帷幕注浆技术在斜井横穿流沙层中的应用

Application of Curtain Grouting Technology in the Auxiliary Inclined Across the Quicksand lLayer

针对某煤矿副斜井横穿流沙层时出现塌方和大量涌水的现象,提出了采用地面帷幕注浆进行加固堵水的治理方案,详细介绍了地面帷幕注浆参数和施工工艺等。工程实践结果表明,地面帷幕注浆有效的控制了该斜井在横穿流沙层段时出现的地质松软塌方情况,使斜井在整个流沙层段施工过程中涌水量降低了84%,确保了斜井正常掘进。

Combine with the engineering geological conditions of one coal mine auxiliary inclined shaft across the quick sand strata,proposed a treatment scheme that curtain grouting to reinforce the ground water-plugging,and introduced in detail the application of the curtain grouting technology. Engineering practice results show that the ground curtain grouting effectively control of the slope in across the quicksand of soft geological landslides and water conditions,and ensure the normal excavation slope.