The invention discloses an upward
cut-and-fill mining method for an in-
vein slope ramp of a gentle dip thin
vein. The method comprises the following steps:
stoping layers of an ore body, tunneling a cross gateway from a bottom middle
haulage drift to the ore body, tunneling a
diagonal slope ramp along the
vein to rise for certain height, and tunneling a slice drift, a reversing chamber and a sectional ore removal draw shaft forwards along the vein, wherein the reversing chamber and the sectional ore removal draw shaft are perpendicular to the slice drift; reversely tunneling the
diagonal slope ramp along the vein from one side of the slice drift to rise for the certain height, and tunneling the slice drift, the reversing chamber and the sectional ore removal draw shaft along the vein; dividing a stope by using the
diagonal slope ramp as the boundary, continuously propelling from one end of the vein to the other end of the vein, reaching all the
layers of the ore body by virtue of the diagonal slope ramp which is tunneled in the vein, and sequentially
stoping and filling from bottom to top by virtue of each layer
stoping unit in the stope. The upward
cut-and-fill mining method for the in-vein slope ramp of the gentle dip thin vein is high in
mechanization degree, small in out-vein stope preparation
engineering amount, low in labor intensity, low in ore
dilution loss, safe to operate and high in efficiency.