| 摘要 |
FIELD: construction. ^ SUBSTANCE: method provides for taking sample blocks by a cylinder-sample block picker with the inner diameter D and the height H, with thickness of its wall h and angle of sharpening of its external cutting edge U. In soils enriched with a rock material, sample blocks are taken with a cutting cylinder-sample block picker with D=180Ç220 mm, H=D, h=3Ç4 mm and U=40Ç45. In soils with cracks, galleries of shrews, worms and root tubes of plants with D=180Ç220 mm, H=(0.8Ç1.0)D, h=1.5Ç3.0 mm and U=25Ç30. In soils with less developed cracks and single root tubes of plants with D=130Ç180 mm, H=(0.8Ç1.0)D, h=1.5Ç3.0 mm and U=25Ç30. In soils without cracks and other secondary pores, practically with no coarse soil with D=75Ç130 mm, H=(0.8Ç1.0)D, h=1.5Ç2.0 mm and U=25Ç30. When developing a calculation method to determine a filtration ratio, with D=180Ç220 mm, H=(0.8Ç1.0)D, h=1.5Ç3.0 mm and U=25Ç30. In all instances D does not exceed the capacity of a genetic horizon or a layer, from where a sample block is taken. ^ EFFECT: elimination of gross errors to determine a filtration ratio and water-physical properties of reclaimed soils and higher efficiency of mineral soils drainage. |
