A construction method of a pre-mixed fluidized solidified soil backfill foundation pit
By using the pre-mixed fluidized solidified soil backfilling method, combined with pretreatment of the foundation pit sidewalls, interface anchor reinforcement, layered controlled-speed pouring, and intelligent curing, the problems of low efficiency and insufficient compaction in foundation pit backfilling were solved, achieving high-strength and high-quality backfilling results that meet environmental protection and economic requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-31
- Publication Date
- 2026-07-17
AI Technical Summary
Existing foundation pit backfilling technologies suffer from low efficiency, insufficient compaction, low bond strength, poor environmental performance, and difficulty in controlling construction quality, making it difficult to meet the requirements for efficient, environmentally friendly, and high-quality backfilling.
The pre-mixed fluidized solidified soil backfilling method is adopted. Through pretreatment of the foundation pit sidewalls, matrix-type interface anchor reinforcement, layered controlled-speed pouring, low-frequency vibration, intelligent temperature and moisture control curing and quality monitoring, the high bonding strength and density of the backfill are ensured.
It achieves high bonding strength (≥0.3MPa), compaction degree (≥96%), and 28-day compressive strength (≥3.0MPa) in the backfill, reducing the amount of manual and mechanical work, lowering rework costs, and meeting environmental protection and economic requirements.
Smart Images
Figure CN122406774A_ABST