It is made of high-strength HDPE wide belt through mighty welding in cellular structure. It is greatly flexible. It can be folded for transportation and extended for filling earth and stone or concrete material to form a large rigid structure with mighty lateral confinement. It can be used as the underlayer to support the increscent load of weak ground, or laid on sloping surfaces to form sloping surface safeguard structure, or used as support structure. It is convenient and prompt in construction.