林区道路所经地段常常遇到发展期不同的塔头.在大小兴安岭地区勘测的线路中,据不完全统计,塔头地段约占线路长度的6-10%左右,个别地区多达20-30%.过去,对塔头的处理方法基本有两种:一是将路基基底的塔头全部清除;另一种是保留塔头(如反铺塔头就是其中一种).两种方法各有所长,但采用清除塔头,不仅使土方量增加,而且会使路基产生不稳定,尤其在冰冻地区更是如 According to incomplete statistics, the tower head section occupies about 6-10% of the total length of the line, and in some regions up to 20- 30%. In the past, there are basically two ways to deal with the tower head: one is to clear all the tower head of the subgrade base; the other is to keep the tower head (such as the anti-paving head is one of them) Have a director, but the removal of the tower head, not only to increase the amount of earthwork, but also make the roadbed instability, especially in the frozen areas is more like