煤炭与化工2023，Vol.46Issue(11)：33-36,43,5.DOI:10.19286/j.cnki.cci.2023.11.008
厚煤层坚硬顶板大采高工作面沿空留巷技术研究与应用
Research and application of gob-side entry retaining technology in hard roof and large mining height face of thick coal seam
温耀军1
作者信息
- 1. 山西凯嘉能源集团有限公司,山西晋中 032000
- 折叠
摘要
Abstract
Full height mining technology with large mining height was adopted in the sixth mining area in the north wing of Yitang mine.The mining height of the working face was 5 m,and the roof of the working face was limestone hard roof.The gob-side entry retaining technology was tested in the return airway of the working face.The roadway was up to 4 m high,the section is large and the roof of the roadway was left with 1.2 m thick No.9 coal.There was no example that can be used for reference in China to carry out gob-side entry retaining under such conditions.Through theoretical design and similar simulation research,a reasonable roadway retaining support method and gangue retaining scheme were obtained.The on-site mine pressure observation results showed that the roadway retention effect was good and the technical economy was reasonable.This roadway retaining scheme could be popularized and applied in mines with similar conditions.关键词
厚煤层/坚硬顶板/大采高工作面/沿空留巷Key words
thick coal seam/hard roof/large mining height working face/gob-side entry retaining分类
矿业与冶金引用本文复制引用
温耀军..厚煤层坚硬顶板大采高工作面沿空留巷技术研究与应用[J].煤炭与化工,2023,46(11):33-36,43,5.
