重庆大学学报（自然科学版）2009，Vol.32Issue(11)：1316-1320,5.
含瓦斯煤岩三维蠕变模型与稳定性分析
Triaxial creep model and its stability analysis of gas-containing coal
摘要
Abstract
Investigation on the creep property of coal containing gas is an effective means for understanding the mechanism of delay outburst of coal and gas in a coal mine. This paper conducts triaxial creep tests on the specimens of gas-containing coal using a self-made creep experimental apparatus to determine the creep law for coal containing gas. An improved triaxial creep model is developed for containing gas by coupling a Nishihara model with another visco-elasto-plastic body which can describe the deformation property of non-Newtonian fluids. The parameter fittings are conducted based on the experimental dada. The present model is examined in terms to the results of triaxial creep tests in various stress-level cases. The result shows that the proposed model for gas-containing coal can properly represent the creep deformation at different creep stages, especially at the accelerating stage. The instability condition of the model for coal containing gas is also discussed according to stability theories of differential equation solution.关键词
含瓦斯煤岩/蠕变特性/三维蠕变模型/稳定性/失稳准则Key words
gas-containing coal/ creep property/ triaxial creep model/ stability/ instability criterion分类
建筑与水利引用本文复制引用
王登科,尹光志,张东明..含瓦斯煤岩三维蠕变模型与稳定性分析[J].重庆大学学报（自然科学版）,2009,32(11):1316-1320,5.基金项目
国家自然科学基金资助项目(40672192,40772193,50479072) （40672192,40772193,50479072）
国家重点基础研究发展计划(973计划)项目(2009CB724603) （973计划）
