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| 1 | Study on calculation of rock pressure for ultra-shallow tunnel in poor surrounding rock and its tunneling procedure显示文摘A computational method of rock pressure applied to an ultra-shallow tunnel is presented by key block theory, and its mathematical formula is proposed according to a mechanical tunnel model with super-shallow depth.Theoretical analysis shows that the tunnel is subject to asymmetric rock pressure due to oblique topography. The rock pressure applied to the tunnel crown and sidewall is closely related to the surrounding rock bulk density, tunnel size, depth and angle of oblique ground slope. The rock pressure applied to the tunnel crown is much greater than that to the sidewalls, and the load applied to the left sidewall is also greater than that to the right sidewall. Meanwhile, the safety of the lining for an ultra-shallow tunnel in strata with inclined surface is affected by rock pressure and tunnel support parameters. Steel pipe grouting from ground surface is used to consolidate the unfavorable surrounding rock before tunnel excavation, and the reinforcing scope is proposed according to the analysis of the asymmetric load induced by tunnel excavation in weak rock with inclined ground surface. The tunneling procedure of bench cut method with pipe roof protection is still discussed and carried out in this paper according to the special geological condition. The method and tunneling procedure have been successfully utilized to design and drive a real expressway tunnel. The practice in building the super-shallow tunnelhas proved the feasibility of the calculation method and tunneling procedure presented in this paper. | Xiaojun Zhou Jinghe Wang Bentao Lin | 2014 | Journal of Modern Transportation2014,22,1: | 4 |
| 2 | Construction mechanism of whitenization weight function and its application in grey clustering evaluation显示文摘The clustering evaluation can be used to scientifically classify the objects to be evaluated according to the information aggregation of various evaluation rules. In grey weighted clustering evaluation, the index clustering rule relies on the construction of the whitenization weight function, while the existing construction method of the linear function lacks the construction mechanism analysis and validity explanation. A normative construction principle is put forward by analyzing the construction mechanism of the function. Through proving the normative principle of the function,the basic modal function(BMF) is proposed and characterized by different function forms. Then, a new type of the whitenization weight function and its grey clustering evaluation model algorithm are given by studying the mechanism and nature of the construction of different forms of the function. Finally, the comparative study for self-innovation capability of defense science and technology industry(DSTI) is taken as an example. The results show that the different construction ways of the function have an effect on the clustering result. The proposed construction mechanism can better explain the index clustering rules and evaluation effectiveness,which will perfect the theoretical system of grey clustering evaluation and be applied to practice effectively. | XIE Naiming SU Bentao CHEN Nanlei | 2019 | Journal of Systems Engineering and Electronics2019,30,1: | 3 |
| 3 | The value of preoperative CT scan of tympanic facial nerve canal in tympanomastoid surgery显示文摘 | Zilong Yu Zhenchang Wang Bentao Yang Demin Han Luo Zhang | 2011 | Acta Oto-Laryngologica2011,,7: | 1 |
| 4 | Fast Service Restoration for Large Scale Distribution Systems with Priority Customers and Constraints显示文摘 | Karen Nan Miu Hsiao Dong Chiang Bentao Yuan Guy Darling | 1998 | IEEE Trans on Powe Systems1998,13,3: | 1 |
| 5 | Fast service restoration for large-scale distribution systems with priority customers and con- straints显示文摘 | Miu K N Chiang H D Bentao Y | 1998 | lEEETransonPowersystems1998,13,3: | 1 |
| 6 | Fast service restoration for large-scale distribution systems with priority customers and constraints显示文摘 | Karen N M Hsiao D C Bentao Y | 1998 | IEEE Trans on Power Systems1998,13,3: | 1 |
| 7 | Fast service restoration for large-scale distribution systems with priority customers and constraints显示文摘 | Miu Karen Nan Chiang Hsiao-Dong Yuan Bentao | | 0,,03: | 1 |
| 8 | Fast service restoration for large scale distribution system with priority customers and constrains显示文摘 | Miu K N Hsiao-Dong Chiang Bentao Yuan | 1998 | IEEE Trans on Power Systems1998,13,3: | 1 |
| 9 | Fast service restoration for large-scale distribution systems with priority customers and constraints显示文摘 | Miu K N Chiang H D Yuan Bentao | 1998 | IEEE Trans on Power systems1998,13,3: | 1 |
| 10 | Investigating urachal carcinoma for more than 15 years显示文摘 | Duqun Chen Yifan Li Zuhu Yu Zhengming Su Liangchao Ni Yaoting Gui Shangqi Yang Bentao Shi Yongqing Lai | 2014 | Oncology Letters2014,,5: | 1 |
| 11 | Fast Service Restoration for Large - Scale Distribution Systems with Priority Customers and Constraints 显示文摘 | Miu Karen Nan Chiang Hsiao - Dong Yuan Bentao etal | 1998 | IEEE Trans on Power Systems1998,13,3: | 1 |
| 12 | An Eddy Perspective of Global Air-Sea Covariation显示文摘Mesoscale eddies are widely distributed in the global ocean.They affect the ocean flow field and material transport,and play an important role in the energy transfer between the ocean and the atmosphere.With the development of high-resolution satellite observations,many regional studies are emerging on the coupling effects between mesoscale eddies and the atmosphere.In this study,each identified global eddy(2010-2016,about 13 million eddies)is collocated and normalized with sea surface temperature(SST,2010-2014),sea surface wind(2010-2016),sea surface air temperature at 2 m(2010-2016),water vapor(2010-2014),evaporation rate(2010-2016),cloud liquid water(2010-2014),and rainfall rate(2010-2014).Four normalization methods are used:non-rotated normalization,and normalizations based on wind direction,flow direction,and eddy egg direction alignment.Furthermore,the eddy explained variations of the air-sea parameters are calculated to obtain their spatial distribution.The eddy explained variation ranges of the seven parameters are 24%-78%,12%-21%,3%-35%,8%-22%,9%-18%,0-53%,and0-58%,respectively.The influence of mesoscale eddies on the air-sea interface can be summarized as a vertical mixing mechanism.This study is novel in that it explores the overlying air-sea distribution from the perspective of global eddies.The numerical distributions of climatological air-sea parameters are determined by utilizing the multiyear composite overlying air-sea distribution over global eddies using the eddy coordinate system,and the contribution of eddies to this pattern is analyzed.This study is important for the investigation of global climate change. | Jianjie LIU Ge CHEN Guiyan HAN Bentao ZHANG | 2021 | Journal of Meteorological Research2021,35,5: | 0 |
| 13 | An Improved Intra-Prediction Algorithm for H.264显示文摘H.264 improves the coding efficiency by adopting rate distortion optimization (RDO); however,it yields high computa-tional complexity. In order to reduce the intra-frame coding time,a fast and effective intra-prediction mode selection algorithm is proposed. The minimum sum of absolute differences between sub-block and its marginal weighted-pixels are used for selecting the candidates of prediction modes to speed up the intra-prediction process with an early termination criterion. Experimental results show that the proposed method can reduce the encoding time by more than 63% comparing with JM (Joint Model) software and is better than the previous algorithms,with negligible loss of coding performance. | WU Bentao, WU Minyuan School of Electronic Information, Wuhan University, Wuhan 430072, Hubei, China | 2010 | Wuhan University Journal of Natural Sciences2010,15,4: | 0 |