Modularized lightweight sound-proof wall and mounting method thereof

The invention relates to a modularized lightweight sound-proof wall and a mounting method thereof. The modularized lightweight sound-proof wall is characterized by comprising a supporting framework, wherein framework keels are arranged in the supporting framework; a protective facing pore plate is fixedly arranged on one side of the supporting framework, a back plate is fixedly arranged on the other side of the supporting framework, the protective facing pore plate and the back plate are arranged in parallel, and a sound-absorbing and sound-insulating structure is arranged between the protective facing pore plate and the back plate; the sound-absorbing and sound-insulating structure comprises a sound-insulating material plate arranged at the middle position of the supporting framework, and the sound-insulating material plate is parallel to the protective facing pore plate and the back plate; a sound-absorbing layer is formed between the sound-insulating material plate and the protective facing pore plate, and a sound-absorbing material is filled in the sound-absorbing layer; and a sound-insulating cavity is formed between the sound-insulating material plate and the back plate, and a sound-insulating structure layer is also arranged on the inner side of the back plate. The modularized lightweight sound-proof wall has efficient sound-absorbing capacity and sound-insulating capacity, can prevent the sound-insulating plate from initiating secondary noise by self vibration of the sound-insulating plate, can be modularized, and is convenient to mount and construct, so the modularized lightweight sound-proof wall can be widely used in various noise abatement projects with high requirement on sound-insulating capacity.