘Pre-existing discontinuities change the mechanical properties of rock masses,and further influence failure behavior around an underground opening.In present study,the failure behavior in both Inner and Outer zones around a circular opening in a non-persistently jointed rock mass under biaxial compression was investigated through numerical simulations.First,the micro parameters of the PFC^(3D) model were carefully calibrated using the macro mechanical properties determined in physical experiments implemented on jointed rock models.Then,a parametrical study was undertaken of the effect of stress condition,joint dip angle and joint persistency.Under low initial stress,the confining stress improves the mechanical behavior of the surrounding rock masses;while under high initial stress,the surrounding rock mass failed immediately following excavation.At small dip angles the cracks around the circular opening developed generally outwards in a step-path failure pattern;whereas,at high dip angles the surrounding rock mass failed in an instantaneous intact rock failure pattern.Moreover,the stability of the rock mass around the circular opening deteriorated significantly with increasing joint persistency. | Yang Xuxu Jing Hongwen Chen Kunfu | 2016 | International Journal of Mining Science and Technology2016，26，4： | 6 |
| 9 | 20 Years Advances in Preparation of Potassium Salts from Potassic Rocks:A Review显示文摘Long-term research on key techniques of clean utilization of potassic rocks from over twenty localities has been performed to settle the shortage of soluble potassium resources in China. The results show that K-feldspar as the principal mineral enriched in potassium could be decomposed in the media of Ca(OH)_2, NaOH, KOH-H_2O solution via hydrothermal treatment, into tobermorite, hydroxylcancrinite, and kalsilite respectively. By further processing, these compounds are feasible for being as slow-release carrier of potassium nitrate, extracting alumina, and preparing farm-oriented fertilizers of potassium sulphate and nitrate. Correspondingly, the filtrate is KOH,(Na, K)_2SiO_3, and K_2SiO_3 solution, from which potassium carbonate, sulphate, nitrate, and phosphate could be easily fabricated. As NaO H and KOH are recycled in the processing chains by causticizing sodium and/or potassium metasilicate solutions, the hydrothermal alkaline techniques as developed in this research have several advantages as lower consumption of disposable mineral resources and energy, maximized utilization of potassic mineral resources, as well as clean productions etc. Based on the approaches presented in this paper, the technical system of efficiently utilizing insoluble potassium resources has been established. The hydrothermal alkaline methods are feasible to be industrialized on a large scale, thus resulting in decreasing imports of potash fertilizers, improving the pattern of potassium fertilizer consumption, and enhancing the supplying guarantee of potassium resource in China. | MA Hongwen YANG Jing SU Shuangqing LIU Meitang ZHENG Hong WANG Yingbin QI Hongbin ZHANG Pan YAO Wengui | 2015 | Acta Geologica Sinica(English Edition)2015，89，6： | 5 |
| 10 | Strength and deformation behaviors of veined marble specimens after vacuum heat treatment under conventional triaxial compression显示文摘The mechanical behaviors of rocks affected by high temperature and stress are generally believed to be significant for the stability of certain projects involving rocks, such as nuclear waste storage and geothermal resource exploitation. In this paper, veined marble specimens were treated to high temperature treatment and then used in conventional triaxial compression tests to investigate the effect of temperature, confining pressure, and vein angle on strength and deformation behaviors. The results show that the strength and deformation parameters of the veined marble specimens changed with the temperature, presenting a critical temperature of 600℃. The triaxial compression strength of a horizontal vein(β = 90°) is obviously larger than that of a vertical vein(β = 0°). The triaxial compression strength,elasticity modulus, and secant modulus have an approximately linear relation to the confining pressure. Finally,Mohr–Coulomb and Hoek–Brown criteria were respectively used to analyze the effect of confining pressure on triaxial compression strength. | Haijian Su Hongwen Jing Qian Yin Liyuan Yu Yingchao Wang Xingjie Wu | 2017 | Acta Mechanica Sinica2017，33，5： | 5 |
| 11 | Growth characteristics of spherical titanium oxide nanoparticles during the rapid gaseous detonation reaction显示文摘 | Ning Luo Hongwen Jing Zhanguo Ma Yingchao Wang Guilei Sun Weidong Liu | 2016 | Particuology2016，14，3： | 4 |
| 12 | Mouse embryonic stem cells have increased capacity for replication fork restart driven by the specific Filia-Floped protein complex显示文摘Pluripotent 干细胞(PSC ) 在他们的快速的增长和作为结果的染色体不稳定性期间怀有组成的 DNA 复制应力在再生药妨碍他们的应用。理解复制的规章的机制在 PSC 强调反应因此是重要的。这里,我们报导胚胎的干细胞(转换字符) 是的那只老鼠比在解决复制应力的区分的房间优异。明确地,转换字符利用唯一的跳动 Filia 的蛋白质高效地支持阻止的复制的重启的复杂依赖者的机制分叉,因此维持 genomic 稳定性。转换字符特定的跳动 Filia 的建筑群在正常条件下面住在复制叉上。复制应力刺激他们的招募到阻止 Filia 的 151 残余是的叉和丝氨酸以一种 ATR 依赖的方式的 phosphorylated。这修正使跳动 Filia 的建筑群能充当功能的脚手架,它然后通过双机制支持拖延的叉重启:复制叉重启蛋白质, Blm,和刺激 ATR kinase 激活的两提高的招募。在 Blm 小径,脚手架招募 E3 ubiquitin ligase, Trim25,到阻止的复制叉,并且接着, Trim25 通过 ubiquitination 在阻止的复制叉拴住并且专注 Blm。在区分的房间,到复制叉和 ATR 发信号的激活的 Trim25-Blm 建筑群的招募由于转换字符特定的跳动 Filia 的支架的缺乏是更不柔韧的。因此,我们的学习表明转换字符利用另外、唯一的规章的层高效地支持阻止的叉重启并且维持 genomic 稳定性。 | Bo Zhao Weidao Zhang Yixian Cun Jingzheng Li Yan Liu Jing Gao Hongwen Zhu Hu Zhou Rugang Zhang Ping Zheng | 2018 | Cell Research2018，28，1： | 4 |
| 13 | Fast determination of meso-level mechanical parameters of PFC models显示文摘To solve the problems of blindness and inefficiency existing in the determination of meso-level mechanical parameters of particle flow code (PFC) models, we firstly designed and numerically carried out orthogonal tests on rock samples to investigate the correlations between macro-and meso-level mechanical parameters of rock-like bonded granular materials. Then based on the artificial intelligent technology, the intelligent prediction systems for nine meso-level mechanical parameters of PFC models were obtained by creating, training and testing the prediction models with the set of data got from the orthogonal tests. Lastly the prediction systems were used to predict the meso-level mechanical parameters of one kind of sandy mudstone, and according to the predicted results the macroscopic properties of the rock were obtained by numerical tests. The maximum relative error between the numerical test results and real rock properties is 3.28% which satisfies the precision requirement in engineering. It shows that this paper provides a fast and accurate method for the determination of meso-level mechanical parameters of PFC models. | Guo Jianwei Xu Guoan Jing Hongwen Kuang Tiejun | 2013 | International Journal of Mining Science and Technology2013，23，1： | 4 |
| 14 | Cable-truss supporting system for gob-side entry driving in deep mine and its application显示文摘In order to solve the large deformation controlling problem for surrounding rock of gob-side entry driving under common cable anchor support in deep mine, site survey, physical modeling experiment, numerical simulation and field measurement were synthetically used to analyze the deformation and failure characteristics of surrounding rock. Besides, applicability analysis, prestress field distribution characteristics of surrounding rock and the control effect on large deformation of surrounding rock were also further studied for the gob-side entry driving in deep mine using the cable-truss supporting system. The results show that, first, compared with no support and traditional bolt anchor support, roof cable-truss system can effectively restrain the initiation and propagation of tensile cracks in the roof surrounding rock and arc shear cracks in the two sides, moreover, the broken development of surrounding rock, roof separation and extrusion deformation between the two sides of the roadway are all controlled; second, a prestressed belt of trapezoidal shape is generated in the surrounding rock by the cable-truss supporting system, and the prestress field range is wide. Especially, the prestress concentration belt in the shallow surrounding rock can greatly improve the anchoring strength and deformation resisting capability of the rock stratum;third, an optimized support system of ‘‘roof and side anchor net beam, roof cable-truss supporting system and anchor cable of the narrow coal pillar' was put forward, and the support optimization design and field industrial test were conducted for the gob-side entry driving of the working face 5302 in Tangkou Mine, from which a good supporting effect was obtained. | Yin Qian Jing Hongwen Dai Dapeng Zhu Tantan Zhao Honghui Meng Bo | 2016 | International Journal of Mining Science and Technology2016，26，5： | 3 |
| 15 | Effect of the mineral spatial distribution heterogeneity on the tensile strength of granite:Insights from PFC3D-GBM numerical analysis显示文摘The mechanical characteristics of crystalline rocks are affected by the heterogeneity of the spatial distribution of minerals.In this paper,a novel three-dimensional(3D)grain-based model(GBM)based on particle flow code(PFC),i.e.PFC3D-GBM,is proposed.This model can accomplish the grouping of mineral grains at the 3D scale and then filling them.Then,the effect of the position distribution,geometric size,and volume composite of mineral grains on the cracking behaviour and macroscopic properties of granite are examined by conducting Brazilian splitting tests.The numerical results show that when an external load is applied to a sample,force chains will form around each contact,and the orientation distribution of the force chains is uniform,which is independent of the external load level.Furthermore,the number of high-strength force chains is proportional to the external load level,and the main orientation distribution is consistent with the external loading direction.The main orientation of the cracks is vertical to that of the high-strength force chains.The geometric size of the mineral grains controls the mechanical behaviours.As the average grain size increases,the number of transgranular contacts with higher bonding strength in the region connecting both loading points increases.The number of high-strength force chains increases,leading to an increase in the stress concentration value required for the macroscopic failure of the sample.Due to the highest bonding strength,the generation of transgranular cracks in quartz requires a higher concentrated stress value.With increasing volume composition of quartz,the number of transgranular cracks in quartz distributed in the region connecting both loading points increases,which requires many high-strength force chains.The load level rises,leading to an increase in the tensile strength of the numerical sample. | Tao Zhang Liyuan Yu Yuxuan Peng Hongwen Jing Haijian Su Jiangbo Wei | 2023 | Journal of Rock Mechanics and Geotechnical Engineering2023，15，5： | 2 |
| 16 | Experimental study on unloading induced shear performances of 3D saw-tooth rock fractures显示文摘A fractal model governing saw-tooth fractures was first introduced to replicate sandstone samples containing an inclined 3D penetrating rough fracture surface with various joint roughness coefficients(JRC).In conventional triaxial compression,the peak strength for fractured samples increased with both confining pressure and JRC.During the unloading confining pressure process,the normal stress of fractures declined but the shear stress increased,resulting in shear sliding of fractures.The shear displacement of fractures exponentially increased,and the positive normal displacement decreased gradually to negative values under coupling effects of shear contraction caused by normal stress and shear dilation due to climbing effects of fractures.Transition from quasi-static to dynamic sliding of the fractures was identified.The sliding resistance duration increased with confining pressure but decreased with JRC.After prepeak unloading,the fracture surfaces presented a more significant surface wear response and JRC values decreased by 1.70%–59.20%due to more remarkable asperity degradation compared with those after conventional triaxial compression.The theoretical model for shear strength of fractures was established through improving the Ladanyi&Archambault model by introducing the relations between normal stress and surface wear ratios of fractures,which agreed well with the experimental results. | Qian Yin Xinxin Nie Jiangyu Wu Qi Wang Kaiqi Bian Hongwen Jing | 2023 | International Journal of Mining Science and Technology2023，33，4： | 2 |
| 17 | Structure of the fission yeast S. pombe telomeric Tpz1-Poz1-Rap1 complex显示文摘 | Jing Xue Hongwen Chen Jian Wu Miho Takeuchi Haruna Inoue Yanmei Liu Hong Sun Yong Chen Junko Kanoh Ming Lei | 2017 | Cell Research2017，27，12： | 1 |
| 18 | Extraction of Aluminum Hydroxide from Coal Fly Ash Pre -Desilication and Calcination Methods显示文摘 | Wang Mingwei Yang Jing Ma Hongwen Shen Jie Li Jinhong Guo Feng | 2011 | Advanced Materials Research2011，，： | 1 |
| 19 | Physiological effects of NaC1 stress on cucumber germination and seedling growth 显示文摘 | Huanwen M Hongwen C Yanfeng Z Jing S Meng Z | 1999 | Cucurbit Genetics Cooperative Report1999，22，： | 1 |
| 20 | Preparation of Ultrafine Aluminum Hydroxide from Coal Fly Ash by Alkali Dissolution Process显示文摘 | ShuangQing Su Jing Yang HongWen Ma Fan Jiang YuQin Liu Ge Li | 2011 | Integrated Ferroelectrics2011，，1： | 1 |
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