侧向支承压力下小煤柱巷道围岩加固技术  

Reinforcement Technology for Surrounding Rock of Small Coal Pillar Roadway under LateralSupport Pressure

作　　者：孙红军 韩晓雅 SUN Hongjun;HAN Xiaoya(School of Architecture Engineering,Zhengzhou University of Industrial Technology,Zhengzhou 451150,China;School of Civil Engineering,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]郑州工业应用技术学院建筑工程学院,郑州451150 [2]河南理工大学土木工程学院,河南焦作454000

出　　处：《煤炭技术》2023年第10期60-62,共3页Coal Technology

摘　　要：为分析小煤柱巷道的变形特征并提出支护方案,通过模型分析得出相邻工作面回采后基本顶的破断情况对侧向支承压力具有显著影响,本工作面回采后覆岩的进一步断裂导致煤柱帮侧向压力增大,实际工程中出现煤柱帮不对称变形情况;通过数值模拟得出工作面开挖后小煤柱能基本维持巷道的稳定性,但煤柱帮危险性加大,需制定补强方案,确保巷道围岩稳定性。最终补强方案加强了对煤柱帮及顶板的控制,现场应用效果良好。To analyze the deformation characteristics of the small coal pillar roadway and propose a support plan, analyze the model and concludes that the breakage of the basic roof of adjacent working faces after mining has a significant impact on the lateral support pressure. The further fracture of the overlying rock after mining in this working face leads to an increase in the lateral pressure of the coal pillar, resulting in asymmetric deformation of the coal pillar in practical engineering;through numerical simulation, it is found that the small coal pillar can basically maintain the stability of the roadway after excavation, but the danger of the coal pillar wall increases. Therefore, a reinforcement plan needs to be developed to ensure the stability of the surrounding rock of the roadway. The final reinforcement plan strengthened the control of the coal pillar and roof, and the on-site application effect was good.

关 键 词：小煤柱 侧向压力 不对称变形 围岩加固 

分 类 号：TD353[矿业工程—矿井建设]