高地溫引水隧洞施工通風(fēng)降溫?cái)?shù)值模擬研究

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中圖分類(lèi)號(hào)：U455 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：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

隨著我國(guó)工業(yè)化和城鎮(zhèn)化進(jìn)程的持續(xù)推進(jìn)，國(guó)民日益增長(zhǎng)的生存發(fā)展渴望以及對(duì)資源開(kāi)發(fā)利用的迫切需求，已成為推動(dòng)能源結(jié)構(gòu)優(yōu)化調(diào)整和加速基礎(chǔ)設(shè)施建設(shè)的強(qiáng)勁動(dòng)力。（剩余8225字）