Study on full space truss and anchor coordinative support of mine large cross section broken roadway

according to a large cross section,broken expansion,high deformation and others the conventional suppot would easil cause uncoordinated deformation and stability ost in the igh cutin full -mnechanized op cal aving mining face in a deep mine,vased on a systematic deep analysis on the surounding rock deformation failure mechanism of mine large cross section sof and broken roadiway in Lu an Mining Area,rom a view of the 3D space suppot coordinativeload and suroundng rock coordinative defomation a coordinative suppor technology of ful space pre-sress fuss and anchor was provided.T7he paper stated suppor structure,suppormechanism and advanages of fulspace truss and anchor.W ith design on coordinative suport plan of lul space russ and anchor,a FLAC3 Dwas aplied to numericasimulation analysis on suppor efect.The 3D space distibution law of roof pre-stress fied infull space truss and anchor suppor roadiway was obtained under diferentpretension conditions. The results showed that full space truss and anchor support could form a 3D closed loading structure.