相关实验视频

Updated: May 20, 2025

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
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Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

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个别支元件对长墙道中屋顶稳定的贡献

Zoheir Khademian1, Morgan Sears1

  • 1Pittsburgh Mining Research Division, CDC NIOSH, Pittsburgh, PA, USA.

Mining, metallurgy & exploration
|March 24, 2025
PubMed
概括

屋顶的不稳定性导致美国长墙矿山中91%的地面控制事故. 结合式块建模 (BBM) 通过分析屋顶支相互作用来帮助优化屋顶支系统.

关键词:
结合式块模型的结合式块模型.进入屋顶的稳定性 进入屋顶的稳定性长城矿是我的一个长城矿.屋顶支的相互作用.三角形是三角形中的一个.

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Method of Sections: Problem Solving I01:27

Method of Sections: Problem Solving I

Consider a symmetrical roof truss structure, composed of vertical, diagonal, and horizontal members. The length of each horizontal member is 4 m. The lengths of the vertical members FB and HD are 4 m, while the length of member GC is 6 m. The loads acting at joints F, G, and H are 2 kN, while those at joints A and E are 1 kN.
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