Refined processing method for measurement data of geophysical prospecting instantaneous change electromagnetic system
A technology of systematic measurement and processing method, which is applied in the field of refined processing of measurement data of geophysical transient electromagnetic system, which can solve the problems of incomplete information, affecting the effect of transient electromagnetic system exploration, and cumbersome data processing process, etc.
Inactive Publication Date: 2015-04-08
TIANJIN HUAKAN GEOLOGICAL EXPLORATION CO LTD
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[0004] There are many problems in the current transient electromagnetic system data processing methods, such as: the data processing process is too cumbersome, only one component is processed at a time, the information is not comprehensive, and there are few or no parameters that directly reflect the electrical conductivity of underground geological bodies. , these have seriously affected the effect of transient electromagnetic system survey
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[0014] It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0015] According to the refined processing method of the measurement data of the geophysical transient electromagnetic system according to the embodiment of the present invention, a series of different delay times t are collected i The induced secondary field value V(t i ), get the detection depth H i and with H i The corresponding resistivity ρ i , time constant τ i , Conductivity S i as follows:
[0016] ρ i = μ 0 4 π t i ( 2 μ 0 Mq 5 ...
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The invention discloses a refined processing method for measurement data of a geophysical prospecting instantaneous change electromagnetic system. The method comprises the following steps: collecting a series of inducted secondary field values V(ti) of different delay time ti; obtaining the prospecting depth Hi, and the electrical resistivity rhoi, the time constant taui and the conductivity Si corresponding to the Hi as show in the specification, wherein i is a positive integer; the corresponding relationship between the meaning of each parameter and the unit is as follows: M is magnetic moment of a transmission wire frame; M=I / a / b; I is transmission current; a and b are edge lengths of the transmission wire frame; M is ampere / m<2>; I is ampere; a is m; b is m; q is dipole moment of a receiving coil; q=N / SR; N is turns per coil; SR is the area of the receiving coil; q is m<2>; N is unitless; SR is m<2>, mu0 is magnetic conductivity in vacuum; mu0=4phi*10<-7> henry / m; rho is ohm / m; tau is second; S is siemens; H is m. The refined processing method for the measurement data of the geophysical prospecting instantaneous change electromagnetic system disclosed by the invention is accurate in result and wide in application range.
Description
technical field [0001] The invention relates to the technical field of geological exploration, in particular to a method for refined processing of measurement data of a transient electromagnetic system for geophysical exploration. Background technique [0002] With the rapid development of the economy and society, the demand for mineral resources is increasing sharply, while the current resource reserves of many metal minerals are rapidly declining or drying up, and the contradiction of sustainable development is becoming increasingly prominent, so the effective ways and methods to resolve the contradictions fall on A major breakthrough in geological prospecting. At present, the situation of ore prospecting is becoming more and more serious. The surface outcrops and shallow buried ore bodies are becoming increasingly rare. It is imperative to conduct geological prospecting in the middle and deep areas, but the difficulty of finding ore in the middle and deep areas has double...
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IPC IPC(8): G01V3/38
Inventor蔡运胜李孝红杨学明李小永张进国胡建勇
OwnerTIANJIN HUAKAN GEOLOGICAL EXPLORATION CO LTD