瓦斯隧道内瓦斯浓度分布特征研究  

Study on the Characteristics of the Gas Concentration Distribution in the Gas Tunnel

作　　者：程广 Cheng Guang(Chongqing Research Institute Co.,Ltd.of China Coal Science and Engineering Group,Chongqing 400037)

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《现代工业经济和信息化》2021年第8期47-48,67,共3页Modern Industrial Economy and Informationization

摘　　要：以某瓦斯隧道检测瓦斯浓度分布特征的试验过程为例,试验中以人工检测与瓦斯自动监测技术相结合的方式大量采集,采用二次指数平滑、三次指数平滑法对采集数据进行修正,并对隧道拱顶、底板、距掌子面20 m附近及回风处的瓦斯浓度进行分析,揭示了隧道内瓦斯浓度分布特征。经研究发现,隧道拱顶含气量大,已接近或达到瓦斯爆炸极限值。Taking the test process of detecting gas concentration distribution characteristics in a gas tunnel as an example,we collected manual detection with gas automatic monitoring technology,used secondary exponential smoothing to correct the collected data,and analyzed the tunnel vault,bottom plate,20 m from the palm surface and at the return wind,which reveals the gas concentration distribution characteristics in the tunnel.It was found that the tunnel vault has a large gas content,which has approached or reached the gas explosion limit.

关 键 词：瓦斯隧道 瓦斯浓度 分布特征 

分 类 号：U458.1[建筑科学—桥梁与隧道工程]