摘要
通过对沿特厚煤层底板掘进的大断面矩形煤巷开挖后围岩应力演化特征、变形破坏规律的分析,揭示了大断面矩形煤巷稳定性控制机理。由此提出了大断面矩形煤巷锚网索喷钢带联合支护技术,并在实施过程中通过监测的量化信息适时改进。工程实践证明,该技术能够较好地控制大断面矩形煤巷的围岩变形。
By the analysis of stress evolving characteristics, deformation failure laws of coal roadway surrounding rock in extremely thick seam, the paper revealed the stability control mechanism of large section and rectangular coal roadway, proposed the combined support- ing technology of boh-mesh-anchor-spout-beh for large section and rectangular roadway. Engineering practice proved that the technology can better control surrounding rock deformation of large section rectangular roadway.
出处
《陕西煤炭》
2013年第4期57-60,共4页
Shaanxi Coal
关键词
特厚煤层
大断面
矩形煤巷
力学特征
extremely thick seam
large section
coal roadway of rectangular shape
mechanical characteristics
