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首页> 外文会议>The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)论文集 >Study on Dust Density Measurement Accuracy of Fully Mechanized Caving Face
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Study on Dust Density Measurement Accuracy of Fully Mechanized Caving Face

机译：综放工作面粉尘密度测量精度研究。

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摘要

The fully mechanized caving faces use high power coal mining equipments and apply top coal caving technology. The dust density is high when the coal face is in production. Coal mining machine cutting, advancing supporting and top coal caving are the main sources of coal dust in fully mechanized caving face. When the dust is produced, it will be influenced by working face airflow. Gas-solid two-phase flow engenders and diffuses to the whole area of working face in the process of flowing. Fluent is applied to simulate dust's migration law in the working face and determine its spatial distribution condition. The simulation result can provide evidence for measuring dust density of fully mechanized caving face accurately. Sampling sites are determined according to working face actual situation. Starting time and duration of dust sampling and data processing are analyzed to determine the reasonable parameters and enhance accuracy for dust density measurement.
机译：综放工作面采用大功率采煤设备，并采用顶放技术。在生产采煤工作面时，粉尘密度很高。综放工作面煤尘的主要来源是采煤机的切割，超前支撑及顶煤开采。当产生粉尘时，它将受到工作面气流的影响。气固两相流在流动过程中产生并扩散到工作面的整个区域。 Fluent用于模拟工作面上粉尘的迁移规律并确定其空间分布条件。仿真结果为准确测量综放面粉尘密度提供了依据。采样地点根据工作面实际情况确定。分析了粉尘采样和数据处理的开始时间和持续时间，以确定合理的参数并提高了粉尘密度测量的准确性。

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