The mining bed separation zone grouting technique has been tested successfully in some collieries which could decrease or slow down the subsidence developing to the surface.

• 覆岩离层带高压注浆减缓地表沉降技术可以有效地减少或缓和沉降向地表发展。离层空间发育大小是进行离层带高压注浆工程设计的重要参数之一。