Stability Analysis of Paste Filling Roof by Cut and Fill Mining

Ensuring the stability of paste false rooves is an important issue in study process filling and slicing mining. Here, a mechanical model roof created to analyze its lower mining order determine minimum thickness roof. We use FLAC3D simulate influence changes on The quantitative functional relationship between subsidence roof, optimal artificial finally obtained by development law plastic zone face. results show that when 3.2 m, can maintain self-stabilization state ensure normal layers. Because same upper layers beneficial for replacement equipment selection different layered working faces, determined be m.