CAJ | 학술논문

对全线采用屏蔽门系统的西安地铁2号线某区间隧道及与之相连的站台隧道温度进行长期监测,并建立其全尺寸CFD动态仿真模型,参考实测值设定隧道壁面温度,对地铁线路运营初期和远期轨顶和轨底( OTE/UPE)排热风机开启及关闭4种工况下列车在其中行驶过程中隧道内的气流温、速度和压力场进行动态模拟。结果分析表明,地铁线路运营初期,即使不开启OTE/UPE风机,在炎热的夏季地铁隧道内也不会出现超温现象；而运营远期,若仍不开启OTE/UPE风机时,则隧道内温度较高；当区间隧道壁温升高到34℃,夏季站台隧道超温现象严重；当区间隧道壁温达到28℃,下游站台隧道有可能超温。运营初期采取不开启OTE/UPE风机的运行模式是可行的。
대전선채용병폐문계통적서안지철2호선모구간수도급여지상련적참태수도온도진행장기감측,병건립기전척촌CFD동태방진모형,삼고실측치설정수도벽면온도,대지철선로운영초기화원기궤정화궤저( OTE/UPE)배열풍궤개계급관폐4충공황하열차재기중행사과정중수도내적기류온、속도화압력장진행동태모의。결과분석표명,지철선로운영초기,즉사불개계OTE/UPE풍궤,재염열적하계지철수도내야불회출현초온현상；이운영원기,약잉불개계OTE/UPE풍궤시,칙수도내온도교고；당구간수도벽온승고도34℃,하계참태수도초온현상엄중；당구간수도벽온체도28℃,하유참태수도유가능초온。운영초기채취불개계OTE/UPE풍궤적운행모식시가행적。
After a long-term monitoring of the temperature of the tunnel and connecting platform on No. 2 Xi'an Metro Line to which Platform Screen Door System is applied, a full-scale CFD simulation model is established. The tunnel wall temperature is set with reference to measured values. Four cases representing OTE/UPE fan turn-on and turn-off during initial and long-term operational periods are dynamically simulated to obtain temperature, velocity and pressure of the air flow in the tunnel when a train runs through. Results indicate that overheat never happens in the tunnel in hot summer even if OTE/UPE fans are turned off during the initial operational period. However, after a long-term operation, the temperature in the tunnel will be quite high if OTE/UPE fans are still turned off. Serious overheat occurs in hot summer in the tunnel of metro platform when the tunnel wall temperature reaches 34° C. When the tunnel wall temperature reaches 28° C, the down platform tunnel may suffer overheat. Therefore, turn-off of OTE/UPE fans during initial period is feasible.