缓倾顺层岩质边坡变形机制分析及防治措施研究

发布时间：2018-06-12 19:45

本文选题：缓倾顺层岩质边坡 + 变形机制　；参考：《重庆大学》2014年硕士论文

【摘要】：随着城镇化建设以及西部大开发战略的推进，催生了大量的工程建设。由于我国是多山的国家，岩质边坡工程的数量和规模相应增多。调查表明较多的顺层岩质边坡在开挖后，如无及时正确的防护措施，则边坡发生破坏的可能性大大增加。当前专门针对缓倾顺层岩质边坡的研究比较少，深入研究缓倾顺层岩质边坡的变形机制及其防治措施显得尤为重要。本文结合实际工程采用理论分析和数值模拟，对缓倾顺层岩质边坡的变形机制进行研究，在此基础上提出合理的支护措施，，并进行实际监测分析。论文主要进行的工作如下: ①对缓倾顺层岩质边坡变形破坏机制、主要分析方法以及防治措施的研究现状进行较为完整的文献综述，并在此基础上提出本文的主要研究内容以及技术路线。 ②通过理论分析得出缓倾顺层岩质边坡变形破坏的机理，对缓倾顺层岩质边坡进行受力计算分析，在此基础上推导边坡变形破坏的开挖松动区范围。系统研究了影响缓倾顺层岩质边坡稳定性的因素以及软弱结构面对边坡变形破坏的主导作用。 ③利用ANSYS有限元软件以实际工程中的缓倾顺层岩质边坡为例建立数值模型。分析该边坡的变形破坏模式及其演变过程，将数值计算结果与理论分析进行比较和分析后得出缓倾顺层岩质边坡的变形破坏机制。 ④总结目前常见的缓倾顺层岩质边坡的防治措施，结合本文实际工程的特点提出对拉锚索的支护形式，以及“双控法”的施工工艺，并进行长期的现场监测，根据监测的结果分析防治措施的效果，并总结相关结论。综上所述，本文理论研究的结果和数值模拟反映的规律基本一致。运用理论研究和数值模拟的相关结论于实际的工程。长期的现场监测反映了已实施工程的效果。本文的研究成果对相似工程的设计和施工具备一定参考价值。
[Abstract]:With the development of urbanization and western development strategy, a large number of engineering projects have been spawned. As China is a mountainous country, the quantity and scale of rock slope engineering increase correspondingly. The investigation shows that if more bedding rock slopes are excavated without timely and correct protective measures, the possibility of slope failure will be greatly increased. At present, there are few researches on the rock slope of gently inclined bedding, so it is very important to study the deformation mechanism and prevention measures of the rock slope. In this paper, theoretical analysis and numerical simulation are used to study the deformation mechanism of rock slope of gently inclined bedding, on the basis of which reasonable supporting measures are put forward and actual monitoring analysis is carried out. The main work of this paper is as follows: 1 A complete literature review is made on the mechanism of deformation and failure, the main analysis methods and the prevention measures of gently inclined bedding rock slope. On this basis, the main research contents and technical route of this paper are put forward. (2) through theoretical analysis, the deformation and failure mechanism of gently inclined bedding rock slope is obtained, and the stress calculation of gently inclined bedding rock slope is carried out. On this basis, the range of excavation loosening zone of slope deformation and failure is deduced. The factors affecting the stability of gently inclined bedding rock slope and the dominant role of weak structure in the face of slope deformation and failure are studied systematically. 3 using ANSYS finite element software, the rock slope of gently inclined bedding is used in practical engineering. A numerical model is established with an example. The deformation and failure mode and its evolution process of the slope are analyzed. By comparing and analyzing the numerical results with the theoretical analysis, the deformation and failure mechanism of the rock slope with gently inclined bedding is obtained. 4 the prevention and cure measures of the rock slope of the gently inclined bedding are summarized. Combined with the characteristics of the actual project in this paper, the supporting form of the anchor cable and the construction technology of the "double control method" are put forward, and the long-term field monitoring is carried out. According to the monitoring results, the effect of the preventive measures is analyzed, and the relevant conclusions are summarized. In conclusion, the theoretical results of this paper are basically consistent with the laws reflected by numerical simulation. The relevant conclusions of theoretical research and numerical simulation are used in practical engineering. Long-term field monitoring reflects the effect of the project. The research results of this paper have certain reference value for the design and construction of similar engineering.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU457

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