FIELD TESTS ON THE CONSTRUCTION PERFORMANCE AND STABILITY OF‘DRIM’

Abstract

The capability of DRIM (Distorted Ripple Mat) to control sediment transport has been confirmed through field tests. DRIM is installed in the offshore zone of Ashiya coast, Fukuoka Prefecture since June, 2004. As the result of field tests, it is confirmed that the method of connecting blocks of 6 pieces by a rope is quite effective to improve construction performance. It is also confirmed that DRIM blocks have enough stability against both waves and scours caused by many typhoons in 2004.