WO2012169937A2 - Procédé de surveillance et de pronostic de déchirements dans la partie supérieure d'une coupe géologique - Google Patents

Procédé de surveillance et de pronostic de déchirements dans la partie supérieure d'une coupe géologique Download PDF

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Publication number
WO2012169937A2
WO2012169937A2 PCT/RU2012/000445 RU2012000445W WO2012169937A2 WO 2012169937 A2 WO2012169937 A2 WO 2012169937A2 RU 2012000445 W RU2012000445 W RU 2012000445W WO 2012169937 A2 WO2012169937 A2 WO 2012169937A2
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WIPO (PCT)
Prior art keywords
components
reference station
antennas
earth
transceiver devices
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Ceased
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PCT/RU2012/000445
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English (en)
Russian (ru)
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WO2012169937A3 (fr
Inventor
Михаил Михайлович ЗАДЕРИГОЛОВА
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Publication of WO2012169937A3 publication Critical patent/WO2012169937A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/087—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the earth magnetic field being modified by the objects or geological structures

Definitions

  • the invention relates to geophysics, in particular to low-frequency electromagnetic methods for studying the upper part of a geological section (VChR), intended for monitoring and predicting the stress-strain state (VAT) of a rock mass based on the study of variations of the Earth’s electromagnetic radio wave field (RPG). It can be used for revealing and contouring in profile surveys of local geoelectric heterogeneities (tectonic faults, flooded molds, karst cavities, landslide sections, areas of mine side jobs, increased fracturing, intervals of weakened rocks, etc.).
  • This invention can be specially used also when organizing a monitoring network for operational control of VAT in the areas of gas transmission systems in areas of activation of potentially dangerous geological processes (UCP). The results of such monitoring find practical application for an objective assessment and forecasting of the degree of risk, ensuring the safety of operation of critical gas facilities and timely management decisions.
  • Geodynamic active zones are indicators of potential sources of accidents and disasters, constant monitoring in real time of changes in VAT, for example, a landslide array, including gas pipelines, foundations of foundations of critical structures is an urgent task.
  • H z , H x , H y the total magnetic components in space and time (the z axis is vertical, the x axis, y axis in the horizontal plane, orthogonal to the z axis).
  • H z , H x , H y they mean the difference between the absolute values of the components at all ordinary measured i-th points of the surface and one reference point.
  • the magnetic component of the signal of the intensity of the Earth’s natural electromagnetic pulse field is measured along the production axis in three mutually perpendicular directions: longitudinal, transverse and vertical with a step of 1-5 m in the frequency range 150-200 kHz, and by the position of the anomalous zones on graphs judge the position of unloading zones or high rock pressure of the massif, due to both natural and technogenic factors. Measurements are carried out by one antenna of a radio wave indicator, which is rotated alternately in three mutually perpendicular positions.
  • the vertical component Hz of the intensity of the natural pulsed electromagnetic field of the Earth is additionally measured.
  • each of the transceiver devices, and Si and S 2 are the generalized electrical characteristics of the VChR in depth.
  • the basis of the present invention is the task of creating a method for monitoring local heterogeneities and geodynamic zones of the upper part of the geological section (VChR), which provides improved accuracy, information content, expansion of functionality not only by real-time determination of local heterogeneities of geodynamic nature in the VChR region, and also by providing a forecast of the appearance of discontinuous disturbances in the rocks in the areas of activation of the OGPR, and thus, those Niko-operational capabilities of the method.
  • VChR geological section
  • Figure 1 depicts an arrangement of transceivers with magnetic and electric antennas and a reference station for a section of a linear pipeline.
  • the method is implemented as follows.
  • transceiver devices 1 On the profile or site of research (Fig. 1), transceiver devices 1 are stationary installed, measuring electric E x , E y and magnetic H x , Well antennas, the electromagnetic field of the Earth. The same type of transceiver devices 1 reference station 2 is placed on the site, obviously free from geodynamic, geoelectric inhomogeneities, thereby compensating for the effects of natural and man-made interference.
  • the inputs / outputs of the transceiver devices 1 can be connected to the inputs and outputs of the processing device 3 by cable, radio channel or satellite communication, etc.
  • ⁇ is the frequency of oscillations of the magnetotelluric field at the central point of the productive region Af of the frequency range of short-period pulsed oscillations, where the main field parameters are monitored (1-200 kHz), and is the vacuum magnetic permeability.
  • the OGP control field material is a digital recording of the temporal sequences of the Earth's electromagnetic signals through four channels - N x , N y , and E x , E y .
  • the x axis corresponds either to the direction along the profile of the research when geo-mapping heterogeneities of geodynamic nature, or, with stationary monitoring, to the axes of preferential orientation of the tectonic elements.
  • the magnetic sensors H x , H of the transceiver devices 1 of the reference station 2 are two horizontal antennas with a narrow beam pattern;
  • the electrical sensors of the components E x , E y are two linear, located close to the earth's surface, isolated, orthogonally oriented antennas, grounded at the ends remote from the transceiver stations 1 and the reference station 2.
  • the measurement of the components H x , N y , E x , E y can be produced by the same transceiver devices 1.
  • the antennas receiving horizontal magnetic and electric components H x , N y , E x , E y mutually visually in space using geodetic theodolites along the research profile when geocarting heterogeneities of geodynamic nature, or along the axes of the preferred orientation of the tectonic elements.
  • Z] E X / H y
  • Z 2 E y / H x from the horizontal components H x , H y and E x , E y .
  • the latter are parameters for predictive interpretation, because by changing the ratios of the electric and magnetic components of the Earth's field (impedance) at different frequencies, we can study the change in the geoelectric section of the VChR in the vertical direction, and as a function of time at one point - the change in the VAT of the VChR.
  • Device 3 determines the values of electrical resistances p K i (Z l5 t) and ⁇ 2 ( ⁇ 2 , ⁇ ), by jumps of which, 5-7 times higher than the background values ⁇ ⁇ ⁇ , ⁇ ), ⁇ 2 ( ⁇ 2 , ⁇ ) are judged about the upcoming phase of explosive irreversible irregularities over a period of 1 to 15 days.
  • the time forecast interval depends on the structure of the upper part of the geological section (sand, clay, rocks, etc.).
  • the most successfully claimed method for monitoring and predicting discontinuous faults in the upper part of a geological section is industrially applicable for detecting and contouring in profile surveying of local geoelectric heterogeneities (karst cavities, old mine workings, basements, undermines, ceramic pipes, flooded troughs, etc.) and for operational stationary monitoring of VAT and forecasting impending explosive violations in the areas of gas transmission systems in areas of activation of dangerous geological, t hnogennyh processes (landslide areas submarine transitions podrabotok mountain zone, collapses et al.).

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Selon ce procédé, on mesure les composants magnétiques et électriques horizontales mutuellement orthogonales H(x), H(y), E(x) et E(y) de l'intensité du champ magnétique naturel de la Terre. On calcule dans un dispositif de traitement les valeurs des impédances Z(1)=E(x)/H(y) et Z(2)=E(y)/H(x). Sur la base de ces valeurs des impédances on détermine les variations dans le temps des résistances électriques ρk1(Z1,t) et ρk2(Z2,t) sur la base de brusques sursauts supérieurs à un quintuple des données de fonds mesurées préalablement ρf1(Z1,t), ρf1(Z2,t) et sur cette base on juge de l'arrivée d'une phase de déchirements dans la partie supérieure d'une coupe géologique dans un intervalle t de 24 heures à 15 jours.
PCT/RU2012/000445 2011-06-08 2012-06-07 Procédé de surveillance et de pronostic de déchirements dans la partie supérieure d'une coupe géologique Ceased WO2012169937A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2011123095 2011-06-08
RU2011123095/28A RU2461848C1 (ru) 2011-06-08 2011-06-08 Способ мониторинга и прогнозирования разрывных нарушений в верхней части геологического разреза

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WO2012169937A2 true WO2012169937A2 (fr) 2012-12-13
WO2012169937A3 WO2012169937A3 (fr) 2013-03-28

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PCT/RU2012/000445 Ceased WO2012169937A2 (fr) 2011-06-08 2012-06-07 Procédé de surveillance et de pronostic de déchirements dans la partie supérieure d'une coupe géologique

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RU (1) RU2461848C1 (fr)
WO (1) WO2012169937A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109039491A (zh) * 2017-06-09 2018-12-18 北京天江源科技有限公司 用于地质灾害监测的方法、系统、设备和存储介质
WO2019085384A1 (fr) * 2017-10-31 2019-05-09 北京科技大学 Procédé de positionnement d'une fissure principale de roche de charbon dans un précurseur de sinistre dynamique de roche de charbon au moyen d'un rayonnement électromagnétique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2148842C1 (ru) * 1997-11-06 2000-05-10 Леонид Абрамович Лозовский Способ радиолокационного зондирования и устройство "дифференциальный радар" для его осуществления
MY131017A (en) * 1999-09-15 2007-07-31 Exxonmobil Upstream Res Co Remote reservoir resistivity mapping
CA2468865A1 (fr) * 2001-12-03 2003-06-12 Shell Internationale Research Maatschappij B.V. Procede de determination de la resistivite anisotrope et de l'angle de chute dans une formation terrestre
RU2363964C1 (ru) * 2008-07-17 2009-08-10 Михаил Михайлович Задериголова Устройство для мониторинга локальных неоднородностей и геодинамических зон верхней части геологического разреза вчр
RU2363965C1 (ru) * 2008-07-17 2009-08-10 Михаил Михайлович Задериголова Способ мониторинга локальных неоднородностей и геодинамических зон верхней части геологического разреза вчр

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109039491A (zh) * 2017-06-09 2018-12-18 北京天江源科技有限公司 用于地质灾害监测的方法、系统、设备和存储介质
WO2019085384A1 (fr) * 2017-10-31 2019-05-09 北京科技大学 Procédé de positionnement d'une fissure principale de roche de charbon dans un précurseur de sinistre dynamique de roche de charbon au moyen d'un rayonnement électromagnétique
US11397236B2 (en) 2017-10-31 2022-07-26 University Of Science And Technology Beijing Method of locating coal-rock main fracture by electromagnetic radiation from precursor of coal-rock dynamic disaster

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Publication number Publication date
RU2461848C1 (ru) 2012-09-20
WO2012169937A3 (fr) 2013-03-28

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