摘要
通过对水泥砂浆、封孔器等封孔方法的分析，研究了它们在“三软”煤层中注水时存在的主要问题，并开发了单向自动截止阀， 它与封孔器配套使用，在郑州矿务局超化矿１１０９１
On the basis of sealing methods of cement mortar and sealing instrument analysis,chief problems with water infusion in “weak seam roof and floor” mine are studied,and the single direction rebound valve is made and used with sealing instrument.This practice has been gotten great success in 11091 working face of Chaohua Mine of Zhengzhou Mine Bureau.
基金
"九 五"国家重点科技项目
关键词
煤层
封孔方法
技术改造
注水
防尘
矿尘
weak seam roof and floor”mine,sealing methods,technological transformation
