Abstract: The application characteristics of coalless pillar mining technology is discussed,the development history and current situation of coal mining technology in the Unite Kindem,Canada,South Africa and China are summarized,and the problem of coalless pillar mining existed in our county is analyzed.The results show that:cost of the filling materials and equipment of rock and air retaining lane is high,the traditional rock—stay roadway theory does not match the surrounding rock control requirements,and the design theory of roadway retaining support is not perfect;the position and size theory of leaving coal pillars in rock—air roadway is not perfect,and support technology and methods for controlling deformation and destruction of surrounding rock cannot fully meet the development needs of modern coal mines.Combined with the current problems of surrounding rock control theory and support technology,the future development direction and prospects of surrounding rock control technology for rock roadway and rock roadway are presented,so as to provide some reliable reference for the corresponding study work.

Key words: Non—pillar mining, Rock and gravel, Rock excavation, Surrounding rock control, Development status