煤矿安全2019，Vol.50Issue(7)：259-262,4.DOI:10.13347/j.cnki.mkaq.2019.07.061
采动覆岩裂隙动态演化规律的三维模拟
Three-dimensional Simulation of Dynamic Evolution of Mining-induced Overburden Fractures
史博文 1白建平 2郝春生 3杨昌永 2姚晋宝4
作者信息
- 1. 河南理工大学 能源科学与工程学院,河南 焦作 454000
- 2. 易安蓝焰煤与煤层气共采技术有限责任公司,山西 太原030000
- 3. 山西蓝焰煤层气集团有限责任公司,山西 晋城 048006
- 4. 煤与煤层气共采国家重点实验室,山西 晋城 048000
- 折叠
摘要
Abstract
Based on the discrete element method of discontinuous media, the whole process analysis of overlying stratum migration and fracture evolution in coal mining process of 3213 face of Xinjing Mine is carried out by using 3D numerical simulation software. The results show that the shape and size of fractured enrichment area of overburden rock will change with the advancing of working face. At the initial stage of working face advancing, it takes on the shape of "arch". When working face advances to 80 m, it takes on the shape of "hollow circular arch"due to the gradual compaction of the central fissure in the goaf, and becomes"circular ring"after the mining is completed, and there are some differences in the size of the fracture enrichment zones at different positions in the "circle". The morphology of the fracture enrichment area at both ends of the goaf tendency is approximately the same, and along the mining direction, the width and height of the fissure enrichment area above the working face is slightly larger than the open-off cut.关键词
数值模拟/覆岩运移/裂隙富集区/离散元/数值模拟Key words
numerical simulation/overlying strata movement/fractured enrichment area/discrete element/numerical simulation分类
矿业与冶金引用本文复制引用
史博文,白建平,郝春生,杨昌永,姚晋宝..采动覆岩裂隙动态演化规律的三维模拟[J].煤矿安全,2019,50(7):259-262,4.
