山东煤炭科技2025，Vol.43Issue(6)：18-23,6.DOI:10.3969/j.issn.1005-2801.2025.06.004
浅埋超长孤岛工作面矿压规律及工作面尺度效应研究
Research on Mine Pressure Laws and Working Face Scale Effect of Shallow Burial Ultra-long Isolated Island Working Faces
齐晓华 1李彦云 1张利1
作者信息
- 1. 陕西煤业化工集团孙家岔龙华矿业有限公司,陕西神木 719314
- 折叠
摘要
Abstract
In view of the problem of unclear characteristics of roof activity laws and strata behavior in the ultra-long isolated island working face of Longhua Coal Mine,on-site actual measurement,theoretical analysis,and numerical simulation methods are adopted to analyze the strata behavior laws of the 400 meter ultra-long isolated island working face in Longhua Coal Mine.The results show that the mine pressure law of the ultra-long working face has characteristics such as weighting asynchrony,transmission,zoning differences in support resistance and others in the direction of inclination.The initial average weighting strength of the upper part of the working face is 28.4 MPa,the average strength of the middle part is 24.1 MPa,and the average strength of the lower part is 20.4 MPa,with a dynamic load coefficient of 1.31.Its strata behavior is mainly concentrated in the upper measurement area;The weighting sequence is sequentially transmitted from the upper part of the working face to the middle and lower parts,and the weighting step distance increases from the top to bottom;The advanced support pressure of the working face has a significant scale effect.After the length of the working face increases to a certain extent,the influence range and strength of the advanced support pressure will not show obvious alienation characteristics with the increase of the working face length.The research results provide a certain reference basis for safe and efficient mining of mines with similar conditions in the northern Shaanxi mining area.关键词
浅埋深/超长工作面/矿压规律/尺度效应Key words
shallow burial depth/ultra-long working face/mine pressure law/scale effect分类
矿业与冶金引用本文复制引用
齐晓华,李彦云,张利..浅埋超长孤岛工作面矿压规律及工作面尺度效应研究[J].山东煤炭科技,2025,43(6):18-23,6.
