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2007•Journal of North China Institute of Science and TechnologyRequires access

The effect of mining under-protecting coal stratum to the roadway in overburden stratum

Min Tu

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Abstract

This paper analyzed and studied the deformation of overburden stratum by FLAC2D finite element numerical simulation and colliery on the test.The test indicated: mining under-protecting coal stratum leaded different degree of deformation to the overburden stratum,produced a great number of vertical and horizontal crannies.These crannies affected roadway in the overburden stratum.According to different deformation of the roadway,we could ascertain the range of the mining under-protecting coal stratum,and it provided references to layout of working face in the protecting coal stratum.

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What this paper is about

This paper analyzed and studied the deformation of overburden stratum by FLAC2D finite element numerical simulation and colliery on the test.The test indicated: mining under-protecting coal stratum leaded different degree of deformation to the overburden stratum,produced a great number of vertical and horizontal crannies.These crannies affected roadway in the overburden stratum.According to different deformation of the roadway,we could ascertain the range of the mining under-protecting coal stratum,and it provided references to layout of working face in the protecting coal stratum.

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Available abstract

This paper analyzed and studied the deformation of overburden stratum by FLAC2D finite element numerical simulation and colliery on the test.The test indicated: mining under-protecting coal stratum leaded different degree of deformation to the overburden stratum,produced a great number of vertical and horizontal crannies.These crannies affected roadway in the overburden stratum.According to different deformation of the roadway,we could ascertain the range of the mining under-protecting coal stratum,and it provided references to layout of working face in the protecting coal stratum.

Key concepts: Stratum, Overburden, Coal mining, Mining engineering, Deformation (meteorology), Coal, Geotechnical engineering, Geology

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