留顶法在工背支护巷道修复施工中的应用

Application of Roof Reserving Method in Rebuilding Construction of I- beam and Backboard Supported Tunnel

在工背支护巷道的修复施工中,采用留顶法,最大限度维护了原顶板,避免了对顶板的再次破坏,减少了出煤工作量,降低了工人劳动强度。在实际应用中,具有安全、快速、可操作性强的特点。

In the rebuilding construction of I- beam and backboard supported tunnel, the application of roof reserving method can maintain original roof to a maximum, avoid the roof from being damaged again, reduce the workload of coal production, and decrease the labor strength of the workers. And in actual application, this method possesses the features of safety, rapidness and strong operability.