Load migration impact mine pressure prevention and control method for ground fracturing thick and hard rock stratum
A technology for impacting rock pressure and rock formation, which is applied in surface mining, underground mining, drilling equipment and methods, etc., can solve the problems of difficulty in finding remedial pressure relief methods, limited top-cut height, and unsatisfactory effects, and achieves increased support, Increase the amount of breakage and reduce the effect of sinking
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[0023] The technical solutions of the present invention will be described in more detail below in combination with the accompanying drawings in the embodiments of the present invention.
[0024] A load migration impact rock pressure prevention method for ground fracturing of thick hard rock formations, comprising the following steps:
[0025] S1, determining the position of the thick and hard rock layer 2 in the overlying rock based on the lithology and thickness of the formation, and the thick and hard rock layer 2 is the thick and hard rock layer above the place where the separation layer occurs after the mining of the working face;
[0026] Since the abscission layer occurs in the curved subsidence zone, the thick and hard rock formation here specifically refers to the thick and hard rock formation in the curved subsidence zone; figure 1 As shown, it includes four layers of thick hard rock 2 from top to bottom;
[0027] Preferably, the position of the separation layer can ...
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