Study on Dust Density Measurement Accuracy of Fully Mechanized Caving Face

被引：0
|
作者：
Zhang Shengzhu [1 ]
Cheng Weimin [1 ]
Zhou Gang [1 ]
Yang Peng [1 ]
Qi Yudong [1 ]
机构：
[1] Shandong Univ Sci & Technol, Key Lab Min Disaster Prevent & Control, Qingdao 266510, Shandong, Peoples R China
来源：
PROGRESS IN SAFETY SCIENCE AND TECHNOLOGY, VOL VII, PTS A AND B | 2008年 / 7卷
关键词：
fully mechanized caving face; dust; density measurement; accuracy;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
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.
引用
收藏
页码：1488 / 1492
页数：5
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