深厚黏土层多圈管冻结壁温度场发展规律  

Development law of the multi-loop tube freezing temperature field in deep thick clay layer

作　　者：林斌[1] 王鹏 侯海杰 龙依 LIN Bin;WANG Peng;HOU Haijie;LONG Yi(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《煤田地质与勘探》2018年第4期135-141,共7页Coal Geology & Exploration

基　　金：高校博士点专项基金资助项目(200803610004)~~

摘　　要：多圈管冻结法施工已在深厚地层矿井中广泛应用,为了研究多圈管冻结壁温度场发展规律,以淮南某矿为研究对象,利用现场实测数据和FLAC3D软件2种方式对比分析研究多圈管冻结壁温度场发展规律。研究结果表明:冻结壁中圈孔最先开始交圈,其次是外圈孔,最后是内圈孔,测温孔温度和冻结壁平均温度随冻结时间的延长均呈对数关系下降,最终趋于稳定,冻结壁有效厚度在交圈后增长明显,随冻结时间的延长呈对数关系增大,主面和界面温度场曲线在冻结管处近似呈V形发展,主面和界面温度随冻结时间的延长逐渐降低,对比分析验证了冻结壁温度场模型数值模拟的可行性,数值模拟对工程施工具有参考指导价值。Multi-loop tube freezing method has been widely used in deep strata in mines,in order to study the development law of the multi-loop tube freezing temperature field,a mine in Huainan was studied,in this paper,the development law of the multi-loop tube freezing temperature field is analyzed by using the field measurement data and FLAC^3D software.Research results show that the circle hole in the freezing wall is the first to start,the second is the outer ring hole,and finally the inner ring hole,the temperature and the average temperature of frozen wall decreased in logarithmic relation with the extension of freezing time and tended to be stables finally,the effective thickness of the freezing wall increased obviously after the intersection,increased in logarithmic relation with the extension of freezing time,the temperature field curve of the main surface and interface was approximately V-shaped in the freezing tube,the temperature of the main surface and interface decreased with the extension of freezing time,the feasibility of frozen wall model was verified by contrastive analysis,numerical simulation provides reference value for engineering construction.

关 键 词：多圈管 冻结壁 温度场模型 数值模拟 

分 类 号：TU443[建筑科学—岩土工程]