基于污染物体积分数判识的长大隧道竖井位置优化研究

山东大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (3): 87-92.

基于污染物体积分数判识的长大隧道竖井位置优化研究

徐庆辉¹,孙克国^2*,朱峰²,许洪伟²

1. 青岛市地下铁道公司, 山东青岛 266071; 2. 西南交通大学土木学院地下工程系, 四川成都 610031

收稿日期:2011-11-06 出版日期:2012-06-20 发布日期:2011-11-06
通讯作者: 孙克国(1981- ),男,山东青岛人,博士,主要研究方向为隧道灾害预报与防治. E-mail:sunkeg@126.com E-mail:sunkeg@126.com
作者简介:徐庆辉(1979- ),男,安徽黄山人,工程师,主要研究方向为地下工程通风防灾监测. E-mail:4769501@qq.com
基金资助:
国家自然科学基金资助项目(51108387,51038009)

Shaft location optimization in a long tunnel based on the analysis of pollutants volume fraction

XU Qing-hui¹, SUN Ke-guo^2*, ZHU Feng², XU Hong-wei²

1. Qingdao Metro Co.Ltd., Qingdao 266071, China;
2. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China

Received:2011-11-06 Online:2012-06-20 Published:2011-11-06

摘要/Abstract

摘要：

采用竖(斜)井纵向分段式通风的长大山岭隧道由于涉及隧道特点、交通状况、气象特征、环境要求等多种因素,对通风井与隧道相对位置如何确定目前还没有定论。基于计算流体动力学和污染物体积分数判识标准,以FLOW-3D为分析工具,参考隧道可行性报告中远景交通量预测的相关数据,对隧道建立了可以综合考虑交通污染、隧道内环境、井外影响等多种因素的通风井位置优化方法。首先以计算流体动力学的相关假设为前提,对气流在隧道与竖井中的运移进行动力学分析,然后采用高次多项式的数据拟合法根据分析结果对规范中未确定的竖井设定位置进行量化。采用此优化方法对某隧道宜布置竖井的大致范围(1km长)的距离上进行分析,研究得出竖井的最优位置是距气流进口端519m,即竖井距进出口的距离比为1.079的结论。最后通过总结前人关于采用竖井纵向分段式通风的隧道设计实例,对此方法计算结果的合理性和可靠性进行了验证。

关键词: 污染物体积分数;隧道通风;竖井位置优化, FLOW-3D

Abstract:

In a long mountain tunnel, the method of segmented longitudinal ventilation by shafts is more often used, which is concerned with many aspects, such as tunnel features, traffic condition, weather characteristic and environment request, but there is no conclusion for the relation position of the shaft and tunnel in the academia. Based on the discrimination standards of pollutant volume fraction and the computational fluid dynamics method, the optimization method of shaft location was studied by FLOW-3D as the analysis tool and referring the prediction data of prospect traffic from the tunnel feasibility report, which could consider the traffic pollution and environment in the tunnel and influencing factors out the shaft. First, under the related assumption of computational fluid dynamics, the dynamic analysis of air transferred in the tunnel and shaft was given. Then the shaft location optimization was obtained by the data fitting method and the high order polynomial. The optimization method was used to study an exact tunnel, in which the suitable distance was 1km for the shaft. The conclusion showed that the best location of the shaft was 519 m from the air inlet and the distance between the inlet and outlet was 1.079. Finally the rationality and reliability of this optimization method was verified by an example for studying the segmented longitudinal ventilation by shafts in other research.

Key words: pollutants volume fraction, tunnel ventilation, optimization location of vertical shaft, FLOW-3D

徐庆辉1,孙克国2*,朱峰2,许洪伟2. 基于污染物体积分数判识的长大隧道竖井位置优化研究[J]. 山东大学学报(工学版), 2012, 42(3): 87-92.

XU Qing-hui1, SUN Ke-guo2*, ZHU Feng2, XU Hong-wei2. Shaft location optimization in a long tunnel based on the analysis of pollutants volume fraction[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2012, 42(3): 87-92.

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