CN111427092A - Method for improving geophysical prospecting electrical deep field construction efficiency - Google Patents
Method for improving geophysical prospecting electrical deep field construction efficiency Download PDFInfo
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- 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
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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
- G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
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Abstract
The invention provides a method for improving the efficiency of geophysical prospecting deep field construction, which comprises the following steps: laying depth measuring points and making a polar distance table; and respectively arranging power supply electrodes and receiving electrode distances at two sides of the measuring points along the section direction according to the values of the power supply electrode distance AB/2 and the receiving electrode distance MN/2 in the electrode distance table until the measurement work of all the measuring points is completed. The invention only needs to complete one-time arrangement of large polar distance, namely the power supply and receiving polar distance with the power supply polar distance AB/2 more than 65 meters, and circularly and roll measurement is carried out on the section according to the designed polar distance table, thus reducing the moving distance of the electrode arrangement compared with the original method for completing all measuring points, reducing the moving distance of the electrode arrangement personnel in the arrangement process of the power supply electrode AB, shortening the electrode arrangement time, greatly lightening the working strength of the electrode arrangement personnel, obviously improving the working efficiency, ensuring the field construction progress, and further being beneficial to the smooth completion of the expected task.
Description
Technical Field
The invention relates to the technical field of geological exploration, in particular to a method for improving geophysical prospecting deep field construction efficiency.
Background
The electrical sounding comprises resistivity sounding, induced polarization sounding and the like, and is widely applied to the fields of geological exploration, engineering exploration and the like as a geophysical prospecting method capable of displaying the two-dimensional earth electrical structural form in the depth direction on a section. The field measurement is carried out on the symmetrical quadrupole device in a depth measuring mode by using a plurality of sets of combined power supply electrode distances and receiving electrode distances point by point (see table 1 in detail, the electrode distance table can be changed according to actual conditions, and the maximum AB/2 power supply electrode distance can also be increased), and the detection depth of the depth measuring method is deeper along with the increase of the power supply electrode distances.
TABLE 1 electric deep power supply and receiving polar distance arrangement change table
| AB/2 | 6.0 | 9.0 | 15 | 25 | 40 | 40 | 65 | 65 | 100 | 150 | 220 | 220 | 340 |
| MN/2 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 12 | 3.0 | 12 | 12 | 12 | 12 | 40 | 12 |
| AB/2 | 340 | 500 | 750 | 1000 | 1500 | ||||||||
| MN/2 | 40 | 40 | 40 | 40 | 40 |
The original field working method for depth measurement of the symmetrical quadrupole device comprises the following steps of;
1. connecting a power supply electrode AB and a measuring station and paying off to the measuring point, respectively arranging the power supply electrode and a receiving electrode on two sides of the measuring point along the section direction according to AB/2 and MN/2 values in the table 1, starting power supply and measurement by the measuring station after the arrangement is finished, and gradually changing AB/2 and MN/2 according to the table 1 to measure after the measurement is finished until the maximum AB/2 in a polar distance table is measured to be 1500 m polar distance, and finishing the measurement of the measuring point.
2. And moving the measuring point distance along the section direction AB and MN simultaneously to reach a new measuring point, wherein AB/2 and MN/2 are respectively 1500 m and 40 m in the table 1, starting measurement after arrangement, gradually changing AB/2 and MN/2 according to the table 1 for measurement, and completing the measuring point measurement until the minimum AB/2 in the polar distance table is measured to be 6 m.
3. And moving AB and MN again according to the point distance of the measuring point to reach a new measuring point, and measuring the measuring point according to the step 1.
4. Moving AB and MN according to the measuring point distance to reach a new measuring point, and measuring the measuring point according to the step 2.
5. And repeating the steps until all the measuring points are measured.
The method needs to perform the conversion of all the power supply polar distances and the receiving polar distances in the polar distance table by subtracting the number of the measuring points, the working efficiency is low, meanwhile, the working intensity of pole arrangement personnel is greatly increased, the field construction progress cannot be guaranteed, and the smooth completion of the expected task is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for improving the efficiency of geophysical prospecting deep field construction.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for improving the efficiency of geophysical prospecting deep field construction is characterized by comprising the following steps:
(1) laying depth measuring points according to the actual situation of the field for depth measurement, and formulating a polar distance table comprising a plurality of groups of power supply polar distances AB/2 and receiving polar distances MN/2;
(2) when the power supply polar distance AB/2 is more than 65 meters, connecting a power supply electrode AB of the symmetrical quadrupole device with a measuring station and paying off to the measuring point, respectively arranging power supply electrode and receiving polar distance on two sides of the measuring point along the cross section direction according to the values of the power supply polar distance AB/2 and the receiving polar distance MN/2 in the polar distance table in the step (1), starting power supply and measurement by the measuring station after arrangement, and gradually changing the power supply polar distance AB/2 and the receiving polar distance MN/2 according to the polar distance table in the step (1) to measure until the maximum power supply polar distance AB/2 in the polar distance table is measured, so that the measuring point measurement is completed;
(3) the power supply electrode AB and the receiving electrode MN move the measuring point distance simultaneously along the positive direction of the section to reach a new measuring point, at the moment, the power supply electrode AB/2 and the receiving electrode MN/2 are respectively the maximum power supply electrode distance AB/2 and the receiving electrode distance MN/2 corresponding to the maximum power supply electrode distance in the pole distance table, measurement is started after arrangement is finished, the measuring point distance measurement is finished, the power supply electrode AB and the receiving electrode MN move the measuring point distance simultaneously to reach the new measuring point, the pole distance measurement of the new measuring point, which is the same as the maximum power supply electrode distance AB/2 and the receiving electrode distance MN/2 corresponding to the maximum power supply electrode distance AB/2, is finished, and the measurement of all measuring points, the maximum power supply electrode distance AB/2 and the receiving electrode distance MN/2 corresponding to the maximum power supply electrode distance AB/2 is finished according to the method;
(4) converting the power supply polar distance AB/2 into a second large power supply polar distance AB/2 in the polar distance table, and converting the receiving polar distance MN/2 into a receiving polar distance MN/2 corresponding to the second large power supply polar distance AB/2 in the polar distance table to finish the measurement of the measuring point; moving the measuring point distances along the opposite directions AB and MN of the section to a new measuring point, and completing the measurement of the pole distance between the new measuring point and the second-largest power supply pole distance AB/2 and the pole distance measurement which is the same as the receiving pole distance MN/2 corresponding to the second-largest power supply pole distance AB/2, and completing the measurement of the pole distances between all the measuring points and the largest power supply pole distance AB/2 and the receiving pole distance MN/2 corresponding to the second-largest power supply pole distance AB/2 by the method, gradually reducing the power supply pole distances AB/2 and completing the corresponding pole distance measurement according to the method until completing the pole distance measurement of the receiving pole distance MN/2 corresponding to the power supply pole distance AB/2 which is more than the middle pole distance in the pole distance table;
(5) and when the power supply electrode distance AB/2 is less than 65 meters, completing the electrode distance measurement work of the power supply electrode distance AB/2 point by point according to the original observation method until finishing the measurement work of all measuring points.
Preferably, the power supply electrode AB is connected to an external power supply system.
Preferably, the receiving electrode MN is connected to an external receiving system.
Preferably, the distance moved by the power supply electrode AB is the product of the difference between the power supply electrode distance AB/2 equal to or greater than the middle pole distance and the point distance of the measuring point subtracted by 1.
The invention has the beneficial effects that: the invention provides a method for improving the efficiency of geophysical prospecting deep field construction, which only needs to complete one-time arrangement of a large polar distance, namely a power supply polar distance AB/2 which is more than 65 meters, and performs circular rolling measurement according to a designed polar distance table on a section, thereby reducing the moving distance of an electrode arrangement compared with the original method for completing all measuring points, reducing the moving distance of electrode arrangement personnel in the process of arranging the power supply electrode AB, shortening the electrode arrangement time, greatly lightening the working strength of the electrode arrangement personnel, obviously improving the working efficiency, ensuring the field construction progress, and further being beneficial to the smooth completion of the expected task.
Drawings
FIG. 1 is a field construction flow chart of depth measurement of an original single-point symmetric quadrupole device;
FIG. 2 is a flow chart of field construction for depth measurement of an original symmetric quadrupole device;
FIG. 3 is a field depth measurement flow chart of the symmetric quadrupole device of the present invention;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The invention is further illustrated by the following examples:
a method for improving the efficiency of geophysical prospecting deep field construction is characterized by comprising the following steps:
(1) laying depth measuring points according to the actual situation of the field for depth measurement, and formulating a polar distance table comprising a plurality of groups of power supply polar distances AB/2 and receiving polar distances MN/2;
(2) when the power supply polar distance AB/2 is more than 65 meters, connecting a power supply electrode AB of the symmetrical quadrupole device with a measuring station and paying off to the measuring point, respectively arranging power supply electrode and receiving polar distance on two sides of the measuring point along the cross section direction according to the values of the power supply polar distance AB/2 and the receiving polar distance MN/2 in the polar distance table in the step (1), starting power supply and measurement by the measuring station after arrangement, and gradually changing the power supply polar distance AB/2 and the receiving polar distance MN/2 according to the polar distance table in the step (1) to measure until the maximum power supply polar distance AB/2 in the polar distance table is measured, so that the measuring point measurement is completed;
(3) the power supply electrode AB and the receiving electrode MN move the measuring point distance simultaneously along the positive direction of the section to reach a new measuring point, at the moment, the power supply electrode AB/2 and the receiving electrode MN/2 are respectively the maximum power supply electrode distance AB/2 and the receiving electrode distance MN/2 corresponding to the maximum power supply electrode distance in the pole distance table, after the arrangement is finished, the measurement is started to finish the measurement of the pole distance of the measuring point, the power supply electrode AB and the receiving electrode MN move the measuring point distance simultaneously to reach the new measuring point, the measurement of the new measuring point and the maximum power supply electrode distance AB/2 and the receiving electrode distance MN/2 corresponding to the maximum power supply electrode distance AB/2 is finished, and the measurement of the pole distances of all measuring points and the maximum power supply electrode distance AB/2 and the receiving electrode distance MN/2 corresponding to the maximum power supply electrode distance AB/2 is finished by the method;
(4) converting the power supply polar distance AB/2 into a second large power supply polar distance AB/2 in the polar distance table, and converting the receiving polar distance MN/2 into a receiving polar distance MN/2 corresponding to the second large power supply polar distance AB/2 in the polar distance table to finish the measurement of the measuring point; moving the measuring point distances along the opposite directions AB and MN of the section to a new measuring point, and completing the measurement of the pole distance between the new measuring point and the second-largest power supply pole distance AB/2 and the pole distance measurement which is the same as the receiving pole distance MN/2 corresponding to the second-largest power supply pole distance AB/2, and completing the measurement of the pole distances between all the measuring points and the largest power supply pole distance AB/2 and the receiving pole distance MN/2 corresponding to the second-largest power supply pole distance AB/2 by the method, gradually reducing the power supply pole distances AB/2 and completing the corresponding pole distance measurement according to the method until completing the pole distance measurement of the receiving pole distance MN/2 corresponding to the power supply pole distance AB/2 which is more than the middle pole distance in the pole distance table;
(5) and when the power supply electrode distance AB/2 is less than 65 meters, completing the electrode distance measurement work of the power supply electrode distance AB/2 point by point according to the original observation method until finishing the measurement work of all measuring points.
Preferably, the power supply electrode AB is connected to an external power supply system.
Preferably, the receiving electrode MN is connected to an external receiving system.
Preferably, the distance moved by the power supply electrode AB is the product of the difference between the power supply electrode distance AB/2 equal to or greater than the middle pole distance and the point distance of the measuring point subtracted by 1.
Examples
A method for improving the efficiency of geophysical prospecting deep field construction comprises the following steps:
(1) laying depth measuring points according to the actual situation of the field for depth measurement, and making a polar distance table comprising a plurality of groups of power supply polar distances AB/2 and receiving polar distances MN/2, as shown in table 1;
(2) when the power supply polar distance AB/2 is more than 65 meters, connecting a power supply electrode AB of the symmetrical quadrupole device with a measuring station and paying off to a measuring point, respectively arranging the power supply electrode and a receiving electrode on two sides of the measuring point along the section direction according to the values of AB/2 and MN/2 in the table 1, starting power supply and measurement of the measuring station after the arrangement is finished, and gradually changing AB/2 and MN/2 according to the table 1 for measurement after the measurement is finished until the maximum AB/2 in the polar distance table is measured to be 1500 meters of polar distance, and finishing the measurement of the measuring point;
(3) moving the measuring point distance along the positive direction AB and MN of the section simultaneously to reach a new measuring point, wherein AB/2 and MN/2 are respectively 1500 m and 40 m in the table 1, starting measurement after arrangement is finished, completing the measurement of the polar distance of the measuring point, moving the measuring point distance along the direction AB and MN of the section simultaneously to reach the new measuring point, completing the measurement of AB/2 of the new measuring point which is 1500 m and MN/2 which is 40 m, and completing the measurement of all the measuring points AB/2 which is 1500 m and MN/2 which is 40 m;
(4) the distance between the power supply electrode and the receiving electrode is changed into AB/2 which is 1000 meters, MN/2 which is 40 meters, the measurement of the measuring point is completed, the distance between the measuring point and the MN is moved along the opposite direction of the section, the new measuring point is reached, the measurement of the distance between the AB/2 which is 1000 meters and the MN/2 which is 40 meters of the new measuring point is completed, and the measurement of the distance between the AB/2 which is 1000 meters and the MN/2 which is 40 meters of all the measuring points is completed by analogy; gradually reducing the power supply polar distance according to the method and completing the corresponding polar distance measurement until AB/2 is completed as 100 meters of polar distance measurement;
(5) according to the original observation method, the polar distance measurement work of AB/2-65 m and MN/2-3 m is finished point by point until all the measurement points are finished.
And the power supply electrode AB is connected with an external power supply system.
And the receiving electrode MN is connected with an external receiving system.
The moving distance of the power supply electrode AB is the product of the difference value of the power supply electrode distance AB/2 above the middle pole distance and the difference of the point distance of the measuring point subtracted by 1 from the number of the point of the measuring point.
The invention has been described in an illustrative manner, and it is to be understood that the invention is not limited to the specific embodiments described above, but is intended to cover various modifications, which may be made by the methods and technical solutions of the invention, or may be applied to other applications without modification.
Claims (4)
1. A method for improving the efficiency of geophysical prospecting deep field construction is characterized by comprising the following steps:
(1) laying depth measuring points according to the actual situation of the field for depth measurement, and formulating a polar distance table comprising a plurality of groups of power supply polar distances AB/2 and receiving polar distances MN/2;
(2) when the power supply polar distance AB/2 is more than 65 meters, connecting a power supply electrode AB of the symmetrical quadrupole device with a measuring station and paying off to the measuring point, respectively arranging power supply electrode and receiving polar distance on two sides of the measuring point along the cross section direction according to the values of the power supply polar distance AB/2 and the receiving polar distance MN/2 in the polar distance table in the step (1), starting power supply and measurement by the measuring station after arrangement, and gradually changing the power supply polar distance AB/2 and the receiving polar distance MN/2 according to the polar distance table in the step (1) to measure until the maximum power supply polar distance AB/2 in the polar distance table is measured, so that the measuring point measurement is completed;
(3) the power supply electrode AB and the receiving electrode MN move the measuring point distance simultaneously along the positive direction of the section to reach a new measuring point, at the moment, the power supply electrode AB/2 and the receiving electrode MN/2 are respectively the maximum power supply electrode distance AB/2 and the receiving electrode distance MN/2 corresponding to the maximum power supply electrode distance in the pole distance table, after the arrangement is finished, the measurement is started to finish the measurement of the pole distance of the measuring point, the power supply electrode AB and the receiving electrode MN move the measuring point distance simultaneously to reach the new measuring point, the measurement of the new measuring point and the maximum power supply electrode distance AB/2 and the receiving electrode distance MN/2 corresponding to the maximum power supply electrode distance AB/2 is finished, and the measurement of the pole distances of all measuring points and the maximum power supply electrode distance AB/2 and the receiving electrode distance MN/2 corresponding to the maximum power supply electrode distance AB/2 is finished by the method;
(4) converting the power supply polar distance AB/2 into a second large power supply polar distance AB/2 in the polar distance table, and converting the receiving polar distance MN/2 into a receiving polar distance MN/2 corresponding to the second large power supply polar distance AB/2 in the polar distance table to finish the measurement of the measuring point; moving the measuring point distances along the opposite directions AB and MN of the section to a new measuring point, and completing the measurement of the pole distance between the new measuring point and the second-largest power supply pole distance AB/2 and the pole distance measurement which is the same as the receiving pole distance MN/2 corresponding to the second-largest power supply pole distance AB/2, and completing the measurement of the pole distances between all the measuring points and the largest power supply pole distance AB/2 and the receiving pole distance MN/2 corresponding to the second-largest power supply pole distance AB/2 by the method, gradually reducing the power supply pole distances AB/2 and completing the corresponding pole distance measurement according to the method until completing the pole distance measurement of the receiving pole distance MN/2 corresponding to the power supply pole distance AB/2 which is more than the middle pole distance in the pole distance table;
(5) and when the power supply electrode distance AB/2 is less than 65 meters, completing the electrode distance measurement work of the power supply electrode distance AB/2 point by point according to the original observation method until finishing the measurement work of all measuring points.
2. The method for improving the efficiency of geophysical prospecting deep field construction according to claim 1, wherein the power supply electrode AB is connected with an external power supply system.
3. The method for improving the efficiency of geophysical prospecting deep field construction according to claim 1, wherein the receiving electrode MN is connected with an external receiving system.
4. The method for improving the outdoor construction efficiency of geophysical prospecting depth according to claim 1, wherein the moving distance of the power supply electrode AB is the product of the difference of the power supply electrode distance AB/2 above the middle pole distance and the point distance of the measuring point subtracted by 1.
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