Study on Distribution Law of Super Thick Nappe on Mine Pressure of Deep Stoping Roadway
Mining and excavation activities are carried out under the super thick nappe,and the mine pressure distribution law is complex,making it difficult to control the deformation and failure of surrounding rocks.In order to obtain the mine pressure distribution law in the stoping roadway under the super thick nappe,taking the 360801 working face of Xinji No.l Mine as the engineering background,the influence of the thickness,lithology,and position of the nappe on the stoping roadway is obtained through FLAC3D numerical simulation research.The research results indicate that both the deformation amount and concentrated stress of the roadway in the presence of the nappe are greater than those in the absence situation of the nappe.The deformation amount of the surrounding rock in the stoping roadway is negatively correlated with the thickness of the nappe,and changes in the lithology and position of the nappe have a relatively small impact on the stoping roadway.
super thick nappedeep stoping roadwayinfluence factormine pressure distributionnumerical simulation
万方数据
维普
