Simulation on stability of surrounding rock of large section chambers in deep structural complex areas
Abstract：-770 m dilatancy pump house of a coal mine was studied using the integrated method combining theory analysis,numerical simulation with field study,to acquire the reasons for deformation and failure of surrounding rock of large section chamber in deep structural complex areas and control countermeasures of stability.The software FLAC3D was applied to analyze the characteristics of stress field,displacement field,and failure zone of interchange chambers of pump after coupling support,and to evaluate the stability of the chambers and the rationality of the support parameters.The field experiment shows that displacement of surrounding rock of chamber is very little;the roof and floor movement is only 12.5 mm within 30 days,and displacement of walls reaches 7.5 mm;surrounding rock stability of the chamber is relatively good,reaching ideal supporting effect.
Keywords：deep structural complex areaslarge section chamberssurrounding rock stabilitynumerical simulation
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)