轨道交通单竖井隧道环境的空气湍流折射率结构常数模型及分析

doi:10.11999/JEIT160632

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Abstract

The change of the atmospheric turbulence affects the transmission of microwave. In order to study the impact of turbulence on the microwave transmission in rail transit tunnel environment, this paper combines the motion characteristics of the piston wind with the calculation method of atmospheric refractive index structure parameter. With investigation into the influences of tunnel environmental temperature, length of tunnel, blockage ratio, and piston wind speed on the atmospheric refractive index structure parameter, an atmospheric refractive index structure parameter model is established in the single-shaft rail transit tunnel environment. In this paper, the distribution of the atmospheric refractive index structure constant in rail transit tunnel environment is analyzed, and the change of atmospheric turbulence refractive index structure parameter in case of the train through the single-shaft tunnel with that of no single-shaft tunnel is compared based on the actual tunnel temperature scene. The model provides a theoretical reference for the study of radio refractive index structure constant in rail transit tunnel environment.

Key words： Atmospheric turbulence Microwave Refractive index structure constant Single-shaft tunnel Piston wind

Received: 15 June 2016 Published: 24 February 2017

PACS:

U231.7

Fund:

The National Natural Science Foundation of China (61271061, 61132003)

Corresponding Authors: ZHAO Hengkai E-mail: hkzhao@staff.shu.edu.cn

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	ZHAO Hengkai
	FU Xintao

Cite this article:

ZHAO Hengkai,FU Xintao. Model and Analysis of Atmospheric Turbulence Index Structure Parameter in the Single-shaft Tunnel of Rail Transit Environment[J]. JEIT, 2017, 39(4): 887-892.

URL:

http://jeit.ie.ac.cn/EN/10.11999/JEIT160632 OR http://jeit.ie.ac.cn/EN/Y2017/V39/I4/887

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