摘要
本文简述了高温高压实验条件下采用参数变动法测定岩石幂次蠕变律常数的理论基础和方法,并给出了居庸关花岗岩的实测结果。该方法可以利用较少数量的岩石试件得到较大温压范围内的蠕变常数,经进一步完善,有可能被扩大应用.
Theoretical basis and experimental procedure of a changing-parameter method for determination of the power-rule creep constants in steady-state creep test are described briefly and applied to Juyongguan granite. The experiment was carried out at a triaxial creep testing apparatus with solid confining medium. The creep constants of the granite, including stress exponent n, activation energy Qc, activation, volume Vc, and structure coefficient A, were determined at temperatures of 200-800℃, confining pressures of 200-600 MPa, and strain rates of 10^(-2)-10^(-9)s^(-1), This method is available to determine the creep constants of rock in a great range of temperature, confining pressure and differential stress with only a few rock specimens tested.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
1989年第3期191-200,共10页
Chinese Journal of Rock Mechanics and Engineering
