采矿与安全工程学报2017，Vol.34Issue(3)：418-424,7.DOI:10.13545/j.cnki.jmse.2017.03.003
薄基岩综放采场支架-围岩关系研究
Relationship between support and surrounding rock of fully-mechanized sublevel caving face with thin bedrock
摘要
Abstract
With the fully-mechanized sublevel caving face with thin bedrock in Sima Coal Mine of Lu'an Group as the engineering background,through field measurement,numerical simulation,and theoretical analysis,the relationship between support and surrounding rock of fully-mechanized sublevel caving face with thin bedrock was studied,the relationship between working resistance of support and roof convergence was obtained in fully-mechanized sublevel caving face with thin bedrock,and the reasonable calculation method of working resistance of support was given.The research results have indicated that the affected area of abutment pressure under thin bedrock of overburden is far lower than that under thick bedrock;the relationship between working resistance of support and roof convergence is still qualified for the hyperbolic relations;in addition,the "cushioning effect" in the top coal reduces under high confining pressure,and the top coal shows the characteristics of "like a rigid body";thus,the pressure of main roof under "given deformation" condition could be effectively transmitted to the shield,improving its working resistance.The results have reasonably explained the phenomenon of intensive pressure behavior and that shield working resistance for thin bedrock overburden was higher than those of thick bedrock,thus provide a reference for the reasonable selection of support in fully-mechanized sublevel caving face with thin bedrock.关键词
薄基岩/综放开采/工作阻力/支架-围岩Key words
thin bedrock/fully-mechanized sublevel caving face/working resistance/relationship between support and surrounding rock分类
矿业与冶金引用本文复制引用
杜锋,郑金雷..薄基岩综放采场支架-围岩关系研究[J].采矿与安全工程学报,2017,34(3):418-424,7.基金项目
煤炭资源与安全开采国家重点实验室开放基金项目(13KF02) （13KF02）
深部岩土力学与地下工程国家重点实验室开放基金项目(SKLGDUEK1310) （SKLGDUEK1310）
河南省教育厅科学技术研究重点项目(14A440001) （14A440001）
