丁集矿第二回风井冻结壁融化温度场数值计算分析  

Analysis on numerical calculation of thawing temperature field in freezing wall of No.2 Air return ventilation shaft in Dingji Mine

作　　者：孙仕元 沈仁为[1] 张贵 姚直书[2] 王晓健[2] 方浩 SUN Shiyuan;SHEN Renwei;ZHANG Gui;YAO Zhishu;WANG Xiaojian;FANG HAO(Dingji Mine,Huaihu Coal and Electric Power Company Limited,Huainan 232142,China;School of Civil Engineering and Architecture-Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]淮沪煤电有限公司丁集煤矿,安徽淮南232142 [2]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《建井技术》2023年第2期73-77,共5页Mine Construction Technology

摘　　要：为解决井筒冻结壁在融化过程中温度场难以预测的问题,利用ANSYS有限元软件,对丁集煤矿第二回风井冻结工程各个层位融化期间冻结壁平均温度、冻结壁融化阶段测温孔温度进行了数值模拟预测分析,结果表明:该风井不同层位冻结壁在融化阶段模拟的测温孔温度与实测值相符;在融化期间冻结壁的平均温度随融化时间的增加而缓慢升高,符合实际情况;得到了各个层位冻结壁完全解冻所需的时间,为井筒壁间注浆提供了依据,保证了井筒的安全。In order to solve a hard prediction problem of a temperature field during a thawing process of a freezing wall in the mine shaft,an ANSYS finite element software was applied to a prediction analysis of a numerical simulation on an average temperature of the freezing wall during each layer thawing period of No.2 Air Return ventilation Shaft freezing project in Dingji Mine and the temperature of the temperature measuring hole during the thawing stage of the freezing wall.The analysis results showed that the temperature of the simulated temperature measuring hole during the thawing stage of the different layer freezing wall in the ventilation shaft was conformed to the real measured value.The average temperature of the freezing wall during the thawing period was slowly increased with the thawing time increased and was met with the practical circumstances.The time required for a complete thawing of each layer freezing wall obtained could provide the basis to the grouting between the walls of the mine shaft and could ensure the safety of the mine shaft.

关 键 词：冻结壁 融化温度场 数值模拟 预测 壁间注浆 

分 类 号：TD265.3[矿业工程—矿井建设]