This paper expounds the application of large-pipe-shed injecting technique in the construction of eccentrically compressed tunnel,makes analysis on the monitoring results,and sums up the functions of the advance pre-supporting technique in passing through the weak wall-rock.

Application of the leading pre-supporting technology in the process of the construction of bad geological tunnel;

Taking the construction practice of pedestrian inclined shaft passing through the quicksand bed in Xiyu Coal Mine, Taiyuan City, as the example, this paper expounds the principles of lead pipe-shield pre-support, the design of pipe-shield support, the construction technology, and the forms of secondary support, etc.