煤矿安全2019，Vol.50Issue(11)：14-17,4.DOI:10.13347/j.cnki.mkaq.2019.11.004
基于示踪气体技术的特厚煤层综放工作面漏风通道试验研究
Test Study on Air Leakage Channel of Fully Mechanized Top Coal Caving Face in Super Thick Seam Based on Tracer Gas Technology
孙珍平1
作者信息
- 1. 煤科集团沈阳研究院有限公司,辽宁 抚顺113122;煤矿安全技术国家重点实验室,辽宁 抚顺113122
- 折叠
摘要
Abstract
In order to find out the laws of air leakage in goaf of fully mechanized top coal caving face in extra thick seam, taking Tongmei Guodian Tongxin Coal Mine Company as the research background, tracer gas technology is used to analyze the air leakage in goaf between the surface borehole of 8202 working face and 8201 working face. The test shows that when 8201 working face is pushed to 70 m, the protective coal pillar(38 m)in 8202 working face has been fractured, and the two adjacent goaf areas have been connected, the 8202 goaf is connected with two adjacent goaf areas of the 8201 working face, and gas exchange takes place. Moreover, the 8202 goaf within this area has well-developed fractures and abundant air leakage channels. The gas velocity and the width of air leakage zone in the air leakage field are preliminarily determined to provide technical support for the later study of gas discharge in the overlying goaf.关键词
示踪气体技术/特厚煤层/综放工作面/漏风通道/采空区Key words
tracer gas technology/ extra thick coal seam/ fully mechanized top coal caving face/ air leakage passage/ goaf分类
矿业与冶金引用本文复制引用
孙珍平..基于示踪气体技术的特厚煤层综放工作面漏风通道试验研究[J].煤矿安全,2019,50(11):14-17,4.
