四角锥体护面块,近来还有扭工字体护面块,由于在陡坡上稳定性好,用料省,因而多用于深水防波堤或防波堤的深水段。仅是记录表明,所有毁于大风暴的防波堤,都有一个共同特点:使用了大量大尺度(形状细长)的护面块。 一、原因分析 大型细长护面块易于断裂,而且迅速蔓延,导致护面层大片流失,防波堤严重毁损。原因是多方面的: The quadrangular pyramid guard block has also recently been used in the deepwater breakwater or breakwater because of its good stability on steep slopes and the use of materials. Merely records show that all breakwaters destroyed by a large storm have one thing in common: they use a large number of large (elongated slender) hull blocks. First, the cause of analysis Large elongated guard block easy to break, and the rapid spread, resulting in large loss of surfacing, breakwater serious damage. There are many reasons: