基于卸加载响应比的滑坡稳定状态评价与划分  

The Evaluation and Division of the State of Landslide Stability Based on Unload-Load Response Ratio

作　　者：陈为公[1,2] 贺可强 张娟[3] 

机构地区：[1]青岛理工大学管理学院,山东青岛266520 [2]山东省地质环境与效应工程技术研究中心,山东青岛266033 [3]中国矿业大学(北京)地球科学与测绘工程学院,北京100083

出　　处：《灾害学》2013年第3期1-5,共5页Journal of Catastrophology

基　　金：国家自然科学基金(40872184);山东省自然科学基金(ZR2011DL002);教育部高等学校博士学科点专项科研基金(20113721110002);青岛市社会科学规划项目(QDSKL130144)

摘　　要：为有效评价与预测滑坡的稳定状态,提出基于卸加载响应比参数的滑坡稳定状态划分的新方法。在阐述卸加载响应比理论内涵的基础上,从损伤力学角度探讨并建立了卸加载响应比与损伤变量的相互关系,并进一步通过分析滑坡稳定安全系数与损伤变量之间的相互关系,建立了卸加载响应比与滑坡稳定安全系数的定量关系。参照相关规范和标准,以卸加载响应比值划分了滑坡稳定状态区间。并以新滩滑坡为例,计算所得卸加载响应比所对应的滑坡稳定状态与实际情况相吻合。说明可以用卸加载响应比参数对滑坡稳定状态进行评价,它与滑坡稳定安全系数一样具有理论和实际应用价值。In order to effectively evaluate and predict the stability of landslide, a new method of dividing the state of landslide stability based on unload-load response ratio is put forward. On the basis of elaborating connota- tion of unload-load response ratio theory, the interrelation of the unload-load response ratio and damage variable is discussed and established from the angle of damage mechanics. And then, through the analysis of the relationship between landslide stability safety factor and ratio and stability safety factor of landslide s damage variable, the quantitative relationship of unload-load response tability is established. With reference to the relevant norms and stand- ards, intervals of landslide stability state are divided according to the value of Unload-load response ratio. Xintan landslide is taken as an example, and the calculation results are showed. Landslide stability state, that unload-load response ratio calculated is corresponding to, coincided with the actual situation. The results show that unload-load response ratio parameters can be used to evaluate the state of landslide stability, the unload-load response ratio pa- rameters have theoretical and practical value as same as safety factors.

关 键 词：卸加载响应比 滑坡稳定状态 安全系数 损伤变量 

分 类 号：P642.22[天文地球—工程地质学] X4[天文地球—地质矿产勘探]