A fertilizer trench backfilling structure

CN224281305UActive Publication Date: 2026-05-26BEIJING FANGXIUYI CONSTR ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING FANGXIUYI CONSTR ENG CO LTD
Filing Date
2025-03-31
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In narrow and deep trenches, traditional plain soil backfilling construction is difficult to guarantee quality, and the tight schedule affects the smooth progress of basement structure, waterproofing, and the removal of steel beams between slope protection piles.

Method used

The structure adopts a wall layer and a filling layer set on the outside of the slope protection piles. A filling space is formed between the wall layer and the slope protection piles. The filling layer is at the same height as the wall layer and is covered with a waterproof layer and a protective layer to prevent water seepage. Combined with the masonry technology of solid coal gangue bricks or aerated concrete block walls, expansion bolts and tie bars are used to improve stability.

Benefits of technology

This improved the quality of backfilling trenches, ensured simultaneous construction of basement structure and waterproofing, saved time and costs, and avoided the difficulty in guaranteeing the quality and process interference of traditional plain soil backfilling.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224281305U_ABST
Patent Text Reader

Abstract

This utility model discloses a trench backfill structure, relating to the field of building engineering technology, comprising: a wall layer laid on the outside of the slope protection piles, extending along the height direction of the slope protection piles, with a filling space between the wall layer and the slope protection piles; a filling layer laid in the filling space and adhering to the wall layer and the slope protection piles, with the filling layer and the wall layer laid at the same height; and a waterproof layer and protective layer interface covering the side of the wall layer facing away from the filling layer. Compared with traditional plain soil backfill construction structures, the trench backfill structure provided by this utility model eliminates the need for plain soil compaction during construction, while solving the problems of unreliable compaction quality, high construction difficulty due to small working surface, and high requirements for soil materials in existing plain soil backfill construction. Furthermore, it ensures that the basement structural interface is constructed simultaneously with the trench and waterproofing. Therefore, the trench backfill structure provided by this utility model not only enhances the quality of trench backfilling but also saves overall time costs.
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