A SAND MAT EXECUTION METHOD ACCORDING TO THE CAUSE THAT CAN MAKE SAND REDUCTION THROUGH UNNECESSARY SECTION REDUCTION FOR IMPEACHMENT

摘要

A construction method of a sand mat for a road bank is provided to prevent subsidence by the banking load when constructing a road on the soft ground, to approach drain equipment for promoting the consolidation of the soft ground effectively, to cut down on the cost of construction by reducing the unnecessary cross section of a sand mat, to promote bearing capacity effectively by varying the particle size and the shape of the contents of sand mats, and to reduce sand by reducing an unnecessary cross section. A construction method of a sand mat for a road bank capable of reducing sand by a reduction of an unnecessary cross section comprises the steps of: forming a central sand mat(100a) located on the lower part of the center(c) of a bank with sand(102) of 0.25~5mm, and spreading horizontally to the appointed thickness; and forming a border sand mat(100b) located on the lower part of the slope of a bank with sand(104) of 1~2mm, and spreading to make the top lower toward the edge.