特厚冲积层冻结法凿井冻结壁径向位移特性研究  

Study on Radial Displacement Features of Freezing Wall in Mine Freezing Shaft Sinking in Ultra Thick Alluvium

作　　者：盛天宝[1,2] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]河南煤业化工集团有限责任公司,河南郑州450046

出　　处：《煤炭工程》2011年第11期82-84,共3页Coal Engineering

基　　金：河南省2006年科技发展计划项目(064460002)

摘　　要：为了掌握赵固矿区冻结法凿井冻结壁径向位移特征,采用数显式收敛计法对赵固一矿、二矿六个井筒进行了实测。实测结果表明:冻结壁位移特性可概括为快速增长、稳定增长和急剧增长三个阶段,要保证冻结段安全施工,井帮裸露时间应控制在第24h以内,冻结壁径向位移量控制在50mm以内;冻结壁径向位移速度与井帮温度负温值成反比。该成果对冻结法凿井具有一定的参考价值和指导意义。In order to understand the radial displacement features of the freezing wall in the mine freezing shaft sinking in Zhaogu Mining Area,a digital display type convergence instrument method was applied to the site measurements in six mine freezing shafts of Zhaoguo No.1 Mine and No.2 Mine.The site measured results showed that the displacement features of the freezing wall would include three stages,as the rapid increasing,steadily increasing and rapidly increasing.To ensure the safety construction at the freezing section,the exposed time of the mine shaft freezing wall should be controlled within 24 hours and the radial displacement of the freezing wall shall be controlled within 50mm.The radial displacement speed of the freezing wall would be an inverse ratio to the minus temperature value of the freezing wall.The achievements would have certain reference value and guidance to the mine freezing shaft sinking.

关 键 词：特厚冲积层 冻结法凿井 冻结壁 径向位移 

分 类 号：TD265.34[矿业工程—矿井建设]