MT Coal Mine Borehole Sealing Grout is an inorganic sealing grout for gas drainage and mine borehole sealing, designed to create a dense and durable barrier against gas and moisture leakage.
Long-term gas and moisture sealing
Adjustable setting for different hole conditions
Stable in humid, sulfur-rich underground environments
Mineral-based powder system with practical site use
Product Introduction
MT Coal Mine Borehole Sealing Grout is a mineral-based inorganic sealing product formulated with silicate cement and active mineral additives for borehole sealing in coal mines. After hydration, it forms a high-strength, low-permeability sealing body that helps block gas and moisture migration and improves the effectiveness of gas drainage and mine safety control.
It is suitable for long-term sealing of gas drainage boreholes in the working seam and adjacent seams, as well as anti-outburst drilling, water exploration holes and grouting holes. It can also be used in goaf sealing and auxiliary sealing works in mine ventilation systems.
The MT range includes multiple grades so contractors can match water ratio, setting behavior, strength level and expansion performance to different borehole conditions and sealing requirements.
Product Parameters
| Parameter | Value |
|---|---|
| Reference Standard | T/QGCML3910-2024 |
| Available Grades | MT-1 / MT-2 / MT-3 / MT-4 / MT-5 |
| Product Type | Inorganic borehole sealing grout |
| Mix Water Ratio | MT-1: approx. 0.4–1.0:1; MT-2 / MT-3 / MT-4: approx. 0.8–1.0:1; MT-5: approx. 0.4:1 |
| Initial Setting Time | 15–60 min, adjustable |
| Final Setting Time | ≥30 min, adjustable |
| Fineness | Ultrafine powder |
| Sieve Residue | ≤30% |
| Compressive Strength | Grade-dependent, available up to ≥40 MPa |
| Expansion Performance | Grade-dependent, available for sealing stability selection |
| Packaging | 25 kg/bag |
| Shelf Life | 6 months |
Product Usage
Gas drainage borehole sealing in coal seams and adjacent seams
Sealing of anti-outburst, water exploration and grouting holes
Auxiliary sealing in goaf areas and mine ventilation systems
Mix with the recommended water ratio according to grade and site condition
Inject or place into the borehole sealing zone to form a dense sealing body
Product Documentation
MT Coal Mine Borehole Sealing Grout
Coal Mine Borehole Sealing Grout for Gas Drainage & Water Exploration | ZRETE
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