Fully soil-covered structure of vertical tank body

A fully soil-covered structure of a vertical tank body, which is arranged outside the vertical tank body, wherein the fully soil-covered structure comprises:

• a base layer, the base layer being arranged at a peripheral side of the vertical tank body and comprising a base material located on a ground floor, and a first filling gap being formed between a side, close to the vertical tank body, of the base layer and an outer wall of the vertical tank body;
• and
• a slope body filling soil, the slope body filling soil being arranged on the base layer, a second filling gap being formed between an inner side, close to the vertical tank body, of the slope body filling soil and the outer wall of the vertical tank body, and a side slope surface being formed on the outer side of the slope body filling soil;
• a buffering layer, the buffering layer filling the first filling gap and the second filling gap, the buffering layer comprising a buffering material filling the first filling gap and the second filling gap to wrap an outer surface of the vertical tank body, and the buffering layer having higher energy absorption efficiency than the slope body filling soil and being used for buffering a stress change between the vertical tank body and the slope body filling soil;
• and
• a size of the second filling gap in the radial direction of the vertical tank body is set to be gradually increased from bottom to top, so that an inverted circular truncated cone form is formed on the outer surface of the buffering layer corresponding to the second filling gap;
• an outer surface of the buffering layer in the inverted circular truncated cone form is provided with a generatrix, and an included angle of the generatrix relative to the vertical direction is not greater than 30°.