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Восстановление формы источника электрического поля как решение обратной задачи геоэлектрики

Восстановление формы источника электрического поля как решение обратной задачи геоэлектрики

Abstract

Актуальность работы. Производство горных работ проходит обычно в сложных горно- геологических условиях нарушенности вмещающих пород. Дистанционное (с дневной поверхности), предварительное определение местоположения таких нарушенностей (сместителей) является весьма важной задачей для обеспечения безопасности ведения горных работ. Кроме того, при производстве подземных горных работ появляются области перепадов механических напряжений, которые являются потенциальными очагами горно-тектонических ударов. Определение местоположения этих областей также ведёт к повышению безопасности ведения горных работ. Цель работы. Разработка численного алгоритма и его программной реализации для решения обратной задачи воостановления формы источника электрического поля по измеренным значениям потенциала на дневной поверхности. Методы исследования. Методы математической физики - для формулировки задачи восстановления формы источника, как обратной, некорректной задачи решения интегрального уравнения 1-го рода. Методы математического программирования - для формирования численной расчётной схемы приближённого последовательного восстановления формы источника поля. Результаты. Произведён расчёт величины потенциала электрического поля, порождённого тестовой областью эллиптической формы, расположенного в трёхслойной среде. Используя полученные значения, решена обратная некорректная задачи восстановления формы плоского источника электрического поля, как решение интегрального уравнения Фредгольма - Урысона Нго рода. Проведён сравнительный анализ формы и результатов расчёта прямой задачи от точно заданной и приближённо найденной области.

The urgency of the discussed issue. Mining operations usually takes place in difficult geological conditions of disturbance of the host rock. Remote (from the surface), the preliminary determination of the location of such forced is a very important task to ensure the safety of mining operations. In addition, in the manufacture of underground mining area there are changes of the mechanical stresses which are the potential hotbed of mining and tectonic shocks. The location of these areas also increases the safety of mining operations. The main aim of study. Development of numerical algorithm and its software implementation to solve the inverse problem of restoration of shape of the source of electric field on the measured value of potential on the surface. The methods used in the study Methods of mathematical physics is to formulate the problem of recovering the shape of the source as an inverse, ill-posed problems the solution of inte-integral equations of the 1st kind. Methods of mathematical programming to create a numerical calculation scheme of approximate sequential restoring the shape of the field source. The results. The calculation of the magnitude of the electric field potential, generate daily test area is elliptical in shape, located in a three-layer fry de. Using the obtained values, we solved the inverse incorrect problems res tore-ing form flat electric fields, solution of integral equations of Fredholm Uryson 1-St kind. A comparative analysis of the form and calculation results of the direct problem from the exact and approximated found the field.

Keywords

Нелинейная некорректная обратная задача, интегральное уравнение Фредгольма- Урысона 1-го рода, методы регуляризации

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold