西部软岩冻结井筒砌筑外壁对冻结壁温度场影响研究  

Effect of Outer Shaft Wall Masonry on Freezing Wall Temperature Field in Western Soft Rock Freezing Shaft

作　　者：姜国静 李昆 王建平 许舒荣 

机构地区：[1]北京中煤矿山工程有限公司,北京100013 [2]煤矿深井建设技术国家工程实验室,北京100013

出　　处：《煤炭工程》2015年第8期41-43,共3页Coal Engineering

基　　金："十二五"国家科技支撑计划资助项目(2012BAB13B02)

摘　　要：为研究深厚富水软岩地层砌筑混凝土井壁对冻结壁温度场的影响,采用现场实测与回归分析相结合的研究方法,选择在蒙陕地区大海则煤矿主立井掘进过程中进行温度场的监测,研究结果表明：井帮冻结软岩最大融化范围在400~600mm之间,发生在浇筑混凝土的7d内,冻结软岩最大融化距离S与井帮温度T成线性关系;井帮软岩在12~52d后全部重新回冻,软岩全部重新回冻时间D与井帮温度T成线性关系。研究得知,要确保混凝土浇筑后7d强度,应控制井帮温度高于-4.9℃,混凝土入模温度高于16℃。To study the influence of concrete wall masonry in deep soft rock water - rich strata on freezing wall temperature field, the temperature field during main shaft sinking in Dahaize Coal Mine was monitored, and the data was analyzed with regression analysis. The results show that, the largest thawing range of soft rock freezing shaft wall is between 400 600mm, which occurs within 7 days after concrete pouring, the maximum freezing soft rock melt distance S and shaft wall temperature T shows a linear relationship; shaft wall soft rock fully refreezes in the 12 - 52d, soft rock fully refreezing time D and shaft wall temperature T shows a linear relationship. To ensure the strength within 7d after concrete pouring, the shaft wall temperature should be controlled above -4. 9 ℃, and the temperature of casting concrete over 16℃.

关 键 词：冻结法凿井 西部软岩 温度场监测 井帮温度 

分 类 号：TD265[矿业工程—矿井建设]