| “软弱夹层”对坝基岩体稳定的影响 |
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| 引用本文： | 牟会宠
,石慧馨
,叶珍久.“软弱夹层”对坝基岩体稳定的影响[J].地质科学,1975,10(3):265-278. |
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| 作者姓名： | 牟会宠 石慧馨 叶珍久 |
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| 摘 要： | 大坝的安全一般受岩体稳定条件的控制。影响岩体稳定的地质因素较多,其中软弱结构面的影响极为重要。软弱结构面即夹有软弱物质的结构面,例如夹有泥质充填物的裂隙,夹有断层泥、糜稜岩、角砾岩的断层破碎带等。软弱夹层为软弱结构面的一种,即除夹有软弱物质这一特征外,在产状上大致和岩层产状一致,并和成岩作用有一定关系。含有泥质物的软弱夹层一般俗称为“泥化夹层”。
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THE INFLUENCE OF WEAK INTERBED ON THE STABILITY OF ROCK MASS OF DAM FOUNDATION |
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| Mu Huichong,Shi Huixin,Ye Zhenjiu.THE INFLUENCE OF WEAK INTERBED ON THE STABILITY OF ROCK MASS OF DAM FOUNDATION[J].Chinese Journal of Geology,1975,10(3):265-278. |
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| Authors: | Mu Huichong Shi Huixin Ye Zhenjiu |
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| Abstract: | By synthetic studies of the data obtained from the polaring microscope determita-tion, chemical analysis, differential thermal analysis, thermo-weight analysis, X-ray powder analysis and electron microscope observation and so on the substances composition of a weak interbed occurred in the dam foundation is determined to be mainly the quartz and sericite. The clay minerals are sericite and illite, as well as kaolinite and meta-halloysite.The detailed survey has been carried out for studing the occurrence, thickness and structural features of the weak interbed. Its engineering geologic characteristics, such as the physical, mechanical and hydro-physical properties have been determined in the laboratory. Moreover, the structure analysis of rock foundation with the weak interbed has been also made using the stereographic projection.On the basis of complex analysis of the above mentioned informations the influence of such weak interbed on the sliding and permeability stabilities is evaluated in this paper. |
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