大采高综采工作面三角区注浆加固技术研究

Study on Grouting Reinforcement Technology in Triangle Area of Fully Mechanized Mining Face with Large Mining Height

为了解决W5303大采高工作面端头区域顶板三角煤在采动作用下易破碎片帮的问题,利用注浆加固的方法对采动影响区进行注浆加固,共使用注浆材料65.85 t。加固后,煤壁片帮量大大减小,减小范围平均为0.4 m,有效地控制了煤壁的片帮。

In order to solve the problem that the triangle coal of roof in the end area of the W5303 large mining height working face is easy to break under the action of mining,the grouting reinforcement method is used to reinforce the mining affected area.A total of 65.85 t grouting material is used.After reinforcement,the amount of coal wall spalling is greatly reduced,and the average range of reduction is 0.4 m,which effectively controls the spalling of coal wall.