Abstract.With the continuous exploitation of coal resources, close-distance coal seam mining has gradually become a crucial aspect in coal mine production. During close-distance coal seam mining, due to the small spacing between the upper and lower coal seams, the residual coal pillars and goaf areas left after the mining of the upper coal seam have a significant impact on the layout and stability of the roadways for mining the lower coal seam. Taking the 4203 working face of a certain coal mine as an example, this paper focuses on the optimization of roadway location in close-distance coal seam … Read more →

Abstract.In the paper, the influence factors of conversion efficiency are analyzed. Firstly, the thermoelectric unit is simulated in three dimensions, the temperature field and potential field are analyzed, and the influence factors of thermoelectric efficiency are considered. The output power of the thermoelectric unit is basically consistent with the increasing temperature difference, and the greater the temperature difference is, the greater the output power changes; With the increase of solar irradiance, the temperature at hot end increases rapidly; The cold end temperature increases slowly; Due to … Read more →

Abstract.The combination of virtual reality technology and emotion computing brings new research directions in the field of human-computer interaction. This paper proposes a virtual reality interaction system based on multimodal emotion recognition, innovatively designs an emotion-driven adaptive interaction mechanism, and realises the dynamic mapping between emotional states and virtual environment parameters. The research constructs a virtual training system for people with social disorders, and it is experimentally verified that the programme can effectively enhance users' social skills and improve … Read more →

Abstract.In response to the characteristics of high gas content and low permeability coal seams in Coal Mine, a systematic study was conducted to improve the underground coal seam gas drainage effect using surface fracturing drilling technology. The focus was on examining the impact of surface fracturing drilling on various indicators before and after fracturing of the underground coal seam, including permeability, gas pressure and content, gas drainage concentration, drainage volume and pure volume, gas emission rate, and the K1 value. A quantitative analysis was carried out to investigate the … Read more →

Abstract.Amid urgent climate goals, the building sector’s high energy use demands smarter design and operation strategies. This paper critically explores recent peer-reviewed literature on AI-enhanced Building Information Modeling (BIM) systems for real-time energy performance simulation, highlighting how artificial intelligence (AI) techniques are integrated with BIM to improve building energy efficiency, reviewing global studies that combine BIM-based energy modeling with machine learning, optimization algorithms and digital twin frameworks. Key findings indicate that AI can dramatically accelerate … Read more →

Abstract.In order to improve the safety and reliability of the ventilation system, the ventilation resistance monitoring and situation analysis methods of the ventilation path are used to diagnose the changes in mine ventilation resistance in real time and determine whether the ventilation system is healthy. Calculate the mine safety monitoring path through the critical path determination algorithm, and install multi parameter sensors (wind pressure, wind speed, temperature, humidity) in the critical path roadway. Real time calculation of mine resistance based on the barometer base point method and … Read more →

Abstract.In order to thoroughly explore the variation law of negative pressure along the length of in-seam boreholes, a negative pressure distribution formula within in-seam boreholes was derived through coupling a gas flow model in the coal mass surrounding the borehole and a gas flow model inside the borehole. Field tests were conducted to measure the negative pressure values at different depths within the boreholes, thereby obtaining the negative pressure distribution law and verifying the feasibility of the theoretical model. By applying the negative pressure distribution law, a novel gas … Read more →