Stability Analysis Of East Dumping Site Slope In Anjialing Opencast Mine

Anjialing opencast mine is the key project"Ninth Five-Year" plan,due to great dump capacity of east dump and the disturbance factors such as the mining activities of the xiyi mine,itleads to a great security concern for the region of east dump.Based on physics research and field practise survey on coal seam and soil body of Anjialing mine,we put forward landslide destroyed instability mode and numerical parameters of the dump.Using numerical simulation software FLAC3D,we simulate impacts of the disturbance factors such an mining activities to stability of the east Dump slope and Calculate the safety factor of slope, Simulation result shows that the profile safety factor of east slope dump DP1 fos=1.55,DP2 profile safety factor fos=1.57 after second stripping,all are greater than 1.40,which meets the requirement reserve safety factor 1.3-1.5,we get further analysis of the room - and-pillar mining on the East Slope Dump impact through simulation experiments,proving a theoretical basis for the Lingtung Dump slope stability evaluations.