Underground mining projects often face more than one material problem at the same time. A site may need goaf backfill, empty roadway filling, gas drainage borehole sealing, broken rock reinforcement and slurry treatment within the same operating zone. These tasks should not be forced into one generic grout system.

ZRETE’s mining solution is built as a practical underground package. It covers High-Water Mine Backfill Grout and SW Super-High-Water Backfill Grout for filling and fire-prevention works, MT Coal Mine Borehole Sealing Grout for gas drainage and drilling safety, Advance Support Inorganic Reinforcement Grout for fractured rock stabilization and deep-hole pre-grouting, and Coal Slurry Solidification Agent for dewatering and rapid site conditioning.

How to choose the right route

Backfill and goaf filling

Choose high-water or super-high-water backfill grout when the main task is mine void filling, empty roadway filling or fire-prevention filling, and long-distance pumping is required.

Borehole sealing

Choose MT borehole sealing grout for gas drainage boreholes, anti-outburst drilling, water exploration holes and other mine sealing work where long-term low-permeability performance is critical.

Broken rock and advance support

Choose advance support inorganic reinforcement grout for fractured surrounding rock, deep-hole pre-grouting, behind-shotcrete grouting and seepage blocking in weak or disturbed ground.

Coal slurry solidification

Choose the slurry solidification agent when the priority is dewatering, rapid curing, strength gain and easier transport or reuse of coal slurry.

Recommended product matrix

• High-Water Mine Backfill Grout — standard underground filling and gob / goaf backfill

• SW Super-High-Water Backfill Grout — very high water ratio filling and fire-prevention work

• MT Coal Mine Borehole Sealing Grout — gas drainage and drilling-hole sealing

• Advance Support Inorganic Reinforcement Grout — fractured rock reinforcement and deep-hole pre-grouting

• Coal Slurry Solidification Agent — dewatering, curing and strength improvement of coal slurry

Typical applications

• Goaf and gob backfill

• Empty roadway filling

• Mine fire-prevention filling

• Gas drainage borehole sealing

• Anti-outburst and water exploration hole sealing

• Broken rock reinforcement and seepage blocking