基于模糊RES-云模型的坝基岩体可灌性评价研究

发布时间：2018-06-24 11:14

本文选题：大坝基岩灌浆 + 可灌性　；参考：《水利学报》2017年11期

【摘要】：岩体可灌性分析与评价是大坝基岩灌浆的重点和难点,科学合理的可灌性评价对保证灌浆效果具有重要理论与工程意义。目前涉及坝基岩体可灌性的研究中缺乏多影响因素下的岩体可灌性分析,同时亦未能够考虑评价过程中的不确定性问题。针对上述问题,提出基于模糊RES(岩石工程系统Rock Engineering System)-云模型的坝基岩体可灌性综合评价方法。首先,在系统分析影响岩体可灌性的相关因素的基础上,选取地质条件、浆液性质以及灌浆工艺等方面的12个因素构建评价指标体系;其次,基于RES理论从系统的角度科学合理地确定评价因子的重要性程度,并引入模糊理论克服RES方法中对主观因素的依赖,获取指标权重;再者,利用云模型考虑岩体可灌性评价过程中的随机性和模糊性的特点实现可灌性等级与评价指标值之间的不确定映射;最后,将基于模糊RES-云模型的综合评价方法应用于国内某大型水电工程,结果表明该方法具有较高的准确性和可靠性。
[Abstract]:The analysis and evaluation of rock mass irrigability is the key and difficult point of dam bedrock grouting. Scientific and reasonable evaluation of grouting ability has important theoretical and engineering significance to ensure grouting effect. At present, there is a lack of rockmass irrigability analysis under the influence of many factors in the research of dam foundation rockmass irrigability. At the same time, the uncertainty in the evaluation process can not be considered at the same time. In view of the above problems, a comprehensive evaluation method of dam foundation rockmass irrigability based on fuzzy res (Rock Engineering system)-cloud model is proposed. Firstly, on the basis of systematic analysis of the related factors affecting the irrigability of rock mass, 12 factors including geological conditions, slurry properties and grouting technology are selected to construct the evaluation index system. Based on res theory, the importance degree of evaluation factor is determined scientifically and reasonably from the point of view of system, and fuzzy theory is introduced to overcome the dependence of subjective factors in res method, and the index weight is obtained. Considering the characteristics of randomness and fuzziness in the evaluation process of rockmass irrigability, the uncertain mapping between the grade of irrigability and the evaluation index value is realized by using cloud model. Finally, The comprehensive evaluation method based on fuzzy RES- cloud model is applied to a large hydropower project in China. The results show that the method has high accuracy and reliability.
【作者单位】：天津大学水利工程仿真与安全国家重点实验室;
【基金】：国家自然科学基金项目(51439005,51339003);国家自然科学基金创新群体基金项目(51621092)
【分类号】：TV543

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