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]. 工程科学学报, 2005, 27(1): 5-8. DOI: 10.13374/j.issn1001-053x.2005.01.002
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]. 工程科学学报, 2005, 27(1): 5-8. DOI: 10.13374/j.issn1001-053x.2005.01.002
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WANG Shuren, WANG Jin'an, DAI Yong. Distinct element analysis on coal movement law and failure mechanism during mechanized top-coal caving in steep thick seam[J]. Chinese Journal of Engineering, 2005, 27(1): 5-8. DOI: 10.13374/j.issn1001-053x.2005.01.002
Citation: WANG Shuren, WANG Jin'an, DAI Yong. Distinct element analysis on coal movement law and failure mechanism during mechanized top-coal caving in steep thick seam[J]. Chinese Journal of Engineering, 2005, 27(1): 5-8. DOI: 10.13374/j.issn1001-053x.2005.01.002
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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

Distinct element analysis on coal movement law and failure mechanism during mechanized top-coal caving in steep thick seam

    摘要
  • 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顶煤的移动规律及相应的应力场、破坏场的变化特征,并对控顶区项煤的变形破坏特征及直接顶的离层跨落步距进行了分析.

     

    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.

     

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