abstract:The Voigt effect is one of a class of effects, resulting in what is called magnetic birefringence or magnetic double refraction. It is a magneto-optical phenomenon with a similar origin to the Faraday effect.
The actionof the supportinpreservingstabilityofsurrounding rock masses is analyzed and itseffect is proved being remarkablewithusingKelvin-Voigt model and viscoelastictheory.