Unsteady temperature field of surrounding rock mass in high geothermal roadway during mechanical ventilation

来源期刊:中南大学学报(英文版)2017年第2期

论文作者:张源 万志军 顾斌 周长冰 程敬义

文章页码:374 - 381

Key words:high geothermal mine; heat hazard; unsteady temperature field; evolution law; mechanical ventilation

Abstract: To explore the spatial-temporal evolution law of rock mass temperature in high geothermal roadway during mechanical ventilation, a series of experiments were conducted based on the physical simulation test system of thermal and humid environment in high geothermal roadway, which is a method independently developed by China University of Mining and Technology. The results indicate that during ventilation, the disturbed region of the temperature extends gradually from shallow area to deep area in the surrounding rock mass of the roadway. Meanwhile, the temperature increases as the exponential function from shallow area to deep, with steady decrease of the temperature gradient and heat flux. As the ventilation proceeds, the relationship between dimensionless temperature and dimensionless time approximately meets Hill function.

Cite this article as: ZHANG Yuan, WAN Zhi-jun, GU Bin, ZHOU Chang-bing, CHENG Jing-yi. Unsteady temperature field of surrounding rock mass in high geothermal roadway during mechanical ventilation [J]. Journal of Central South University, 2017, 24(2): 374-381. DOI: 10.1007/s11171-017-3439-y.

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