| 地形对水平岩层自重成因地应力场的影响 |
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| 引用本文： | 陶波,伍法权,郭改梅.地形对水平岩层自重成因地应力场的影响[J].煤田地质与勘探,2006,34(1):34-37. |
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| 作者姓名： | 陶波 伍法权 郭改梅 |
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| 作者单位： | 1. 石油大学(北京)资源与信息学院,北京,102249;中国科学院地质与地球物理研究所,北京,100029
2. 中国科学院地质与地球物理研究所,北京,100029 |
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| 摘 要： | 通过极坐标系下的艾里应力函数法,求解出在集中力作用下水平岩层中各应力分量。山体对其下伏岩层可作为分布载荷,对集中力作用下水平岩层中各应力分量积分,便求得山体对下伏水平岩层的附加应力。已有研究成果表明,当由外载引起的附加应力小于由重力引起的静止侧压力的20%时,则可以不考虑外载的影响,这样便导出了地形对自重应力影响深度所满足的函数关系式。此外,本文举例说明了如何求得地形对水平均质各向同性水平岩层的自重应力场的影响深度。
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| 关 键 词： | 地形 自重应力场 影响深度 弹性力学 |
| 文章编号： | 1001-1986（2006）01-0034-03 |
| 收稿时间： | 2004-04-21 |
| 修稿时间： | 2004年4月21日 |
Topography's influence on self-weight stress field of horizontal rock formation |
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| TAO Bo,WU Fa-quan,GUO Gai-mei.Topography''''s influence on self-weight stress field of horizontal rock formation[J].Coal Geology & Exploration,2006,34(1):34-37. |
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| Authors: | TAO Bo WU Fa-quan GUO Gai-mei |
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| Institution: | 1. Institution of Information and Resource, Petroleum University, Beijing 102249, China ; 2. Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China |
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| Abstract: | Author presents stress component's expression under polar coordinate while a single force is applied to horizontal rock formation by means of Airy's stress function.Author regards topography's effect on underlying horizon rock formation as distributed load,thus obtains expression of subsidiary stress induced by distributed load by integral action.According to present achievement,when subsidiary stress caused by distributed load is less than 20 percent of static lateral pressure induced by gravitation,distributed load's effect may be ignored. Therefore,the expression of topograpthy influence depth on self-weight stress field is obtained.Furthermore,the paper illustrates how to obtain topography influence depth on self-weight stress field of horizontal,homogeneous and isotropic strata. |
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| Keywords: | topography self-weight stress field influence depth elastic mechanics |
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