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《Journal of Liaoning Technical University》 2004-01
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Study on stability of wide and thick coal pillar

ZHAO Guo-xu1,2, XIE He-ping3, MA Wei-min3 (1.E&M Department, Guangzhou Metro General Company, Guangzhou 510030, China; 2. Civil Engineering Post-doctor Station, Xian Jiaotong Uninversity, Chengdu 610031, China;3.Fractal and Rock Mechanics Research Institute, , China University of Mining Technology(Beijing School), Beijing 100083,China)  
The range of the plastic zone of wide and thick pillar in triaxial stress is studied in theory. From the point view of system theory, a new concept for improving the stability of the whole pillar system is put forward, and the indices of pillar stability assessment are introduced. By using the orthogonal design method, simulating with program FLAC, the optimized layout of coal pillar is given.
【Fund】: 国家自然科学基金重点项目资助(59634030)
【CateGory Index】: TD821
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