成贵铁路白杨林高瓦斯隧道施工通风效果分析

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• 英文论文题名：Analysis on the Construction Ventilation Effects in Baiyanglin Gas Tunnel on Chengdu-Guiyang Railway
• 论文作者：张云龙 ; 郭春 ; 徐建峰 ; 郭雄 ; 杨家松 ; 辜文凯 ; 张光荣
• 英文论文作者：ZHANG Yunlong ; GUO Chun ; XU Jianfeng ; GUO Xiong ; YANG Jiasong ; GU Wenkai ; ZHANG Guangrong ; Key Laboratory of Transportation Tunnel Engineering ; Ministry of Education ; School of Civil Engineering ; Southwest Jiaotong University ; China Railway Erju Group Corporation
• 年：2016
• 作者机构：交通隧道工程教育部重点实验室;西南交通大学土木工程学院;中铁二局第二工程有限公司;
• 论文关键词：瓦斯隧道 ; 现场测试 ; 瓦斯释放孔
• 英文论文关键词：Gas tunnel ; Field test ; Gas release hole
• 会议召开时间：2016-10-24
• 会议录名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会论文集
• 语种：中文
• 分类号：U453.5
• 学会代码：OGTY
• 会议名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会
• 会议地点：中国四川成都
• 主办单位：中国土木工程学会隧道及地下工程分会
• 学会名称：中国土木工程学会
• 页数：6
• 文件大小：1406k
• 原文格式：O
• 会议级别：全国

摘要

以成贵铁路白杨林瓦斯隧道为工程背景,为准确了解隧道内瓦斯浓度分布规律,充分了解隧道掌子面瓦斯释放情况,对掌子面附近、二衬台车处、瓦斯释放孔内及风管末端分别进行了风速风压以及瓦斯浓度监测。监测结果表明:采用压入式独头通风时,掌子面可分为三个区域:正压区、负压区和无压区,负压区的存在有利于瓦斯的释放。瓦斯浓度沿隧道纵向逐渐减小。采取高压局扇与瓦斯隔板相结合的方式可以有效减小涌出点附近瓦斯浓度。
Based on the Baiyanglin gas tunnel on Chengdu-Guiyang Railway,combined with the pressed ventilation,the author monitored the wind velocity and gas concentration of face,second lining,gas release hole and the air duct outlet to research the gas distribution rule near the face.The results show that when the pressed heading face ventilation is adopted,the face is divided into three zones:positive pressure zone,negative pressure zone and non-pressure zone,and the negative pressure zone is conducive to the gas release.The gas concentration is decreasing with the distance from air duct outlet to face.For the gas emission point,the gas concentration near the point can be decreased by combination the high-pressure fan and gas splitter plate.

引文

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