梁北矿松软大采高工作面高水充填沿空留巷技术研究  

Study on Gob-side Entry Retaining Using High-water Materials Filling in Large Mining Height and Soft Coal Seam of Liangbei Mine

作　　者：王克强[1] 侯荣彬 张凯[2] WANG Keqiang;HOU Rongbin;ZHANG Kai(Henan Shenhuo Coal and Power Co.,Ltd.,Yongcheng 476600,China;China University of Mining and Technology,Xuzhou 221110,China)

机构地区：[1]河南神火煤电股份有限公司,河南永城476600 [2]中国矿业大学,江苏徐州221110

出　　处：《煤炭技术》2024年第8期120-124,共5页Coal Technology

摘　　要：以高水材料适应性研究为基础,通过分析梁北煤矿厚硬顶板大采高工作面沿空留巷围岩控制难点,提出“预裂切顶-高水充填-超前加固”沿空留巷技术。通过室内试验确定了高水充填材料最佳水灰比、早强剂掺量和用水温度;采用理论分析和工程类比确定了预裂切顶、超前加固和高水充填支护方案;采用数值模拟分析了沿空留巷方案的可行性。工程实践效果表明,围岩变形滞后工作面100~150 m趋于稳定,变形整体可控,留巷效果较好。Based on the research on the adaptability of high-water materials,a technique of gob-side entry retaining named“cutting roof-high water materials filling-advance support”was proposed by analyzing the difficulties of surrounding rock control in large mining height working face with thick-hard roof in Liangbei mine.The optimum water cement ratio,early strength agent dosage and water temperature of high-water filling materials were determined through laboratory tests.The schemes of cutting roof,advance support and high-water materials filling were determined by theoretical analysis and engineering analogy.The feasibility of gob-side entry retaining scheme was analyzed by numerical simulation.The engineering practice results show that the roadway retaining surrounding rock lags behind the working face by 100-150 m and tends to be stable.The deformation of surrounding rock can be controlled as a whole,and the effect of retaining roadway is good.

关 键 词：大采高 厚硬顶板 高水材料 沿空留巷 

分 类 号：TD353[矿业工程—矿井建设]