关键词: 斜井井筒, 井筒涌水, 高压旋喷注浆, 壁后注浆

Abstract: in order to solve the technical problem of water gushing from the shaft wall after the formation of inclined shaft in Camel Mountain coal mine,A rotary jet grouting support method is proposed to cut off the water inflow to make up the water source, fill the loose circle behind the shaft wall and improve the stability of the surrounding rock of the shaft.Based on the analysis of voids and cavities behind the shaft wall caused by water gushing and sand carrying in the Quaternary System of the main inclined shaft and the weathered zone of the bedrock at the lower part of luoluoshan coal mine, the water supply source of water gushing in the main inclined shaft is cut off by rotary jet grouting method, and the voids and cavities formed by long-term water gushing and sand carrying in the shaft are filled by back wall grouting technology, so as to strengthen the shaft and further block the water gushing in the shaft.At the same time, the grouting treatment effect is verified by means of water level observation in the treatment area, flow field change analysis, borehole verification and water inflow change analysis.The results show that rotary jet grouting and back wall grouting can not only block the water inflow of the shaft, but also fill and strengthen the voids and cavities behind the shaft wall, so as to eliminate the potential safety hazards during the later production and operation of the shaft, which has a good reference value for the treatment of water inflow of inclined shaft.