Real-time monitoring method for offshore gravel pile construction

The invention discloses a real-time monitoring method for offshore gravel pile construction, which is based on a PLC (Programmable Logic Controller) monitoring system, and the PLC monitoring system comprises a GPS (Global Positioning System), a radar range finder, a weighing sensor, an encoder and a main controller. The invention discloses a real-time monitoring method for offshore gravel pile construction. The real-time monitoring method comprises the following steps that firstly, various parameters of gravel piles are input into a display screen of a main controller; secondly, when the pile pipe is vibrated into a soil layer by a certain depth, gravel materials of the two measuring hoppers are added into the pile pipe; thirdly, the pile pipe continues to be vibrated to the designed bottom elevation in the pressure holding state; step 4, carrying out end part treatment; fifthly, the pile pipe is lifted, when the height of the gravel materials in the pile pipe is smaller than 3-5 m, lifting of the pile pipe i