Abstract
Geophysical exploration wells during the exploration of coal deposits solve many geological problems. Among them: the lithological section subdivision, allocation of coal seams, the definition of the depth of their occurrence and the angles of incidence breeds, the definition of power, structure, ash, coal quality characteristics, determination of synonymy coal seams, and others. Data of GSW used in the calculation of coal reserves in the field. Precision geophysical definition of physical and mechanical properties of rocks is estimated by comparing the results obtained with the data of GSW, and rock samples in the laboratory.Geophysical surveys of boreholes are used to solve the following geological problems: lithological dissection of the section; allocation of coal seams and determination of their depth; determining the thickness, structure and ash content of coal seams, as well as determining the characteristics of coal quality; highlighting tectonic faults in borehole sections, determining their type and amplitude; determination of hydrological operating conditions, study of the temperature and gas regime of rocks, technical condition of boreholes.In addition, GIS data is used to calculate the explored coal reserves.Interpretation of geophysical data is the clarification and explanation of the information received regarding the geology of the site and the physical and mechanical properties of the object. Interpreting geophysical data is challenging. Its solution is of great practical importance for the prospecting and exploration of mineral deposits. The article provides an overview of some of the existing methods of determining the ash content of coal on the results of GSW and forecast geological conditions of coal mining.