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您的检索式：作者名="Xiating ZHAO"
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| 1 | 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 |
| 2 | 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 |
| 3 | Modeling non-linear displacement time series of geo-materials using evolutionary support vector machines 显示文摘 | Feng Xiating Zhao Hongbo Li Shaojun | 2004 | International Journal of Rock Mechanics & Mining Sciences2004，41，： | 1 |
| 4 | Rough Marcinkiewicz integrals along certain smooth curves显示文摘这份报纸被奉献给与某些光滑的曲线联系的多重参数的不平的 Marcinkiewicz 不可分的操作员的学习。Grafakos-Stefanov 类型尺寸调节 F,这被显示出(S | Bolin MA Huoxiong WU Xiating ZHAO | 2012 | Frontiers of Mathematics in China2012，7，5： | 1 |
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