摘要
本文针对马蹄沟煤矿松软破碎煤层的工程地质条件,探讨了联合锚杆支护形式以及不同的断面形状在这些特殊地质条件下的巷道中运用,通过理论分析、数值模拟、现场监测,对大跨度高地压巷道的支护设计方法进行研究,得出了在大跨高地压破碎巷道中可应用鼓形断面和差异锚杆支护等较新颖的支护方式的结论,从而解决了巷道施工和维护的一系列难题,达到降低支护成本的目的.
In the incompact frangible factual engineering geological condition of Matigou Coal Mine, the paper studies the application feasibility of different kinds of bolts and different kinds of section shape in roadway in some specific geological conditions, by using theoretical analysis, numerical imitation and monitoring, and brings forward the well supporting methods such as drum shape section and different bolt and so on. The method has been applied to the mine roadway where it is hard to support. The support effects show that the methods in the paper can solve some key engineering problems during constructing and main safeguard and reduce the cost of roadway support.
出处
《贵州科学》
2007年第B05期257-262,共6页
Guizhou Science
关键词
破碎围岩
高地压
联合支护
数值分析
frangible surrounding rock
high field stress
united support
numerical analysis
