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Gold Science and Technology ›› 2023, Vol. 31 ›› Issue (1): 78-87.doi: 10.11872/j.issn.1005-2518.2023.01.092

• Mineral Exploration and Resource Evaluation • Previous Articles     Next Articles

Application of High Density Resistivity Method in Environmental Geological Survey of Laizhou Mining Concentration Area

Ziyong LI(),Lifeng ZHANG,Haichuan TIAN,Xudong WANG   

  1. Yantai Center of Coastal Geological Survey，China Geological Survey，Yantai 264000，Shandong，China
  • Received:2022-07-15 Revised:2022-10-24 Online:2023-02-28 Published:2023-03-27

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Abstract:

After years of exploration and development，the surrounding environment of the gold mine in Laizhou ore concentration area has been changed and destroyed in varying degrees.In order to find out the environmental geological problems caused by Cangshang gold mine in Laizhou mining area，the high density resistivity method was applied to carry out section survey in the northeast side of Cangshang gold mine.The results of the investigation preliminarily identified the environmental geological problems，such as the stratigraphic geoelectric characteristics of the northeast side of Cangshang gold mine，the distribution of hidden fault structures and the underground goaf，and the extent of underground seawater intrusion.Through this investigation，the following insights have been gained：（1）The high density resistivity method can effectively identify the seawater intrusion in the northern part of Cangshang gold mine，and the seawater intrusion in the northern part of the mine is strong in the east and weak in the west.（2）The high density resistivity method can accurately identify the spatial distribution and structural water content of the hidden Sanshandao fault，which indicates that the Sanshandao fault slows down the seawater intrusion trend in Laizhou bay.（3）The high-density resistivity method can accurately identify the distribution range，strike，burial depth，water filling conditions and spatial morphology characteristics of the goaf.（4）The high density resistivity method can improve the working efficiency and is an effective method for environmental geological survey of ore concentration area，which can provide a good reference and guidance for environmental geological survey of similar areas.

Key words: high density resistivity method, environmental geological survey, goaf, seawater intrusion, Sanshandao fault, Laizhou mining area

CLC Number: 

  • P319.2

Fig.1

Sketch map of the northern part of the Laizhou mining area（modified after Liu et al.，2015）"

Fig.2

Schematic diagram of the working principle of the high-density resistivity method"

Fig.3

Schematic diagram of the geological plane of the work area"

Table 1

Statistics of section line layout"

测线编号测点数/个测线长度/m测线布置方向
GM0011601 600EW向
GM0021001 000EW向

Fig.4

Cross section of resistivity inversion of line GM001"

Fig.5

Inference map of resistivity inversion of line GM001"

Fig.6

Cross section of resistivity inversion of line GM002"

Fig.7

Inference map of resistivity inversion of line GM002"

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