An ultrafine, micro-expansive, high-strength grouting material for deep mines
CN116854442BActive Publication Date: 2026-05-26CHANGCHUN GOLD DESIGN INST
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGCHUN GOLD DESIGN INST
- Filing Date
- 2023-07-11
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
Existing cement grout materials are difficult to inject into the surrounding rock of deep mines. After hardening, they shrink greatly and have low strength, making them unable to effectively seal and fill cracks.
Method used
An ultra-fine, micro-expansion, high-strength grouting material is prepared by mixing cement, lime, gypsum, blast furnace slag, dolomite powder, thixotropic agent, water-reducing agent, and reinforcing agent in a specific ratio, making it suitable for deep mines.
Benefits of technology
This grouting material can be better injected into micro-cracks, and the stone body has high strength, which can fully seal and fill cracks, achieving the ideal water-blocking and reinforcement effect.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure SMS_1
Abstract
An ultrafine, micro-expansion, high-strength grouting material for deep mines is prepared by mixing the following raw materials in the following weight ratios: 25-32 parts cement, 3-5 parts lime, 5-8 parts gypsum, 8-12 parts blast furnace slag, and 15-22 parts dolomite powder. The grouting material prepared by this invention has the characteristics of being ultrafine, micro-expansion, and high strength. Multiple experiments have shown that this grouting material has a short setting time, can reduce grout loss in the formation, and the stone body has a certain degree of micro-expansion and high strength, which can more fully seal and fill cracks, achieving ideal water-blocking reinforcement and seepage prevention effects.
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