综采工作面末采阶段等压原理与顶板控制技术  

Yield Mining Theory and Roof Control Technology at End- mining Stage of Fully- mechanized Face

作　　者：郑芳菲 孙中光 李少刚 叶文韬 郭炜 

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400039 [2]煤炭科学技术有限公司安全分院,北京100013 [3]煤炭资源高效开采与洁净利用国家重点实验室,北京100013

出　　处：《矿业安全与环保》2015年第2期64-67,共4页Mining Safety & Environmental Protection

摘　　要：为研究大采高综采工作面末采阶段矿压显现规律及等压技术原理,以察哈素煤矿3101工作面末采阶段开采为背景,采用理论分析和现场实测的方法,确定合理等压措施和末采支护方案。研究结果表明:工作面加速推进可使来压步距和来压持续长度明显增加,而对支架工作载荷、动载系数等来压特征影响较小。现场应用显示:停采等压技术可有效控制来压位置,减小来压步距和来压持续长度;合理留设等压间隔煤柱,可确保挂网和贯通回撤阶段顶板压力显现较为缓和。In order to study the law of strata behaviors and the theory of yield mining at the ending stage of fully-mechanized face with large mining height, the reasonable yield mining measures and the support scheme for end-mining were determined by taking the mining at the ending stage of No. 3101 working face in Chahasu Mine as background and through the theoretical analysis and site measurement. The research results showed that it could increase the weighting distance and sustain the length significantly by accelerating mining velocity, while the loading distribution and dynamic load coefficient of the powered supports were less affected by the mining velocity change. The side application indicated that It could control weighting position, increase weighting distance and sustain length effectively by using yield mining technology; reasonable coal pillar length for yield mining could make sure a mild roof strata behavior at the stage of hanging nets, cut-through and equipments withdrawal.

关 键 词：末采 推进速度 来压规律 合理等压位置 回撤通道支护 

分 类 号：TD322[矿业工程—矿井建设]