Underground disposal and utilisation of colliery waste
At Daw Mill Colliery in Warwickshire, a down shaft pump packing system has been developed by TSRE (then MRDE). In this system, waste from the coal preparation plant is graded by screening and crushing, mixed with bentonite and water to form a pumpable slurry and then pumped some 3 km down the shaft and horizontally to a coal face to form a gate side pack. The object of the current project was to develop this technology further, to a point where large quantities of colliery waste could be pumped a sufficient distance for disposal either at a surface site, or underground in disused roadways or behind active coalfaces. Work undertaken on this project is split into four sections: (i) slurry development and pumping; (ii) slurry placing techniques using stabilising agents; (iii) slurry stabilising agents; (iv) pilot plant design and operation. In this report these four work areas are reviewed and conclusions are drawn for the project as a whole.
Bibliographic Reference: EUR 14872 EN (1993) 265 pp., MF, ECU 12
Record Number: 199311207 / Last updated on: 1994-11-29
Original language: en
Available languages: en