The behavior of gob-side entry under dynamic pressure is totally different from the one driven after the movement of overlying strata above the adjacent coalface goal. The gob-side entry will experience severe roof la...The behavior of gob-side entry under dynamic pressure is totally different from the one driven after the movement of overlying strata above the adjacent coalface goal. The gob-side entry will experience severe roof lateral structural adjustments caused by adjacent coalface mining. Thus the deformation and failure characteristics of narrow coal pillar along the gob should be carefully considered. On the basis of the data of the gob-side entry obtained in a thin coal seam under dynamic pressure, the measures to reinforce the narrow coal pillar are put forward. In addition, the non-harmonious controlling of the rock structures and non-equilibrium gob-side entry deformation is proposed to avoid potential failure. Field practices show that the supporting problems of the gob-side entry under dynamic pressure can be well addressed, which could be used in other similar minin~ cases.展开更多
基金supported by the National Natural Science Foundation of China (Grant No.51104093)
文摘The behavior of gob-side entry under dynamic pressure is totally different from the one driven after the movement of overlying strata above the adjacent coalface goal. The gob-side entry will experience severe roof lateral structural adjustments caused by adjacent coalface mining. Thus the deformation and failure characteristics of narrow coal pillar along the gob should be carefully considered. On the basis of the data of the gob-side entry obtained in a thin coal seam under dynamic pressure, the measures to reinforce the narrow coal pillar are put forward. In addition, the non-harmonious controlling of the rock structures and non-equilibrium gob-side entry deformation is proposed to avoid potential failure. Field practices show that the supporting problems of the gob-side entry under dynamic pressure can be well addressed, which could be used in other similar minin~ cases.
基金Projects(52274128, 51904167, 52174159) supported by the National Natural Science Foundation of ChinaProject supported by the Taishan Scholars Project Special Fund of Shandong Province,China+1 种基金Project(KCF2204) supported by the Open Fund for the Henan Key Laboratory for Green and Efficient Mining&Comprehensive Utilization of Mineral Resources,ChinaProject(22KF01) supported by the Open Fund for the State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,China。
基金supported by the National Natural Science Foundation of China(Nos.51374112 and 51474134)the Fujian Provincial Natural Science Foundation of China(No.2014J01160)+1 种基金the Open Research Fund of State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology(No.SKLGDUEK1304)the Promotion Program for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University(No.ZQN-PY112),China
