期刊论文

中文

安全与环境学报

1009-6094

2012

12

1

191-195

10.3969/j.issn.1009-6094.2012.01.043

浙江省交通运输厅科技计划项目（2010H01） 灭火救援技术公安部重点实验室开放课题（KF2011003） 中南大学中央高校基本科研业务费专项资金项目（2011QNZT109）

本校为其他机构

利用经典羽流模型计算烟气生成量来设计隧道集中排烟系统的排烟量存在设计量偏小的问题。从火灾烟气控制效果出发,选取排烟效率、烟气蔓延范围、烟气流动速度、人员疏散微环境4个指标,提出一套隧道集中排烟系统的评价指标,构建基于多指标约束的隧道集中排烟量设计模型。通过FDS 5.0对某越江隧道火灾时的各评价指标参数值进行模拟计算,得到该隧道集中排烟系统在20MW火灾时的最适排烟量为140～150 m3/s。研究表明,利用多指标约束的排烟量设计模型可提高隧道集中系统排烟量设计的准确性。

The given paper is to introduce its development of a newly renovated smoke-extracting rate model for the tunnel-purpose based on the multi-index constraints.Since it has a lot of limiting factors for fire-smoke control,a lot of calculation has to be done to optimize the design in the engineering practice.Traditionally,the problem can be solved by using the classical plume-extraction method.However,since the smoke exhaust rate worked out by using the classical method is rather limited,we prefer to propose a set of suitable evaluation index for the contracted smoke extraction system,which may in...