煤层渗透特性影响因素的研究现状与思考  

Research Status and Thinking of Influence Factors About Seepage Properties of Coal Seam

作　　者：赵洪宝[1,2] 李伟[1] 胡桂林[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《煤矿安全》2016年第7期177-181,共5页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51474220);国家重点实验室开放课题资助项目(SKLCRSM13KFB11);中央高校基本科研业务费资助项目(2009QZ03)

摘　　要：煤层渗透特性是目前业内研究的热点和难点问题之一。通过对前人的研究方法和研究结果进行比较,着重对地应力、瓦斯压力和温度3个影响因素进行总结,并得到如下结论:煤样的渗透率变化与煤岩体内孔隙、裂隙的变化情况一致;瓦斯压力对煤样渗透率的影响存在有效应力主导阶段、煤基质吸附-解吸变形主导阶段和滑脱效应主导阶段;在较低的温度下,煤样渗透率随温度升高而降低;而较高温度下,随温度升高而升高。通过对上述影响因素研究现状的总结和思考,指出了今后亟待解决的科学问题和研究方向。Coal seam permeability is the one of the hotspots and difficult problems in the field of meathne flowing. Compared the previous research methods and results,we emphasize the stress,gas pressure and temperature and get the following conclusions： coal sample permeability is associated with the pores and changes of the fractures; the influence on coal samples caused by gas pressure exsits effective stress dominating stage,the matrix adsorption-desorption deformation dominating stage and Klinkenberg effect dominating stage; the permeability will decrease with the temperature increase at lower temperature but will be opposite at higher temperature.Through the summary and thinking about the above conclusions,we point out the scientific problems need to be solved and the trend of future development.

关 键 词：瓦斯流动 煤层渗透特性 影响因素 研究现状 研究方向 

分 类 号：TD712[矿业工程—矿井通风与安全]