深厚黏土层冻结井筒冻结壁径向位移分析  

Analysis on Radial Displacement of Freezing Wall in Mine Freezing Shaft in Deep Thick Clay

作　　者：王恒 赵玉明 李晓伟 WANG Heng;ZHAO Yuming;LI Xiaowei(Beijing China Coal Mine Engineering Company Limited,Beijing 100013,China;Henan Guolong Mine Construction Company Limited,Zhengzhou 450000,China)

机构地区：[1]北京中煤矿山工程有限公司,北京100013 [2]河南国龙矿业建设有限公司,河南郑州450000

出　　处：《建井技术》2019年第6期20-23,共4页Mine Construction Technology

摘　　要：赵固二矿西风井采用冻结法施工,穿过704.6 m深厚黏土层,冻结管断裂风险较大。井筒掘砌过程中,对冻结壁径向位移进行了实测,并兼顾其他影响因素。结果显示,70个位移监测层位中,共有57%的监测层位位移超过50 mm警戒值。The west ventilation shaft of Zhaogu No.2 Mine was constructed with a ground freezing method.The mine shaft was passed through deep thick clay with a thickness of 704.6 m.The freezing pipe had a high broken risk.During the mine shaft lining processing,a site measurement was conducted on the radial displacement of the freezing wall in the mine shaft and the other influence factors were considered.The results showed that in 70 displacement measuring layers,the displacements of the 57%measuring layers were over the warning value of 50 mm.

关 键 词：深厚黏土层 冻结壁 径向位移 冻结管断裂 

分 类 号：TD265.3[矿业工程—矿井建设]