(一) 目前国内外格拦坝的主要类型及评价 泥石流防治工程建筑物分拦挡结构和排导结构两种。泥石流格拦坝兼有拦挡和排导两种功能,符合拦固相、排液相的泥石流沟的治理原则。改变格栏间距,就可以改变拦挡量和排泄量之间的比例。它是可调节的拦、排相结合的一种结构物。 (A) At present, the main types of grid dam at home and abroad and evaluation of debris flow prevention and control engineering building block structure and two kinds of drainage guide structure. Debris flow barrier both block and guide the two functions, in line with the blocking phase, drainage phase of the debris flow ditch governance principles. Change the grid spacing, you can change the blockage and the ratio between the amount of excretion. It is adjustable block, a combination of row structure.