煤矿安全2012，Vol.43Issue(12)：9-11,3.
含瓦斯煤体破裂过程围压效应研究
Research on Confining Pressure Effect in Gassy Coal Failure Process
摘要
Abstract
In order to investigate the effect of confining pressure on mechanical properties of gassy coal in Huaibei Mining Area,the gassy coal is analyzed though triaxial test.The gassy coal's strength,deformation and failure condition under three different confining pressures are simulated by RFPA2D-Flow.It shows that the ultimate compressive strength,residual strength and elastic modulus of gassy coal are enlarged with increasing confining pressure.The residual deformation of gassy coal is related with confining pressure and the strength of gassy coal itself.The greater the confining pressure,the smaller the residual deformation.Gassy coal softens gradually after elastic deformation stage in loading process.And it shows a certain plastic character when soften decreases.The rupture form of gassy coal also changes with the changing confining pressure.The angle between the macroscopic rupture face of gassy coal and greatest principal stress direction enlarges with the changing confining pressure.关键词
含瓦斯煤体/三轴试验/围压效应Key words
gassy coal/triaxial test/confining pressure effect分类
矿业与冶金引用本文复制引用
孔海陵,王路珍,佘斌,蔡中兵..含瓦斯煤体破裂过程围压效应研究[J].煤矿安全,2012,43(12):9-11,3.基金项目
国家自然科学基金资助项目 （）
盐城工学院应用基础研究资助项目 （）
