| 煤层倾角与覆岩变形破裂分带 |
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| 引用本文： | 杜时贵,翁欣海.煤层倾角与覆岩变形破裂分带[J].工程地质学报(英文版),1997,5(3):211-217. |
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| 作者姓名： | 杜时贵 翁欣海 |
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| 作者单位： | 1.浙江工业大学,杭州310014; |
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| 摘 要： | 地下采煤中三带(冒落带、裂隙带、弯曲带)高度的判断是预测采空引起地表变形破坏程度的依据。在诸多的影响因素中, 煤层倾角是控制三带高度的最主要因素。建立在实测统计基础上的经验范围值用于三带高度的判断带有一定的人为性。急倾斜煤层中冒落带和裂隙带高度随煤层倾角变化的规律已被褐示7].通过弹塑性岩石材料的非线性有限元模拟, 本文提出了利用应力重分布图判断中、缓倾角煤层采空区覆岩三带高度的方法, 并应用于实际工程。
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| 关 键 词： | 冒落带 煤层 倾角 地表变形破坏 非线性有限元模拟 |
| 收稿时间： | 1996-06-03 |
RELATIONSHIP BETWEEM DIP ANGLE OF COAL SEAM AND HEIGHT OF THREE ZONES |
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| Du Shigui.RELATIONSHIP BETWEEM DIP ANGLE OF COAL SEAM AND HEIGHT OF THREE ZONES[J].Journal of Engineering Geology,1997,5(3):211-217. |
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| Authors: | Du Shigui |
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| Institution: | 1.Zhejiang University of Technology, Hangzhou 310014;2.Zhejiang Institute for Water and Conservancy and Hydropower Surveying and Design, Hangzhou 310014 |
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| Abstract: | Determination of heights of three zones(inbreak, crack, and bent zones) of mined out area provides a basis for predicting deformatiom and fracture of earths surface. Among several factors,dip angle of coal seam is the most important factor affecting the height of the three zones. Determination of heights of three zones from experience data if of certain artificial character. Relationship between height of inbreak zone and fracture zone and dip angle of steeply dipping coal seam has been discussed. In the paper, a method for determination of heights of three zones through analsysing redistrbution of gragh of stress which if obataine from non linear finite element simulation in moderately and gently dipping seam is proposed. Then, we predict the heights of three zones in two by this method. |
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| Keywords: | Heights of Three Zones Inclination of coal Deformation and Damage of Earth Surface Non linear Finite Element Simulation |
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