高瓦斯孤岛工作面新掘巷道支护设计研究

Research on the support roadway design in the high gas island working face

N1202工作面两侧为采空区,属于孤岛工作面。新掘的N1202回风顺槽和胶带顺槽巷道断面、应力环境及使用要求等都相同,掘进断面为5400×3800mm。本文结合具体地质条件并应用FLAC3D模拟软件对支护参数进行了详细的模拟研究,确定帮锚杆间排距为850×900mm,顶板锚杆间排距800×900mm的最佳支护方案,为类似条件的工作面安全采掘提出了一种新思路。

On both sides of N1202 working face is gob, belong to isolaned working face. The section, stress environment and application requirements of the extracting return air and belt roadway of N1202 working face are the same, the excavated section is 5400 * 3800mm. In this paper, combined with the specific geological conditions,the supporting parameters are studied in detail using FLAC3D simulation software, the best supporting scheme is that the wall bolt spacing is 850mm * 900mm, and the roof bolt spacing is 800 * 900mm,which provide a new idea for the safety production of working face with similar conditions.