The invention relates to the technical field of
engineering blasting, in particular to a method for the high-notch blasting demolition of a thin-wall
reinforced concrete chimney. The method includes the steps of step 1, determining the collapse direction of the
chimney and notch parameters according to the surrounding environment of the
chimney, the height of the chimney and a chimney
flue; step 2, pretreating a notch; step 3, forming a directional window and a positioning hole; step 4, forming a shot hole in a position where the notch is formed, and conducting charging to set a detonating network; and step 5, blasting the chimney. According to the method for the high-notch blasting demolition of the thin-wall
reinforced concrete chimney, a high-position notch mode is used, an upper
barrel body is lowered in the dumping process, a lower
barrel body is dismantled through gravity, and the dumping coverage range of the whole chimney can be effectively reduced; and when the method is used in construction, the two initial closing angles of the high-notch are accurately controlled to be the same in size by adopting a mode of drilling by a hollow
drill, so that the chimney is stressed uniformly and symmetrically, and the
controllability of the dumping direction of the chimney is improved.