基于实测资料的临江岸坡监控指标及安全评判方法研究

发布时间：2018-05-26 23:33

本文选题：临江岸坡 + 指标体系　；参考：《合肥工业大学》2017年硕士论文

【摘要】：临江岸坡是重要且广为分布的工程项目,它的稳定状况事关人类生命财产安全,有时甚至关系到国家的经济和社会的发展。因此,及时获取掌握临江岸坡的安全状态是十分紧迫和重要的。当前,大多数边坡工程建立边坡安全监测系统对边坡的位移、渗压、降雨等信息进行监测,并利用这些监测信息对边坡安全进行综合评判。由于长江河势变化明显,沿江地质环境复杂,相互影响因素多,目前的技术水平还难以准确获取临江岸坡运行状态的全部信息。如何结合临江岸坡监测项目建立其监控指标体系并逐步展开临江岸坡安全评判成为当前急需探讨的问题。本文以临江岸坡为研究对象,结合已有边坡监测经验,分析影响临江岸坡安全的主要影响因素,构建以突出且具代表性的位移、渗压、水位和降雨为指标的监控指标体系,通过模糊综合评价原理对临江岸坡安全评判方法进行研究并构建安全评判多层结构体系;对体系中不同层次不同种类的评判指标采用合理方式划分评判等级,依据各指标等级划分及其实测资料分布规律,确定各指标隶属函数;利用主观客观相结合的方式对各指标进行赋权,分析临江岸坡综合评判向量,确定临江岸坡安全评判等级,实现临江岸坡安全评判全过程。本文采用相关系数法选取参与建模的影响因子,并建立回归统计因果模型对临江岸坡位移、渗压进行预测,根据历史监测资料和预测信息,结合综合评判方法对临江岸坡后期状态进行预评判。以某段岸坡为实例,对该岸坡进行安全评判及预评判,实例应用表明,临江岸坡模糊综合评判模型及临江岸坡预评判模型合理可行,对岸坡工程运行管理具有一定的指导意义。
[Abstract]:The bank slope near the river is an important and widely distributed engineering project. Its stability is related to the safety of human life and property, and sometimes even to the economic and social development of the country. Therefore, it is very urgent and important to grasp the safety state of riverside bank in time. At present, most slope engineering establish slope safety monitoring system to monitor slope displacement, seepage pressure, rainfall and other information, and use these monitoring information to comprehensively judge slope safety. Due to the obvious variation of the Yangtze River regime, the complex geological environment along the Yangtze River, and many factors affecting each other, it is difficult to accurately obtain all the information about the running state of the bank slope along the Yangtze River at present. How to establish its monitoring index system combined with the riverside slope monitoring project and gradually launch the safety evaluation of the riverside slope has become a problem that needs to be discussed urgently at present. In this paper, taking the bank slope along the river as the research object, combined with the existing slope monitoring experience, the main influencing factors affecting the safety of the bank slope along the river are analyzed, and the monitoring index system with the prominent and representative indexes of displacement, seepage pressure, water level and rainfall is constructed. Based on the fuzzy comprehensive evaluation principle, this paper studies the safety evaluation method of the bank slope along the river and constructs the multi-layer structure system of safety evaluation, and classifies the evaluation grade of different levels and different kinds of evaluation indexes in the system in a reasonable way. According to the classification of each index grade and the distribution law of the measured data, the subordinate function of each index is determined, the index is empowered by the combination of subjective and objective methods, the comprehensive evaluation vector of the riverside slope is analyzed, and the safety evaluation grade of the riverside slope is determined. The whole process of safety evaluation of bank slope near the river is realized. In this paper, the correlation coefficient method is used to select the influencing factors involved in the modeling, and the regression statistical causality model is established to predict the displacement and seepage pressure of the bank slope along the river, according to the historical monitoring data and forecast information. Combined with the comprehensive evaluation method, the state of the bank slope along the river is evaluated in advance. Taking a certain section of bank slope as an example, the safety evaluation and pre-evaluation of the bank slope are carried out. The application of the example shows that the fuzzy comprehensive evaluation model and the pre-evaluation model of the bank slope near the river are reasonable and feasible, and have certain guiding significance for the operation and management of the bank slope project.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV698.1;TV861

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