高地温引水隧洞施工通风降温数值模拟研究

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中图分类号：U455 文献标志码：A 文章编号：2095-2945（2025）18-0050-08

Abstract：Toaddressthegeothermalhazardinwaterdiversion tunnels，numerical simulationswereconductedusingthe COMSOLMultiphysicstoinvestigatethechangesiinteraltemperatureduringtunnelventilation.Theefectsofvariousfactors， includingdiferentventltionspeeds，ventilaiontemperatures，surroundingrocktmperatures，anderalinsulationlars，othe coling performanceof tunelventilationwerestudied.Thecalculationresultsindicatethatwhen theairtemperatureissetat 5% and 15qC ，the ambient temperature within the range of 10～30m behind the tunnel face can be reduced to below 28‰ within half an hour of ventilation.After two hours of ventilation，using a lower airflow velocity （ v =0.5 m/s） can reduce the overall tunnel temperature to a level close to that achieved with a higher airflow velocity（ u =0.9 m/s）. When the surrounding rock temperature reaches 60% ，except for the area 10m behind the tunnel face，the temperatures at farther locations can be reduced to below with sufficientventilation time.With theapplicationofthermalinsulation layers，thetemperaturereductionsat 10m and 30m can further reach 41.1% and 14.0% ，respectively. The research results can provide reference for controlling high -temperature heat damage in diversion tunnels.

Keywords：diversion tunnel;ventilationandcoling;numerical simulation;heat insulationmeasures;highland heathazard

随着我国工业化和城镇化进程的持续推进，国民日益增长的生存发展渴望以及对资源开发利用的迫切需求，已成为推动能源结构优化调整和加速基础设施建设的强劲动力。（剩余8225字）