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检索条件"主题词=headgate"
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Ground response to high horizontal stresses during longwall retreat and its implications for longwall headgate support
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International Journal of Mining Science and Technology 2019年 第1期29卷 27-33页
作者: Peter Zhang Dave Gearhart Mark Van Dyke Daniel Su Essie Esterhuizen Berk Tulu NIOSH Pittsburgh Mining Research Division(PMRD) Department of Mining Engineering West Virginia University
Roof falls in longwall headgate can occur when weak roof and high horizontal stress are present. To prevent roof falls in the headgate under high horizontal stress, it is important to understand the ground response to... 详细信息
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