Research on stability of surrounding rock of strip pillar Wongawilli mining technology under buildings
TAN Yi
GUO Wenbing
BAI Erhu
Abstract：In order to study stability of surrounding of strip pillar Wongawilli mining under buildings.Based on the geological conditions of Zhangcun coal mine,two kinds of tunnel layouts were put forward.Through the theoretical calculation and the numerical simulation,the stress filed,displacement field and plastic zone in the surrounding rock of different tunnel layouts were studied.Meanwhile,the movement deformation value of the surface ground after the coal mining completed and the influences to the surface buildings was calculated and analyzed.The results show that double entries and single wing mining method is better than single entry and double wings.The strip pillar Wongawilli mining technique can be used to mining face under village,effectively protect surface structures and improve the recovery rate of coal resources.
Keywords：strip pillar miningWongawillisurrounding rockcoal mining under buildings
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1-6 )