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- W2357894037 abstract "The numerical model was established by FLAC3D software according to the existing engineering geological data and scientific research results on No.1 Colliery of Xinji Energy Company.Combined with the observation data from the coal mine,the stress of surrounding rock,the plastic region and the deformation of the roadway in the upper mining face were studied during the coal mining in opposite directions in the upper and lower coal seams with small horizontal separation.The results showed that the surrounding rock deformation of the roadway in the upper mining face varied in two stages in the advancing process of two mining faces.The plastic damage in some regions caused the continuous deformation of the surrounding rock.So the key of roadway support in the upper mining face is to strengthen the plastic damage area of surrounding rocks so as to improve the own bearing capacity of surrounding rocks." @default.
- W2357894037 created "2016-06-24" @default.
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- W2357894037 date "2012-01-01" @default.
- W2357894037 modified "2023-09-25" @default.
- W2357894037 title "Influence of two coal faces with small horizontal separation in upper and lower coal seams mined in opposite directions on roadway of upper face" @default.
- W2357894037 hasPublicationYear "2012" @default.
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