Directional long drilling construction method and large-area regionalization arrangement method for broken, soft and complex-structure coal seam

The invention provides a directional long drilling construction method and a large-area regionalization arrangement method for a broken and soft coal seam with a complex structure, belongs to the technical field of gas extraction of the broken and soft coal seam with the complex structure, and mainly solves the problem that large-area long-distance extraction of the broken and soft coal seam with the complex structure cannot be realized at present. And the gas extraction efficiency of the broken soft complex coal seam is improved. According to the technical scheme, high-power large-torque automatic directional drilling equipment is selected, a proper drilling tool, a proper punching tool, a proper hole protecting tool and the like are matched, a coal seam trend probing hole (also serving as an extraction hole) and a pressure relief anti-reflection extraction main hole are constructed in a regional coal seam, and a large-diameter screen pipe protection hole is implemented; and large-area long-distance drill ho