Safe and stable pure steel slag roadbed filling method

The invention relates to the technical field of roadbed engineering, in particular to a safe and stable pure steel slag roadbed filling method, which comprises the following steps: firstly, arranging a 30-50cm transition layer or water seepage protection layer at the bottom of a roadbed of a fixed non-water seepage road section, filling steel slag according to grading requirements of different layers to form an embankment and a roadbed, and carrying out layered filling according to the full width of the cross section of the roadbed. Then, a vibratory roller and a self-propelled roller which meet the self-weight requirement are selected to be combined for rolling, compaction effect monitoring is conducted through the compaction degree and porosity indexes calculated through process settlement control, and after the compaction degree and porosity meet the requirements, clay is laid on the periphery of an embankment and the periphery of a roadbed, a slope protection is formed, and roadbed filling is completed. A