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大倾角厚煤层综放开采顶煤移动规律与破坏机理的离散元分析
引用本文:王树仁,王金安,戴涌.大倾角厚煤层综放开采顶煤移动规律与破坏机理的离散元分析[J].北京科技大学学报,2005,27(1):5-8.
作者姓名:王树仁  王金安  戴涌
作者单位:北京科技大学土木与环境工程学院,北京,100083
基金项目:高等学校博士学科点专项科研项目
摘    要:应用UDEC2D计算程序,对某煤矿大倾角厚煤层综采放顶煤的空间效应及其放煤机理进行了数值模拟,揭示了在综放开采过程中采场覆岩与项煤的移动规律及相应的应力场、破坏场的变化特征,并对控顶区顶煤的变形破坏特征及直接顶的离层跨落步距进行了分析.

关 键 词:大倾角厚煤层  煤岩移动  综采放顶煤  数值模拟  大倾角  厚煤层  综放开采  顶煤移动规律  破坏机理  离散元分析  thick  seam  during  failure  mechanism  movement  coal  离层  直接顶  破坏特征  变形  顶区  变化特征  应力场  采场覆岩  开采过程
修稿时间:2004年3月1日

Distinct element analysis on coal movement law and failure mechanism during mechanized top-coal caving in steep thick seam
WANG Shuren,WANGJin'an,DAI Yong.Distinct element analysis on coal movement law and failure mechanism during mechanized top-coal caving in steep thick seam[J].Journal of University of Science and Technology Beijing,2005,27(1):5-8.
Authors:WANG Shuren  WANGJin'an  DAI Yong
Abstract:By using UDEC2D technique, this paper analyzed coal and rock movement laws, the deformation and failure characteristics of coal and the major principal stress in the process of top-coal caving in steep thick seam. The failure mechanism of coal and the movement trend of rock on the top-coal caving working face were discussed. The results showed agreement with the field conditions, which is of important theoretical meaning to direct the practice in the similar engineering.
Keywords:steep thick seam  coal and rock movement  mechanized top-coal caving  mumerical simulation
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