摘要
分析了目前深厚冲积层多圈孔冻结主要应用的以中圈为主冻结孔和以外圈为主冻结孔两种布孔方式的指导思想、特点,研究了两种布孔方式的实施效果,提出采用以外圈为主冻结孔及中/内圈为辅助/防片孔圈的多圈冻结孔布置方式,并与差异、异径等冻结工艺优化组合,能为冻结段安全快速施工创造有利条件。
The paper introduced current condition of shaft freezing by multi - row freezing tube applied in deep alluvium freezing, analyzed the characteristics and construction effect of two commonly used arrangement method of freezing holes, which set main freezing holes set in middle row and outer row respectively. A multi - row arrangement mode of freezing holes was proposed, with main freezing holes set in outer row, auxiliary and spalling -prevention holes set in middle and inner row, which could create favorable conditions for safe and rapid freezing construction, combining with processes of different freezing and reducer freezing.
出处
《煤炭工程》
北大核心
2015年第2期5-7,共3页
Coal Engineering
基金
国家科技支撑项目"深厚冲积层冻结千米深井高性能混凝土研究和应用"(2011BAE27B03)
关键词
深厚冲积层
主冻结孔
冻结孔布置
冻结壁
deep alluvium
main freezing hole
arrangement of freezing holes
freezing wall
