Water-rich soft rock roadway roof supporting method

The invention discloses a water-rich soft rock roadway roof supporting method, and relates to the field of soft rock supporting. The problems that a roadway needs to be temporarily supported when bolt-grouting drilling is carried out on an anchor rod support, time and labor are wasted when an existing temporary support is manually built, and the temporary support device is prone to being deviated due to manual building, so that the supporting force is uneven are solved. A water-rich soft rock roadway roof supporting method comprises the following steps that firstly, the supporting distance is adjusted, supporting is applied to the two sides of a soft rock roadway, then supporting main frame bodies are in butt joint and self-locked, bolt grouting drilling is carried out, and finally anchoring construction and resetting are carried out. According to the supporting method for the roof of the water-rich soft rock roadway, time and labor are saved during supporting operation, supporting force is uniform through ce