Among the safety problems of coal mines the goafwater and gas outburst are main problems.
煤矿安全的突出问题之一是突水事故、瓦斯突出。
2
This paper also provided the experience in preventing the goafwater by adapting water detection and water release concentratedly, and by using sleeve to control water release.
采取掘进中集中探放水、利用套管控制放水量的方法有效消除了积水威胁，为防治老空积水提供了经验。
3
This paper analyzes the type of drawing off water in goaf, introduces the technology of it at different goaf, and provides the methods of solving the existing questions.