Research on Surrounding Rock Pressure Relief in Deep Roadway by Borehole and Its Control Technology
ZHENG He
WANG Meng
XU Shaohui
Abstract：To counter to a series problems that the ground stress of the roadway surrounding rock and the fractured rock mass increased and the surrounding rock deformation was difficult to be under effective control by traditional support methods, a pressure-relief model for deep roadway by boreholes was established by using the finite difference method FLAC3D , and analysis was made on the stress distribution rules and deformation failure characteristics of roadway surrounding rock before and after pressure relief by boreholes. The results showed that the pressure-relief technique by boreholes can effectively release the deformation failure energy in the high-stress zone of the roadway surrounding rock, spur the high stress in the shallow surrounding rock to be transferred into the deep rock mass, and significantly improve the stress environment of surrounding rock. Based on the simulation analysis of the pressure-relief boreholes, the technical parameters of pressure relief by boreholes and the active support were rationally determined. Filed tests showed that the surrounding rock deformation was effectively controlled with this technology.
Keywords：deep roadwaypressure relief by boreholestress transfersurrounding rock control
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 51-55 )