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矸石充填综采覆岩关键层变形特征研究
引用本文:张吉雄,李剑,安泰龙,黄艳利.矸石充填综采覆岩关键层变形特征研究[J].煤炭学报,2010,0(3):357-362.
作者姓名:张吉雄  李剑  安泰龙  黄艳利
作者单位:中国矿业大学
基金项目:国家自然科学基金重点项目(50834004);;江苏省创新学者攀登项目(BK2008007);;中国矿业大学科技基金项目(2007B003)
摘    要:在分析传统综采与充填综采覆岩变形特征的基础上,建立充填综采覆岩关键层力学模型,并运用弹性地基梁理论分析了关键层弯曲变形的特征,得到关键层最大挠度与强度、下部岩层弹性地基系数与岩性参数之间的关系。结合某矿的具体条件,计算得出充填综采工作面覆岩关键层的最大挠度,并通过改变充填材料的性质,研究了充填材料弹性模量与关键层挠度之间的变化关系,提出可通过提高充填材料弹性模量的方法减少关键层的弯曲变形量,证实了矸石充填具有限定关键层的变形、控制地表沉陷的作用。

关 键 词:矸石  充填综采  关键层  变形  弹性地基  
收稿时间:2009-12-16

Deformation characteristic of key stratum overburden by raw waste backfilling with fully-mechanized coal minning technology
ZHANG Ji-xiong,LI Jian,AN Tai-long,HUANG Yan-li.Deformation characteristic of key stratum overburden by raw waste backfilling with fully-mechanized coal minning technology[J].Journal of China Coal Society,2010,0(3):357-362.
Authors:ZHANG Ji-xiong    LI Jian  AN Tai-long  HUANG Yan-li
Affiliation:1.School of Mines/a>;China University of Mining & Technology/a>;Xuzhou 221116/a>;China/a>;2.State Key Laboratory of Coal Resources & Mine Safety/a>;Xuzhou 221008/a>;3.School of Sciences/a>;China
Abstract:Based on the analysis of the deformation characteristic of overlying stratum in fully-mechanized coal minning technology and backfilling with fully-mechanized coal minning technology,the mechanical model of key stratum in the raw waste backfilling with fully-mechanized coal minning technology was founded,and the bending deformation characters of the key stratum was analyzed by the theory of beam on elastic foundation.The maximum deflection and intensity of the key stratum,and the relation between lithologic...
Keywords:waste  backfilling with fully-mechanized coal minning technology  key stratum  deformation  elastic foundation  
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