Research on support bearing and top coal stability of fully mechanized caving face in deep mine

机译：深井综放工作面支护与顶煤稳定性研究。

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On the basis of geological and production conditions of 34223 fully mechanized caving face in Quantai coal mine, the distribution of displacement field of top coal deformation is analyzed by means of UDEC3.0 numerical calculating method, which indicates that the top coal deformation shows a characteristic of front-to-back dynamic unstable areas. And the impact of support rigidity and rotation angle of main roof on support bearing and on top coal deformation is investigated. Last, the feasibility of light-duty support used in fully mechanized caving face is also analyzed.

机译：根据泉台煤矿34223综放工作面的地质及生产条件，采用UDEC3.0数值计算方法对顶煤变形位移场分布进行了分析，表明顶煤变形具有一定的特征。前后动态不稳定区域。并研究了主顶板支承刚度和旋转角度对支承支座和顶煤变形的影响。最后，还分析了轻型支架在综放工作面中使用的可行性。

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来源
《International Symposium on Mining Science and Technology; 20041020-22; Xuzhou(CN)》|2004年|P.73-76|共4页
会议地点 Xuzhou(CN)
作者
Changyou Liu; Peiju Yang; Zhijun Wan; Fengfeng Wu;
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作者单位

China University of Mining Technology, Xuzhou, Jiangsu, China;

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原文格式 PDF
正文语种 eng
中图分类矿山开采;
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1. Hydraulic support stability control of fully mechanized top coal caving face with steep coal seams based on instable critical angle [J] . TO Shi-hao, YUAN Yong, LI Nai-liang, 煤炭学报：英文版 . 2008,第003期

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3. Analysis of the Progressively Enhanced Mine Pressure in the Fully Mechanized Top Coal Caving Work Face of a 20?m Ultra-Thick Coal Seam [J] . Shi Jiulin, Yan Shaohong, Xu Zhuhe, Shock and vibration . 2021,第a期

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4. The failure law and support technique for fully-mechanized top-coal caving working face in extra-thick coal seams in deep coal mines [C] . J.X.Ren, F.Yang ISRM Young Scholars Symposium on Rock Mechanics . 2015

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5. Mines, miners, and machines: Coal mine mechanization and the eastern Kentucky coal fields, 1890-1990. [D] . Napier, Jerry Wayne. 1997

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Research on support bearing and top coal stability of fully mechanized caving face in deep mine

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