Effect of Mining Height on Shield Resistance in Shallow Buried Longwall Panel

Based on the field conditions of Huojitu Coal Mine Shendong coal in Northern China, eight dynamic numerical models are developed to examine interaction between shield and surrounding rock longwall panel. The take into consideration actual mining process simulate change working resistance for same shallow burial but with different height conditions, ranging from 2.5 7 m. results show that average during basic roof initial periodic weighting is 20 times weight load under stratum conditions. By means dimensional analysis, a relation panels derived theoretically fitted by using data heights monitored simulations. This work has led new method selection support seams.