目前在公路勘察工地上,一般以别茲露克修改了的费拉托夫式专用漏斗经淘洗后测定土壤颗粒组成的含砂量。这种方法既简便,又迅速,已被广泛采用。但因各地工作的仪器设备和操作方法不一(有的一次可淘洗6个漏斗,平行试验土样为三个;有的一次淘洗两个漏斗,平行试验土样为一个),生产效率不均衡,加以工作流动因而不能满足工作需要。为此介绍一种工地测定砂含量的分析方法如下: At present, on the road survey site, the Feratov-type special funnel, which is generally modified by Bezirok, is subjected to panning to measure the sand content of soil particles. This method is both simple and fast and has been widely adopted. However, due to different parts of the work of the equipment and methods of operation (some can be washed six funnels, parallel test soil samples for the three; some washing two funnels, parallel to a test soil sample), production efficiency Unbalanced, job mobility and therefore can not meet the needs of work. To this end, a site analysis method for the determination of sand content is as follows: