沿空留巷工作面留巷巷道变形控制方法

On deformation control method of retained roadway in gob-side retained roadway face

东峰煤矿3G02工作面采用沿空留巷技术,工作面回采结束后,留巷巷道顶板下沉,底板底鼓,两帮移近量较大,针对以上问题,我公司采用巷道下沉严重段注浆锚索顶板加固、下沉轻微段补强锚索顶板加固及其它方法控制巷道的进一步变形,满足下一个工作面回采的需要。

The technology of retaining roadway along goaf is adopted in the 3G02 working face of Dongfeng coal mine. After the end of mining,the roof of retaining roadway sinks,floor heaves and two sides move closer. In view of the above problems,our company adopts grouting anchor cable roof reinforcement in serious subsidence section,slight subsidence reinforcement anchor cable roof reinforcement and other methods to control the further deformation of roadway to meet the need for next working face mining.