Geotextile and net rope structure construction method in the water

The invention discloses a construction method for the advancing in water of large earthwork fabrics and net rope structures. The technique utilizes a ship to fix an advancing position, lays bottom hooked ropes on the ship, spaces the bottom hooked ropes in a certain distance according to the depth and flow velocity of water, connects the bottom hooked ropes together by use of chain ropes so as toform a whole under uniform stress, lays an earthwork fabric on netlike ropes, and then uses a dump truck to dump soil and uses a bulldozer to push and advance earth into a large fabric. The construction method concretely comprises the following steps of fixing an advancing ship, erecting a keel, driving a pile, extending the bottom hooked ropes and the chain ropes, laying the earthwork fabric, pushing soil for advancing, laterally advancing and widening an advancing body. The construction method has the advantages of 1. manyfold reduced investment; 2. high speed; 3. ecological environment protection; 4. simple techniq