Diesel particulate matter (DPM) is considered to be carcinogenic after prolonged exposure. With more diesel-powered equipment used in underground mines, miners' exposure to DPM has become an increasing concern. This paper used computational fluid dynamics method to study the DPM dispersion in a dead-end entry with loading operation. The effects of different push-pull ventilation systems on DPM distribution were evaluated to improve the working conditions for underground miners. The four push-pull systems considered include: long push and short pull tubing; short push and long pull tubing, long push and curved pull tubing, and short push and curved pull tubing. A species transport model with buoyancy effect was used to examine the DPM dispersion pattern with unsteady state analysis. During the 200 s of loading operation, high DPM levels were identified in the face and dead-end entry regions. This study can be used for mining engineer as guidance to design and setup local ventilation, select DPM control strategies and for DPM annual training for underground miners.

中文翻译：

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推挽系统的设计，用于控制死胡同入口内的柴油特殊物质。

长时间暴露后，柴油颗粒物（DPM）被认为具有致癌性。随着地下矿井中使用更多的柴油动力设备，矿工暴露于DPM的问题日益引起人们的关注。本文使用计算流体动力学方法研究了带加载操作的无端入口中的DPM色散。评估了不同推拉通风系统对DPM分布的影响，以改善地下矿工的工作条件。所考虑的四个推拉系统包括：长推管和短推管；短推和长拉管，长推和弯曲拉管以及短推和弯曲拉管。具有浮力作用的物种迁移模型用于通过非稳态分析来检验DPM分散模式。在200秒的加载过程中，在人脸和死胡同进入区域发现了高DPM水平。该研究可为采矿工程师提供指导，以设计和设置局部通风，选择DPM控制策略以及为地下矿工提供DPM年度培训。