Abstract:

Shanghai-Kunming railway triple tunnel passes underground 703 m from the eastern peripheryof Lefeng coal mine of Xuanwei Ruifengheng Mineral Products Co. , LTD. The deformation of miningmatters not only safety of railway operation, but also the sustainability of Lefeng coal mine. This articlecalculates the horizontal displacement and vertical displacement of tunnel lining structure after miningLefeng C3 coal seam through ANSYS R18 based on finite element analysis method from the perspective ofmining principles and tunnel structure mechanics. It also checks some factors such as bending moment.axial force, and safety factor check. After securing Lephone C3 coal seam mining, it is safe to exploitShanghai-Kunming railway triple tunnel.

Key words: coal mine: mining deformation, railway tunnels, influence analysis