- CSCD核心中文核心科技核心
- RCCSE(A+)公路运输高质量期刊T1
- Ei CompendexScopusWJCI
- EBSCOPж(AJ)JST
收稿日期: 2019-02-27
修回日期: 2019-05-13
网络出版日期: 2019-09-12
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
Received date: 2019-02-27
Revised date: 2019-05-13
Online published: 2019-09-12
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Kj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Kj，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。
戴妙娴 , 张天航 , 殷铭简 , 罗淳厚 , 吴凯杰 , 侯云鸽 , 吴珂 . 地下交通转换平台射流通风特性及风流组织方式研究[J]. 隧道建设, 2019 , 39(S1) : 139 -145 . DOI: 10.3973/j.issn.2096-4498.2019.S1.020
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 pressureboosting coefficient Kj can reach the maximum value. (2) Jet fans with large diameters have a greater Kj, but they usually occupy larger crosssection 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.
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