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| 顶煤弱化爆破参数的数值分析 | |
| 引用本文： | 李雷东,李文清. 顶煤弱化爆破参数的数值分析[J]. 华北科技学院学报, 2011, 0(4): 33-37 |
| 作者姓名： | 李雷东 李文清 |
| 作者单位： | [1]西安科技大学,陕西西安710054 [2]鄂尔多斯煤矿安全监察分局,内蒙古鄂尔多斯017000 |
| 摘 要： | 为提高坚硬厚煤层放顶煤开采回采率,本研究借助FLAC3D数值分析手段,对采用爆破技术弱化顶煤的参数进行数值模拟,最终获得装药量与煤岩体破坏程度、对钻孔周围介质的扰动频率、在钻孔周围介质中引起的剪应力大小三方面规律,为煤矿现场顶煤弱化爆破参数选择提供依据。 |
| 关 键 词： | 破岩效果 爆破参数 煤矿开采 数值分析 |
Numerical analysis on the blasting parameters of top coal weakening |
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| LI Leidong,LI Wenqing. Numerical analysis on the blasting parameters of top coal weakening[J]. Journal of North China Institute of Science and Technology, 2011, 0(4): 33-37 | |
| Authors: | LI Leidong LI Wenqing |
| Affiliation: | 1.Xi＇an science and technology university,Xi＇an ShanXi 710054; 2.Ordos coal mine safety supervision sub-bureau,Ordos Inner Mongolia 017000) |
| Abstract: | In order to improve mining rate of top coal caving in hard thick coal seam,the blasting parameters of top coal weakening have been researched by FLAC3D numerical analysis in this paper,as the result,the three aspects laws about charge weight with degree of rock and coal damage,perturbation frequency of hole material and shear stress value have contained.The research conclusion will provide according for choosing top coal weakening blasting parameters in coal mine. |
| Keywords: | Rock breaking efficiency blasting parameters coal mining numerical analysis |
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