1226工作面运输巷切顶卸压沿空留巷技术研究

为保障1226工作面切顶沿空留巷技术的顺利实施,通过分析切顶卸压技术原理,将切顶卸压划分为两个区域实施,切顶的高度分别为10m和11m,结合工作面具体条件对切顶卸压沿空留巷技术的方案进行设计,并通过矿压监测验证技术方案的效果。结果表明:运输巷留巷期间顶底板及两帮最大变形量分别为96mm和118mm,保障了留巷围岩的稳定。

Study on the Technology of Pressure Relief of Top Cutting and Gob Side Entry Retaining in Transportation Roadway of 1226 Working Face

In order to ensure the smooth implementation of the technology of cutting top along the empty roadway in the 1226 working face,the cutting top relief pressure is divided into two regions by analyzing the principle of cutting top relief technology,and the height of cutting top is 10m and 11m respectively.According to the specific conditions of the working face,the technical scheme of cutting top and discharging pressure along the empty roadway is designed,and the effect of the technical scheme is verified by mine pressure monitoring.The results show that the maximum deformation of the top floor and the two sides are 96mm and 118mm respectively,which ensures the stability of the surrounding rock.