| 老顶周期断裂及顶板来压预报 |
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| 引用本文： | 蒋金泉.老顶周期断裂及顶板来压预报[J].山东科技大学学报(自然科学版),1989(2). |
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| 作者姓名： | 蒋金泉 |
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| 作者单位： | 山东矿业学院矿压研究所 |
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| 摘 要： | 本文建立了老顶周期断裂前后的弹性基础梁模型,分析了老顶断裂位置及其在采场前方的矿压显现。研究表明,老顶通常在煤壁前方断裂,断裂时煤体上出现“压缩—反弹—压缩”三个区域,利用相应的显现可成功预报顶板来压。文中讨论了有关因素对断裂位置及显现的影响。
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| 关 键 词： | 顶板 弹性基础 断裂 矿山压力 预报 |
THE PERIODIC FRACTURE OF MAIN ROOF AND THE PREDICTION OF ROOF WEIGHTING |
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| Jiang Jinquan.THE PERIODIC FRACTURE OF MAIN ROOF AND THE PREDICTION OF ROOF WEIGHTING[J].Journal of Shandong Univ of Sci and Technol: Nat Sci,1989(2). |
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| Authors: | Jiang Jinquan |
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| Institution: | Res. Inst. of Mine Press. |
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| Abstract: | This paper presents the elastic foundation-beam model around the periodic fracture of main roof and analyzes the fracture position of main roof and its pressure manifestation in front of the working face. The research demonstrates that the main roof fractures usually at the front of the face wall, and the three zones of "compression-bound back-compression" are revealed on the coal body while roof fracturing, therefore, weighting of roof can be predicted successfully making use of the corresponding roof behavior. The influence of the related fectors to the fracture position of main roof and its behavior are discussed in this paper |
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| Keywords: | Roof elastic foundation fracture 5 mine ground presstre prediction |
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