Abstract
This article deals with the genesis of the gas discharge funnel located 30 km south of the Bovanenkovskoye gas condensate field and named the Yamal crater. A new approach contains the theory of the formation of similar funnels due to the structural transformations of the frozen massif under the influence of gases coming from the decomposition of gas hydrates. The leading role of lakes in the formation of local zones of dissociation of gas hydrates was declared. The estimation of the pressure that is necessary for migration of fluids in frozen rocks and the explosion that formed the Yamal crater was carried out.
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Abbreviations
- h :
-
Ejection depth, meters
- ϕ :
-
Angle of inclination to the conical surface, radians
- H :
-
Height of conical body, meters
- R 1 :
-
Radius of the base of the conical body, meters
- R 2 :
-
Upper radius of conical body, meters
- [σ]:
-
Maximum permissible tensile stress, mPa
- [τ]:
-
Maximum allowable shear stress, mPa
- F :
-
Vertical force of adhesion of the lateral surface to the ground, newtons
- G :
-
Strength of body weight, newtons
- P 0 :
-
Atmospheric pressure, newtons
- ρ мг :
-
Frozen soil density, t/m3
- g :
-
Acceleration of gravity, m/s2
- \( {p}_h^{\ast } \) :
-
Critical ejection pressure from the depth, mPa
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Khimenkov, A.N. et al. (2019). Structural Transformations of Permafrost before the Formation of the Yamal Craters. In: Svalova, V. (eds) Natural Hazards and Risk Research in Russia. Innovation and Discovery in Russian Science and Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-91833-4_22
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DOI: https://doi.org/10.1007/978-3-319-91833-4_22
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