煤炭与化工2025，Vol.48Issue(5)：42-45,4.DOI:10.19286/j.cnki.cci.2025.05.009
采空区煤柱下特厚煤层综放采场矿压特征及控制研究
Study on mine pressure characteristics and control of fully mechanized caving face in extra-thick coal seam under coal pillar in goaf
刘吉升1
作者信息
- 1. 山西世德孙家沟煤矿有限公司,山西忻州 036600
- 折叠
摘要
Abstract
In order to avoid the problems of abnormal mine pressure and support crushing during the fully-mechanized caving mining of No.13 extra-thick coal seam in Sunjiagou Mine,taking the first mining area as the engineering background,the characteristics and control measures of mine pressure in the fully-mechanized caving face under the influence of the remaining coal pillars in the upper goaf are studied.The research shows that when the fully-mechanized caving face of extra-thick coal seam enters and leaves the coal pillar of the upper goaf±15 m,the peak value of the abutment pressure of the working face increases rapidly,and the peak value of the abutment stress reaches 1.78 times during the normal pressure period when the coal pillar is removed,and there is a large risk of support crushing.Both the accelerated advancing speed and the coal pillar left by blasting can improve the stability and self-bearing capacity of the overlying rock structure during the coal pillar passing,and reduce the risk of support crushing in the working face.The research results can provide guidance for roof management and strata control in fully mechanized caving face.关键词
综放工作面/煤柱爆破/液压支架/采场矿压Key words
fully mechanized caving face/coal pillar blasting/hydraulic support/stope mine pressure分类
矿业与冶金引用本文复制引用
刘吉升..采空区煤柱下特厚煤层综放采场矿压特征及控制研究[J].煤炭与化工,2025,48(5):42-45,4.
