一、丁坝的性能与作用在河道与航道整治中,丁坝是经常采用的一种整治建筑物。在公路和铁路建筑中,丁坝也常用来作为桥渡调治建筑物和路基冲刷防护建筑物。丁坝在公路路基冲刷防护中起着重要的作用。采用丁坝防护路基冲刷的优点是防护长度大,相当于丁坝本身长度的3～10倍以上。采用丁坝配合其他路基冲刷防护建筑物,譬如挡墙、护坡、抛石、防水林与边坡植被加固等,将会更加合理和取得更为良好的综合防护经济效益。另外,采用丁坝防护路基冲刷,对于保证路基安全更为有利。当丁坝出现水毁时,如果及时进行抢险,将不会影响交通运输安全和造成运输经济上的损 First, the performance of the dam and role In the river and waterway regulation, the dam is often used as a renovation of buildings. In highway and railway construction, the Dingba is also commonly used as a bridge crossing to control buildings and roadbed erosion protection structures. Dingba plays an important role in roadbed erosion protection. Advantages of using embankment embankment erosion embankment protection is large, equivalent to the length of the dam itself 3 to 10 times longer. The use of dams and embankments with other scouring protection structures, such as retaining walls, slope protection, riprap, waterproofing and slope slope vegetation reinforcement, will be more reasonable and achieve a more comprehensive economic benefits of comprehensive protection. In addition, the use of embankment dam embankment erosion, to ensure more secure subgrade. When the dam dam appears water damage, if timely rescue, will not affect the safety of transport and transport economy caused damage