Study on Paleogene Rock Structure Characteristics and Integrated Water-resistance Performance in Yilan Mining Area

To understand the integrated water-resistance performance of rock in Yilan Mining Area, based on the geological mining conditions of Paleogene soft rock, complex structure, multiple coal seams and large mining depth in Yilan Mining Area, the methods of statistical analysis and laboratory tests were used to study the comprehensive characteristics, mechanical strength and water chemistry properties of overburden of the upper 1 and middle coal seams, and the type of overburden in coal seams were determined, and the comprehensive water-resistance performance was evaluated. The results show that the type of overburden of the upper 1 and middle coal seams belongs to the medium hard type, and the integrated water-resistance performance is good.