SU636572A1 - Electric surveying method - Google Patents

Electric surveying method

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Publication number
SU636572A1
SU636572A1 SU772462065A SU2462065A SU636572A1 SU 636572 A1 SU636572 A1 SU 636572A1 SU 772462065 A SU772462065 A SU 772462065A SU 2462065 A SU2462065 A SU 2462065A SU 636572 A1 SU636572 A1 SU 636572A1
Authority
SU
USSR - Soviet Union
Prior art keywords
surveying method
electric
electric surveying
electromagnetic field
methods
Prior art date
Application number
SU772462065A
Other languages
Russian (ru)
Inventor
Вячеслав Леонидович Кейно
Original Assignee
Kejno Vyacheslav L
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kejno Vyacheslav L filed Critical Kejno Vyacheslav L
Priority to SU772462065A priority Critical patent/SU636572A1/en
Application granted granted Critical
Publication of SU636572A1 publication Critical patent/SU636572A1/en

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Description

1one

Изобретение относитс  к геоэлектроразведке методами вызванной пол ризации (ВП и стсиювлени  пол .This invention relates to geoelectrical exploration by methods of induced polarization (EP and stusive field.

Известны способы геоэлектроразведки(метод ВИ), основанные на возбуждении в горных лородах нестационарного электрома нитного нол  и измерении мгновенных значений потенциала ВП 1J.There are known methods of geoelectrical exploration (VI method), based on the excitation of non-stationary electro-magnetic zero in mountain alloys and the measurement of instantaneous values of the potential of VP 1J.

Эти способы имеют невысокую разрешаюидую способность.These methods have low solvability.

Согласно другому способу геоэлектроразведки 2, мгновенные значени  потенциала ВП измер ют дважды - после пропускани  импульсов носто нного тока в питающей линии и в цроцессе пропускани , а электромагнитное поле возбуждают импульсом тока увеличенной длительности. Ио разности напр жений ВП, возбуждаемых импульсами разной длительности, знаку и изменению во времени определ ют параметры объекта исследовани .According to another method of geoelectromagnetic exploration 2, the instantaneous potential values of the VP are measured twice — after passing pulses of a constant current in the supply line and in the transmission process, and the electromagnetic field is excited by a current pulse of increased duration. The parameters of the object of study are determined by the differences in the voltage of an EP generated by pulses of different duration, sign and time variation.

При этом начальное врем  измерени  напр жени  ВП выбирают таким, чтобы исключить искажающее вли ние индукционного эффекта, возникающего в питающей цени в моменты включени  или выключени  тока и затухающего во вре.мени по онределенному закону. При производстве геоэлектроразведочных работ методом ВП в районах с нровод щим разрезом, например в услови х развити  мощного че.хла низкоомных рыхлых отложений с проводимостью свыше 10 сим, измерить потенциалы 811 обычными способами из-за экранировани  юл ризующихс  объектов наносами и одновременного увеличени  а.мнлитуды и д,1ительности индукционного процесса с необходимой дл  практики точностью не удаетс .In this case, the initial measurement time of the voltage of the VP is chosen so as to eliminate the distorting effect of the induction effect that occurs in the supply value at the moments when the current is turned on or off and decays in time according to a certain law. In the production of geoelectrical exploration by the EP method in areas with a conductive incision, for example, under the conditions of the development of a powerful layer of low-resistance loose sediments with a conductivity of more than 10 sim, measure the potentials 811 by conventional methods due to the screening of sedimenting objects and the simultaneous increase in AMl. and d, the accuracy of the induction process with the necessary accuracy for practice is not successful.

Пель изобретени  - повышение разрешающей способности исследочаннй.Pel invention - improving the resolution of research.

Эта цель достигаетс  тем, что С1 гна;1ы электромагнитного пол  измер ют в моменты времени, одинаково отсто щие от переднего и заднего фронтов импульсов тока пропускани , и но алгебраической сумме измеренных сигналов суд т о пол ризуемости горных нород.This goal is achieved by the fact that the electromagnetic field of the electromagnetic field is measured at times that are equally distant from the front and rear edges of the transmission current pulses, and the algebraic sum of the measured signals is judged to be polarizable.

В силу линейности процессов становлени  составл юпи1С, обусловленные индхкционнымн эффектами, взаихию ущштожаютс , а в остатке регистрируют разность иотецциалои ВП.By virtue of the linearity of the processes of formation, the JupiCs, due to the in-formation effects, interrelate with each other, and the remainder and the difference between the total PT and EP are recorded.

SU772462065A 1977-03-14 1977-03-14 Electric surveying method SU636572A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU772462065A SU636572A1 (en) 1977-03-14 1977-03-14 Electric surveying method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU772462065A SU636572A1 (en) 1977-03-14 1977-03-14 Electric surveying method

Publications (1)

Publication Number Publication Date
SU636572A1 true SU636572A1 (en) 1978-12-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU772462065A SU636572A1 (en) 1977-03-14 1977-03-14 Electric surveying method

Country Status (1)

Country Link
SU (1) SU636572A1 (en)

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