Upon the analysis of the interior and exterior pressures observed on the double-tubbing shaftwalls of the West Ventilation Shaft in Xieqiao Coal Mine of Huainan, deep-going investigations are made into foreign loads o...Upon the analysis of the interior and exterior pressures observed on the double-tubbing shaftwalls of the West Ventilation Shaft in Xieqiao Coal Mine of Huainan, deep-going investigations are made into foreign loads on the shaftwalls of thes kind at each working stage and into the distributiona patterns of interior pressures. As a result, a calculation model is established for forecasting exterior loads on the shaftwalls by using the grey theory.展开更多
文摘Upon the analysis of the interior and exterior pressures observed on the double-tubbing shaftwalls of the West Ventilation Shaft in Xieqiao Coal Mine of Huainan, deep-going investigations are made into foreign loads on the shaftwalls of thes kind at each working stage and into the distributiona patterns of interior pressures. As a result, a calculation model is established for forecasting exterior loads on the shaftwalls by using the grey theory.
