单层井壁新工艺在门克庆煤矿风井的研究与应用

The Research and Application of New Technology of Single-Wall in Menkeqing Minefield

摘要: 门克庆井田各煤层埋藏较深,一号回风立井深度达749.5 m，穿过各地层富水性较强，为保证井筒施工质量、进度、投资等指标达到要求，采用单层井壁新技术、新工艺，经过现场管控及工艺优化，顺利施工到底，并根据井帮解冻情况及时进行壁后注浆，达到预期效果。 The burial depth of all coal seams in Menkeqing minefield is high. The depth of 1st vertical shaft for ventilation is 749.5 m and the water-abundance of each stratum that the shaft penetrates is stronger. To ensure that the construction quality, progress, investment and other indicators of the shaft meet the demand, the new technology of monolayer side wall is adopted. After field control and process optimization, the construction successfully reached the bottom. Moreover, backfilling grouting was conducted timely according to the unfreeze condition of side wall and the desired effect was achieved.