摘要
为了解决官地矿沿空留巷采空区受到外部工程扰动产生围岩变形和顶板下沉等问题,本文对官地矿12607沿空留巷工作面巷道的围岩进行物理特性的研究,给出了试样在单轴压缩下的单轴抗压强度、内摩擦角、内聚力、弹性模量和泊松比的计算方法,并分析了单轴压缩下的应力应变曲线,同时给出了三轴压缩不同围压下的煤岩的位移随载荷的变化情况曲线,分析了曲线的具体情况,为矿井的安全开采提供了一定的解决方法和技术支持。
In order to solve the surrounding rock deformation and roof subsidence caused by external engineering disturbances,this paper studied the physical characteristics of the surrounding rock in 12607 working face along gob-side entry retaining in Guandi mine and obtained the calculation methods of uniaxial compressive strength,internal friction angle,cohesion,elastic modulus and Poisson’s ratio of the samples under uniaxial compression.The study also analyzed the stress-strain curves under uniaxial compression and the variation curves of the coal-rock displacement with load under triaxial compression,which could provide some solutions and technical support for the safe production in mines.
作者
王振喜
WANG Zhenxi(Guandi Mine,Xishan Coal and Electrictity Group,Co.,Ltd.,Taiyuan 030024,China)
出处
《山西煤炭》
2019年第4期56-59,共4页
Shanxi Coal
关键词
单轴压缩
弹性模量
应力应变
软岩巷道
uniaxial compression
elastic modulus
stress and strain
soft rock roadway
