不良地质条件下深竖井严重堵井处理技术研究

某水电站项目压力竖井群,整体分三级设置,最大高差738.65m。竖井群所处地质条件极其复杂,贯穿三个断层,岩体裂隙非常发育,完整性差。扩挖过程中,受井壁垮塌和出渣不及时,遭遇了严重堵井事故,对整个项目的进度造成了巨大的影响。文章通过对此次堵井事故的调研分析,尤其是堵井处理措施的详细介绍,为其他类似工程提供借鉴和参考。

The pressure shaft group of a hydropower station project is divided into three levels,and the maximum height difference is 738.65m.The geological conditions of the shaft group are extremely complex,running through three faults,the rock mass fissures are very developed and the integrity is poor.In the process of expansion and excavation,due to sidewall collapse and untimely slag discharge,a serious well plugging accident was encountered,which had a great impact on the progress of the whole project.In this paper,through the investigation and analysis of the well plugging accident,especially the detailed introduction of plugging treatment measures,so as to provide reference for other relevant projects.