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工作面进行试验取得了良好的效果．
In this paper, sealing methods of mortar and sealing instrument areanalyzed, their chief problems with water injection in 'weak seam roof and floor' mineare studied, and the single direction closing valve is made and used with sealinginstrument .This practice has been gotten great success in 11091 work face of ChaohuaMine of Zhengzhou Mine Bureau.
出处
《河北建筑科技学院学报》
1999年第2期49-53,共5页
Journal of Hebei Institute of Architectural Science & Technology
基金
"九五"国家重点科技攻关项目
关键词
煤层
注水
防尘
封孔技术
weak seam roof and floor' mine, sealing methods, technological transformation
