局部冻结法在西部大型矿井立井凿井中的应用

Application on Partial Freezing Method in Shaft Sinking of West Large-scale Coal Mine

在分析蒙陕矿区某矿副井穿越地层的水文地质条件的基础上,通过对比分析不同冻结方案的安全、技术、经济指标,确定采用局部冻结法进行立井凿井施工。工程实践表明,局部冻结法能够满足矿井建设的需要,实现了立井快速、安全、高效凿井施工的目标。为我国西部大直径、中深井筒的安全高效建设积累了经验,具有较好的示范作用。

Based on the analysis in the hydrogeological condition of a coal mine auxiliary shaft in Inner Mongolia and Shaanxi mining area passed through stratum, through comparing and analyzing the indexes of safety, technology and economy in different frozen plans, the partial freezing method in shaft sinking construction is determined. Engi neering practice shows that the partial freezing method can meet the needs of coal mine construction, achieve the goal of fast, safe, efficient shaft sinking construction. It accumulated the practical experiences for safe and efficient con struction in large diameter and mid depth shaft in western china, has a good demonstration effect.