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 f...

cephalometric norms of mcnamara analysis have been studied in various populations due to their optimal efficiency. dolphin cephalometric software greatly enhances the conduction of this analysis for orthodontic measurements. however, dolphin is very expensive and cannot be afforded by many clinicians in developing countries. a suitable alternative software program in farsi/english will greatly ...

The accurate prediction and evaluation of stress displacement fields surrounding rock is the fundamental premise for deformation control soft tunnels under high geo-stress condition. However, due to complicated mechanical characteristics with confining pressure influence, current numerical simulation method usually regards parameters as constant ignores variation these in process, which leads r...

Background: Coal mining requires safe and effective roadway support to ensure production worker safety. Anchor is a common method used for controlling the roof of coal seams. This study aims analyze effectiveness different anchor schemes provide theoretical basis designing support. Methods: The authors computer simulation tool called FLAC3D simulate spacing between bolts, bolt length, cable con...