Gabion

Bastion Wall Profile
The bastion Wall also called defense barrier, defense wall, sand cage, welded gabion box.
It is a prefabricated,multi-cellular system, made of zinc coated steel welded mesh and lined with non-woven geotextile.it replaces the conventional fortifications to defend personnel against fires and projectile shards, it will be made of geotextile bags wrapped by galvanized gabions. 
It is easy installed with using minimal manpower and commonly available equipment. After extended,it is filled into sand,stone, It is made of a collapsible wire mesh container and heavy duty fabric liner, it can be used in separate cell or some cells join together.