Abstract:
Aiming at the bad effect that huoluowan Coal Mine directly used the ready-made experiences and methods on forced caving of shendong Mining Area, combining the practical conditions in 22202 working face of huoluowan Coal Mine, the optimization of forced caving scheme was carried out based on methods of theoretical analysis, numerical simulation and field experience. The gangue showed convex type and accumulation plumpness was observed behind support. The basic roof was break when working face advanced 30 m far from open-off cut, the first weighting step distance was 38.5 m, which decreased 1 to 2 times of the period weighting step distance, strata behaviors level basically consistent with the period weighting. The optimization scheme has get good results.