|Document ID (ISN)||78030|
|Convention or series no.
||HSE Contract Research Report CRR 368/2001
||Kent L., Bigby D.
Health and Safety Executive
||Falls of ground risks in coal mines face roadways
||HSE Books, P.O. Box 1999, Sudbury, Suffolk CO10 2WA, United Kingdom, Sep. 2001. viii, 69p. Illus. 15 ref. Price: GBP 20.00.
||To address the risk of ground collapse in roadways of underground coal mines due to failures of roof and face reinforcement, rib behaviour and failure mechanisms were studied with the aid of numerical modelling. The model was then used to assess the effectiveness of various reinforcement systems. A new type of extensometer for rib deformation monitoring was investigated to overcome the current problems with existing instrumentation. The risk assessment technique was developed and used successfully at three sites, providing an objective method for determining rib stability and associated falls of ground risks. A variety of rib reinforcement systems were tested in the laboratory encapsulation to assess their performance with respect to rib failure mechanisms. In conclusion, the risk assessment technique was successfully applied to roadways to indicate stability risks associated with face retreat.
||United Kingdom; underground mining; coal mining; collapse; support of mineworkings
||report; propping; materials testing; mathematical models; hazard evaluation
||E - Books, reports, proceedings
|Country / State or Province||United Kingdom|
||Mines and quarries
|Broad subject area(s)
||Mining and quarrying