Analysis of Soft Rock Deformation Control and Stress Arch Formation in Deep Buried Tunnels
This paper discusses the formation of stress arches,the strength and confining pressure of stress arches,and the deformation control mechanism of surrounding rocks in deep buried tunnels in high stress soft rock environments.It analyzes the effects of advanced geological prediction,reduction of surrounding rock disturbance,mathematical simulation and monitoring,active pressure support,and stable transition of surrounding rock constraints on deformation control and stress arch formation,as well as successful cases of active pressure support.It clarifies that the active pressure support system that controls the release of surrounding rock stress while providing timely confining pressure and measures to ensure stable transition of surrounding rock constraints can promote the formation of stress arch,and can bear the compressive stress in high stress environments.
soft rockdeep tunnelhigh geostressdeformation controlstress archsurrounding rock constraint transitionpressure support
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