Research on transient temperature field of surrounding rock in thermal insulation roadways of high-temperature mines

doi:10.16265/j.cnki.issn1003-3033.2026.01.0557

Abstract

Abstract:

In order to explore the influence of laying foam slurry insulation layer on the temperature field of surrounding rock in high temperature mines, the heat transfer differential equation of unsteady surrounding rock and the two-dimensional unsteady heat transfer differential equation of foam slurry insulation layer were established by using Fourier 's law. The finite difference method was used to solve the differential equations, so as to explore the temperature change of surrounding rock after laying the foam slurry insulation layer and the influence of initial temperature on foam slurry insulation layer. The results show that the temperature tends to be stable with time due to the small thermal conductivity of the foam slurry insulation layer. The temperature difference between the rock strata adjacent to the foam slurry insulation layer is large, and the larger the thickness of the foam slurry insulation layer, the higher the temperature of the rock mass. It can be seen that the laying of the foam slurry insulation layer hinders the transfer of a certain amount of heat to the roadway so that the temperature gradient of the rock mass increases. When the initial temperature of the foam slurry insulation layer is closer to the air flow temperature, the temperature gradient inside the foam slurry is smaller and the temperature can reach a steady state in a short time.

Key words: high-temperature mine, surrounding rock, thermal insulation roadways, transient state, temperature field, foam slurry

CLC Number:

X936

YOU Bo, WANG Siqi, GAO Ke, TANG Mingyun, HAN Qiaoyun, SONG Yuchen. Research on transient temperature field of surrounding rock in thermal insulation roadways of high-temperature mines[J]. China Safety Science Journal, 2026, 36(1): 81-87.

Figures/Tables 6

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参数值	ρ/ (kg·m^-3)	c/ (J·kg^-1·K^-1)	λ_i/ (W·m^-1·K^-1)
泡沫混凝土	602	1 000	0.121 5
原岩	2 330	880	2.64

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