露天矿排土场滑坡的可拓评价预警  

Extension evaluation and warning for waste dump landslide of open-pit mine

作　　者：栾婷婷[1] 谢振华[1] 吴宗之[2] 张雪冬[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]中国安全生产科学研究院,北京100029

出　　处：《中南大学学报（自然科学版）》2014年第4期1274-1280,共7页Journal of Central South University:Science and Technology

基　　金：国家"十二五"科技支撑计划项目(2012BAK09B05)

摘　　要：应用可拓学理论,建立基于物元和关联函数的排土场滑坡评价预警模型,选取黏聚力、内摩擦角、地基坡度、边坡高度、最大日雨量和地表裂缝6个预警指标,划分5级预警模式。研究结果表明:在评价指标权重的计算中,引入未确知有理数的概念,能提高预警模型的精度和效率。选取我国典型露天铁矿的排土场作为工程实例,经预警模型计算,该排土场滑坡预警等级的级别变量特征值为2.13,属于蓝色预警范围,该结果与矿山实际情况吻合较好,说明该模型对排土场滑坡灾害有较好的适用性;将可拓评价和未确知有理数及预警等级结合在一起建立的滑坡预警模型,具有简便、高效、准确的特点,为露天矿山排土场的滑坡预警提供了新的思路和手段。Extension theory was used to set up early-warning model for waste dump landslide based on matter-element theory and dependent function, and cohesive force, internal friction angle, foundation slope, slope height, maximum daily precipitation and surface crack selected as early-warning indicators, divided into five levels of warning. The results show that, in this model, the conception of the unascertained rational number can be used to the weight calculation of early-warning indicators, which can improve the accuracy and efficiency of the model. The model was put into a typical open-pit iron mine in China, variable characteristic value of early warning rank is 2.13, belonging to the blue warning, and the calculation result fits actual situation well, which presents that the model of early-warning has preferable applicability for waste dump landslide disaster. The landslide early-warning model combined extension evaluation, unascertained rational number and warning level, which has the characteristics of simple, efficient and accurate, and provides a new thought and method for early-warning of waste dump landslide in open-pit mine.

关 键 词：露天矿 排土场滑坡 指标体系 预警模型 可拓理论 未确知有理数 

分 类 号：O159[理学—数学]