What does it mean that the fertilizer tank is filled with backfill soil?

Before excavation, backfill the excavation space to the ground. Fat trough soil is excavated according to the requirements of convenient construction. However, after backfilling, fertilizer pot soil will be left, and the remaining earthwork will be transported as civil garbage or used for other purposes.

Earthwork backfill is the fill of construction projects, mainly including foundation fill, foundation pit (trench) or trench backfill, indoor ground backfill, outdoor site backfill and so on.

It is used for backfill on both sides or around and above underground facilities (such as underground structures, ditches, pipe trenches, etc.). ), the underground engineering inspection first, after the acceptance formalities to backfill.

Extended data:

Construction method

(1) The thickness of flaky concrete is not less than 400 mm When pouring, spread a layer of concrete with a thickness of 8 ~ 15cm first, and then spread flaky. After inserting rubble into about half of the concrete, concrete should be poured and all gaps should be filled. Then lay rubble, and pour concrete layer by layer until the top surface of foundation is maintained, and the top of rubble should have a concrete protective layer with a thickness not less than 10cm.

The addition of crushed stone should be controlled within 25% of the basic volume. If rubble is placed in the reinforced concrete foundation, it can be hung on the steel bar with tie wires before pouring concrete.

(2) Rubble paving should be evenly arranged, with the big face down and the small face up. Rubble spacing is generally not less than 10 cm, and the distance from formwork or groove wall is not less than 15 cm.

(3) For stepped foundation, the pouring layer of each step should be divided into two rows of rubble, and the surface of each step should be basically flat; For conical foundation, attention should be paid to keep the slope of the inclined plane correct and smooth, and rubble should not be exposed on the concrete surface.

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