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Monitoring systems for coal mines utilizing booster fans.

机译：利用增压风扇的煤矿监控系统。

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摘要

A booster fan is an underground ventilation device installed in series with a main surface fan and is used to boost the pressure of air of the current passing through it. Currently, federal regulations in the U.S. do not permit the use of booster fans in underground bituminous and lignite coal mines. Considering that a booster fan is an active device with moving parts, it is imperative to install it with an efficient and reliable monitoring and control system. The important aspects of booster fans and monitoring systems that are discussed in this thesis are environmental monitoring, condition monitoring, design and installation principles, guidelines for safe operation of booster fans, fan interlocking, and risk assessment.;The environmental status of underground mining operations with large booster fans is critical to the health and safety of the miners. Mining operations, especially in large deep coal mines, rely greatly upon the monitoring systems to create safe and healthy work conditions by monitoring carbon monoxide, methane, carbon dioxide, oxygen, nitrogen oxides, and smoke.;Condition monitoring is the process of measuring the fan operating factors to evaluate and predict the health of mining machinery. In coal mine ventilation, condition monitoring includes the measurement and evaluation of the following factors: vibration, barometric pressure, noise, input power, motor and bearing temperatures, differential pressures, and air flow rate.;The monitoring system network in a mine could become extremely complex if the monitors are not located at the right place. Recommendations are given for calculating the appropriate siting and spacing of monitors.;Booster fans are assembled and installed to operate under harsh conditions; they are subject to wear and tear and malfunction. Installation principles are discussed in detail and recommendations are made for the safe operation of booster fans. Interlocking is one method of preventing the occurrence of unsafe conditions due to electrical or mechanical failures. It is described in detail, and the best practices used in other coal mining countries are summarized. To ensure the safe operation of booster fans and monitoring systems underground, a risk assessment was done, critical hazards were identified, and mitigation controls are outlined.
机译：升压风扇是与主表面风扇串联安装的地下通风设备，用于增强流过该风扇的电流的空气压力。目前，美国联邦法规不允许在地下沥青和褐煤煤矿中使用增压风机。考虑到增压风扇是带有活动部件的有源设备，因此必须为其安装高效且可靠的监视和控制系统。本文讨论的增压风机和监测系统的重要方面是环境监测，状态监测，设计和安装原理，增压风机安全操作准则，风机联锁以及风险评估。配备大型增压风扇对于矿工的健康和安全至关重要。采矿作业，特别是在大型深层煤矿中，特别依赖于监视系统来通过监视一氧化碳，甲烷，二氧化碳，氧气，氮氧化物和烟雾来创建安全健康的工作条件;条件监视是测量过程的过程。风扇操作因素以评估和预测采矿机械的健康状况。在煤矿通风中，状态监测包括对以下因素的测量和评估：振动，大气压，噪声，输入功率，电机和轴承温度，压差和空气流量;矿井中的监测系统网络可能成为如果显示器放置在不正确的地方，则极其复杂。为计算显示器的合适位置和间距给出了建议。它们会遭受磨损和故障。详细讨论了安装原理，并提出了安全操作增压风扇的建议。联锁是一种防止由于电气或机械故障而导致不安全状况发生的方法。详细介绍了该方法，并总结了其他煤矿国家所采用的最佳实践。为了确保增压风扇和地下监控系统的安全运行，进行了风险评估，确定了严重危害并概述了缓解措施。

著录项

  • 作者

    Gangrade, Vasu.;

  • 作者单位

    The University of Utah.;

  • 授予单位 The University of Utah.;
  • 学科 Engineering Mining.
  • 学位 M.S.
  • 年度 2014
  • 页码 154 p.
  • 总页数 154
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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