The sliding of rock blocks along rock discontinuities is caused by accumulated deformation and can result in disasters such as rock bursts and earthquakes. Creep along rock discontinuities leads to the accumulation of sliding deformation and random instability over time. The initial stress and deformation are important factors that strongly influence creep behavior. To investigate the influence of the initial state on the creep behavior of rock discontinuities, shear creep tests with loading–unloading shear pre-stress paths and shear creep tests with different initial stress and deformation states were conducted on artificial rock discontinuity samples prepared according to Barton’s standard roughness profiles. The creep behavior characteristics were investigated in detail according to the initial stress and deformation conditions. The results show that the initial stress and deformation states, which are related to crack development and plastic deformation accumulation, strongly influence creep behavior. Larger initial stress and deformation produce lower creep deformation, creep rates, and accelerated velocities. Samples with higher joint roughness coefficients produce more noticeable creep because more asperities provide additional space for creep to occur. A limit curve is also proven to exist, which allows the stress–deformation coordinate system to be divided into stable and unstable regions. When the current stress state of a sample is insufficient to drive the formation of further cracks or deformation in the rock discontinuity, the deformation and stress remain stable and no further creep is observed.

岩块沿岩石不连续面滑动是由累积变形引起的，可能导致岩爆和地震等灾害。随着时间的推移，沿着岩石不连续性的蠕变会导致滑动变形和随机不稳定的积累。初始应力和变形是强烈影响蠕变行为的重要因素。为研究初始状态对岩石间断面蠕变行为的影响，对根据 Barton 理论制备的人造岩石间断面试样进行了加载-卸载剪切预应力路径的剪切蠕变试验和不同初始应力和变形状态下的剪切蠕变试验。标准粗糙度轮廓。根据初始应力和变形条件详细研究了蠕变行为特征。结果表明，与裂纹发展和塑性变形累积相关的初始应力和变形状态对蠕变行为有很大影响。较大的初始应力和变形会产生较低的蠕变变形、蠕变速率和加速速度。具有较高接头粗糙度系数的样品会产生更明显的蠕变，因为更多的凹凸为蠕变发生提供了额外的空间。还证明存在极限曲线，该曲线允许将应力-变形坐标系划分为稳定区域和不稳定区域。当样品的当前应力状态不足以推动岩石不连续性中进一步裂缝或变形的形成时，变形和应力保持稳定，不会观察到进一步的蠕变。它们与裂纹发展和塑性变形积累有关，强烈影响蠕变行为。较大的初始应力和变形会产生较低的蠕变变形、蠕变速率和加速速度。具有较高接头粗糙度系数的样品会产生更明显的蠕变，因为更多的凹凸为蠕变发生提供了额外的空间。还证明存在极限曲线，该曲线允许将应力-变形坐标系划分为稳定区域和不稳定区域。当样品的当前应力状态不足以推动岩石不连续性中进一步裂缝或变形的形成时，变形和应力保持稳定，不会观察到进一步的蠕变。它们与裂纹发展和塑性变形积累有关，强烈影响蠕变行为。较大的初始应力和变形会产生较低的蠕变变形、蠕变速率和加速速度。具有较高接头粗糙度系数的样品会产生更明显的蠕变，因为更多的凹凸为蠕变发生提供了额外的空间。还证明存在极限曲线，该曲线允许将应力-变形坐标系划分为稳定区域和不稳定区域。当样品的当前应力状态不足以推动岩石不连续性中进一步裂缝或变形的形成时，变形和应力保持稳定，不会观察到进一步的蠕变。较大的初始应力和变形会产生较低的蠕变变形、蠕变速率和加速速度。具有较高接头粗糙度系数的样品会产生更明显的蠕变，因为更多的凹凸为蠕变发生提供了额外的空间。还证明存在极限曲线，该曲线允许将应力-变形坐标系划分为稳定区域和不稳定区域。当样品的当前应力状态不足以推动岩石不连续性中进一步裂缝或变形的形成时，变形和应力保持稳定，不会观察到进一步的蠕变。较大的初始应力和变形会产生较低的蠕变变形、蠕变速率和加速速度。具有较高接头粗糙度系数的样品会产生更明显的蠕变，因为更多的凹凸为蠕变发生提供了额外的空间。还证明存在极限曲线，该曲线允许将应力-变形坐标系划分为稳定区域和不稳定区域。当样品的当前应力状态不足以推动岩石不连续性中进一步裂缝或变形的形成时，变形和应力保持稳定，不会观察到进一步的蠕变。还证明存在极限曲线，该曲线允许将应力-变形坐标系划分为稳定区域和不稳定区域。当样品的当前应力状态不足以推动岩石不连续性中进一步裂缝或变形的形成时，变形和应力保持稳定，不会观察到进一步的蠕变。还证明存在极限曲线，该曲线允许将应力-变形坐标系划分为稳定区域和不稳定区域。当样品的当前应力状态不足以推动岩石不连续性中进一步裂缝或变形的形成时，变形和应力保持稳定，不会观察到进一步的蠕变。