冻结法凿井井壁破裂原因分析及对策

Cause Analysis and Countermeasures of Shaft Wall Fracture for Freeze Sinking

分析内蒙查干淖尔一号井井筒破裂的原因,有针对性地采取了提高混凝土早期强度、铺设聚苯乙烯泡沫板等措施,使井筒施工安全穿过了膨胀性的不稳定地层,为相似地质条件下井筒冻结法的施工提供了经验。

By briefly analyzing the geological conditions of vice mine and Aiming at the rupture causes of No.1 shaft in Chagannaoer,Inner Mongolia,the author proposed improving early strength of concrete and laying polystyrene foam board,which guaranteed shaft construction safely through the expansion of the unstable strata and gave experience for shaft freeze sinking construction of similar geological conditions.