Equation about wedge failure


please tell me about the equation of rock wedge failure with subsaturated water condition and seismic loading?

Soil Mechanics / Geotechnical Rock Mechanics Mining Analysis Education Geotechnical Earthquake Engineering & Soil Dynamics Environmental Geotechnics Geotechnical Investigations & In-Situ Testing

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See Hoek's practical engineering Manual p. 116 and 117.  https://www.rocscience.com/documents/hoek/corner/Practical-Rock-Engineering-Full-Text.pdf This is for the plane failure, but you would solve it for a wedge along the intersection plane using the apparent dip and strike.