高河矿E1316综放工作面煤柱稳定性研究

doi:10.19286/j.cnki.cci.2019.10.008

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Abstract

The mining pressure of the No. 3 coal seam working face of Gaohe Energy was obvious, in the past, the small coal pillars along the goaf and the flexible mold support was adopted, there were large deformations in the roadway, with serious problems of the bottom drum. In order to study the reasonable width of coal pillars in the face of No.3 thick coal seam, the E1316 working face was taken as the research object. The distribution law of lateral bearing pressure in E1315 goaf was analyzed by numerical simulation, which revealed the reasonable retention of the roadway along the goaf. The rationality of the section coal pillar retention was verified by Gaddg formula theory. The results showed that the 35 m coal pillar could avoid the stress concentration range of the mining area and ensure the stability of the roadway.

Key words： thick coal seam fully mechanized caving face coal pillar deformation instability size optimization

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	Zhang Yongping

Cite this article:

Zhang Yongping. Study on stability of coal pillar in E1316 fully mechanized caving face of Gaohe Mine[J]. CCI, 2019, 42(10): 29-32，35.

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http://www.mtyhg.com.cn/EN/10.19286/j.cnki.cci.2019.10.008 OR http://www.mtyhg.com.cn/EN/Y2019/V42/I10/29

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