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隧道建设(中英文) ›› 2019, Vol. 39 ›› Issue (S1): 139-145.DOI: 10.3973/j.issn.2096-4498.2019.S1.020

• 研究与探索 • 上一篇    下一篇

地下交通转换平台射流通风特性及风流组织方式研究

戴妙娴1, 张天航2, 殷铭简2, 3, 罗淳厚2, 吴凯杰2, 侯云鸽2, 吴珂2, *   

  1. (1. 杭州运河集团建设管理有限公司, 浙江杭州 310058; 2. 浙江大学建筑工程学院, 浙江杭州 310058; 3. 浙江大学海洋学院, 浙江舟山 316021)
  • 收稿日期:2019-02-27 修回日期:2019-05-13 出版日期:2019-08-30 发布日期:2019-09-12
  • 作者简介:戴妙娴(1986—),女,浙江金华人,2011年毕业于浙江工业大学,土木工程专业,硕士,工程师,现从事工程前期设计与管理工作。Email: 21712093@zju.edu.cn。*通信作者: 吴珂, Email: wuke@zju.edu.cn。
  • 基金资助:

    浙江省自然科学基金(LY19E080028); 浙江省重点研发项目(2018C03029); 中央高校基本科研业务费专项资金项目(2017QNA4023)

Jet Flow Ventilation Characteristics and Air Flow Scheme for Underground Traffic Turning Platform

DAI Miaoxian1, ZHANG Tianhang2, YIN Mingjian2, 3, LUO Chunhou2, WU Kaijie2, HOU Yunge2, WU Ke2, *   

  1. (1. Hangzhou Yunhe Group Construction Management Company, Hangzhou 310058, Zhejiang, China;  2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, Zhejiang, China; 3. Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang, China)
  • Received:2019-02-27 Revised:2019-05-13 Online:2019-08-30 Published:2019-09-12

摘要:

为探究地下交通转换平台内通风系统的合理布局,采用比尺模型试验和CFD模拟相结合的方法,研究射流风机和通风组织对地下交通转换平台内气流运动的影响。结果表明: 1)当联络通道内风机射流朝向敞开段时,为使风机升压系数Kj最大,630 mm、900 mm、1 120 mm射流风机的布设位置应距离敞开段分别大于40、50、65 m; 2)大口径射流风机具有更大的Kj,但占用的断面空间更大,且射流诱导段更长,应根据联络通道长度和高度合理选择射流风机口径; 3)地下交通转换平台的通风组织不宜采用同侧开启方式,采用对角抽吸方式时,联络通道内的污染物混入比最低、通风效率最高。

关键词: 地下交通转换平台, 比尺模型试验, CFD, 通风, 射流, 流场分析

Abstract:

The rational layout of the ventilation system in underground traffic turning platform (UTTP) is very important. Hence, scaled model tests and computational fluid dynamics (CFD) simulation are carried out to reveal the influences of jet fans and ventilation strategies on the air flow in the UTTP. The results indicate that: (1) When the direction of the fan jet is towards the opening section, the distances from the 630 mm, 900 mm and 1 120 mm jet fans to the opening section are supposed to be greater than 40 m, 50 m and 65 m respectively to ensure the pressureboosting coefficient Kj can reach the maximum value. (2) Jet fans with large diameters have a greater Kj, but they usually occupy larger crosssection space and longer jet inducing length; thus, the selection of jet fan diameters should be carefully considered according to the length and height of the linking tunnel. (3) The ventilation strategy of open jet fans in the same side should not be applied to UTTP; instead, diagonal pumping is the most suitable way, which would reduce the pollutant air mixture ratio to the lowest and increase the ventilation efficiency to the highest.

Key words: underground traffic turning platform (UTTP), scaled model test, computational fluid dynamics (CFD), ventilation, jet flow, flow field analysis

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