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Reduction of rock movements in roadways by various methods of reinforcing rock
Improved rock characteristics and reduced rock movements in German coal mines were achieved by use of supplementary bolting in roadways; injection of high-strength synthetic resins prevented running-out of coal and frequently rendered them firmer; it was possible to fill naturally weak surfaces and cracks even before coal-getting, and to cement together individual portions; injection of cement sludge, after prior backfilling of supports with mortar, can also improve faulted rocks.
Reduction of rock movements in roadways by various methods of reinforcing rock
Improved rock characteristics and reduced rock movements in German coal mines were achieved by use of supplementary bolting in roadways; injection of high-strength synthetic resins prevented running-out of coal and frequently rendered them firmer; it was possible to fill naturally weak surfaces and cracks even before coal-getting, and to cement together individual portions; injection of cement sludge, after prior backfilling of supports with mortar, can also improve faulted rocks.
Reduction of rock movements in roadways by various methods of reinforcing rock
Int Conference Strata Control Rock Mechanics -- Paper
Schuermann, F. (author)
Meeting of the Fourth International Conference on Strata Control and Rock Mechanics ; 1964
1964
13 pages
Conference paper
English
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