The constitutive relation of rock joints in the percolation environment has always been a frontier research topic in the field of geotechnical engineering, involving nuclear waste disposal, dam foundation construction, tunnel tunneling, and other fields. In this study, a shear statistical damage constitutive model of rock joints considering seepage pressure was proposed, which takes into account the statistical damage, stage deformation characteristics and seepage action in the process of joint shear deformation. By introducing the seepage pressure reduction coefficient and establishing the relationship between the model parameters and the seepage pressure, the prediction of joint shear stress-displacement curves under different seepage pressures was achieved. The comprehensive comparisons between the theoretical results and the experimental results reveals that the model can accurately reflect the shear deformation law of joints and reasonably simulate the shear stress-displacement relationship of joints. And ultimately, the physical significance of the model parameters and their relationship with shear strength characteristics are discussed via the gray correlation method. The model and verification results presented in this study can deepen the understanding of the shear behavior of joints subject to high seepage pressure and contribute to the design and optimization of geotechnical engineering in the percolation environment.

渗流环境中岩缝的本构关系一直是岩土工程领域的前沿研究课题，涉及核废料处理，大坝基础建设，隧道掘进等领域。提出了一种考虑渗流压力的岩石节理统计剪切本构模型，该模型考虑了节理剪切变形过程中的统计损伤，阶段变形特征和渗流作用。通过引入渗流压力降低系数，建立模型参数与渗流压力之间的关系，实现了不同渗流压力下联合剪切应力-位移曲线的预测。理论与实验结果的综合比较表明，该模型能够准确反映节理的剪切变形规律，合理模拟节理的剪应力-位移关系。最后，通过灰色关联法讨论了模型参数的物理意义及其与抗剪强度特性的关系。这项研究中提出的模型和验证结果可以加深对高渗压接头的剪切特性的理解，并有助于渗流环境中岩土工程的设计和优化。通过灰色关联法讨论了模型参数的物理意义及其与抗剪强度特性的关系。这项研究中提出的模型和验证结果可以加深对高渗压接头的剪切特性的理解，并有助于渗流环境中岩土工程的设计和优化。通过灰色关联法讨论了模型参数的物理意义及其与抗剪强度特性的关系。这项研究中提出的模型和验证结果可以加深对高渗压接头的剪切特性的理解，并有助于渗流环境中岩土工程的设计和优化。