【摘要】 通过对松散岩块进一步的压实试验研究,得出了松散岩块的侧限压缩模量与孔隙率及岩块抗压强度之间的关系。研究结果表明,松散岩块的侧限压缩模量与孔隙率之间既可用指数关系也可用幂函数关系来描述,二者都具有很高的相关系数。同时,岩块强度与压缩模量之间呈线性关系,回归所生成的直线方程斜率和截距均与孔隙率有很强的相关性。最后得出压缩模量与岩块强度、孔隙率之间的统一关系式。更多还原

【Abstract】 The compressive modulus,which characterizes the deformation behaviors of loose rock blocks under confining constraint,is related with many factors,such as the pore ratio,rock strength and so on. Among them,the pore ratio is one of the most important factors. Through testing,the relationship between compressive modulus and pore ratio is revealed. The testing results show that the compressive modulus increases fast with the decrement of pore ratio. By regression analysis,the relationship between them can be described by either exponent or power function,both with very high correlation coefficient more than 0.9. The testing results indicate that the compressive modulus is approximately linearly related with rock strength within a certain rang of rock strength of 15～45 MPa and increases with rock strength. The further regression analysis suggests that both the slopes and the intercept of the regressive linear function are closely related to pore ratio. The regressive slope increment increases with the decrement of pore ratio and their relationship can be described by either the exponent function or the power function,both with very high correlation coefficient more than 0.9. The relationship between intercept and pore ratio can be described by the polynomial function with a correlation coefficient more than 0.9. At last,the relationship among compressive modulus,rock strength and pore ratio can be written as a uniform function. By comparing the two functions containing the parameter of pore ratio,obtained by two different ways with and without considering rock strength,a certain unification is found between the two functions.更多还原