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In this paper, rock structural plane cybernetics as the basis , according to the slope surface and the excavation of dominant structural relationship between the slope of the mudstone cutting slope are classified. On this basis , for the mudstone cutting slope failure mechanism is analyzed that the main cutting slope mudstone bedding shearing , bedding collapse song, anti-dumping bending - fracturing , horizontal pressure-induced shear and tangential wedge failure mechanism of the body , such as several slip and corresponding mode. For different failure mechanism , establish a corresponding mechanical model for the stability calculation , reached a different failure modes of slope stability factor calculation . Finally, by analyzing the rock slope prestressed cable control mechanism of the pre- anchor design calculations were optimized. The above results for the analysis of physical engineering , has been confirmed.
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