Four-in-one construction method for directional long drilling of coal seam roof soft rock

The invention discloses a coal seam roof soft rock directional long drill hole four-in-one construction method which comprises the following steps: according to a directional long drill hole drilling mechanism and process parameters, referring to coal seam roof soft rock mechanical parameters and hydrological properties, and combining a directional long drill hole construction process; the four-in-one roof soft rock directional long drilling construction method integrates accurate judgment, low-speed disturbance reduction, drilling fluid enhancement, drilling while washing, empty-washing drilling and the like. Comprising the steps that lithology before drilling is accurately pre-judged in a staged mode by applying a ground exploration drilling histogram, a mine mining area mining face geological structure map, early directional drilling data information, directional drilling construction drilling machine working condition parameters and the like; the drilling speed is reduced so as to reduce the disturbance o