摘要
露天矿边坡潜在破坏模式的识别仍然值得深入研究。基于距离判别分析理论,结合露天矿边坡失稳的特点,选取岩石单轴抗压强度、结构面倾角、结构面与边坡面的位置关系、地下水条件、岩体结构类型、黏聚力、内摩擦角、边坡高度、边坡角等9个因素作为判别露天矿边坡潜在破坏模式的指标,建立露天矿边坡潜在破坏模式识别的距离判别分析模型。以21个典型露天矿边坡的信息作为学习样本进行训练,建立相应的判别函数进行识别,并以回代估计法对该模型进行检验。研究结果表明,经过学习后的模型误判率为0.05,即判别能力是高的。用所建立的模型判别某露天矿边坡的失稳模式,判别结果和期望结果比较符合。
It was held that identification of open-pit slope potential failure mode is still worth studying deeply. Based on the theory of distance discriminant analysis and the characteristics of open-pit slope instability, nine factors, including the uniaxial compressive strength of rock, structural plane angle, the position of structural plane slope plane, groundwater condition, type of rock mass structure, cohesion, internal friction angle, slope height, and slope angle, were selected as identification indexes of the mode, and a distance discriminant analysis model was built for identifying the potential failure mode of open-pit slope. Linear discriminant fuctions were obtained through training with information on 21 typical open-pit slopes. The resubstitution method was used to varify the identification ability of the model. The research results show that the misjudge rate of the model is 0. 05 and the diseriminant ability is high. The model was applied to a certain open-pit slope instability mode discrimination, and the result conforms to the expected one.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2012年第8期124-130,共7页
China Safety Science Journal
基金
国家自然科学基金资助(50934006)
关键词
露天矿边坡
破坏模式
距离判别
边坡失稳
识别方法
open-pit slopes
failure mode
distance discrimination
slope unstability
identification method
