In the early 1980s, Chinese scholars Cui Hezheng began to introduce the CHIM method of the former Soviet Union to the geophysical and geochemical exploration community in China after attending the Asia-Pacific Geophysical Exploration Conference (1980). Gao Yunlong and others of Shenyang 240 Research Institute of Nuclear Industry began to absorb the research results of the former Soviet Union earlier and developed the instruments and equipment of this method. 1983 ~ 1984, they conducted an experimental study on geoelectric extraction methods for different types of uranium deposits in northeast China, and in 1985, they conducted gold prospecting tests in Xiaoyingpan gold mine in Zhangjiakou, Hebei Province and Malanyu placer gold mine in Zunhua, Hebei Province, all of which achieved good results. On the basis of 1989 incomplete statistics, at least 38 scientific research and production departments in China have carried out ore-prospecting experiments and applied technology research of geoelectric extraction methods to varying degrees .56656.66666666665 The systems of geology and mineral resources, nuclear industry, metallurgy and armed police gold force have been applied in polymetallic and gold mines successively, and good results have been achieved.
Fichequan (1992) absorbed some concepts in electrolysis technology, created a mode of high voltage, low current and long-time excitation, and developed a set of economic and rapid extraction theory and field operation technology suitable for field application.
Since the mid-1980s, Luo has taken the lead in the research of geochemical exploration technology for finding concealed deposits in China. For more than 20 years, the feasibility study of geochemical prospecting for typical deposits (bodies) with different burial depths, different minerals and different deposit types has been carried out in various thick-layer coverage areas of more than 30 mining areas in more than 20 provinces across the country. There are more than 500 test profiles with a total length of 100 km, and tens of thousands of test data have been obtained. There are more than ten kinds of minerals involved in the research, including gold, silver, copper, lead, zinc, tungsten, tin, arsenic and antimony. The genetic types of deposits include high-middle-low temperature hydrothermal deposits, sedimentary deposits, stratabound deposits, sedimentary transformation deposits, volcanic sedimentary metamorphic deposits and skarn deposits. A large number of experimental studies on the feasibility of prospecting show that almost all clear geochemical anomalies can be detected above deposits with different thickness, different minerals and different genesis. Various new methods have been applied to more than 20 unknown areas in 15 provinces in China, and more than 40 anomalies with metallogenic prospect have been found in the above-mentioned unknown areas, and 10 anomalies have been verified by deep engineering, among which 6 anomalies of industrial ore bodies have been seen. For example, in Yangcheng Pb-Zn mine area of Hubei Province, the predicted location target area has been drilled and verified, and it is concealed in the depth of100 m. In the northern belt of Jinwozi mining area of Xinjiang, the predicted location target area has been drilled and verified, and a 4.5m thick concealed gold ore body is seen more than 200 meters away. In order to verify the predicted target area, five boreholes were constructed in the survey area of Dali Factory, Xinlu, Guangxi, of which four boreholes all found concealed tin ore bodies at a depth of more than 200 meters. 1996 published the monograph "Geoelectrochemical Exploration and Deep Ore Prospecting", which made great contributions to the study of geoelectrochemical methods in China.
Liu Jimin and Liu Zhanyuan from the Institute of Geophysical and Geochemical Exploration of the Ministry of Geology and Mineral Resources have also done a lot of experiments and research. During the period of 1987 ~ 1989, geoelectric extraction tests were carried out in Karatongke copper-nickel mine, aktas gold mine and Sayi gold mine in Dolana. The results show that there are obvious anomalies in electro-extraction of copper, nickel and chromium above No.2 ore body with a buried depth of 200 ~ 400 m; There are also obvious anomalies of gold electrowinning above aktas gold mine and Sayi gold mine in Dolana.
In terms of prospecting effect and prediction, Liu Jimin and others conducted a detailed survey in the periphery of Yijin mining area in Dolana County, Xinjiang 10km2, and found many anomalies in geoelectric gold extraction. According to the engineering data provided by the Fourth Geological Team of Xinjiang in September 1988, the buried depth of the three drilled holes and four exploratory trenches has been tens of meters to hundreds of meters. 1989 carried out 22km2 scanning in Aksayi survey area in the north section of Sayi ore field in Dolana, Bhutto Bieshan survey area in the southwest section of ore field and west section of middle section, and found 12 industrial ore body with grade of1~ 7.63g/t.
Kimi and Lu Jun of China Geo University (Beijing) have made in-depth research on the theory of geoelectric extraction methods. Based on the basic electrochemical properties of electrolyte solution, according to the electric field distribution theory of conductor electrical method, taking homogeneous isotropic medium as an example, this paper discusses in detail the time required for ions to migrate for a certain distance in the point source current field and the related factors of the quality of substances extracted by electrodes (liquid and solid element receivers). On this basis, combined with the simulation experimental results of time-volume curve, the calculation methods of ion mobility, migration distance and migration concentration are given.
Pan He of the Armed Police Gold Research Institute has done a lot of exploration work on geoelectric extraction in gold exploration.
Tan Keren, from Changsha Institute of Structure, China Academy of Sciences, discovered new anomalies in the footwall of Longshan Au-Sb deposit 1 No.2 deposit in Xinshao County, Hunan Province by geoelectric extraction measurement and adsorption extraction measurement. After tunnel verification, he found a stable gold ore body with a thickness of 4m, a length of 100 m and a gold grade of 6g/t, and made a breakthrough in prospecting.