• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mathematical Problems in Engineering >Distribution Law and Prediction Model of Dust Concentration under Airflow Adjustment in Fully Mechanized Heading Face
【24h】

Distribution Law and Prediction Model of Dust Concentration under Airflow Adjustment in Fully Mechanized Heading Face

机译：全机械化标题面气流调节下粉尘浓度的分布法与预测模型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The current situation of extensive ventilation management for the fully mechanized heading face cannot dynamically control air velocity and make reasonable dust migration distribution, resulting in serious disaster of dust and environmental pollution in the roadway. In this paper, the fluid mechanics, finite element numerical simulation, and underground measurement were combined to analyze the distribution of dust concentration under the variable airflow state at the duct outlet to obtain the massive correlation data of duct outlet parameters and dust concentration. For the pedestrian breathing-height in the backflow side and driver location, the double-objective BP prediction model for dust concentration under airflow adjustment was established, and the performance parameters and prediction accuracy of the BP prediction model were analyzed by using the relative error and fitting analysis. In Ningtiaota coal mine, located in Northern Shaanxi province of China, the self-developed control device is installed on the duct outlet with underground test and application verification to refine the model. The results indicated the dynamic control of airflow optimizes dust concentration distribution. The dust concentration at the pedestrian breathing-height in the backflow side and driver location was significantly decreased after the installation of adjustment device. Dust concentration at the pedestrian breathing-height and driver location was decreased by 31% and 34%, respectively, compared with the results before adjustment, which achieved the safe, environment-friendly, and energy-saving ventilation and the dust removal function in fully mechanized heading face.
机译：综合机械化标题面广泛通风管理的现状不能动态控制风速，并制作合理的尘埃迁移分布，从而严重的灰尘灾害和道路环境污染。在本文中，组合了流体力学，有限元数值模拟和地下测量，分析了管道出口下可变气流状态下的粉尘浓度分布，得到了管道出口参数和灰尘浓度的大规模相关数据。对于回流侧和驱动器位置的行人呼吸高度，建立了气流调整下的灰尘浓度的双目标BP预测模型，通过使用相对误差来分析BP预测模型的性能参数和预测精度拟合分析。在宁蒂亚煤矿位于中国陕北煤矿，自开发的控制装置安装在管道出口，地下试验和应用验证以改进模型。结果表明，气流的动态控制优化了粉尘浓度分布。在安装调节装置后，回流侧和驾驶员位置的行人呼吸高度的灰尘浓度显着降低。与调整前的结果相比，行人呼吸高度和驾驶员位置的灰尘浓度分别下降了31％和34％，这取得了安全，环保，节能通风和全面的排放功能机械化标题面。

著录项

  • 来源
    《Mathematical Problems in Engineering》 |2019年第16期|6210704.1-6210704.17|共17页
  • 作者

    Gong Xiaoyan; Jia Congcong; Sun Kang; Cui Jian; Lei Kefan; Xue Yuxuan; Xue He;

  • 作者单位

    Xian Univ Sci & Technol Xian 710054 Shaanxi Peoples R China;

    Xian Univ Sci & Technol Xian 710054 Shaanxi Peoples R China;

    Xian Univ Sci & Technol Xian 710054 Shaanxi Peoples R China;

    Xian Univ Sci & Technol Xian 710054 Shaanxi Peoples R China;

    Xian Univ Sci & Technol Xian 710054 Shaanxi Peoples R China;

    Univ Hong Kong Pokfulam Hong Kong 999077 Peoples R China;

    Xian Univ Sci & Technol Xian 710054 Shaanxi Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号