| 煤层底板突水突变模型 |
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| 引用本文： | 王连国, 宋扬. 2000: 煤层底板突水突变模型. 工程地质学报, 8(2): 160-163. |
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| 作者姓名： | 王连国 宋扬 |
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| 作者单位： | 1.山东科技大学,泰安271019 |
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| 基金项目： | 国家自然科学基金资助! (批准号 :5 97740 0 1) |
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| 摘 要： | 本文建立了煤层底板突水的一个尖点突变 (cusp)模型 ,并分析了煤层底板失稳破坏发生突水的机制。基于定态曲面方程 ,可求得煤层底板水压应力比 Ip。当 Ip 1时 ,发生突水 ;当 Ip 1时 ,不会发生突水。基于分支曲线方程 ,可求得煤层底板突水临界采动导水裂隙带深度 h1l,当 h1 h1l 时 ,发生突水 ;当 h1 h1l 时 ,不会发生突水。
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| 关 键 词： | 煤层底板 突水 尖点突变模型 |
| 收稿时间： | 1998-12-14 |
| 修稿时间： | 1998-12-14 |
A CATASTROPHIC MODEL OF WATER-INRUSH FROM COAL FLOOR |
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| WANG Lian-guo, SONG Yang. 2000: A CATASTROPHIC MODEL OF WATER-INRUSH FROM COAL FLOOR. JOURNAL OF ENGINEERING GEOLOGY, 8(2): 160-163. |
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| Authors: | WANG Lian-guo SONG Yang |
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| Affiliation: | 1.Shandong University of Science and Technology, Tai′an 271019 |
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| Abstract: | A cusp catastrophic model of water-inrush from coal floor is established and a mechanism for water inrush due to the floor instability and destruction is analysed in the paper. The ratio of water pressure and stress, I p, can be derived from the model. When I p>1,water-inrush from the floor can be caused. When I p<1, water-inrush from coal floor can not be caused. The critical depth of the mining water-conducting fissure zone, h 1l, for water inrush from coal floor can be derived from the bifurcation curve equation. When h 1>h 1l, water inrush from coal floor can be caused. When h 1
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| Keywords: | Coal floor Water-inrush Cusp catastrophic model. |
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