顾桥矿东回风井冻结段过厚膨胀黏土层关键技术  

Key Techniques of Over Thickness Swelling Clay Layer in Frozen Section in East Wind Shaft of Guqiao Mine

作　　者：孙仕元[1] 李翔[1] 

机构地区：[1]淮南矿业集团顾桥煤矿,安徽凤台232131

出　　处：《煤炭技术》2017年第3期27-29,共3页Coal Technology

摘　　要：针对顾桥煤矿新建回风井冻结法过厚膨胀黏土层工程问题,分析了其外壁受力特征,提出了优化冻结减小不均匀压力。采用高强高性能混凝土,提高砼早期强度和抗冻性能。配合短段掘砌、强化井帮防水和隔热等综合措施,安全通过了累深-351 m处厚40 m的膨胀性黏土层,可为同类条件建井工程提供参考。According to the new air shaft of Guqiao coal mine freezing thick swelling clay layer engineering problems, the force characteristics of the outer wall are analyzed,and the optimization of the uniform pressure is put forward. High strength and high performance concrete is used to improve the early strength and frost resistance of concrete. With the short section of digging, strengthening the water and heat insulation and other comprehensive measures, safety, through the accumulation of thick 40 m deep -351 m swelling clay layer, which can provide reference for construction of similar conditions.

关 键 词：冻结法凿井 厚膨胀黏土层 关键技术 

分 类 号：TD26[矿业工程—矿井建设]