摘要
梁家煤矿巷道变形剧烈,难以维护。为了控制该矿软岩巷道变形,借助岩石力学试验、X射线衍射技术、SEM扫描电镜技术手段对该矿巷道软岩的微观特性进行了详细的试验研究,得出了该矿巷道围岩中黏土矿物的含量一般在20%~30%,在黏土矿物中,伊/蒙混层含量最高可达74%,高岭石最高含量可达49%,因此黏土矿物吸水膨胀是巷道围岩失稳变形的主要原因。
The severe deformation of roadway is hard to maintain in Liangjia coal mine. In order to control the deformation of roadways soft rock, studies the micro-characteristic of roadway soft rock by methods of rock mechanical test,X-ray diffraction and SEM technology. Results show that the content of clay minerals is generally 20% ~30%,in the clay minerals, the illite/fudge layer content is up to74%,the maximum content of kaolinite is up to 49%,water swelling clay minerals is the main reason that leads to deformation and instability of soft rock.
出处
《煤炭技术》
CAS
北大核心
2015年第3期74-76,共3页
Coal Technology
关键词
巷道变形
软岩
微观特性
吸水膨胀
roadway deformation
soft rock
micro-characteristic
water swelling
