Networked presplitting technology for high-position dirt band layer of extra-thick coal seam based on hydraulic fracturing

The invention discloses a networked presplitting technology for a high-position dirt band layer of an extra-thick coal seam based on hydraulic fracturing. The networked presplitting technology comprises the following steps that a top coal structure of a fully mechanized caving face is observed; top coal fracturing parameters of the fully mechanized caving face are determined; fracturing drilling construction and grooving are conducted on top coal of the fully mechanized caving face; the fully mechanized caving face fracturing drill hole is subjected to drill hole sealing; high-pressure hydraulic fracturing is performed on the top coal of the fully mechanized caving face; the hydraulic fracturing effect of the fully mechanized caving face is analyzed; the step of conducting fracturing drilling construction and slotting on the top coal of the fully mechanized caving face comprises the steps that a plurality of fracturing drilling holes perpendicular to the top face of the fully mechanized caving face are formed