突出煤层底抽巷位置优化研究

发布时间：2018-12-28 17:11

【摘要】：针对突出矿井底抽巷合理位置的布置问题,结合豫西某矿首采工作面地质条件,采用FLAC3D对8种回采巷道与底抽巷相对位置的设计方案进行数值模拟,对比分析各布置方式条件下巷道围岩应力分布规律及巷道变形特征,综合经济因素及现场操作情况确定最优设计方案。结果表明:回采巷道与底抽巷垂距为5.8 m、垂距为10 m平距分别为10 m和15 m的设计方案均能满足巷道稳定性和支护要求,但从经济效益方面考虑垂距平距均为10 m的设计方案最优;经实践验证,回采巷道与底抽巷垂距和平距均为10 m的设计方案顶底板和两帮移近量可满足安全生产要求,抽采后残存瓦斯含量控制在3.3~5.8 m3/t,防突效果明显。此设计方案的成功运用,不仅可以指导该煤矿的安全、高效生产,而且也可为具有类似地质条件矿井的底抽巷布置提供借鉴和参考。
[Abstract]:In view of the layout of reasonable position of outburst mine bottom drainage roadway, combined with the geological conditions of first mining face of a certain mine in western Henan province, the design scheme of eight kinds of mining roadway relative position to bottom extraction roadway is numerically simulated by FLAC3D. The stress distribution law of surrounding rock and the deformation characteristics of roadway under the conditions of different layout modes are compared and analyzed. The optimum design scheme is determined by synthesizing economic factors and field operation conditions. The results show that the design scheme with vertical distance of 5.8 m and horizontal distance of 10 m and 15 m respectively can meet the requirements of roadway stability and support. But from the aspect of economic benefit, the design scheme with 10 m vertical anomaly distance is the best. It has been proved by practice that the design scheme of the vertical distance and the distance between the mining roadway and the bottom drainage roadway is both 10 m. The roof and floor plate and the two sides can meet the requirements of safety production. The residual gas content after extraction is controlled at 3.3m35.8 m3 / t, and the outburst prevention effect is obvious. The successful application of the design scheme can not only guide the safe and efficient production of the coal mine, but also provide reference and reference for the layout of the bottom drainage roadway of the mine with similar geological conditions.
【作者单位】：河南理工大学能源科学与工程学院;哈密职业技术学院;
【基金】：国家自然科学基金资助项目(51074066) 新疆自治区科技支疆项目(2013911038)
【分类号】：TD712.67

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