Some fault areas respond with stable, quasi-static motion, with slip rates comparable to tectonic rates of millimeters to tens of millimeters per year, inducing deformation development of rock mass in active fault zones. Herein, a mechanical model of fault creep was established considering that the displacement pattern is subject to the static displacement of the fault rupture based on the fault characteristics and geological conditions, and a function of different critical parameters was proposed and evaluated. Displacement distribution patterns were identified by the in situ stress, mechanical parameters of the rock mass in the fault zone, the coefficient friction of contact surfaces between the fault core and damage zone, and fault inclination angle. The higher the horizontal extrusion degree and the softer the rock mass of the fault core are, the higher the degree of displacement concentration in the fault core.
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Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 3, May-June, 2022.
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Liu, X., Zhang, C., Zhou, H. et al. Displacement Distribution Patterns and Governing Factors of Rock Mass in a Stable Creeping Fault Zone. Soil Mech Found Eng 59, 229–238 (2022). https://doi.org/10.1007/s11204-022-09806-7
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DOI: https://doi.org/10.1007/s11204-022-09806-7