Abstract
Achieving energy independence is one of the most important issues of modern Ukraine. Solution of this problem is impossible without the exploration of the shelf of the Azov-Black Sea basin; therefore development and design of ocean-technical constructions for the hydrocarbon raw materials exploration in the conditions of the Black and Azov Seas is the main step. In this article we examine selection of the architectural-construction type of an ocean technical construction, taking into account the ice loads, characteristic for the Azov Sea basin. A neural network analysis was perormed of the forecast of the thickness of ice in winter period and the ice loads on several types of constructions were calculated. As a result of the calculations it was revealed that under the considered conditions, the most suitable type of construction is an ice resistant stationary platform of gravitational type, which includes an extended structure with inclined front face at the level (depth) of sea of 8,0 m, and at the depth of 12,0 m is an extended structure with a combination of inclined sections and vertical parts of the columns on the front face. Performed calculations are also important from the point of view of the decrease of technological works and consumption of materials during construction, since we applied real physical values of ice formations, not the maximal ones registered over 100 years.
Highlights
One of the main problems with the design of a platform for operation in ice, besides infrastructure and remoteness, is rather different properties of ice
– presence of ice fracture around the drilling platforms is an important factor, since the ice load from crushed ice is less than from a solid ice field. All these factors are taken into consideration at designing ocean-technical constructions, which work under complicated ice conditions in order to reduce ice-breaking support to a minimum, taking into account the possibility of resistance to the action of ice load, which a drilling platform will experience from any direction
The purpose and objectives of the study The purpose of the conducted research was to determine the architectural-construction type (ACT) of an ocean-technical construction for the Azov Sea shelf taking into account real ice loads
Summary
One of the main problems with the design of a platform for operation in ice, besides infrastructure and remoteness, is rather different properties of ice. Contemporary methods of design and estimation of constructions, used in the world practice, are based on the use of maximum values of ice load, obtained by the earlier observations [4,5,6,7]. This does not make it possible to estimate a real picture of the experienced loads, since in the last decade a change of the climatic conditions has been observed, including in the location of the designed ocean-technical constructions. The development of energy independence of Ukraine is a vital problem This implies the exploration of hydrocarbons, in particular, on the Azov Sea shelf and design of the projects of ocean-technical constructions, capable to operate in ice conditions (Fig. 1). To achieve the set goal, the following tasks were solved: – the type of ocean-technical constructions for the conditions of shoal and freezing sea was determined; – the estimation was performed of the ice loads taking into account neural network forecast of the thickness of ice for the existing designs of ocean-technical constructions
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