【作者】 李祯；

【导师】 俞宗卫；

【作者基本信息】 长安大学 ， 结构工程， 2009， 硕士

【摘要】 随着我国基础建设事业的高速发展和西部大开发的进程,陕北地区能源的逐步开发,为解决西北地区电力问题,大量火电厂就近能源地区纷纷上马。由于能源开采与电厂对环境、人民的生活影响较大,所以电厂的建设地址相对偏僻,清水川电厂建设于三面环山,山体均为高边坡,为了电厂的安全运行,山体边坡需要治理。边坡本身就是一个地质体,只有从根本上认识边坡的工程地质条件、变形破坏机制才能彻底地解决边坡失稳的问题,也才能做到预防和避免高边坡病害的产生,确保建筑物的安全运行,所以,详细分析高边坡稳定性及其变形加固后的稳定性显得尤其重要。本文在前人研究的基础上,首先叙述了预应力锚索的发展概况、特点和应用范围,分析了锚索类型及其作用机理;其次,对预应力锚索在清水川电厂高边坡治理工程中应用情况进行了详细调查,分析采用预应力锚索加固高边坡的主要特征及具体加固形式;再次,针对预应力锚索加固高边坡变形的综合特点,对预应力锚索的施工及监控量测作了阐述,分别从施工组织设计、钻孔、锚索制作、安装、注浆、张拉、拉拔试验与监测等方面进行了分析论述,并应用有限元数值模拟来分析其稳定性,将数值模拟结果和实测值进行对比分析,对高边坡的加固效果和高边坡的长期稳定性做出最终评价,并提出了在实际施工过程中必须重视的问题,对预应力锚索施工具有一定指导意义;然后,探讨了预应力锚索锚固设计的倾角优化,较为详细地讨论了预应力锚索倾角设计计算方法,并应用有限元进行数值模拟,根据实际情况提出一些建议,供施工与设计参考;本文提出的方法和建议在清水川电厂边坡变形治理工程中得到了较好的应用,并取得了较佳的效果,具有一定的社会经济效益。更多还原

【Abstract】 As the high-speed development and the process of developing the western region of China’s infrastructure, the energy of Shanbei is developing step by step , and in order to solve the problem of electricity in Northwest, a large number of thermal power plants nearby the areas of energy have started . As the energy mined and electric power plants are going to impact on the environment, as well as impact on people’s lives .Therefore, the address of the power plants construction is relative remote. The Qingshuichuan power plant is constructing on three sides hills with high mountain slope to be managed .Slope is a geological body , only fundamental understanding of engineering geology of the slope、deformation and destroying mechanisms can completely solve the problem of slope instability , also could prevent and avoid the high slope of the disease and ensure the safe operation of the buildings . So, detailed analysis of the high slope and its stability of supporting structure is particularly important.This article is on the basis of previous studies .Firstly, It describes the development of the pre-stressed Anchor、the characteristics and the field of application , analyses the types of Anchor and its mechanism. Secondly ,I detailed investigated the pre-stressed Anchor in Qingshuichuan power plant slope treatment project in the application , analyzing the main features of the pre-stressed Anchor reinforcement slope and the form of concrete reinforcement. Once again, aiming at the comprehensive characteristics of the pre-stressed anchor reinforces the slope deformation, separately from the construction of organizational design, drilling, anchor production, installation, grouting, tension, pull-out test and monitoring were analyzed. And it applies the finite element numerical simulation to analyze its stability, analyzing the numerical simulation results and comparative of measured values.The Paper evaluates the reinforcement of the effect of high slope and high slope of the long-term stability, making a number of the actual construction process that should pay attention to the problems. Guided the construction of pre-stressed anchor is important. Then, the Paper discusses the design of pre-stressed anchor in the angle optimization, discussing in more details on the design of pre-stressed anchor angle calculation and the application of finite element numerical simulation, according to the actual situation to make some suggestion, which could provide for construction and design reference. Finally, this Paper presents some methods and Advices to be a better application of the slope treatment project of the power plant in Qingshuichuan, and has achieved better results, with a certain degree of social and economic benefits.更多还原