查干淖尔矿副井冻结温度场有限元分析  

Finite element analysis on freezing temperature field of Chagannaoer Mine auxiliary shaft

作　　者：沈科伟[1] 荣传新[1] 余文文[1] 

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《广西大学学报（自然科学版）》2011年第4期647-652,共6页Journal of Guangxi University（Natural Science Edition）

基　　金：国家科技支撑计划资助项目(2008BAB33B03);安徽高校省级自然科学研究重点项目资助(KJ2010A094)

摘　　要：针对内蒙古锡盟的查干淖尔煤矿冻土的热物理性质和影响冻结温度场的主要因素,利用ANSYS分析软件对查干淖尔煤矿副井的冻结温度场进行了有限元分析。在此基础上,研究了冻结温度场的扩展与分布规律。结果表明：冻结初期,冻结壁厚度增长较快,随冻结时间的延长,冻结时间达到120 d后,增速趋于缓慢。冻结壁厚度发展速度在前120 d约为0.0173~0.0373 m/d,120 d以后约为0.0065~0.0103 m/d,其冻结速度相对于东部地区的慢,且不同土层的冻结壁发展速度有：砂质粘土层〉粉砂岩层〉煤层。该成果为该地区冻结法凿井的设计和施工提供了重要的参考价值。According to the thermophysical properties of frozen soil in Chagannaoer Mine in Inner Mongolia Autonomous Region and the main factors that influence freezing temperature field,the freezing temperature field of Chagannaoer Mine was analyzed by ANSYS.Based on this,the extension of temperature field and its distribution was studied.The results show that at the beginning of freezing,the freezing wall grows thick quickly,then the growth slows down after 120 days.Before 120 days,the wall grows at a speed of 0.017 3~ 0.037 3 m/d,and after 120 days the speed is about 0.006 5~ 0.010 3 m/d.The freezing rate is lower than that of the eastern region,and the relation among the freezing rates in different layers is sandy clay siltstone layerscoal.The analysis results provide an important reference for the design and construction of the freeze-sinking method used in the region.

关 键 词：冻结法凿井 冻结壁 温度场 数值模拟 

分 类 号：TD262[矿业工程—矿井建设]