受压状态下块状煤体透气性试验研究  

Experimental Study on Permeability of Lump Coal Body Under Load

作　　者：蔡璐[1,2] 宋译[1,2] 

机构地区：[1]湖南科技大学能源与安全工程学院,湖南湘潭411201 [2]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201

出　　处：《中州煤炭》2015年第2期4-7,12,共5页Zhongzhou Coal

基　　金：湖南省自然开学基金项目(2015JJ4023);湖南省教育厅项目(B31317);河南省瓦斯地质与瓦斯治理重点实验室开发基金(WS2013A07)

摘　　要：煤层渗透性是瓦斯流动理论重要的研究内容,含瓦斯煤渗透率是反映瓦斯气体于煤层中渗流难易程度的重要指标,是标志着煤层中瓦斯抽采抽放难易程度的关键参数,同时也是煤层瓦斯多场耦合的重要物性参数。以新安矿块状软煤煤样为研究对象,搭建了单轴煤层渗透性试验平台,对煤块渗透特性的固气耦合进行试验研究,旨在探索耦合作用下瓦斯气体的流动和煤岩体的固气耦合特性,以确保高瓦斯煤矿在服务年限内的正常使用。实验结果表明,煤体渗透率与垂直煤体裂隙节理面的轴压和进气压力呈反比关系,而与煤样的体积呈正比关系。The permeability of coal seam is an important research content of gas flow theory,permeability of coal containing gas in coal seam is an important index which can reflect difficult degree of gas seepage,it is a key parameter which marks the difficult degree of gas drainage,and it is also an important physical index of coal seam gas of multi-field coupling. Taking soft coal sample in Xin＇an Coal Mine as an research object,a single shaft coal seam permeability test platform was constructed for the permeability properties of coal,experimental research was carried out on solid and gas coupling of the permeability properties of coal. The purpose was to obtain the characteristics of gas flow and solid and gas coupling of coal and rock under coupling action,and to ensure the normal usage of high gas coal mine in the service life,which has the important significance to the safety of high yield and high efficient mining. The experimental results show that,coal permeability and vertical cracks on the surface of the joint of coal shaft is inversely proportional with pressure and inlet gas pressure,and is positively with the volume of coal sample.

关 键 词：原煤 固气耦合 渗透率 瓦斯抽采 

分 类 号：TD712[矿业工程—矿井通风与安全]