an experimental investigation of transient heat transfer in surrounding rock mass of high geothermal roadway
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ID: 199410
2016
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Abstract
A self-designed experimental installation for transient heat transfer in the
modelling surrounding rock mass of high geothermal roadways was elaborated in
this paper. By utilizing the new installation, the temperature variation
rules in surrounding rock mass of the high geothermal roadway during
mechanical ventilation were studied. The results show that the roadway wall
temperature decreases dramatically at the early stage of ventilation, and the
temperature at every position of the surrounding rock mass is decreasing
constantly with time passing by. From roadway wall to deep area, the
temperature gradually increases until reaching original rock temperature. The
relationship between dimensionless temperature and dimensionless radius
demonstrates approximately exponential function. Meanwhile, the temperature
disturbance range in the simulated surrounding rock mass extends gradually
from the roadway wall to deep area in the surrounding rock mass. Besides, as
the air velocity increases, heat loss in the surrounding rock mass rises and
the ratio of temperature reduction becomes larger, the speed of disturbance
range expansion also gets faster.
| Reference Key |
yuan2016thermalan
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|---|---|
| Authors | ;Zhang Yuan;Wan Zhijun;Gu Bin;Zhou Changbing |
| Journal | Nature |
| Year | 2016 |
| DOI |
10.2298/TSCI151017053Z
|
| URL | |
| Keywords | Keywords not found |
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