预采顶分层放顶煤顶板破碎机理与冒放性研究  

Research on Fragmentation Mechanism and Caving Ability of Roof in Caving with Pre-mining Top Slice

作　　者：何燕新 杨永杰[1] 韩春[1] 宋宗武[1] 

机构地区：[1]山东科技大学矿业与安全工程学院,山东青岛266590

出　　处：《煤炭技术》2015年第6期33-35,共3页Coal Technology

摘　　要：以鹿洼煤矿2307(2)预采顶分层放顶煤工作面为工程背景,通过对工作面顶板的破断过程进行现场观测、理论研究、数值模拟,得到工作面顶板运动规律及矿压显现特点。对顶煤的冒放性进行了较为直观的分析评价,确定了合理的放煤步距,目的在于提高该工作面煤炭回收率,形成此类工作面高产高效技术体系,为其他相似地质、生产条件矿井提高煤炭回收率起到推广和借鉴作用。With Luwa coal mine 2307(2)pre-mining top slice caving face as the engineering background,through the field observation,theoretical research and numerical simulation on the process of roof fracture, conclusions could be got that the movement rules of the roof and characteristics of strata behaviors, and then we made a intuitive analysis and evaluation on the top-coal caving ability,and determined a reasonable caving coal interval. The objective of this research is to improve the coal recovery rate, and form such a high yield and efficient technology system as to make a reference for the other mine with similar geological and production conditions in promoting the recovery rate.

关 键 词：预采顶分层 放顶煤 数值模拟 破碎机理 冒放性 

分 类 号：TD327.2[矿业工程—矿井建设]