阳泉矿区煤样不同受力条件下变形规律研究  

Study on Deformation Law of Coal Samples under Different Stress Conditions in Yangquan Mining Area

作　　者：张军林 樊会明 蔺玄敏 李国伟 ZHANG Junlin;FAN Huiming;LIN Xuanmin;LI Guowei(School of Mechanics and Engineering,Liaoning Technical University,Fuxin 123000,China;Shanxi Huayang Group Xinneng Co.,Ltd.,Yangquan 045000,China;General Research Institute of Shanxi Huayang Group Xinneng Co.,Ltd.,Yangquan 045000,China)

机构地区：[1]辽宁工程技术大学力学与工程学院,辽宁阜新123000 [2]山西华阳集团新能股份有限公司,山西阳泉045000 [3]山西华阳集团新能股份有限公司研究总院,山西阳泉045000

出　　处：《煤炭技术》2024年第11期178-181,共4页Coal Technology

摘　　要：为探究煤体在不同受力条件下的变形规律,采用自主研发的吸附-应力-渗流煤体变形试验系统,以阳泉矿区新景矿3^(#)煤层煤样为研究对象,开展了不同应力条件下和不同应力-孔隙压力双重条件作用下的煤体变形规律试验研究。研究发现,随着围压的增加,煤体的纵向应变呈线性增长,而横向应变则呈线性减小。在轴围压保持不变的情况下,孔隙压力与煤体的纵向和横向变形之间存在二次函数关系。随着围压的增大,孔隙压力对煤体的横向和纵向变形的影响会逐渐减弱。围压对煤体变形的显著性远大于孔隙压力对煤体变形的显著性。In order to explore the deformation law of coal body under different stress conditions,the self-developed adsorption-stress-seepage coal body deformation test system is used to study the coal body deformation law under dfferent stress conditions and different stress-pore pressure dual conditions,taking the coal sample of Xinjing mine No.3 in Yangquan mining area as the research object.It is found that with the increase of confining pressure,the longitudinal strain increases linearly,while the transverse strain decreases linearly.When axial confining pressure remains constant,there is a quadratic function relationship between pore pressure and longitudinal and transverse deformation of coal.With the increase of confining pressure,the influence of pore pressure on transverse and longitudinal deformation of coal will gradually weaken.The effect of confining pressure on coal deformation is much greater than that of pore pressure on coal deformation.

关 键 词：应力 孔隙压力 煤体变形 瓦斯灾害 

分 类 号：TD712[矿业工程—矿井通风与安全]