三软厚煤层综放开采工作面窄煤柱合理尺寸研究

doi:10.11799/ce201609019

Abstract

Abstract: Study on the No.11 mining area’s conditions of ZhaoJiaZhai Mine , to research the reasonable width of coal pillar of the 11208 working face’s gob-side entry. The paper uses the theoretical calculation to determine the width of coal pillar, and the influence rule of coal mechanical parameter around the entry, the entry deformation and the plastic range are studied with different size of coal piller under the condition of before and after entry excavation by using the numerical simulation method. Based on site actual conditions,5m width of coal pillar is the reasonable width, and the entry stability is better. It provides an important basis for designing the width of coal pillar and inproving the working face production rate in the three-soft thick seam of fully mechanized working face.

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TD822+.3

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URL: http://www.coale.com.cn/EN/10.11799/ce201609019

http://www.coale.com.cn/EN/Y2016/V48/I9/64

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Research on The Reasonable Size of Narrow Coal Pillar in The Three-soft thick Seam of Fully Mechanized Working Face

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