含不同倾角裂隙类岩石试件力学参数试验研究

基于相似原理,制备出含不同角度裂隙类岩石试件及完整试件,分别对试件进行单轴压缩试验,测出其单轴峰值强度、弹性模量和泊松比;通过巴西劈裂法,测得含不同角度裂隙的试件及完整试件的抗拉强度;通过进行三轴压缩破坏试验,测出其三轴峰值强度,并结合单轴峰值强度,画出裂隙试件及完整试件的莫尔应力圆,从而计算出它们的内摩擦角、内聚力,然后分析这些力学参数的变化规律。

Study the test specimens of containing the different crack rock mechanics parameters

Based on the similarity principle, the preparation of the fissure type of rock specimen containing different angles and whole specimen, uniaxial compression test was carried out on the specimen by respectively, that to measure the peak uniaxial strength, elastic modulus and poisson"s ratio; The tensile strength of the different angles and the complete specimens was measured through the Brazilian splitting method. Through triaxial compression failure test, measure the third peak strength, combined with the uniaxial peak strength, and then draw out the Mohr stress circle, Angle of internal friction and cohesion is calculated and then analysis the change rule of mechanical parameters.