Geogrid combined grouting electro-osmosis construction method for ultra-soft soil

The invention discloses a geogrid combined grouting electro-osmosis construction method for ultra-soft soil. The geogrid combined grouting electro-osmosis construction method for ultra-soft soil comprises the following steps: carrying out hydraulic reclamation of mud soil by using hydraulic reclamation construction machinery, performing reinforcement on the mud soil layer at the surface layer of the mud by using a geogrid, and paving geotextile on the surface layer; arranging grouting iron pipes as a positive electrode and a negative electrode; connecting a grouting pump and a horizontal grouting guide pipe by means of a connecting valve, and connecting the horizontal grouting guide pipe with top ends of the grouting iron pipes of the positive electrode and the negative electrode; arranging a drainage main pipe and pumping equipment in an ultra-soft soil place on one side where the cathode is arranged; and switching on the power for electro-osmosis. The geogrid combined grouting electro-osmosis construction method for ultra-soft soil is capable of changing the present situation of separation of electrodes and soil mass, effectively increasing the effective electric potential at the later stage of electro-osmosis, increasing the overall current intensity, and also correspondingly increasing the drainage rate; compared with treating ultra-soft soil by using a conventional electro-osmosis method, the integrity of the soil mass is enhanced by the geogrid, and the efficiency at the later stage of electro-osmosis is improved by the grouting technology; in addition, by means of void filling, differential settlement can also be effectively reduced.