Analysis of Thermal Environment and Its Influencing Factors in Deep Stope of Metal Mine

Abstract

In order to scientifically evaluate the thermal environment of the deep stope and its influencing factors, research was conducted on the thermal environment in Sanshandao Gold Mine, the theoretical calculations and structural analysis of heat release from 8 types of heat sources in the three sub-levels of -930 m, -945 m, and -960 m were carried out, and quantitative characterization was made on the influential degree of comprehensive heat release on the thermal environment, and it was clear that the heat release from the surrounding rock and mechanical and electrical equipment were the main parts at the deep mining site and the proportion of heat release from other heat sources is basically stable. Then, through the analysis of the influence factors of heat sources in the mining site, 17 evaluation indexes of the influence factors of the mining site thermal environment were sorted out, and the indexes’ weight was calculated based on the entropy weighting method, and it was learned that the largest weight of the influence on the thermal environment factors in a single excavation working face was the water gushing in the roadway. The TOPSIS method was used to comprehensively analyze and rank the thermal damage degree in the three middle sections. The results show that the degree of thermal damage in the -960 m is more severe than that in the -930 m and -945 m. This will provide some basic basis for the evaluation and prevention of thermal damage in deep mining projects, and is of great significance for improving mine production efficiency.

Ecological Characteristics and Occupational Health Effects of Deep Mines in China: A Review

“…As the depth of underground mining increases, the factors affecting the temperature change of the thermal environment in deep wells [35] can be categorized into two main groups according to the mode of heat transfer. One is relative heat sources, such as surrounding rock and groundwater.…”

Technologies for Heat Hazard Governance and Thermal Energy Recovery in Deep Mines

“…The blasting heat release is common in metal mines as the blasting mining method is often used. The heat generated by the explosion is released instantaneously and plays a leading role in the short-term increase in the stope air temperature [17,18].…”

CFD Analysis of the Forced Airflow and Temperature Distribution in the Air-Conditioned Operator’s Cabin of the Stationary Rock Breaker in Underground Mine under Increasing Heat Flux

“…The exploitation of deposits located deep underground, which is increasing its share in the global mining industry, due to the exploitation of shallower deposits, is inextricably linked to the occurrence of climatic threats. This problem affects the mining of various mineral resources at different depths globally; for example, metal ores or coal mines in China [21][22][23], India [24], South Africa [25], and Poland [26,27], driving scientists to look for new solutions to combat this threat. A method for achieving this goal may be thermal insulation, the application of which was studied in [28,29].…”