下保护层开采采空区覆岩破坏特征研究

Research on Damage Characteristics of Goaf Overburden Strata in under Protecting Coal Stratum

下保护层的开采必然引起采空区上覆岩层的移动和破坏,覆岩的运动为被保护层的卸压提供了空间,也为被保护层的瓦斯解吸和运移提供了通道。采用UDEC软件,模拟保护层开采,得出了采空区上覆岩层的运动规律和破坏特征,对于指导工程实践具有重要意义。

The under-protecting coal stratum will inevitably lead to the movement and damage of goaf overlying strata, and the movement of overlying strata can provide the space for the protection of the protective layer, and provide a channel for the gas analysis and migration of the protected layer. Using UDEC software to simulate the protection layer mining, in order to study the result of movement law and damage characteristics of overlying strata in goaf, it has an important significance to guide engineering practice.