砌碹巷道粉煤灰壁后充填机理及应用

Principle and application of fly ash filled between brickwork and surrounding rock

砌碹巷道破坏的主要原因是由于支护 -围岩接触关系不能适应巷道变形特性造成。本文分析了白皎煤矿砌碹巷道失稳机理 ,并对碹体壁后充填粉煤灰改善“支护 -围岩”关系的作用机理进行了分析 ,最后得到了现场验证。

The failure of brickwork roadway is mainly caused by the contacting relation of support and surrounding rock and inadequate deformation of support .The failure mechanism of the brickwork roadway of Beijiao colliery,and the function and the mechanism of fly ash filled between surrounding rock and brickwork are discussed .It has proved by practice that fly ash filled between brickwork and surrounding rock can improve the maintainence of roadway.