Stability Analysis Based On Surface Subsidence Of Shendan PDL Benxi Section

This paper detailed survey engineering geological conditions of ShenDan Passenger Dedicated Lines from DK53+200 to CK67+200 and detailed situation of goaf under ShenDan Passenger Dedicated Lines from DK63+300 to DK65+700, researched and analysised the features of residual movement and deformation caused by coal mining. it analysised and expected the surface movement duration on the basis of drilling data. This paper researched the variation rule of the residual sinking coefficient, using residual sinking coefficient, in the basis of hypothesis at the Formation system on the residual deformation stage, applied probability integral method and probability integral method, expected the residual mobile and deformation for ShenDan Passenger Dedicated Lines during the construction and operating period. It adoptted the FLAC3D software from ITASCA consulting company in U.S.A, application the characteristics ofstep in Explicit finite-difference, simulated the residual movement and deformation ShenDan Passenger Dedicated Lines during the construction and operating period, and the results obtained are mutually validateed the results with probability integral method. on the basis of probability integral method and numerical simulation, it won't be happened destructive movement and deformation of ShenDan Passenger Dedicated Lines during the construction and operating period.