山东煤炭科技2023，Vol.41Issue(12)：28-31,36,5.DOI:10.3969/j.issn.1005-2801.2023.12.007
浅埋煤层群无煤柱回采巷道分区域高效支护技术
High Efficiency Support Technology in Different Regions for Non Coal Pillar Mining Roadways in Shallow Buried Coal Seam Groups
辛毅1
作者信息
- 1. 山西晋神沙坪煤业有限公司,山西 忻州 036500
- 折叠
摘要
Abstract
In order to improve the resource recovery rate and control the deformation of the surrounding rock of the roadway,the 9203 working face adopts the technology of retaining the roadway along the goaf without coal pillars.Through the analysis of the geological situation of the 9203 working face,the transportation roadway is divided into three sections:collapse section I,roadway retaining section II,and coal pillar section III.The roadway retaining section adopts high water filling retaining the roadway along the goaf and dense support measures in different regions of the roadway.The water cement ratio of high water filling is 0.8:1,and the width of the filling body is 1.0 m.Compared with the usual roadway excavation technology,the 9203 working face transportation roadway can save 2.828 9 million yuan in support materials costs,shorten the excavation period by 4.5 months,and effectively solve the continuing tension problem of mining and excavation in mines.关键词
沿空留巷/浅埋煤层/差异支护/无煤柱开采Key words
retain roadway along goaf/shallow buried coal seam/differential support/coal mining without coal pillars分类
矿业与冶金引用本文复制引用
辛毅..浅埋煤层群无煤柱回采巷道分区域高效支护技术[J].山东煤炭科技,2023,41(12):28-31,36,5.
