| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1513800 | Energy Procedia | 2012 | 6 Pages |
In order to safety, efficient, and economy of roadway excavation in Malin coal, No.8 coal seam is chosen to study mining roadway support technology. Rheological properties of surrounding rock is studied by triaxial rheological test under step loading, a reasonable rheological model and parameters are selected and determined, and rheological mechanics model of surrounding rock is established; Considering with rock mass rheological properties, numerical model of mining roadway excavation process is established, deformation and failure mechanism of roadway rock is studied in different supporting structure parameters, and bolting optimized design scheme is proposed, which can control the deformation of roadway rock effectively; the field test result of sound wave on surrounding rock loosing zone shows that the design scheme can control the deformation roadway surrounding rock effectively and maintain its stability. The research has a certain guiding significance for the optimized design scheme of bolting projects.
