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| 1 | Stability control of surrounding rocks for a coal roadway in a deep tectonic region显示文摘In order to effectively control the deformation and failure of surrounding rocks in a coal roadway in a deep tectonic region, the deformation and failure mechanism and stability control mechanism were studied. With such methods as numerical simulation and field testing, the distribution law of the displacement, stress and plastic zone in the surrounding rocks was analyzed. The deformation and failure mechanisms of coal roadways in deep tectonic areas were revealed: under high tectonic stress, two sides will slide along the roof or floor; while the plastic zone of the two sides will extend along the roof or floor,leading to more serious deformation and failure in the corner of two sides and the bolt supporting the corners is readily cut off by the shear force or tension force. Aimed at controlling the large slippage deformation of the two sides, serious deformation and failure in the corners of the two sides and massive bolt breakage, a ‘‘controlling and yielding coupling support'' control technology is proposed. Firstly, bolts which do not pass through the bedding plane should be used in the corners of the roadway, allowing the two sides to have some degree of sliding to achieve the purpose of ‘‘yielding'' support, and which avoid breakage of the bolts in the corner. After yielding support, bolts in the corner of the roadway and which pass through the bedding plane should be used to control the deformation and failure of the coal in the corner. ‘‘Controlling and yielding coupling support'' technology has been successfully applied in engineering practice, and the stability of deep coal roadway has been greatly improved. | Xiao Tongqiang Wang Xiangyu Zhang Zhigao | 2014 | International Journal of Mining Science and Technology2014，24，2： | 16 |
| 2 | CFD-DEM simulation of the pneumatic conveying of fine particles through a horizontal slit显示文摘Fine particles play a significant role in many industrial processes.To study the dynamic behavior of fine particle and their deposition in rock fractures,the pneumatic conveying of fine particles(approximately100 μm in diameter) through a small-scale horizontal slit(0.41 m × 0.025 m) was studied,which is useful for the sealing technology of underground gas drainage in coal mining production.The CFD-DEM method was adopted to model the gas-particle two-phase flow;the gas phase was treated as a continuum and modeled using computational fluid dynamics(CFD),particle motion and collisions were simulated using the DEM code.Then,the bulk movement of fine particles through a small-scale horizontal slit was explored numerically,and the flow patterns were further investigated by visual inspection.The simulation results indicated that stratified flow or dune flow can be observed at low gas velocities.For intermediate gas velocities,the flow patterns showed pulsation phenomena,and dune flow reappeared in the tail section.Moreover,periodic flow regimes with alternating thick and sparse stream structures were observed at a high gas velocity.The simulation results of the bulk movement of fine particles were in good agreement with the experimental findings,which were obtained by video-imaging experiments.Furthermore,the calculated pressure drop versus gas velocity profile was investigated and compared with relative experimental findings,and the results showed good agreement.Furthermore,the particle velocity vectors and voidage distribution were numerically simulated.Selected stimulation results are presented and provide a reference for the further study of fine particles. | Fubao Zhou Shengyong Hu Yingke Liu Chun Liu Tongqiang Xia | 2014 | Particuology2014，12，5： | 10 |
| 3 | Characteristics of stress distribution in floor strata and control of roadway stability under coal pillars显示文摘给在煤支柱下面在车道支持遇到的困难,我们在车道稳定性上学习了压力分发和他们的效果的特征,用理论分析和数字模拟。当水平应力减少时,结果证明在一个煤支柱下面,在一个地板阶层的垂直应力增加。我们断定垂直、水平的应力之间的增加的差别是为包围岩石的变丑和在煤支柱下面的车道的失败的一个重要原因。基于这,我们在一个煤支柱下面建议一条车道的包围岩石的控制技术例如高力量和高对的门栓支持,打电报加强支持,单个水力由包围岩石的 grouting 与横梁支持和加强支撑,它成功地在一个煤支柱下面在一条车道的一个稳定性控制工程被使用了。 | Tongqiang Xiao Bai Jianbiao Xu Lei Zhang Xuebin | 2011 | Mining Science and Technology2011，21，2： | 9 |
| 4 | Failure mechanism and stability control technology of rock surrounding a roadway in complex stress conditions显示文摘To solve the problem of supporting three downhill coal structures in the Yongan Coal Mine of Shanxi Jincheng, we studied the regular development of stress and plastic zones and characteristics of deformation of rock surrounding roadway groups after a period of roadway driving, mining one side as well as mining both sides, we used FLAC 3D for our numerical and theoretical analyses. Field test were carried out, where we revealed the deformation mechanism of roadways and its coal pillars in complex stress conditions. We proposed a roadway stability control technology using backwall grouting with high-water rapid hardening material and combined support with bolt and cable anchoring after mining both sides. Our field practices showed that deformation of rock surrounding roadways can be controlled with this technology. | Yu Yang Bai Jianbiao Chen Ke Wang Xiangyu Xiao Tongqiang Chen Yong | 2011 | Mining Science and Technology2011，21，3： | 8 |
| 5 | Seasonal variation in particle contribution and aerosol types in Shanghai based on satellite data from MODIS and CALIOP显示文摘Although the concentration of atmospheric particulate matter in Shanghai has declined in recent years,aerosols remain one of the major pollutants affecting air quality.Herein,spatio-seasonal variation in aerosol optical properties and aerosol types were studied overa 10-year period(2006-2015)in Shanghai,China,using satellite data from Moderate Resolution Imaging Spectroradiometer(MODIS)and CloudAerosol Lidar with Orthogonal Polarization(CALIOP).The average aerosol optical depth values for central urban and suburban areas of Shanghai were between 0.9 and 1.0.Clear seasonal variation in aerosol concentrations occurred,causing strongest attenuation in summer and weakest attenuation in autumn.Polluted dust,polluted continental(urban/industrial)and smoke aerosols were the main aerosol types.Desert dust aerosols occurred in the Shanghai area at higher altitudes(greater than 3 km)in spring,related to dusty weather in the north;while in winter,smoke aerosols occurred at high altitudes,related to haze pollution in the north.The aerosols detected in autumn were mainly from local sources,comprising polluted dust,polluted continental,and smoke aerosols.Aerosols in Shanghai clearly reflect both local and regional sources at different times. | Qiong Liu Xin Liu Tongqiang Liu Yanming Kang Yonghang Chen Jiming Li Hua Zhang | 2020 | Particuology2020，18，4： | 2 |
| 6 | A fully coupled hydrothermo-mechanical model for the spontaneous combustion of underground coal seams显示文摘 | Xia Tongqiang Zhou Fubao Liu Jishan | 2014 | Fuel2014，，125： | 1 |
| 7 | A fully coupled coal deformation and compositional flow model for the control of the premining coal seam gas extraction显示文摘 | Xia Tongqiang Zhou Fubao Liu Jishan | 2014 | International Journal of Rock Mechanics & Mining Sciences2014，72，： | 1 |
| 8 | Evaluation of the pre-drained coal seam gas quality显示文摘 | Tongqiang Xia Fubao Zhou Jishan Liu Feng Gao | 2014 | Fuel2014，，： | 1 |
| 9 | TheclinicalresearchofilaprazoleincuringHelicobacterpylori(+)duodenalulcer(艾普拉唑治疗幽门螺杆菌阳性十二指肠溃疡的临床研究)显示文摘 | WANGQiang(王强) TONGQiang(童强) JINShu(金曙) etal | 2009 | NatSci)(南京医科大学学报自然科学版2009，，9： | 1 |
| 10 | A BFSK and OOK IF demodulation circuit with 2.8 μs settling time and re-configurable image rejection functions for MICS/BCC applications显示文摘A BFSK and OOK IF base-band circuit is provided to implement the low-IF RF receivers for a dualband MICS/BCC network controller. In order to transfer the massive vital data immediately, the IF circuit is comprised of the fast-settling feed-forward programmable gain amplifier(PGA), a G_m-C complex filter, the fixed gain amplifier(FGA) and a 4-input 'quadratic sum' demodulator. A novel auto-switched coarse gain-setting method is adopted in the PGA to enhance the reaction speed and narrow the output signal range. Also the PGA does not suffer the same stability constraint as open-loop topologies. The complex filter fulfills the function of image rejection,in which the center frequency and bandwidth can be adjusted individually. The FGA is used to ameliorate the linearity and the 'quadratic sum' demodulator can reduce the overall power consumption. The designed IF circuit is fabricated with SMIC 0.18 μm CMOS process. The chip area is about 5.36 mm^2. Measurement results are given to verify the design goals. | Tongqiang Gao Zhenxiong Chen Siqi Zhao Haigang Yang Xinxia Cai | 2018 | Journal of Semiconductors2018，39，7： | 1 |
| 11 | Limb ische- mic preconditioning protects against contrast-induced a- cute kidney injury in rats via phosphorylation of GSK-313 显示文摘 | Tongqiang Liu Yi Fang Shaopeng Liu | 2015 | Free Radical Biology and Medicine2015，81，： | 1 |
| 12 | Preliminary analysis of polonium-210contamination for China Lead-based Research Re-actor显示文摘 | MAO Lanfang DANG Tongqiang PAN Ling-yang | 2014 | Fusion Engineering and Design2014，70，： | 1 |
| 13 | Evaluation of the pre-drained coal seam gas quality显示文摘 | XIA Tongqiang ZHOU Fubao LIU Jishan | 2014 | Fuel2014，130，8： | 1 |
| 14 | Quantum fluctuations in thermal vacuum state for two LC circuits with mutual inductance显示文摘 | Song Tongqiang | 2003 | Int J Theor Phys2003，42，4： | 1 |
| 15 | Two-phase Fluids Model for Freeway Traffic Flow and Its Application to Simulate Evolution of Solitons in Traffic 显示文摘 | Zuojin Zhu Tongqiang Wu | 2003 | Trans portation Engineering2003，129，1： | 1 |
| 16 | Consensus of discrete-time second-order agents with time-varying topology and time-varying delays显示文摘 | Yanping Gao Jingwei Ma Min Zuo Tongqiang Jiang Junping Du | 2012 | Journal of the Franklin Institute2012，，8： | 1 |
| 17 | On China's Protection of Delinquent Minors'Rights显示文摘At the end of June2011,Chinahad 29 reformatories fordelinquent minors,where 17,149 convicts aged 18 oryounger were serving their terms.Thesefacilities have persistently followed thepolicy of'combining punishment with redemption, | YAN JIA the Crime Prevention Research Institute under the Ministry of Justice LIU TONGQIANG Dezhou Prison in Shandong Province | 2012 | The Journal of Human Rights2012，11，1： | 0 |
| 18 | Evaluating logic functionality of cascaded frac显示文摘Look Up Tables(LUTs) are the key components of Field-Programmable Gate Arrays(FPGAs)Many LUT architectures have been studied; nevertheless, it is difficult to quantificationally evaLUT based architecture. Traditionally, dedicated efforts on specific modifications to the temapping tools are required for LUT architecture evaluation. A more feasible evaluation method forfunctionality is strongly required for the design of LUT architecture. In this paper, a mathematical for logic functionality calculation is proposed and conventional and fracturable LUT architectanalyzed. Furthermore, a cascaded fracturable LUT architecture is presented, which achieves twice functionality compared with the conventional LUTs and fracturable LUTs. | GUO Zhenhong LIN Yu LI Tianyi JIA Rui GAO Tongqiang YANG Haigang | 2016 | 太赫兹科学与电子信息学报2016，14，3： | 0 |
| 19 | Modeling and Application of Virtual Maintenance Process Based on Solidworks Composer显示文摘 | LIU Tongqiang CHEN Minye HAN Hongke | 2016 | International English Education Research2016，，7： | 0 |
| 20 | Experimental study of the blockage boundary for dense-phase pneumatic conveying of powders through a horizontal slit显示文摘The estimation of the blockage boundary for pneumatic conveying through a slit is of significant importance.In this paper,we investigate the characteristics for blockage of powder(48 μm average diameter)through a horizontal slit(1.6 m × 0.05 m × 0.002 m).The results show that the required critical solid mass flow rate increases as the superficial air velocity increases superficial air velocity.The solid loading ratio and superficial air velocity displayed a decreasing power law relationship.This finding agrees with existing theory and experimental results.However,a minimum inlet solid loading ratio exists.When the air velocity is greater than the corresponding air velocity of the minimum solid loading ratio,the solid loading ratio exhibits an increasing trend in power law.We also found that when the inlet conveying pressure increased,the critical solid mass flow rate required for blockage,the inlet solid loading ratio,and the minimum inlet solid loading ratio increased. | Shengyong Hu Fubao Zhou Yingke Liu Jianhong Kang Yifan Zhang Tongqiang Xia | 2015 | Particuology2015，13，4： | 0 |
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