A fully concealed deep coalfield coal resource exploration method

Abstract

The invention discloses a totally-concealed deep coal field coal resource exploration method. According to the method, first, a stratigraphic texture profile map of a to-be-explored region is made, and a coal exploration target region is selected according to a coal indicator; second, apparent resistivity sounding is performed in the coal exploration target region, whether a coal measure stratum exists or not is judged based on apparent resistivity sounding curve characteristics, seismic exploration is carried out to obtain a seismic time profile, and the position of a coal seam is discriminated based on seismic reflected wave characteristics; and last, geophysical logging is performed, and the thickness of the coal seam is discriminated based on logging data. According to the method, apparent resistivity sounding, seismic reflected wave and digital logging indexes for recognizing the totally-concealed deep coal seam are proposed through a large amount of experimental research and exploration practice by regarding recognition of the coal seam deeply buried in a depressed basin as an objective based on an electrical method, seismic exploration and comprehensive logging, and geological and geophysical exploration organically-combined prospecting is realized. The method has the advantages that coal seam position determination is accurate, exploration depth is large, and the implementation effect is good.

Description

technical field [0001] The invention relates to the technical field of deep exploration of geological exploration, in particular to a method for exploring coal resources in deep coalfields fully concealed in depression basins. Background technique [0002] Coal is an important energy resource. In 2018, my country's coal consumption accounted for 59% of the country's total energy consumption. In Shandong Province, due to the intensive development of coal resources, the number of resource crisis mines is increasing year by year. Mining cities based on coal development, such as Zaozhuang, Zibo, and Jining, have become or are about to enter the ranks of resource-exhausted cities. Rapid growth is guaranteed. Therefore, finding replacement resources and carrying out the exploration and evaluation of fully concealed deep coal resources has become an inevitable choice to solve the resource crisis. [0003] According to geological analysis, the Yanggu-Chiping coalfield in the north...

AI Technical Summary

Problems solved by technology

However, because this area is a Mesozoic and Cenozoic strongly depressed area, the cap rock is thick, the geological structure is relatively complex, and the coal seam is deeply buried, so it is difficult to find ore

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