煤矿安全2012，Vol.43Issue(4)：132-134,138,4.
沿空留巷“Y”型通风条件下采空区漏风测试及分析
The Test and Analysis of Gob Air Leakage in Gob-side Entry Retaining with Y-Type Ventilation Condition
邬剑明 1李明珠 1周春山1
作者信息
- 1. 太原理工大学矿业工程学院,山西太原030024
- 折叠
摘要
Abstract
Based on the long-term continuous detection of the gas change in gob by using beam tube monitoring system,combined with SF6 tracing gas technology,the air leakage condition in gob was tested on No.154307 workface of Fenghuangshan coal mine which firstly using gob-side entry retaining with Y-type ventilation.The results indicated that the air leakage scope in gob was wide and the amount of air leakage was large in gob-side entry retaining with Y-type ventilation.Within a distance of 400 m to the workface,the oxygen content was about 20% with air leakage velocity of 0.027~0.075 m/s,being a rapid change area of wind speed.At a distance over 400 m to the workface,the oxygen content was about 16% with air leakage velocity of 0.017~0.024 m/s,being a slow change area of wind speed.关键词
沿空留巷/Y型通风/束管监测/SF6示踪/漏风规律Key words
gob-side entry retaining/Y-type ventilation/beam tube monitoring/SF6 tracing gas/air leakage law分类
矿业与冶金引用本文复制引用
邬剑明,李明珠,周春山..沿空留巷“Y”型通风条件下采空区漏风测试及分析[J].煤矿安全,2012,43(4):132-134,138,4.
