邹庄煤矿7703工作面巷道围岩稳定性分析与支护优化设计研究  

Closed Rock Stability Analysis and Support Optimization Design of 7703 Working Face in Zouzhuang Coal Mine

作　　者：夏尧 Xia Yao(School of Mining Engineering,Anhui University of Science and Technology,Huainan,China)

机构地区：[1]安徽理工大学矿业工程学院,安徽淮南

出　　处：《科学技术创新》2025年第11期208-211,共4页Scientific and Technological Innovation

摘　　要：为研究大采高俯采工作面巷道围岩变形规律及支护优化,以邹庄煤矿7703工作面为背景,采用FLAC3D数值模拟对比分析三种支护方案的围岩稳定性。结果表明:①支护强度显著影响应力分布,方案三顶板和两帮应力值较方案一降低12.2%和10.5%,应力集中现象明显改善;②支护强度提升有效控制围岩变形,方案三顶底板变形量较方案一减少12.2%和17.9%,实体煤帮与工作面帮水平位移分别降低24.9%和21.0%;研究表明提高支护强度可优化围岩应力状态,抑制塑性区扩展,增强巷道稳定性,研究成果为大采高俯采地质条件巷道支护设计提供了理论依据与实践指导。To investigate the deformation and failure characteristics of surrounding rock in high-cutting-height,steeply inclined mining faces and evaluate the stability under different support schemes,this study utilized FLAC3D numerical simulation software to model the mining process.Focusing on the 7703 working face in the 87 mining area of Zouzhuang Coal Mine,three support schemes were designed,and the stress distribution,deformation characteristics,and plastic zone distribution of the surrounding rock under different support conditions were analyzed.The results show:①Support Scheme 1 exhibited the highest stress concentration in the roof and sidewalls,while Scheme 2 reduced these stresses.Scheme 3 achieved the most uniform stress distribution,with roof and sidewall stresses decreasing by approximately 12.2%and 10.5%,respectively,indicating that increased support strength effectively improves stress distribution and enhances stability.②As support strength increased,roof and floor deformations decreased by 12.2%and 17.9%,respectively,while horizontal displacements in the sidewalls were significantly reduced,with solid coal side displacement decreasing by 24.9%and working face side displacement by 21.0%.This study provides practical guidance for roadway support design under similar geological conditions.

关 键 词：大采高工作面 俯采工作面 围岩稳定性 数值模拟 支护优化 

分 类 号：TD353[矿业工程—矿井建设]