Gas pipeline hidden danger influence range analysis method and system based on digital twinning

The invention discloses a gas pipeline hidden danger influence range analysis method and system based on digital twinning, and relates to the technical field of gas pipeline hidden danger analysis, and the method comprises the steps: obtaining gas pipe data and water drainage pipe data based on a CIM model; a gas pipeline three-dimensional model is constructed according to the gas pipe data, a water affair drainage pipeline three-dimensional model is constructed according to the water affair drainage pipeline data, and the gas pipeline three-dimensional model and the water affair drainage pipeline three-dimensional model comprise attribute IDs of pipelines and pipe point objects; according to the attribute ID, attribute mapping hooking between the data and the three-dimensional model is carried out; generating a station three-dimensional model based on the gas pipeline three-dimensional model, the water affair drainage pipeline three-dimensional model and station environment data; and executing an accident mo