Method and device for direct current detection of underground wells with lateral power supply
A technology of direct current method and detection method, which is applied in the field of geophysical exploration, can solve problems such as difficult implementation and huge system, and achieve the effect of high transmission power and improved detection effect
Active Publication Date: 2020-09-25
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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Problems solved by technology
The system involved in this invention is too large and difficult to implement in actual engineering. The measuring electrodes are located in vertical holes or roadways, and horizontal holes are not involved. In addition, it does not use different power supply-measurement combinations to judge abnormal azimuths
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[0034] In this embodiment, firstly, a detection method of earth well direct current method with lateral power supply is provided. Combine below figure 1 - Figure 4 details the method.
[0035] figure 1 A schematic diagram of a detection method and device of a ground well direct current method with lateral power supply is illustrated. like figure 1 As shown, in this embodiment, two power supply electrodes named A and B are arranged on the ground, respectively connected to the power supply electrode named C at infinity to form two sets of power supply electrodes AC and BC. The electrodes (AC, BC) are respectively connected with the power supply equipment to form two sets of power supply systems, and the projection positions of the two power supply electrodes (A, B) are respectively located on both sides of the measuring line.
[0036] like figure 1 As shown, in this embodiment, the receiving measuring line is arranged in the underground roadway or borehole, and the receivin...
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The invention relates to an electrical detection method and a device, belonging to the technical field of geophysical exploration, in particular to a laterally powered ground well direct current detection method and a device. The invention establishes a stable DC electric field on the ground power supply electrodes, and uses the potential difference signals generated by different electrodes at the survey line to judge the orientation of the abnormal body relative to the survey line; the potential difference signal collected by the present invention includes the surrounding resistivity abnormal geological bodies The information, processing and analysis of the overall data of the survey line can realize the detection of the target body. The invention utilizes the advantages of large transmission power of the ground electrode and various observation systems, and the close distance between the underground receiving electrode and the abnormal body, and can improve the detection effect.
Description
technical field [0001] The invention relates to an electrical detection method and a device, belonging to the technical field of geophysical exploration, in particular to a laterally powered ground well direct current detection method and a device. Background technique [0002] The direct current method is based on the difference in electrical conductivity of rocks and ores in the earth's crust, and is an exploration method for finding minerals and solving geological problems by observing and studying the artificially established distribution of direct current electric fields. The conventional direct current method can be divided into ground high-density electric method and mine high-resolution electric method according to the construction environment. The construction environment of the ground high-resolution electric method is the ground. Distribution of underground resistivity. The construction environment of mine high-resolution direct current method is the mine roadway...
Claims
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IPC IPC(8): G01V3/26
CPCG01V3/26
Inventor 王鹏冯宏李明星姚伟华苏超
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP