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The development of explosive process in cryolithic zone due to formation of Yamal Crater
Abstract.The subject of this research is the natural explosive processes into cryolithic zones. The object of this research is the Yamal Crater. The authors meticulously examine the groups of the natural explosive processes in the territory of distribution of permafrost. A new approach towards the theory of the crater of gaseous discharge is proposed. It is based on the migration mechanism of gas fluids from the zones of gas hydrates disassociation into the overlying thickness of permafrost. The dissociation zone forms in segments of the local heatup through the heat input from the top. The authors demonstrate the gradualism of processes of preparing the explosive process that formed the Yamal Crater, as well as calculate the pressure of ejection of the frozen layer in emergence of the Yamal Crater. The work provides characteristic to the four phases of preparation of the natural explosive processes, considers various scenarios of such in cryolithic zone, as well as creation of the model of the heat and mass transfer processes alongside tense and distorted situation in permafrost that contain gas hydrated in terms of temperature variation and pressure. The following conclusions were made: the explosions of hydrolaccoliths and emergence of the craters of gaseous discharge belong to the same group of processes – physical explosions of natural origin; preparation of explosive processes in permafrost passes through several stages; in preparing explosions of natural origin in permafrost, a significant role is played by the migration of gas fluids.
Keywords: plastic deformations, staging, Yamal Crater, gas discharge funnel, fluids, dissociation, gas hydrates, permafrost, physical explosion, transit zone
Article was received:25-12-2017
This article written in Russian. You can find full text of article in Russian here .