深埋地下工程围护结构动态热特性及设计策略

Treatment strategy and thermal characteristics of deep underground engineering

建立了深埋地下工程围护结构的传热模型,分析了地温变化和运行时间围护结构传热负荷的影响,在埋深15 m以下地温变化影响较小,当工程运行时间超过2 000 h时,围护结构热负荷趋于稳定,并论述了地域性差异对围护结构负荷的影响,探讨了深埋地下工程热环境不同设计策略。

The heat tra nsfer m odel o f envelope in deep underground engineering is established.G round tem perature change and ru n tim e im pa ct on th e rm a l load is analyzed.W hen the depth is below 15 m,the underground tem perature va ria tio n w ould have little effect on the rm a l load o f envelop e.W hen the ru n n in g tim e is more than 2 000 h,th e rm a l load o f envelope tends to be stab ilize d va lu e.H ow the regional differences im pa ct on the envelope load was discussed and d iffe re n t treatm ent strategies fo r th e rm a l environm ent in deep underground en gineering were also exp lo re d.