Study on Dust Density Measurement Accuracy of Fully Mechanized Caving Face

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 dusts 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.

关键词： fully mechanized caving face dust density measurement accuracy

作者: ZHANG Shengzhu CHENG Weimin ZHOU Gang YANG Peng QI Yudong

作者单位: Key Laboratory of Mining Disaster Prevention and Control,Shandong University of Science and Technology,Qingdao 266510,Shandong,China

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 1488-1492

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）