A high-water backfill material for mine filling and its construction and application method
By combining ordinary silicate cement, magnesium oxide expanding agent, slag powder and activator, a high-water backfill material is developed, which solves the problems of slow setting of silicate cement and high cost of aluminate cement. This results in a mine backfill material with rapid setting, high early strength and good durability, suitable for green mining.
CN118005335BActive Publication Date: 2026-07-17YANCHENG INST OF TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- YANCHENG INST OF TECH
- Filing Date
- 2023-12-27
- Publication Date
- 2026-07-17
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Abstract
This invention discloses a high-water backfill material for mine backfilling and its construction and application method. The powder material includes ordinary silicate cement, magnesium oxide expanding agent, slag powder, industrial gypsum powder, and an activator. The activator is composed of aluminate, silicate, fluoroaluminate, acrylic acid, and a catalyst. The construction and application method involves weighing and mixing the powder materials in sequence; weighing water at the construction site as required and adding it to the powder materials; and mixing with a forced mixer for 2 minutes until uniform, thus obtaining the high-water backfill material for mine engineering. According to the backfilling and support requirements of the mine engineering, the high-water backfill material is injected into the mined area. After solidification, the backfilling and support requirements of the mined area are met. The high-water backfill material for mine engineering provided by this invention has high fluidity and long retention time.
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