Title: Study on Abutment Pressure Distribution of Fully Mechanized Longwall Coal Mining Face in Old Residual Coal Mining Area
Abstract:Taking the residual coal area in No.6 coal seam of some coal mine as example,numerical simulation of residual coal mining under considtion of regular or irregular coal pillar was carried out with soft...Taking the residual coal area in No.6 coal seam of some coal mine as example,numerical simulation of residual coal mining under considtion of regular or irregular coal pillar was carried out with software RFPA,and the stress in coal pillars before the working face was analyzed and compared.The results showed that during residual coal mining,when the width of coal pillars became smaller gradually the pressure step in the working face became smaller,at the same time,the peak abutment pressure before working face,the distance between the position of peak abutment pressure and working face,the range of peak abutment pressure as well as the stress of coal pillar in front of the working face 20 m all became larger accordingly.Read More
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot