核桃峪煤矿副立井冻结设计与施工  

Ground Freezing Design and Construction of Auxiliary Mine Shaft in Hetaoyu Mine

作　　者：王建平[1,2] 刘伟民 王恒 WANG Jianping;LIU Weimin;WANG Heng(Mine Construction Branch,China Coal Research Institute,Beijing 100013,China;National Engineering Laboratory for Deep Shaft Construction Technology in Coal Mine,Beijing 100013,China)

机构地区：[1]煤炭科学研究总院建井研究分院,北京100013 [2]煤矿深井建设技术国家工程实验室,北京100013

出　　处：《建井技术》2020年第5期43-45,共3页Mine Construction Technology

基　　金：国家“十二五”科技支撑计划资助项目(2012BAB13B02)。

摘　　要：核桃峪煤矿副立井原采用普通法施工,施工至234 m时,改为冻结法施工,井筒冻结深度950 m,为世界之最,冻结设计与施工难度都很大。重点介绍了该井筒冻结的特点、难点和需要解决的问题;提出了针对该工程难点的三大一小设计对策,以及采用同心双供液管与温控孔等新技术,解决了工程难题,为类似案例提供了经验。Originally a conventional construction method was applied to an auxiliary mine shaft of Hetaoyu Mine.When the mine shaft was constructed to a depth of 234 m,the mine shaft construction method was changed to a ground freezing construction method.The freezing depth of the mine shaft was 950 m and was the deepest ground freezing depth in the world.The ground freezing design and the construction difficulty was very hard.The paper emphasized the introduction on the features and difficulties of the mine shaft freezing and the problems to be solved.The paper pointed out the three big and one small design measures to the engineering difficulties and a concentric double liquid supply pipe and a temperature control borehole as well as other new technology were applied to solve the engineering difficulties.The experiences could be provided to the similar cases.

关 键 词：立井 冻结设计 冻结施工 井壁保护 

分 类 号：TD265.3[矿业工程—矿井建设]