凤凰山矿XV1304工作面石灰岩坚硬顶板运动规律研究 .pdfVIP

学兔兔 第46卷第11期 煤 炭 工 程 Vol_46．No．11 2014年第11期 COAL ENGINEERING No．11，2014 doi：10．1 1799／ce20l41 1017 凤凰山矿XV1304工作面石灰岩坚硬 顶板运动规律研究 王俊杰 ，赵磊磊 (1．晋城煤业集团，山西晋城 048021；2．河南理工大学能源科学与工程学院，河南焦作 454000) 摘 要：文章以凤凰山矿石灰岩坚硬顶板条件下XV1304综采工作面生产为背景，采用理论 计算和现场实测的方法对顶板结构特征及顶板来压特征进行了分析研究，结果表明：K，石灰岩 坚硬顸板分为下、中、上三个分层，各分层强度由下至上逐渐增大，岩层完整性也逐渐提高；总 厚约3．9m(厚约1．3m的下分层和厚约2．6m的中分层)的顸板下部分层随机垮落；厚约5．21m 的顶板上部分层并未表现出典型的周期来压特征，表现出明显的缓慢下沉特征。 关键词：石灰岩；坚硬顶板；顸板结构；缓慢下沉 中图分类号：TD323 文献标识码：A 文章编号：1671—0959(2014)l1-0054-04 Study on Movement Law of Limestone Hard Roof of XV1 304 Working Face in Fenghuangshan Coal Mine WANG Jun—jie ，ZHAO Lei—lei (1．Jincheng Coal Mining Group，Jincheng 048021，China； 2．School of Energy Science and Engineering，Henan Polytechnic University，Jiaozuo 454000，China) Abstract：Based on the production condition of XV1304 fully mechanized working face with limestone hard roof in Fenghuangshan coal mine，the paper studied the roof structure and the roof weighting structure through theoretical calculation and field observation．And the result shows that，the K2 limestone roof can be divided into the lower，middle and upper layers，the strength of each layer gradually increases upwards，SO as the rock mass integrity；the lower rock of roof is about 3．9m thick(with lower layer about 1．3m thick，and middle 2．6m)，which falls at random；the upper rock of roof is about 5．21 m thick，which shows obvious gradual sagging characteristic without typical periodic weighting．