陕西煤炭2026，Vol.45Issue(1)：79-84,93,7.DOI:10.20120/j.cnki.issn.1671-749x.2026.0114
浅埋煤层工作面过沟开采关键层破断结构分析
Fracture structure analysis of key strata in cross-ditch mining of shallow coal seam working face
LIU Jianlei 1LIU Yi2
作者信息
- 1. Shaanxi Yanchang Petroleum Mining Co.,Ltd.,Xi'an 710082,China
- 2. Shaanxi Nanliang Mining Co.,Ltd.,Yulin 719000,China
- 折叠
摘要
Abstract
In order to study the mechanical behavior and influential factors of the broken structure of the key strata during the mining of the shallow buried working face.The stress problem of the key layer in the uphill section is simplified as a lin-ear load model of the cantilever beam.The failure modes of the key layer are analyzed,and it is found that the tensile failure and shear failure are the main failure modes.Combined with range analysis and single factor sensitivity analysis,the effects of key stratum thickness,shear strength,volume force and slope angle on the collapse length of key stratum were studied.The results show that the thickness of the key stratum has the most significant effect on the collapse length,and the slope an-gle and shear strength also have a certain influence.The numerical simulation analysis further reveals the distribution char-acteristics of the stress field and plastic zone of the surrounding rock when the working face passes through the ditch,indica-ting that the slope has a significant effect on the stress of the surrounding rock,and the stress distribution and plastic zone of the surrounding rock show asymmetry during the process of crossing the ditch.关键词
浅埋煤层/过沟开采/关键层/敏感性分析Key words
shallow coal seam/cross-ditch mining/key strata/sensitivity analysis分类
矿业与冶金引用本文复制引用
LIU Jianlei,LIU Yi..浅埋煤层工作面过沟开采关键层破断结构分析[J].陕西煤炭,2026,45(1):79-84,93,7.
