Inorganic Cement Grouted Bolt System

Serbousek, M. O.
Organization: International Conference on Ground Control in Mining
Pages: 4
Publication Date: Jan 1, 1981
In 1975 the Bureau of Mines Spokane Research Center began a series of laboratory and field tests to investigate the feasibility of developing a substitute for the organic chemicals used in resin roof-bolting systems. An inorganic system, comprised of calcinated gypsum, an accelerator, and microcapsules of water was developed and patented by the Bureau in 1977. The system has several advantages including economics, non- toxicity, nonallergenic, inflammability, and is not based on petroleum products. Two roof-bolting systems utilizing inorganic cements are under development at the Spokane Research Center--a cartridge system, using the microcapsules of water and accelerator, and a slurry system, using a mix-inject method which combines dry powder cement with water for simultaneous injection into a predrilled roof-bolt hole. Several underground field tests have been conducted in eastern coal mines. Test results indicate that inorganic cartridge systems are adequately supporting mine roof in several test sections. Economic potential for the bolt systems appears favorable.
Full Article Download:
(1703 kb)


Additional chapters/articles from the SME-ICGCM book Proceedings Of The 1st Annual Conference On Ground Control In Mining

Stress And Stability In Coal Ribsides And Pillars
Improved Design Of Coal Pillars For U.S. Mining Conditions
Review Of Pillar Design Equations Including The Effects Of C
Abutment Pillar "Notching" Improves Abutment Tunnel Roof Con
The Influence Of Certain Geologic And Geotechnical Factors O
Considerations Of Gas Outbursts In Using Dome Salt Mines For
An Overview Of Bureau Of Mines Ground Control Research
Stability Behaviour Of Coal Mining Tunnels With Different Su
Strata Disturbance Prediction For Mining Beneath Surface Wat
Monitoring For The Evaluation Of The Stability Of Undergroun
Controlled Thrust And Torque Placement Of Mechanical Anchor
Roklok Polyurethane Binder: A Chemical Injection System For
Resupporting High Roof Falls
A New Combination Friction-Suspension Support System Scott
Inorganic Cement Grouted Bolt System
Development Of A Resin Point Anchor
An Engineering Analysis Of "Squeeze" Failure Of Pillars In T
Ground Control In Multiple Seam Mining
Applications Of Reflection Seismics To Mapping Coal Seam Str
The Use Of Geologic Modeling In The Prediction Of Adverse Ro
Design Of Shield Supports For The U.S. Coal Mining Industry
Longwall Mining Of Thin Seams
Support Selection For The Multi-Lift Mining Method
Design And Operation Of Powered And Entry Supports
Evaluation Of Existing Predictive Methods For Mine Subsidenc
A Study Of Longwall Subsidence In The Appalachian Coal Regio
Subsidence Studies In Thick And Steep Coal Seam Mining