屯留煤矿南回风立井井筒采用冻结法施工,冻结壁解冻后,井架基础出现了不均匀沉降。通过对井架基础及时进行加固,阻止了井架进一步沉降偏移,保证了施工安全和凿井施工顺利进行。井架基础沉降处理施工方案合理,取得了预期效果。 The construction of the south return air shaft in Tunliu Coal Mine was carried out by freezing method. After the frozen wall was thawed, uneven settlement occurred on the derrick foundation. Through timely reinforcement of the derrick foundation, further settlement deviation of the derrick is prevented, and construction safety and construction of the shaft sinking are ensured. The derrick foundation subsidence treatment construction scheme is reasonable, and achieved the expected results.