三软煤层巷道围岩注浆加固技术研究

Research on Grouting Reinforcement Technology for Three Soft Coal Roadway

针对赵家寨煤矿二_1煤层赋存条件复杂、煤层厚度变化较大,大范围存在以煤质松软、块度较小、呈松散颗粒状,且极易产生挤压流变为主要特征的颗粒化煤体的特点,从加固颗粒化煤体巷道的稳定性出发,提出了对颗粒化煤体进行注浆加固的技术,使松散煤体固结成为一个整体,增强其自身的稳定性,满足矿井安全高效生产的需要。

Aiming at Zhaojiazhai coal mine two; coal seam, which geological condition is complex, thickness change is big and which is abundant of granular coal body, with the coal small, soft and loosely granular, and easy to generate the deformation of extrusion and flowing extremely. In order to enhance the stability of its own and meet the needs of producing safely and efficiently, starts from the stability of the roadway with granular coal body, puts forward the technology of grouting to granular coal body and making the loose coal consolidate into a coal whole.