不同围压条件下含瓦斯煤的三轴压缩试验研究  

Experimental Study on Triaxial Compression of Coal Containing Methane Under Different Confining Pressure

作　　者：杜育芹[1,2,3,4,5] 袁梅[2,3,4,5,6] 孟庆浩[2] 许石青[2,3,4,5] 

机构地区：[1]中国矿业大学银川学院,宁夏银川750011 [2]贵州大学矿业学院,贵州贵阳550025 [3]贵州省非金属矿产资源综合利用重点实验室,贵州贵阳550025 [4]贵州省优势矿产资源高效利用工程实验室,贵州贵阳550025 [5]复杂地质矿山开采安全技术工程中心,贵州贵阳550025 [6]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400040

出　　处：《煤矿安全》2014年第10期10-13,共4页Safety in Coal Mines

基　　金：贵州省科技厅国际合作项目(黔科外G(2010)7008号)

摘　　要：利用改造后的伪三轴渗流设备,以贵州玉舍煤矿K1煤层的型煤试件为研究对象,进行了恒定温度和瓦斯压力,不同围压条件下含瓦斯煤的三轴压缩试验,探究了实验条件下含瓦斯煤的变形特性及其力学参数的变化规律。结果表明:随着围压的增加,含瓦斯煤的应力-应变曲线斜率有变陡趋势,峰值应变有增加趋势,抗压强度和弹性模量逐渐增大,泊松比减小。Based on the briquette specimens of the K1 seam of Yushe Mine in Guizhou, the experiment for studying triaxial compression of coal containing methane under different confining pressures are carried out when the temperature and gas pressure are constant, and the change law of the deformation properties and mechanical parameters of coal containing methane are explored. The experimental resuits show that with the increasing of confining pressure, the slope of stress - strain curve has steepened trend, peak strain has increasing trend, triaxial compressive strength and elastic modulus increases, the poisson ratio decreases.

关 键 词：围压 含瓦斯煤 抗压强度 弹性模量 三轴压缩 变形特征 力学参数 煤与瓦斯突出 

分 类 号：TD713[矿业工程—矿井通风与安全]