摘要
为了研究顺层瓦斯抽采钻孔周围煤体卸压范围和应力分布,采用理论分析和数值模拟相结合的方法,理论分析了顺层钻孔煤体破坏机理,在钻孔周围形成了弹性变形区、塑性软化区和卸压破裂区以及分析了顺层钻孔煤体应力分布和位移方程;数值模拟了不同孔径下钻孔卸压范围和应力分布,得到了顺层钻孔卸压范围随孔径变化函数关系。
In order to study the pressure relief range and stress distribution of coal around boreholes for gas extraction along seams,the failure mechanism of coal along seams was analyzed by combining theoretical analysis with numerical simulation.Elastic deformation zone,plastic softening zone and pressure relief fracture zone were formed around boreholes,and the stress distribution and displacement equation of coal along seams were analyzed.The pressure relief range and stress distribution of boreholes are obtained,and the function relationship between the pressure relief range and borehole diameter was obtained.
作者
苏高鹏
Su Gaopeng(Sihe Coal Mine,Shanxi Jincheng Anthracite Coal Mining Group Co.,Ltd.,Jincheng 048205,China)
出处
《能源与环保》
2019年第10期21-24,共4页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
关键词
顺层瓦斯抽采
钻孔周围煤体
卸压范围
应力分布
gas extraction along seam
coal body around borehole
pressure relief range
stress distribution
作者简介
苏高鹏(1985-),男,山西晋城人,助理工程师,2005年毕业于山西煤炭职业技术学院,现从事煤矿生产技术工作.
