| A visco elasto plastic creep model of outburstprone coal under triaxial compression |
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| 作者姓名： | WANG Wei zhong YIN Guang zhi WANG Deng ke and Qin Hu |
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| 作者单位： | College of Resource and Environmental Sciences;Key Laboratory for the Exploitation of Southwest Resources and the Environmental Disaster Control Engineering, Ministry ofEducation, Chongqing University, Chongqing 400044, P.R. China;College of Resource and Environmental Sciences;Key Laboratory for the Exploitation of Southwest Resources and the Environmental Disaster Control Engineering, Ministry ofEducation, Chongqing University, Chongqing 400044, P.R. China;College of Resource and Environmental Sciences; Chongqing University, Chongqing 400044, P.R. China;College of Resource and Environmental Sciences; Chongqing University, Chongqing 400044, P.R. China |
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| 摘 要： | Using self made creep seepage experimental apparatus, triaxial creep tests on outburst prone coal are carried out with coal samples taken from Songzao Coal Mine. It is found that the attenuation creep property is shown in the conditions of less than its long term strength load, while non attenuation creep property for the greater conditions. By introducing a visco elasto plastic body which can describe the deformation property of non Newtonian fluids, the visco elasto plastic creep model of outburst prone coal is put forward combined with a Poyting Thomson model. The model parameters were fitted out with Matlab programmer and validation is employed. It is found that the test results were in good agreement with those by the proposed model.
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| 关 键 词： | triaxial compression outburst prone coal creep property visco elasto plastic creep model |
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