L型護岸後側的回填土主要為砂石，內摩擦角應大於35度。以較保守的30度

L型護岸後側的回填土主要為砂石，內摩擦角應大於35度。以較保守的30度計算，在地震為0.05W時，土壤主動破壞角約54度

結果 (英文) 1:

L revetment rear side of the main gravel backfill, internal friction angle should be greater than 35 degrees. 30 in more conservative calculation, when the earthquake is 0.05W, the destruction of soil active angle of about 54 degrees

結果 (英文) 2:

The backfill soil on the back side of the L-type shore is mainly sandstone, and the inner friction angle should be greater than 35 degrees. At a more conservative 30 degrees, the soil actively destroys an angle of about 54 degrees at an earthquake of 0.05W.

結果 (英文) 3:

The backfill behind L-type revetment is mainly sand and gravel, and the internal friction angle should be greater than 35 degrees. According to the conservative 30 degree calculation, when the earthquake is 0.05W, the active failure angle of soil is about 54 degrees