在模拟地层条件下，利用“MTS 系统”，对川东北河坝构造陆相地层样品作波速及力学参数的同步测试，分层位、分岩性研究纵向上岩石力学参数的变化规律及动态、静态参数的关系。地层条件下，砂岩的抗压强度、弹性模量、泊松比、内聚力和内摩擦角分别为241.87 MPa，35.5 GPa，0.27，29.32 MPa 和36.1°；泥岩的抗压强度、弹性模量、泊松比、内聚力和内摩擦角分别为115.63 MPa，24.8 GPa，0.33，10.11 MPa 和19°；砂岩的抗张强度为自流井组>须家河组>沙溪庙组>千佛崖组，平均值分别为7.09 MPa，6.2 MPa，4.72 MPa，4.51 MPa。岩石力学参数受颗粒大小、泥质含量、胶结物性质及孔隙度大小的影响。饱水后岩样的纵波速度、弹性模量、泊松比较饱水前明显增加。随着围压的增大，岩石塑性变形的比例也增大，更多地表现出弹-塑性变形特征。

Based on the equipment ofMTS, the wave velocity and mechanical parameters of sands and mudstones from northeast of Sichuan are taken into synchronous experimentation under the condition of simulated formation. The varying regular pattern and the relationship between dynamic and quiescent parameters on the vertical formation are discussed. Under the condition of simulated formation, in terrestrial formation, the average compressive strength value of sand is 241.87 MPa, and it is 115.63 MPa of the mudstone. The average elastic modulus value of sand is 35.5 GPa, and it is 24.8 GPa of the mudstone. The average poisson ratio value of sand is 0.27, and it is 0.33 of the mudstone. The average cohesion value of sand is 29.32 MPa, and it is 10.11 MPa of the mudstone. The average internal frictional angle value of sand is 36.1 , and it is 19 of the mudstone. The relationship of tensile strength on the terrestrial formation is J₂z>T₃x>J₂s>J₂q, and the average value of tensile strength is 7.09MPa, 6.2MPa, 4.72MPa, 4.51MPa. The value of rock mechanic parameters is affected by the grain size, shale content, binding material’s property and the porosity. After being saturated bywater, the longitudinal velocity, elastic modulus and the poisson ration is increased remarkably than before. With the broadening of confinement pressure, the plastic deformation proportion is increasing, and the distortional character is displaying to elastic-plastic deformation more.