| 影响煤层构造变形特性与机理的关键因素 |
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| 引用本文： | 周建勋.影响煤层构造变形特性与机理的关键因素[J].煤田地质与勘探,1999,27(3):10-12. |
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| 作者姓名： | 周建勋 |
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| 作者单位： | 石油大学,昌平,102200 |
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| 摘 要： | ３个煤级的煤样高温高压实验结果表明，煤是一种温度敏感性较弱的岩石。影响煤层构造变形机理的关键因素是煤级，随煤级增高煤层塑性减弱、脆性增大。韧性变形主要发生在煤级较低的煤层，煤级较高煤层主要发生脆性变形。不能完全用煤层本虽度特性解释煤层容易发生强烈流变或成为拆离、滑脱层的现象，需考虑其它可能因素。
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| 关 键 词： | 煤层形变 机理 实验室研究 |
| 修稿时间： | 1998-11-16 |
KEY-FACTORS RELEVANT TO THE CHARACTERISTICS AND MECHANISMS OF STRUCTURAL DEFORMATION IN COAL SEAM |
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| Zhou Jianxun.KEY-FACTORS RELEVANT TO THE CHARACTERISTICS AND MECHANISMS OF STRUCTURAL DEFORMATION IN COAL SEAM[J].Coal Geology & Exploration,1999,27(3):10-12. |
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| Authors: | Zhou Jianxun |
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| Institution: | University of Petroleum |
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| Abstract: | Experimental results on three coal samples of different coal ranks indicate that coal is one kind of rock that is of low sensitivity to temperature.The key factor that affects deformation mechanisms of coalbed is temperature.As coal rank increases,plasticity of coal seam becomes weaker and its brittleness increases.Ductile mechanisms are dominated in the coalbed of low coal ranks,but in the coalbed of higher ranks brittle mechanisms are dominated.Strength characteristics of coal can not completely account for the phenomena that coalbed is easy to flow strongly and to be detachment zone.Another factors need to be taken into account for these phenomena. |
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| Keywords: | deformation of coal seam mechanism laboratory studies |
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