高烈度地震带尾矿坝体稳定性分析模型研究  

Study on the Stability of Tailings Dam in High Intensity Seismic Zone

作　　者：张茗涵 张海云 方前程[3] 周光宏 ZHANG Minghan;ZHANG Haiyun;FANG Qiancheng;ZHOU Guanghong(Department of Architectural Engineering,Zhumadian Vocational and Technical College,Zhumadian,Henan 463000»China;Changsha Institute of Mining Research Co.,Ltd,Changsha,Hunan 410012,China;Institute of Architecture and Engineering,Huanghuai University,Zhumadian,Henan 463000,China)

机构地区：[1]驻马店职业技术学院建筑工程系,河南驻马店市463000 [2]长沙矿山研究院有限责任公司,湖南长沙410012 [3]黄淮学院建筑工程学院,河南驻马店市463000

出　　处：《矿业研究与开发》2021年第1期105-110,共6页Mining Research and Development

基　　金：河南省科技攻关项目(172102310742);河南省高等学校重点科研项目(16A120015)。

摘　　要：为提高高烈度地震带尾矿坝体稳定性评估精度,引入云模型理论,建立了改进云模型综合评估模型。首先,从地震能量、防洪能力、坝体抗滑性、抗渗性和日常管理等5个方面,选取了地震峰值加速度、余震累积破坏效应、防洪系统能力系数、滩顶与正常库水位高差、中值粒径、下游坡比、渗透能力系数、颗粒级配、日常管理衡量系数、应急水平衡量系数等10个指标建立了高烈度地震带尾矿坝体稳定性综合评估指标体系。其次,采用改进层次分析法确定指标权重,基于最大隶属度原则,确定最终的稳定性等级。最后,将建立的改进云模型用于甘肃某尾矿坝体稳定性评价中,且与可拓学和属性识别两种评估模型对比。结果表明,改进云模型的评估结果与可拓学和属性识别模型评估结果一致,该尾矿坝体处于不稳定状态,且与实地调查结论相符合。同时采用Slide软件对该尾矿坝体进行模拟,研究显示地震作用下的最小安全系数为0.815,小于安全系数1.05,表明该综合评价模型具有一定科学性和可靠性。In order to improve the stability evaluation accuracy of tailings dam in high intensity seismic zone,the cloud model theory was introduced and the evaluation model based on improved cloud model was established.First of all,considering the five aspects of earthquake energy,flood control capacity,dam anti sliding,impermeability and daily management,the peak acceleration of earthquake,cumulative damage effect of aftershock,capacity coefficient of flood control system,water level difference between spreading top and normal reservoir,median particle size,downstream slope ratio,permeability coefficient,particle grading,daily management measurement coefficient and emergency level measurement coefficient were selected.And a comprehensive evaluation index system for the stability of tailings dam in high intensity seismic zone was established.Secondly,the improved AHP method was used to determine the index weight,and the final stability grade was determined based on the principle of maximum membership degree.Finally,the improved cloud model theory was applied to the stability evaluation of a tailings dam in Gansu Province,and compared with the two evaluation models of extension and attribute recognition.The results show that the evaluation results of the model established in this paper are consistent with those of extension science and attribute recognition model,and the tailings dam is in an unstable state,which is consistent with the conclusions of field investigation.At the same time,the Slide software is used to simulate the tailings dam body.The research shows that the minimum safety factor under the earthquake is 0.815,which is less than the safety factor of 1.05.The result indicates the scientificity and reliability of comprehensive evaluation model.

关 键 词：尾矿坝 云模型 改进层次分析法 高烈度地震带 稳定性 

分 类 号：TV312[水利工程—水工结构工程] TV649[水利工程—水利水电工程]