摘要
单轴抗压强度是岩石重要的力学参数,对工程设计和现场施工尤为重要。常规单轴抗压强度需通过力学试验获取,过程较为复杂,建立岩石物理参数与岩石单轴抗压强度之间的关系,探究岩石单轴抗压强度快速预测方法具有重要意义。基于花岗岩密度、波速两物理参数得到花岗岩的P波模量,并通过测试得到花岗岩单轴抗压强度,通过回归分析建立单轴抗压强度关于P波模量的拟合关系式,构建了由物理参数推求力学参数的桥梁,并对回归方程进行显著性检验,检验结果表明,显著性良好,能较好地预测花岗岩的单轴抗压强度。
Uniaxial compressive strength is an important physical and mechanical parameter of rock,which is especially important for engineering design and on-site construction.The conventional methodolo⁃gy for obtaining uniaxial compressive strength of rock is mechanical test,the process is complicated.There⁃fore,it is of great significance to explore the rapid prediction methodology of rock uniaxial compressive strength by establishing the relationship between uniaxial compressive strength and rock physical parame⁃ters.The P-wave modulus of granite is obtained based on its density and wave velocity.At the same time,the uniaxial compressive strength of granite is obtained through testing.Adopting regression analysis,the fitting relationship between uniaxial compressive strength and P-wave modulus is established,thus obtain⁃ing the methodology for deriving mechanical parameters from physical parameters.It has been proved that the significance of the regression equation is good and can better predict the uniaxial compressive strength of granite.
作者
赵超
刘长武
周硼焜
缪易辰
ZHAO Chao;LIU Changwu;ZHOU Pengkun;MIAO Yichen(College of Water Resource and Hydropower,Sichuan University;State Key Laboratory of Hydraulics and Mountain River Engineering;Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology)
出处
《现代矿业》
CAS
2022年第10期126-128,132,共4页
Modern Mining
关键词
单轴抗压强度
花岗岩
P波模量
uniaxial compressive strength
granite
P-wave modulus
