The ventilation and climate modelling of rapid development tunnel drivages
The ventilation and climate modelling of rapid development tunnel drivages
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DOI：
10.1016/j.tust.2003.09.003
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发表时间：
2004-03-01
影响因子：
6.9
通讯作者：
Yang, ZY
中科院分区：
文献类型：
--
作者：
Lowndes, IS;Crossley, AJ;Yang, ZY
更深入地开采矿物和煤炭，采用更高功率的机械来提高生产水平，增加了通风系统的负担，以维持可接受的工作环境。这些作业区的气候恶化也可能对劳动力的健康和安全产生不利影响。在英国，目前正在超过 1000 米的深度进行矿物开采。此外，连续采矿机和隧道锚杆支护方法的采用提高了开发速度，但代价是增加了灰尘、气体、热量和湿度的排放。人们认识到需要提高辅助通风系统的设计和运行效率，以维持适当的地下环境和气候。所提供通风的质量、数量和控制方面取得的任何改进都将有助于提供改进的气体和灰尘稀释以及气候控制。由于采矿方法所施加的限制，仅使用通风空气所实现的气候改善可能存在经济或实际限制。如果确定了这一限制，则可能需要考虑选择性应用空气冷却系统。该论文详细介绍了诺丁汉大学开发的基于计算机的气候预测工具的构建。这项工作建立在早期研究的基础上（Ross 等人，1997 年，第六届国际矿井通风大会论文集，SME，科罗拉多州利特尔顿，第 283-288 页），该研究开发了短隧道开发的原型模型。当前模型预测了长期快速开发的单入口隧道掘进中的湿度和热力学条件。该模型考虑了地层、水、机械和通风空气之间的质量和热量传递。该模型产生的结果与通风、气候和操作数据相关，这些数据是从英国深部煤矿内的许多快速隧道开发中获得的。本文详细介绍了针对英国 Maltby 煤矿 105 区尾门隧道开发中测量的通风和气候调查数据进行的一系列相关性和验证研究的结果。本文最后介绍了一个案例研究的结果，该案例说明了经过验证的模型在集成矿井通风和冷却系统的设计和运行中的应用。该案例研究说明了在快速隧道开发过程中，深度增加以及原始地层温度升高对气候的影响。我们进行了进一步的研究，以确定应采取的最佳冷却策略，以维持车道前端令人满意的气候。 (C) 2003 Elsevier Ltd. 保留所有权利。
The extraction of minerals and coal at greater depth, employing higher-powered machinery to increase production levels has imposed an increased burden on ventilation systems to maintain an acceptable working environment. A deterioration in the climate experienced within these workings may also adversely affect the health and safety of the workforce. In the UK, mineral extraction is now being practiced at depths of over 1000 m. In addition, the adoption of continuous miner and tunnel bolting support methods has permitted improved development rates to be achieved at the cost of increased emissions of dust, gas and heat and humidity. There is a recognized need to improve the efficiency in the design and operation of auxiliary ventilation systems to maintain an adequate underground environment and climate. Any improvement achieved in the quality, quantity and control of the delivered ventilation will assist in the provision of improved gas and dust dilution and climatic control. Due to the constraints imposed by the mining method, there may be an economic or practical limit to the climatic improvement that may be obtained by the sole use of ventilation air. Where this limit is identified, there may be the need to consider the selective application of air-cooling systems. The paper details the construction of a computer based climatic prediction tool developed at the University of Nottingham. This work builds upon earlier research (Ross et al., 1997, Proceedings of 6th International Mine Ventilation Congress, SME, Littleton, CO, pp. 283-288) that developed a prototype model for short tunnel developments. The current model predicts the psychrometric and thermodynamic conditions within long rapid development single entry tunnel drivages. The model takes into account the mass and heat transfer between the strata, water, machinery and the ventilation air. The results produced by the model have been correlated against ventilation, climatic and operational data, obtained from a number of rapid tunnel developments within UK deep coalmines. The paper details the results of a series of correlation and validation studies conducted against the ventilation and climate survey data measured within 105s district Tail Gate tunnel development at Maltby Colliery, UK. The paper concludes by presenting the results of a case study that illustrate the application of the validated model to the design and operation of an integrated mine ventilation and cooling system. The case study illustrates the effect that an increased depth and hence increased virgin strata temperature has on the climate experienced within rapid tunnel developments. Further investigations were performed to identify the optimum cooling strategy that should be adopted to maintain a satisfactory climate at the head of the drivage. (C) 2003 Elsevier Ltd. All rights reserved.