|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Key technologies and equipment for a fully mechanized top-coal caving operation with a large mining height at ultra-thick coal seams显示文摘 | Jinhua Wang Bin Yu Hongpu Kang Guofa Wang Debing Mao Yuntao Liang Pengfei Jiang | 2015 | International Journal of Coal Science & Technology2015，2，2： | 57 |
| 2 | Intelligent and ecological coal mining as well as clean utilization technology in China: Review and prospects显示文摘Coal is an essential fossil fuel in China; however, coal mining and its utilization are being under the increasing pressure from ecological and environmental protection. Therefore, the consulting project 'Technical Revolution in Ecological and Efficient Coal Mining and Utilization & Intelligence and Diverse Coordination of Coal-based Energy System,' initiated by Chinese Academy of Engineering, puts forward three stages(3.0, 4.0 and 5.0) of China's coal industry development strategy. Aimed at 'reduced staff,ultra-low ecological damage, and emission level near to natural gas,' breakthroughs should be achieved in the following three key technologies during the China Coal Industry 3.0 stage(2016–2025): including intelligent coal mining, ecological mining, ultra-low emission and environmental protection. This paper focuses on the development trends of the China Coal Industry 3.0 and its support for China Coal Industry 4.0 and 5.0 is analyzed and prospected as well, which may offer technical assistance and strategy orientation for realizing the transformation from traditional coal energy to clean energy. | Guofa Wang Yongxiang Xu Huaiwei Ren | 2019 | International Journal of Mining Science and Technology2019，29，2： | 37 |
| 3 | Mechanical model of water inrush from coal seam floor based on triaxial seepage experiments显示文摘In order to study the mechanism of confined water inrush from coal seam floor,the main influences on permeability in the process of triaxial seepage experiments were analyzed with methods such as laboratory experiments,theoretical analysis and mechanical model calculation.The crack extension rule and the ultimate destruction form of the rock specimens were obtained.The mechanism of water inrush was explained reasonably from mechanical point of view.The practical criterion of water inrush was put forward.The results show that the rock permeability 'mutation' phenomenon reflects the differences of stress state and cracks extension rate when the rock internal crack begins to extend in large-scale.The rock ultimate destruction form is related to the rock lithology and the angle between crack and principal stress.The necessary condition of floor water inrush is that the mining pressure leads to the extension and transfixion of the crack.The sufficient condition of floor water inrush is that the confined water’s expansionary stress in normal direction and shear stress in tangential direction must be larger than the internal stress in the crack.With the two conditions satisfied at the same time,the floor water inrush accident will occur. | Yihui Pang Guofa Wang Ziwei Ding | 2014 | International Journal of Coal Science & Technology2014，1，4： | 35 |
| 4 | Surrounding rock control theory and longwall mining technology innovation显示文摘 | Guofa Wang Yihui Pang | 2017 | International Journal of Coal Science & Technology2017，4，4： | 30 |
| 5 | Potential risks of spectrum whitening deconvolution——compared with well-driven deconvolution显示文摘Deconvolution is widely used to increase the resolution of seismic data. To compare the resolution ability of conventional spectrum whitening deconvolution to thin layers with that of well- driven deconvolution, a complex sedimentary geological model was designed, and then the simulated seismic data were processed respectively by each of the two methods. The amplitude spectrum of seismic data was almost white after spectrum whitening, but the wavelet resolution was low. The amplitude spectrum after well-driven deconvolution deviated from white spectrum, but the wavelet resolution was high. Further analysis showed that if an actual reflectivity series could not well satisfy the hypothesis of white spectrum, spectrum whitening deconvolution had a potential risk of wavelet distortion, which might lead to a pitfall in high resolution seismic data interpretation. On the other hand, the wavelet after well- driven deconvolution had higher resolution both in the time and frequency domains. It is favorable for high resolution seismic interpretation and reservoir prediction. | Li Guofa Zhou Hui Zhao Chao | 2009 | Petroleum Science2009，6，2： | 12 |
| 6 | Characteristics of the crustal magnetic anomaly and regional tectonics in the Qinghai-Tibet Plateau and the adjacent areas显示文摘Study of the characteristics of the crustal magnetic anomaly in the Qinghai-Tibet Plateau and the adjacent areas helps better understand the lithospheric structure and evolution, as well as the regional geodynamic processes. Here we analyze the distribution laws of the crustal magnetic anomaly and its vertical gradient, the decay characteristics of the anomaly, the contributions from different wavelength bands to the anomaly, and the relationship between the anomaly and the crustal regional tectonics in the plateau and nearby, based on a new and higher degree geomagnetic model NGDC-EMM-720-V3 constructed from the surface, aeromagnetic, marine and satellite survey data. The results reveal that the positive and negative anomalies in the Qinghai-Tibet Plateau are weak, while those of the surrounding areas are strong. The boundary agrees well with the border of the plateau regional tectonics. The anomaly is nearly east-west in the central and western plateau, arc-shaped in the southwestern and eastern, and nearly north-south in the southeastern, consistent with the tectonic trends. There are strong negative anomaly foci in the east and west syntaxis, whereas no significant differences exist among the Cenozoic blocks in the plateau interior. No direct correspondence exists between the anomaly and the crustal depth. On the background of a weak magnetic anomaly in the plateau, relatively stronger short wavelength fields from the shallower crust are overlapped in the Lhasa, Qilian, Qaidam, and Sichuan-Yunnan rhombic blocks. A strong negative anomaly in the east-west direction is distributed along the Himalayas, mainly caused by the middle and long wavelength bands in the deep and central crust. The magnetic structural layers are stable in the Sichuan and Tarim basins. The anomalies at different altitudes over the southern plateau vary strongly, showing a drastic variation in the magnetic structure from the deep crust to the shallow crust. | KANG GuoFa GAO GuoMing BAI ChunHua SHAO Dan FENG LiLi | 2012 | Science China Earth Sciences2012，55，6： | 11 |
| 7 | Numerical simulation of low pressure die-casting aluminum wheel显示文摘The FDM numerical simulation software,ViewCast system,was employed to simulate the low pressure die casting(LPDC)of an aluminum wheel.By analyzing the mold-filling and solidification stage of the LPDC process,the distribution of liquid fraction,temperature field and solidification pattern of castings were studied.The potential shrinkage defects were predicted to be formed at the rim/spoke junctions,which is in consistence with the X-ray detection result.The distribution pattern of the defects has also been studied.A solution towards reducing such defects has been presented.The cooling capacity of the mold was improved by installing water pipes both in the side mold and the top mold.Analysis on the shrinkage defects under forced cooling mode proved that adding the cooling system in the mold is an effective method for reduction of shrinkage defects. | Mi Guofa Liu Xiangyu Wang Kuangfei Fu Hengzhi | 2009 | China Foundry2009，6，1： | 11 |
| 8 | Effects of Near-Surface Absorption on Reflection Characteristics of Continental Interbedded Strata:the Dagang Oilfield as an Example显示文摘由于震波领域干扰的效果,思考事件从 interbedded 产生了并且迭加沙和页岩阶层不再与地质的接口有一种明确的相应关系。近表面的层的吸收减少地震小浪的分辨率,从不同的沙身体加强地震思考的干扰,并且做更复杂、困难的薄 interbedded 阶层的地震数据解释。以便具体地在 interbedded 阶层的地震思考特征上调查并且分析近表面的吸收的效果,并且弄明白当前的技术的能力补偿近表面的吸收,有近表面的吸收的大陆人 interbedded 阶层的一个地质的模型被设计,并且 prestack 震波地数字地与波浪方程被模仿。然后,模仿的波浪地被 prestack 时间迁居处理, prestack 和 poststack 思考特征上的近表面的吸收的效果被分析,并且近表面的吸收被补偿由反的过滤 Q。模型测试显示出那:(1 ) 预言的可靠性和有 AVO 倒置的一座大陆人水库的描述由于近表面的结构的侧面的变化被降级;(2 ) 在地震思考事件和地质的接口之间的相应关系进一步由于近表面的吸收被削弱;并且(3 ) 吸收赔偿的当前的技术可能导致假地质的结构和异例。基于模型实验, Dagang 油地的真实地震数据被分析并且处理。大陆人 interbedded 阶层的地震思考特征被改进,并且从地震数据的地质的解释的可靠性被提高。 | LI Guofa CAO Mingqiang ZHOU Hui | 2010 | Acta Geologica Sinica(English Edition)2010，84，5： | 10 |
| 9 | 3D finite element simulation of explosive welding of three-layer plates显示文摘A 3D finite element model of the explosive welding process of three-layer plates with materials of steel-copper-copper is established. Based on the presented model, the bonding mechanism is simulated and analyzed, different detonation modes are also comparatively studied to indicate the driving force spread in few microseconds. The results show that the three layer plates bond together after many times of impact between the flyers and the base driven by detonation wave, which is damping rapidly at each impact with wavelength decreasing. The pressure at the detonation point is minimal, which induces non-bonding of the plates here. Detonation wave propagates in concentric circle both under side-midpoint detonation mode and under center-point detonation mode, but the movement of the flyer is different, which makes non-bonding easily occur at the end of detonation under side-midpoint detonation and at the center of the plate under center-point detonation. | SUI GuoFa LI JinShan SUN Feng MA Bei LI HongWei | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，5： | 7 |
| 10 | Microstructure and properties of ZL205 Alloy显示文摘The microstructure, precipitate type, precipitate distribution and tensile strength of a ZL205 alloy, beforeand after ageing treatment, have been studied by means of optical microscopy and transmission electron microscopy.The results showed that the as-cast microstructure of the alloy was made up of α-Al and eutectic phase distributedat the grain boundaries. During ageing treatment, the tensile strength increased at first and then reduced with time,and the highest ultimate tensile strength was found to be around 488.2 MPa. | Mi Guofa Wang Kuangfei Gong Haijun Wang Hongwei Zeng Songyan | 2008 | China Foundry2008，5，1： | 6 |
| 11 | Study of Longitudinal-Vertical Dynamics for In-Wheel Motor-Driven Electric Vehicles显示文摘The in-wheel motor(IWM)-driven electric vehicles(EVs)attract increasing attention due to their advantages in dimensions and controllability.The majority of the current studies on IWM are carried out with the assumption of an ideal actuator,in which the coupling effects between the non-ideal IWM and vehicle are ignored.This paper uses the braking process as an example to investigate the longitudinal-vertical dynamics of IWM-driven EVs while considering the mechanical-electrical coupling effect.First,a nonlinear switched reluctance motor model is developed,and the unbalanced electric magnetic force(UEMF)induced by static and dynamic mixed eccentricity is analyzed.Then,the UEMF is decomposed into longitudinal and vertical directions and included in the longitudinal-vertical vehicle dynamics.The coupling dynamics are demonstrated under different vehicle braking scenarios;numerical simulations are carried out for various road grades,road friction,and vehicle velocities.A novel dynamics vibration absorbing system is adopted to improve the vehicle dynamics.Finally,the simulation results show that vehicle vertical dynamic performance is enhanced. | Yechen Qin Ze Zhao Zhenfeng Wang Guofa Li | 2021 | Automotive Innovation2021，4，2： | 5 |
| 12 | Analysis of the ambiguity of log-constrained seismic impedance inversion显示文摘Although the ambiguity of seismic inversion is widely recognized in both theory and practice,so far as a concrete inversion example is concerned,there is not any objective,controllable method or any standard for how to evaluate and determine its ambiguity and reliability,especially for the high frequency components beyond the effective seismic frequency band.Taking log-constrained impedance inversion as an example,a new appraisal method is proposed on the basis of analyzing a simple geological model.Firstly,the inverted impedance model is transformed to a reflection coefficient series.Secondly,the maximum effective frequency of the real seismic data is chosen as a cutoff point and the reflection coefficient series is decomposed into two components by low-pass and high-pass filters.Thirdly,the geometrical reflection characteristics of the high-frequency components and that of the real seismic data are compared and analyzed.Then,the reliability of the inverted impedance model is appraised according to the similarity of geometrical characteristics between the high-frequency components and the real seismic data.The new method avoids some subjectivity in appraising the inverted result,and helps to enhance the reliability of reservoir prediction by impedance inversion technology. | Li Guofa Li Hao Ma Yanyan Xiong Jinliang | 2011 | Petroleum Science2011，8，2： | 5 |
| 13 | Numerical simulation and optimization of Al alloy cylinder body by low pressure die casting显示文摘Shrinkage defects can be formed easily at critical location during low pressure die casting (LPDC) of aluminum alloy cylinder body. It has harmful effect on the products. Mold filling and solidification process of a cylinder body was simulated by using of Z-CAST software. The casting method was improved based on the simulation results. In order to create effective feeding passage, the structure of casting was modified by changing the location of strengthening ribs at the bottom, without causing any adverse effect on the part's performance. Inserting copper billet at suitable location of the die is a valid way to create suitable solidification sequence that is beneficial to the feeding. Using these methods, the shrinkage defect was completely eliminated at the critical location. | Mi Guofa Liu Yanlei Zhao Hengtao Fu Hengzhi | 2008 | China Foundry2008，5，2： | 5 |
| 14 | The application of elastic impedance inversion in reservoir prediction at the Jinan area of Tarim Oilfield显示文摘在 Tarim 油矿的 Jinan 区域的三叠纪的水库由主要组成内部 bedded 沙和页岩。因为在沙岩和页岩阻抗之间的大重叠,独自由声学的阻抗把沙岩与页岩区分开来是困难的。比作声学的阻抗,有弹性的阻抗包含更多的石版印刷逻辑和水库的物理信息。基于过细的系住得好的刻度,为 10 °的有弹性的阻抗数据卷, 20 °,和 30 个°出现角度被获得用预先叠有弹性的阻抗倒置。在有弹性的阻抗和页岩内容之间的一种非线性的统计关系被一个 PNN 神经网络建立。非线性的印射关系被用来从有弹性的阻抗预言水库页岩内容,它将描绘并且预言水库含有石油的沙。 | Yang Jinhua Li Guofa Liu Yang Jiang Weidong | 2007 | Applied Geophysics2007，4，3： | 5 |
| 15 | Relationship Between Organ Masses and Basal Metabolic Rate (BMR) in Tree Sparrows (Passer montanus)显示文摘BMR(basal metabolic rate),body mass and organ masses of tree sparrows(Passer montanus) were measured to analyze the correlation between organ masses and BMR in tree sparrows,and to evaluate the underlying physiological causes of difference in BMR. Adult tree sparrows were live-trapped by mist net in Qiqihar City,Heilongjiang Province(47 29'N,124 02'E) . The closed circuit respirometer was used to measure the metabolic rate(MR) ,and controlled the ambient temperature by using a water bath(±0.5℃) . Body masses were measured to the nearest 0.01 g before and after BMR measurements with a Sartorius balance(model BT25S) . The mean value was recorded as body mass. Wet and dry masses of several organs were measured,too. BMR was(4.276± 0.385) mL O 2 /(g h) and mean body mass was(18.522±0.110) g. Since not all the variables were normal distributed,a log 10-transformation of those variables was employed to linearize them,prior to analyses. Simple regression analyses indicated that most organ masses showed a significant high correlation with body mass. Both the small intestine and rectum masses were notable exception to that trend. The body-mass-adjusted residual analysis showed that only the kidney wet mass,brain mass,stomach mass,small mass and rectum wet mass correlated with BMR. In addition,correlations between several organ masses and BMR were observed. Because of the inter-correlations of organ masses,a principal component analysis(PCA) was performed to redefine the morphological variability. The first four components whose eigenvalues were greater than 1 could explain 75.2% variance of BMR. The first component,whose proportion reached 30.19%,was affected mainly by stomach mass,small intestine mass and rectum mass. Therefore,the results supported the hypothesis that BMR was controlled by some 'expensive metabolic' organs. | LI Ming YIN Yajie NIE Chunyu QU Lina ZHNAG Guofa LIANG Yantao ZHAO Xiaoju LIU Jinsong | 2011 | Journal of Northeast Agricultural University(English Edition)2011，18，4： | 4 |
| 16 | Deep Reinforcement Learning Enabled Decision-Making for Autonomous Driving at Intersections显示文摘Road intersection is one of the most complex and accident-prone traffic scenarios,so it’s challenging for autonomous vehicles(AVs)to make safe and efficient decisions at the intersections.Most of the related studies focus on the solution to a single scenario or only guarantee safety without considering driving efficiency.To address these problems,this study proposed a deep reinforcement learning enabled decision-making framework for AVs to drive through intersections automatically,safely and efficiently.The mapping relationship between traffic images and vehicle operations was obtained by an end-to-end decision-making framework established by convolutional neural networks.Traffic images collected at two timesteps were used to calculate the relative velocity between vehicles.Markov decision process was employed to model the interaction between AVs and other vehicles,and the deep Q-network algorithm was utilized to obtain the optimal driving policy regarding safety and efficiency.To verify the effectiveness of the proposed decision-making framework,the top three accident-prone crossing path crash scenarios at intersections were simulated,when different initial vehicle states were adopted for better generalization capability.The results showed that the developed method could make AVs drive safely and efficiently through intersections in all of the tested scenarios. | Guofa Li Shenglong Li Shen Li Yechen Qin Dongpu Cao Xingda Qu Bo Cheng | 2020 | Automotive Innovation2020，3，4： | 4 |
| 17 | Layer-block tectonics of Cenozoic basements and formation of intra-plate basins in Nansha micro-plate, southern South China Sea显示文摘Layer-block tectonics (LBT) concept, with the core of pluralistic geodynamic outlook and multi- layer-sliding tectonic outlook, is one of new keys to study 3-dimensional solid and its 4-dimensional evolution history of global tectonic system controlled by global geodynamics system. The LBT concept is applied to study the lithospheric tectonics of the southern South China Sea (SCS). Based on the analysis of about 30 000 km of geophysical and geological data, some layer-blocks in the Nansha micro-plate can be divided as Nansha ultra-crustal layer-block, Zengmu crustal layer-block, Nanwei (Rifleman bank)-Andu (Ardasier bank) and Liyue (Reed bank)-North Palawan crustal layer-blocks, Andu-Bisheng and Liyue-Banyue basemental layer-blocks. The basic characteristics of the basemental layer-blocks have been dicussed, and three intra-plate basin groups are identified. The intra-plate basins within Nansha micro-plate can be divided into three basin groups of NanweiAndu, Feixin-Nanhua, and Liyue-North Palawan based on the different geodynamics. In the light of pluralistic geodynamic concept, the upheaving force induced by the mid-crust plastic layer is proposed as the main dynamical force which causes the formation of the intra-plate basins within the Nansha micro-plate. Finally, models of a face-to-face dip-slip-detachment of basemental layer- block and a unilateral dip-slip-detachment of basemental layer-block are put forward for the forming mechanisms of the Nanwei-Andu and Liyue-North Palawan intra-plate basin groups, respectively. | LIU Hailing XIE Guofa LIN Qiujin ZHENG Hongbo LIU Yingchun | 2009 | Acta Oceanologica Sinica2009，28，3： | 3 |
| 18 | An expression profile of human α-lactalbumin in the milk of transgenic mouse显示文摘Five female transgenic mice were produced by microinjection using a construct made up of a 7.3-kb-5′ flanking region and a 2.0-kb coding region of human a-lactalbumin, as well as a 227-bp 3′-flanking region from bovine growth hormone gene. A founder female ex-pressed human a-lactalbumin as much as 0.3 g per liter of its milk, approximately a 3-fold in-crease in the total a-lactalbumin concentration of the transgenic mouse milk. Compared with the normal mice, the expression profile of the ha-Lac transgene in the transgenics is different during the lactation, showing low level in the first 3 days and becoming increased from day 4, then gradually reaching and stabilizing at the highest level from day 13. In addition, the milk yielding volume in the transgenics tended to be higher than in normal mice, suggesting higher concen-trations of a-lactalbumin might boost more milk output. | LIU Siguo WEI Yingyun HU Guofa GAO Hong LIU Sijin LAO Weide | 2004 | Science China(Life Sciences)2004，47，3： | 3 |
| 19 | Microtubule dynamics in axon guidance显示文摘Precise modulation of the cytoskeleton is involved in a variety of cellular processes including cell division, migration, polarity, and adhesion.In developing post-mitotic neurons, extracellular guidance cues not only trigger signaling cascades that act at a distance to indirectly regulate microtubule distribution, and assembly and disassembly in the growth cone, but also directly modulate microtubule stability and dynamics through coupling of guidance receptors with microtubules to control growth-cone turning.Microtubule-associated proteins including classical microtubule-associated proteins and microtubule plus-end tracking proteins are required for modulating microtubule dynamics to influence growth-cone steering.Multiple key signaling components, such as calcium, small GTPases, glycogen synthase kinase-3β, and c-Jun N-terminal kinase, link upstream signal cascades to microtubule stability and dynamics in the growth cone to control axon outgrowth and projection.Understanding the functions and regulation of microtubule dynamics in the growth cone provides new insights into the molecular mechanisms of axon guidance. | Guofa Liu Trisha Dwyer | 2014 | Neuroscience Bulletin2014，30，4： | 3 |
| 20 | A modified similitude analysis method for the electro-mechanical performances of a parallel manipulator to solve the control period mismatch problem显示文摘Due to the discrete feature and performance limitation of the numerical controller,the control period sometimes cannot meet the constraints of the scaled model in similitude analysis,which brings the control period mismatch problem.The traditional similitude analysis methods are not able to solve this problem since the controller is treated as continuous system in these methods.This paper proposes a modified similitude analysis method to solve the control period mismatch problem,and the electro-mechanical performances of a 2-DOF parallel manipulator is predicted.Based on the model of dynamic and control system,most of the similitude laws are derived by taking the controller as continuous system.Then the transfer function of the controller in discrete form is established,and the similitude law related to control period is derived to figure out the cause of mismatch problem.The modified method,named long period equivalent,is proposed to solve the mismatch problem by using the least square method and superposition principles.Finally,the scaled model of the parallel manipulator is determined based on the modified similitude analysis method. | WU Jun SONG YuYao LIU ZiLin LI GuoFa | 2022 | Science China(Technological Sciences)2022，65，3： | 3 |
您所在的机构暂未开通此部分的功能，请联系管理员