Method for determining grain composition of huge-grain soil with ultra-large grain size

The invention discloses a method for determining grain composition of huge-grain soil with an ultra-large grain size. The method is suitable for various exposed huge-grain soil hydroelectric and hydraulic engineering and geotechnical projects. The method comprises the steps of measuring window logging, volume ratio calculation, sampling test and soil body composition parameter calculation. By presetting a division diameter (20cm), the particles are divided, and different measurement and calculation methods are adopted, so that the real composition parameters of the huge-grain soil are accurately solved. 本发明公开了一种确定含超大粒径巨粒土的颗粒级配的方法，适用于各种巨粒土出露的水电水利工程及岩土工程中。所述方法包括测窗编录、体积占比推算、取样试验、计算土体级配参数这些步骤。通过预设划分直径(20cm)，将颗粒进行划分并采用不同的测量计算方法，比较准确的求出巨粒土的真实级配参数。