基于模糊综合评价法的尾矿坝稳定性评价研究
发布时间:2018-04-27 13:21
本文选题:尾矿坝 + 稳定性 ; 参考:《东华理工大学》2014年硕士论文
【摘要】:尾矿坝作为尾矿库系统中最为重要的构筑物设施,尾矿坝的稳定性往往决定了一个尾矿库是否能安全运行。一旦尾矿坝溃坝或则失效,不仅会给国家造成巨大的经济损失,而且还会危及尾矿库下游地区居民的生命安全和影响尾矿库区周边生态环境,所以对尾矿坝的稳定性评价进行研究是非常有意义和价值的。本文从尾矿坝自身结构特点和其外界影响因素两个方面出发,结合实际尾矿坝工程应用,通过分析尾矿坝各类溃坝方式及其产生原因,确定了影响尾矿坝稳定性的六个主要方面:初期坝、堆积坝、排洪系统、排渗系统、自然因素和管理因素,并从这六个主要方面出发,进一步分析了关于这六个方面的19个尾矿坝稳定性评价指标,这其中包括了10个定性指标和9个定量指标,构建了尾矿坝稳定性评价的评价指标体系。借鉴边坡和相关行业的工程稳定性评价经验,并结合尾矿坝实际工程,综合考虑多方面因素,构建了尾矿坝稳定性评价的评价等级集,这样对尾矿坝的稳定性运行状况有了更直观的认识。评价指标体系和评价等级集共同构成了尾矿坝稳定性评价的评价体系。在尾矿坝稳定性评价模型建立中,应用层次分析法构建了尾矿坝稳定性评价的结构体系,通过模糊综合评价法和借鉴边坡行业工程稳定性评价已有的研究成果和经验,对尾矿坝稳定性各评价指标的相对重要度(权重)进行确定,并以此建立了基于模糊综合评价法的尾矿坝稳定性评价模型。通过实际尾矿坝工程实例,以上饶713矿尾矿库中的尾矿坝为研究对象,应用文中所建立的基于模糊综合评价法的尾矿坝稳定性评价模型对该尾矿坝工程进行稳定性评价,将评价结果与实际监测资料对比验证。
[Abstract]:Tailings dam is the most important structural facility in the tailings storage system. The stability of the tailing dam often determines whether a tailings dam can operate safely or not. Once the tailings dam breaks or fails, it will not only cause huge economic losses to the country, but also endanger the lives of the residents in the downstream area of the tailings reservoir and affect the surrounding ecological environment of the tailings reservoir area. So it is very meaningful and valuable to study the stability evaluation of tailings dam. In this paper, based on the structural characteristics of tailings dam and its external influence factors, combined with the practical application of tailings dam, this paper analyzes the various types of dam break and its causes. Six main aspects affecting the stability of tailings dam are determined: initial dam, accumulative dam, flood discharge system, seepage discharge system, natural factors and management factors, and from these six main aspects, Further, 19 evaluation indexes of tailing dam stability in these six aspects are analyzed, which include 10 qualitative indexes and 9 quantitative indexes, and the evaluation index system of tailing dam stability evaluation is constructed. Based on the experience of engineering stability evaluation of slope and related industries and combined with the actual project of tailings dam, the evaluation grade set of tailing dam stability evaluation is constructed by considering many factors synthetically. In this way, there is a more intuitive understanding of the stability of the tailings dam. The evaluation index system and evaluation grade set constitute the stability evaluation system of tailings dam. In the process of establishing the stability evaluation model of tailings dam, the structural system of tailing dam stability evaluation is constructed by using the analytic hierarchy process (AHP). By using the fuzzy comprehensive evaluation method and drawing lessons from the existing research results and experience of slope engineering stability evaluation, The relative importance (weight) of each evaluation index of tailing dam stability is determined, and the stability evaluation model of tailings dam based on fuzzy comprehensive evaluation method is established. Taking the tailings dam in the tailings dam of Shangrao 713 mine as the research object, the stability evaluation model of the tailings dam based on the fuzzy comprehensive evaluation method established in this paper is used to evaluate the stability of the tailings dam project. The evaluation results are compared with the actual monitoring data.
【学位授予单位】:东华理工大学
【学位级别】:硕士
【学位授予年份】:2014
【分类号】:TV649
【参考文献】
相关期刊论文 前1条
1 孙树海;曹兰柱;张立新;;露天矿边坡稳定性的模糊综合评判[J];辽宁工程技术大学学报;2007年02期
,本文编号:1810897
本文链接:https://www.wllwen.com/kejilunwen/shuiwenshuili/1810897.html