陕西煤炭2024，Vol.43Issue(8)：30-33,51,5.DOI:10.20120/j.cnki.issn.1671-749x.2024.0806
不同长度工作面矿压显现规律及支护强度分析
Mine strata behavior law and support strength of different working face length
刘军锋1
作者信息
- 1. 北京天玛智控科技股份有限公司,北京 101399
- 折叠
摘要
Abstract
In order to study the influence of different working face lengths on the mine strata behavior law and the change law of the reasonable support strength of the support when the working face length changes,combined with the actual geolog-ical conditions of a mine,the mine strata behavior under different working face lengths is analyzed and calculated.The anal-ysis shows:when the length of the working face is fixed and the excavation distance along the strike direction exceeds 450 m,the rib spalling and roof subsidence is in a stable state and is no longer affected by the excavation distance along the strike direction;Based on the one-time excavation of 450 m,along the working face direction,the roof subsidence is the lar-gest in the middle and the smallest at both ends in an arch shape.With the increase of the working face length,the roof sub-sidence arch gradually increases.With the every 30 m increase of the working face,the increasing rate of the roof subsidence is 5％～8％.The roof subsidence can directly reflect the roof pressure.According to the analysis and calculation,the rea-sonable support strength will increase by 5％～8％with the every 30 m increase of the working face.关键词
工作面长度/矿压显现/煤壁片帮/顶板下沉/支护强度Key words
working face length/mine strata behavior/coal wall spalling/roof subsidence/support strength分类
矿业与冶金引用本文复制引用
刘军锋..不同长度工作面矿压显现规律及支护强度分析[J].陕西煤炭,2024,43(8):30-33,51,5.
