油气田瓦斯隧道通风防灾优化研究  

Ventilation and disaster prevention optimization of gas and gas field gas tunnel

作　　者：白玉山 姚海波 江俊 高峰[2] 张文选[2] BAI Yu-shan;YAO Hai-bo;JIANG Jun;GAO Feng;ZHANG Wen-xuan(School of Civil Engineering,North China University of Technology,Beijing 100144,China;SINOHYDRO Bureau Co.Ltd.,First Branch,Chengdu 610084,China)

机构地区：[1]北方工业大学土木工程学院力学与地下空间系,北京100144 [2]中国水利水电第七工程局有限公司第一分局,四川成都610084

出　　处：《河南城建学院学报》2020年第1期64-70,共7页Journal of Henan University of Urban Construction

基　　金：国家自然科学基金项目(41772335);科技创新能力建设项目(PXM2017-014212-000015);中冶交通建设集团科技项目(2017-SZ1);首钢矿业公司项目(2017-SG1);国家重点研发计划项目(2016YFC0701810)。

摘　　要：为解决瓦斯隧道通过高瓦斯区段时洞内瓦斯浓度超限的情况,以成都龙泉山高瓦斯隧道为工程背景,采用数值模拟建立瓦斯运动模型真实模拟现场瓦斯扩散情况。研究发现压入式通风方式使风流在洞内形成明显分区,洞内瓦斯在初始状态积聚在拱顶部位,在通风状态下易积聚在拱脚部位。在此基础上,提出增加局扇,侧风管,提高风管内风速的方法,并结合现场监测解决瓦斯隧道穿越高瓦斯带瓦斯浓度超限的问题,为瓦斯隧道施工通风提供相关经验。In order to solve the situation that the gas concentration in the cave exceeds the limit when the gas tunnel passes through the high gas section,the gas field model of Chengdu Longquan Mountain is used as the engineering background.The gas simulation model is used to simulate the gas diffusion of the site.The study found that the press-in ventilation method makes the wind flow form a distinct partition in the cave.The gas in the cave accumulates in the initial position of the arch,and it is easy to accumulate in the arched part under ventilation.On this basis,the method of increasing the local fan,the side air duct,and the wind speed in the air duct is proposed,and the on-site monitoring is used to solve the problem that the gas tunnel crosses the gas concentration in the high gas zone,and provides relevant experience for the ventilation of the gas tunnel.

关 键 词：瓦斯隧道 数值模拟 施工通风 瓦斯浓度 

分 类 号：U453.5[建筑科学—桥梁与隧道工程]