大气压变化对采空区瓦斯涌出的影响及其防治  

Influence of Atmospheric Pressure Change on Gas Emission in Goaf and Its Prevention

作　　者：胡德萍 廖志成 Hu De-ping;Liao Zhi-cheng(Jiangxi Coal Industry Group Co.,Ltd.,Pingxiang Branch Anyuan Coal Mine,Jiangxi Pingxiang 337000)

机构地区：[1]江西煤业集团有限责任公司萍乡分公司安源煤矿,江西萍乡337000

出　　处：《山东煤炭科技》2020年第8期58-61,共4页Shandong Coal Science and Technology

摘　　要：地表大气压变化引起井下采煤工作面风压同步变化,采空区气体随着大气压的变化呈“膨胀—收缩”的“呼吸”状态,导致采空区瓦斯异常涌出。通过分析发现这一过程的变化原因和规律,并通过风量调节、工作面调节升压、采空区高位钻孔瓦斯抽放等防治措施,解决了这一隐患,确保了工作面安全生产。The change of surface atmospheric pressure causes the synchronous change of air pressure in underground coal mining face.With the change of atmospheric pressure,the air in goaf presents"expansion contraction"breathing state,which leads to abnormal gas emission in goaf.Through the analysis,the causes and laws of this process were found out,and the prevention measures such as air volume regulation,working face pressure regulation and gas drainage from high-level borehole in goaf were adopted to solve the hidden danger and ensure the safety production of working face.

关 键 词：大气压变化 采空区 瓦斯涌出 治理技术 

分 类 号：TD712.5[矿业工程—矿井通风与安全]