综放工作面过陷落柱注浆加固技术的应用

Grouting Reinforcement Technology of Overfall Column in Fully-mechanized Working Face

漳村煤矿2503工作面内存在1个陷落柱X12,为保证矿井采掘衔接正常,不得不强行通过该陷落柱。为了保证工作面顺利通过陷落柱,防止出现片帮、冒顶、尤其是导通煤层下部奥灰水,提前对该陷落柱范围进行了注浆加固,改变了破碎围岩应力状态,工作面顺利通过了该陷落柱。实践证明,注浆加固技术对松散陷落柱体加固效果良好。

Get a Zhangcun Coal Mine 2503 face within a collapse column X12,in order to ensure the normal coal mining cohesion,and had to force through the collapse column. In order to ensure that working face pass of collapse,prevent help,roof caving,especially the conduction of coal seam bottom Mr Grey water,on the scope of the collapsing column in advance grouting reinforcement,changed the broken surrounding rock stress state,working through the collapse column. The practice shows that the grouting reinforcement technique has good effect on the reinforcement of loose collapse column.