梅花井矿601大采高工作面覆岩关键层及来压步距研究  

Study on Key Stratum of Overburden Strata and Weighting Interval of Roof in No.601 High Cutting Coal Mining Face in Meihua Mine

作　　者：孟志强[1,2] 纪洪广[1] 孙利辉[1] 刘坤[1] 

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [2]河北工程大学资源勘探重点实验室,河北邯郸056038

出　　处：《煤炭工程》2013年第10期72-75,共4页Coal Engineering

基　　金：国家高技术研究发展计划(863计划)重点项目(2008AA062104);国家重点基础研究发展计划(973计划)(2010CB226803);国家科技支撑计划(2008BAB33B03)

摘　　要：关键层运动对采场矿压显现、覆岩移动与地表沉陷及采动裂隙场分布有着重要的意义，为了确定梅花井矿关键层位置，文章采用矿压观测、岩石密度试验、单轴压缩及变形试验等方法，确定梅花井矿601大采高工作面覆岩力学性质和周期来压特征，并通过计算机编程计算硬岩和关键层。结果说明C6岩层为主关键层，C8为亚关键层，C6关键层步距为17．88m，与矿压观测结果对比，基本顶来压步距为13～26m，两者结果比较吻合。The movement of the key stratum would have important significances to the mine strata pressure behavior of the coal mining face, the movement of the overburden strata, the ground subsidence and the distribution of the mining crack field. In order to determine the location of the key stratum in Meihua Mine, the mine pressure observation, rock density test, uniaxial compression and deformation test and other method were applied to determine the overburden strata mechanics properties and the periodical roof weighting features of No. 601 high cutting coal mining face in Meihua Mine. With the computer programming, the hard rock and the key stratum were calculated. The results showed that C6 rock stratum was the main key stratum and Cs rock stratum was the sub - key stratum. The interval of C6 key stratum was 17.88m. In comparison with the mine pressure observation results, the weighting interval of the main roof was 13 - 26m and the two results were well fitted.

关 键 词：关键层 硬岩 基本顶来压步距 大采高 

分 类 号：TD323[矿业工程—矿井建设]