Abstract
Since joint fissures are distributed extensively within rock masses, rock masses evolve into "sandwich" shapes when filled with joint fissures under long-term geological action, which causes rock discontinuities and destroys rock stability. This study reviews the advances in the shear-seepage properties of rock masses filled with joint fissures (RMFJFs) under static, quasistatic, and dynamic loads, including laboratory experiments, theoretical analysis, and numerical calculations. Results show that the shear properties of RMFJFs are closely associated with the strength of the fillings, the filling degree, and the roughness of the joints. RMFJFs develop under the stress of surrounding rocks, and their seepage properties are therefore affected by the surrounding stress and the filling degree, the rock layer thickness, and the porosity of the rock or fillings. However, detailed studies on the seepage properties of RMFJFs under cyclic loading, impact loading, and different shear rates are lacking. Finally, the existing problems in the research on the seepage properties of RMFJFs are clarified, a constructive research strategy is proposed, and the related trends are discussed in light of the overall mechanical behavior of RMFJFs.
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