Abstract: The technology of reserving space for lane along the tunnel by self-filling with breakage wastes in the working face is tested and investigated through the special support of integrating the forced roof-cut and protecting side-slope with the waste rock, associating with the mining technical condition and occurrence condition of coal seam in the haulage roadway of 1528 working face of Gequan mine. Based on a great deal of comparative analysis and field measurements, the deformation of tunnel's roof and floor and two-side wall rocks affected by the twice repeated mining is investigated, obtaining the main factors for the deformation law of wall rocks in tunnel. This provides a theoretical basis and technical support for the actual application of the technology of reserving space for lane along the tunnel by self-filling with breakage wastes.

Key words: Breakage waste, Self-filling, Reserving space for lane along the tunnel, Underground pressure behavior, Special support