| 摘要 |
PURPOSE: A protection plate for preventing landslide is provided to prevent earth and sand from being collapsed when digging in the ground during road construction and/or building construction by having a number of protection plates inserted and secured between steel H beams stuck in the ground. CONSTITUTION: The protection plate comprises cross connection grooves(1-1) in rectangular form at bottom side(1-4) as closed; cross connection projections(1-2) at top side; and small hollowed holes(1-3) at equal spaces at top side. The plate is produced by admixing LDPE and HDPE generated from waste vinyl resins in agricultural areas, and calcium carbonate powders; entering the admixture in paste state in a metal cast to be under a first exclusion process and a second molding process with a hydraulic press. By such process, the obtained protection plate has tensile intensity more excellent than common synthetic resin materials.
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