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| 1 | Optimized model-based control of main mine ventilation air flows with minimized energy consumption显示文摘In early 2018,the Boliden Garpenberg operation implemented an optimized control strategy as an addition to the existing ventilation on demand system.The purpose of the strategy is to further minimize energy use for main and booster fans,whilst also fulfilling airflow setpoints without violating constraints such as min/max differential pressure over fans and interaction of air between areas in mines.Using air flow measurements and a dynamical model of the ventilation system,a mine-wide coordination control of fans can be carried out.The numerical model is data driven and derived from historical operational data or step changes experiments.This makes both initial deployment and lifetime model maintenance,as the mine evolves,a comparably easy operation.The control has been proven to operate in a stable manner over long periods without having to re-calibrate the model.Results prove a 40%decrease in energy use for the fans involved and a greater controllability of air flow.Moreover,a 15%decrease of the total air flow into the mine will give additional proportional heating savings during winter periods.All in all,the multivariable controller shows a correlation between production in the mine and the ventilation system performance superior to all of its predecessors. | S.Sjostrom E.Klintenas P.Johansson J.Nyqvist | 2020 | International Journal of Mining Science and Technology2020，30，4： | 4 |
| 2 | Influence of gas ventilation pressure on the stability of airways airflow显示文摘Coal mine ventilation is an extremely complicated system that can be affected by many factors. Gas ventilation pressure is one of important factors that can disturb the stabilization of airflow in airways.The formation and characteristics of gas ventilation pressure were further elaborated, and numerical simulations were conducted to verify the role of gas ventilation pressure in the stability of airway airflow.Then a case study of airflow stagnation accident that occurred in the Tangshan Coal Mine was performed.The results show that under the condition of upward ventilation, the direction of gas ventilation pressure in the branch is the same to that of the main fan, airflow of the branches beside the branch may be reversed. The greater the gas ventilation pressure is, the more obvious the reversion is. Moreover, reversion sequence of paralleled branches is related to the airflow velocity and length of the branch. Under the condition of downward ventilation, the airflow in the branch filled with gas may be reversed. Methane in downward ventilation is hard to discharge; therefore, accumulation in downward ventilation is more harmful than that in upward ventilation. | Zhou Aitao Wang Kai Wu Longgang Xiao Yiwen | 2018 | International Journal of Mining Science and Technology2018，28，2： | 2 |
| 3 | 风电机组机舱环境过滤系统研究显示文摘为了提高风机机舱过滤装置的过滤效果,利用温控原理,设计了1种新型风机机舱环境过滤系统。通过对比4种常用的过滤网材料的优缺点,确定了聚丙烯纤维材料为最佳选择,并详细阐述了该系统的控制原理。最后,将该系统应用于吉林大安风电场中,结果表明:该系统使风机机舱环境得到了改善,极大地减轻了运维人员的工作量。 | 吴佳阔 高阳 钟宏宇 孙铭悦 刘凡 马超 毛志 | 2019 | 沈阳工程学院学报(自然科学版)2019，15，1： | 1 |
| 4 | Evaluating the impact of auxiliary fan practices on localised subsurface ventilation显示文摘Mines are continually expanding in size and depth,leading to an increased reliance on localised subsurface ventilation systems.The use of underground auxiliary fans is a favoured method to increase and control airflow in working areas.However,the effectiveness of auxiliary fans in this regard is not clear.This paper evaluated the performance of these underground fan systems in four different South African deeplevel gold mines.A total auxiliary fan system efficiency of 5%was found across six systems,with the average fan efficiency of 33 fans at 38%.The results showed that these fans deviate significantly from their design operating points.Therefore,there are significant shortcomings in current underground fan practices.Our detailed investigations led to the conclusion that the assemblage of underground auxiliary fan systems results in significant energy inefficiencies.Therefore,maintaining good underground fan practice such as optimal fan selection,ducting design and maintenance is crucial for the efficacy of a mine ventilation network. | David J.de Villiers Marc J.Mathews Philip Maré Marius Kleingeld Deon Arndt | 2019 | International Journal of Mining Science and Technology2019，29，6： | 1 |
| 5 | 特大型铁矿主辅联合式通风系统优化研究显示文摘完善的矿井通风系统是有效预防非煤矿井中毒窒息事故发生的关键。以某特大型铁矿主辅联合式通风系统为研究对象,测试并分析采矿方法、作业中段数量等改变后对矿井通风效果的影响,应用矿井通风三维仿真系统软件从通风网络、通风动力、通风构筑物等方面优化矿井通风系统,并开展现场应用研究。结果表明:矿井总进风量增加约92 m^(3)/s,满足了生产规模为500万t/a的风量需求(670.0 m^(3)/s);东、西回风井的风量分配由1∶1.84优化到1∶1.35,趋于均衡,实现了双中段多分层同时作业的风流有序流动、主斜坡道风流稳定流动。这对及时排除作业过程中产生的污浊空气具有重要应用意义。 | 邱熠华 | 2023 | 铜业工程2023，，5： | 0 |
| 6 | 主矿井通风风流能量消耗最小化控制研究显示文摘为了实现矿井通风稳定可靠并减少能耗,提出一种对矿井通风分流能量控制研究的方法,即利用风量测量和通风系统的动力学模型,可以实现全矿通风机协调控制。实验证明,运用该方法,通风控制系统可以以稳定长期运行,而不必重新校准模型。所涉及的风扇的能耗降低了40%,且气流的可控性更强。 | 王志鹏 | 2021 | 机械管理开发2021，36，9： | 0 |
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