Author(s): Tianwen Li; Yonglai Zheng
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Keywords: Groundwater seepage Disaster prevention and control Rock deformation Numerical simulation
Abstract: The presence of groundwater poses a significant threat to the stability of surrounding rock in roadways. To study the effects of groundwater seepage on the deformation of surrounding rock in inclined coal seam roadways, this paper takes a specific inclined coal mine as the research background and establishes a mechanical model of the roadway, considering seepage effects. An elasto-plastic analytical solution for the deformation of surrounding rock under seepage conditions is derived. Based on relevant geological parameters, a numerical model for the excavation of the inclined coal seam roadway under seepage effects is developed, and a targeted support scheme is proposed. The results indicate that groundwater seepage has a significant impact on the deformation of surrounding rock in inclined coal seam roadways. Under an asymmetric support scheme, displacements of the roof and sidewalls are reduced by 22.2% and 19.3%, respectively, compared to the case without support. The concentration of pore water pressure is effectively alleviated, reducing the risk of seepage accidents.
Year: 2025