EXPERIMENTAL STUDY OF APPLICATION OF BOLTING TO THE IMPACT GROUND PRESSURE ZONE OF EXTRA-THICK COAL-BEDS AT LAOHUTAI COAL MINE
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Abstract
The coal bed thickness of Fushun diggings is about 55 meters belongs to extra thick coal beds.Fushun diggings is such a area that impact ground pressure occurs very often and apears very badly.In Fushun Laofutai Coal Mine,the experimental study of application of bolting to the impact ground pressure zone of extra thick coal beds is obtained succefully.
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