某露天矿山高边坡稳定性分析模型
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摘要
为研究某露天矿山边坡稳定性,以未确知测度理论和层次分析法(AHP)为基础,建立露天矿山边坡稳定性分析数学模型。模型中综合考虑影响露天矿山边坡稳定性的各种因素,如岩石单轴饱和抗压强度、内摩擦角、黏聚力、岩石质量指标、台阶坡面角、露天采场最终边坡高度、岩石风化程度、岩石完整程度,然后通过层次分析法计算各指标权重,并按照置信度识别准则获得最终稳定性评价等级。将此分析模型应用到云南某石灰石露天矿山中。分析结果表明,该露天矿山边坡为稳定边坡。同时利用Midas/GTS NX对该边坡进行模拟分析,得到安全系数为5.224 2,属于稳定边坡。2种分析方法结果基本一致,进而论证数学模型的可靠性,同时为露天矿山边坡稳定性分析提供一种新的方法。
In order to study the slope stability of an open-pit mine,a mathematical model for slope stability analysis of open-pit mine was established based on uncertainty measurement theory and Analytic hierarchy process(AHP).In the model,various factors affecting slope stability in open-pit mine are comprehensively considered,such as,uniaxial saturated compressive strength of rock,angle of internal friction,cohesive force,rock quality index,step slope angle,final slope height of open-pit,degree of rock weathering,rock integrity.Then calculating the weight of each index by AHP and obtaining the final stability evaluation grade according to the confidence recognition criteria.The model is applied to a limestone open-pit mine in Yunnan Province,and the result shows that the slope is stable.Meanwhile,Midas/GTS NX was used to simulate and analyze the slope,and the safety factor was 5.224 2,which was a stable slope.The results of the two methods are basically consistent,which further proves that the mathematical model is reliable and a new method is provided for the slope stability of open-pit mine.
In order to study the slope stability of an open-pit mine,a mathematical model for slope stability analysis of open-pit mine was established based on uncertainty measurement theory and Analytic hierarchy process(AHP).In the model,various factors affecting slope stability in open-pit mine are comprehensively considered,such as,uniaxial saturated compressive strength of rock,angle of internal friction,cohesive force,rock quality index,step slope angle,final slope height of open-pit,degree of rock weathering,rock integrity.Then calculating the weight of each index by AHP and obtaining the final stability evaluation grade according to the confidence recognition criteria.The model is applied to a limestone open-pit mine in Yunnan Province,and the result shows that the slope is stable.Meanwhile,Midas/GTS NX was used to simulate and analyze the slope,and the safety factor was 5.224 2,which was a stable slope.The results of the two methods are basically consistent,which further proves that the mathematical model is reliable and a new method is provided for the slope stability of open-pit mine.
引文
[1] 王玉平,曾志强,潘树林.边坡稳定性分析方法综述[J].西华大学学报(自然科学版),2012(2):101-105.
[2] 王光远.论未确知性信息及其数学处理[J].哈尔滨建筑工程学院学报,1990,23(4):52-58.
[3] 李俊芳,吴小萍.基于AHP—FUZZY多层次评判的城市轨道交通线网规划方案综合评价[J].武汉理工大学学报,2007,4(2):205-208.
[4] 宫凤强,李夕兵,董陇军,等.基于未确知测度理论的采空区危险性评价研究[J].岩石力学与工程学报,2008,27(2):323-330.
[5] 黄贯虹,方刚.系统工程方法与应用[M].广州:暨南大学出版社,2005.
[6] 刘开第,庞彦军,孙光勇,等.城市环境质量的未确知测度评价[J].系统工程理论与实践,1999,19(12):52-58.
[7] 帅红岩,韩文喜,赵晋乾.Midas/GTS软件在边坡三维稳定分析中的应用[J].地质灾害与环境保护,2009,20(3):104-107.
[8] 郑颖人,陈祖煜.边坡与滑坡工程治理[M].北京:人民交通出版社,2007.
[2] 王光远.论未确知性信息及其数学处理[J].哈尔滨建筑工程学院学报,1990,23(4):52-58.
[3] 李俊芳,吴小萍.基于AHP—FUZZY多层次评判的城市轨道交通线网规划方案综合评价[J].武汉理工大学学报,2007,4(2):205-208.
[4] 宫凤强,李夕兵,董陇军,等.基于未确知测度理论的采空区危险性评价研究[J].岩石力学与工程学报,2008,27(2):323-330.
[5] 黄贯虹,方刚.系统工程方法与应用[M].广州:暨南大学出版社,2005.
[6] 刘开第,庞彦军,孙光勇,等.城市环境质量的未确知测度评价[J].系统工程理论与实践,1999,19(12):52-58.
[7] 帅红岩,韩文喜,赵晋乾.Midas/GTS软件在边坡三维稳定分析中的应用[J].地质灾害与环境保护,2009,20(3):104-107.
[8] 郑颖人,陈祖煜.边坡与滑坡工程治理[M].北京:人民交通出版社,2007.