基于安全熵的边坡稳定性分析
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摘要
熵的概念源于热力学,是一种多目标决策的有效方法,是系统不确定性的一个度量。熵已经广泛应用于众多学科,但是应用于地质学,尤其是用来进行边坡稳定性评价的实例却很少。作者基于关系矩阵及信息熵概念提出的边坡安全熵稳定性评价方法,有效地结合了关系矩阵对各种影响边坡稳定性因素的敏感性及信息熵对边坡紊乱度的量化优点,综合考虑边坡地质、环境及工程因素的基础上,对边坡的稳定性状态作出客观的评价。经在龙滩水电站左岸边坡工程稳定性评价中应用,并与解析计算分析及地质资料分析结果对比,具有很好的相应性。
Entropy originated from thermodynamics is an effective method of multi-objective decision and a measurement of system uncertainty.It is still not applied widely in geology especially in analysing the slope stability.So a new method for evaluating the slope stability is presented in this paper.It is based on the interaction matrix and information entropy.The new method combines the sensitivity of interaction matrix to each influencing factor on slope stability and the quantization of information entropy to the irregularity of slope.It can provide the objective result of slope stability using factors in geology,environmental and engineering.It has been shown that the result calculated with entropy method is consistent well with the geology data.The result of the new method has been applied to the stability analysis of the left bank slope at Long-tan hydropower dam site.In a word,it is a new analysistechnique with promotional value.
Entropy originated from thermodynamics is an effective method of multi-objective decision and a measurement of system uncertainty.It is still not applied widely in geology especially in analysing the slope stability.So a new method for evaluating the slope stability is presented in this paper.It is based on the interaction matrix and information entropy.The new method combines the sensitivity of interaction matrix to each influencing factor on slope stability and the quantization of information entropy to the irregularity of slope.It can provide the objective result of slope stability using factors in geology,environmental and engineering.It has been shown that the result calculated with entropy method is consistent well with the geology data.The result of the new method has been applied to the stability analysis of the left bank slope at Long-tan hydropower dam site.In a word,it is a new analysistechnique with promotional value.
引文
[1]伍法权.中国21世纪若干重大工程地质与环境问题[J].工程地质学报,2001,(2):115~120.Wu Faquan.Major Engineering Geological and environmentalproblems in China in 21stcentury.Journal of Engineering Geology,2001,(2):115~120.
[2]矫东风,吕新彪.信息熵在甘南西部金矿预测中的应用研究[J].地质与勘探,2004,(3):69~73.Jiao Dongfeng,Lv Xinbiao.Application of information entropy forgold prognosticating in the west of Southern Gansu.Geology andProspecting,2004,(3):69~73.
[3]张昭栋,张华,魏焕.苍山Ms5.2地震前兆异常综合加权信息熵的变化[J].内陆地震,1998,(3):200~205.Zhang Zhaodong,Zhang Hua,Wei Huan.Variation of comprehen-sive weighted information entropy of seismic precursors before theCangshanMs5.2 earthquake.Inland Earthquake,1998,(3):200~205.
[4]黄孝刚,张家军,甘华阳.滑坡危险性评价预测的新思路[J].中国地质灾害与防治学报,2002,(3):23~28.Huang Xiaogang,Zhang Jiajun,Gan Huayang.A newidea on land-slide hazard assessment and prediction.The Chinese Journal of Ge-ological Hazard and Control,2002,(3):23~28.
[5]丁继新.滑坡和泥石流致宰条件叠合技术及风险分析——以川藏公路然乌至鲁朗段为例[M].中国科学院研究生院博士学位论文,46~56.Ding Jixin.Hazard-inducing Conditions Overlapping Techniqueand Risk Analysis of Landslides and Debris Flows:Case Study inRanwu to Lulang Section of Sichuan-Tibet Highway.Ph.D Thesisof the Graduated University,CAS,45~46.
[6]张晓辉,王辉,戴福初,等.基于关系矩阵和模糊集合的斜坡稳定性综合评价[J].岩质力学与工程学报,2000,(3):346~351.Zhang Xiaohui,Wang Hui,Dai Fuchu,et al.Comprehensive evalu-ation of slope stability using interaction matrix and fuzzy sets.Chi-neses Journal of Rock Mechanics and Engineering,2000,(3):346~351.
[7]曹晓东,张朝芳.对关系矩阵的一种新定义[J].电脑开发与应用,1999,12(3):7~9.Cao Xiaodong,Zhang Chaofang.A newdefinition of relational ma-trix.Computer Development&Applications,1999,12(3):7~9.
[2]矫东风,吕新彪.信息熵在甘南西部金矿预测中的应用研究[J].地质与勘探,2004,(3):69~73.Jiao Dongfeng,Lv Xinbiao.Application of information entropy forgold prognosticating in the west of Southern Gansu.Geology andProspecting,2004,(3):69~73.
[3]张昭栋,张华,魏焕.苍山Ms5.2地震前兆异常综合加权信息熵的变化[J].内陆地震,1998,(3):200~205.Zhang Zhaodong,Zhang Hua,Wei Huan.Variation of comprehen-sive weighted information entropy of seismic precursors before theCangshanMs5.2 earthquake.Inland Earthquake,1998,(3):200~205.
[4]黄孝刚,张家军,甘华阳.滑坡危险性评价预测的新思路[J].中国地质灾害与防治学报,2002,(3):23~28.Huang Xiaogang,Zhang Jiajun,Gan Huayang.A newidea on land-slide hazard assessment and prediction.The Chinese Journal of Ge-ological Hazard and Control,2002,(3):23~28.
[5]丁继新.滑坡和泥石流致宰条件叠合技术及风险分析——以川藏公路然乌至鲁朗段为例[M].中国科学院研究生院博士学位论文,46~56.Ding Jixin.Hazard-inducing Conditions Overlapping Techniqueand Risk Analysis of Landslides and Debris Flows:Case Study inRanwu to Lulang Section of Sichuan-Tibet Highway.Ph.D Thesisof the Graduated University,CAS,45~46.
[6]张晓辉,王辉,戴福初,等.基于关系矩阵和模糊集合的斜坡稳定性综合评价[J].岩质力学与工程学报,2000,(3):346~351.Zhang Xiaohui,Wang Hui,Dai Fuchu,et al.Comprehensive evalu-ation of slope stability using interaction matrix and fuzzy sets.Chi-neses Journal of Rock Mechanics and Engineering,2000,(3):346~351.
[7]曹晓东,张朝芳.对关系矩阵的一种新定义[J].电脑开发与应用,1999,12(3):7~9.Cao Xiaodong,Zhang Chaofang.A newdefinition of relational ma-trix.Computer Development&Applications,1999,12(3):7~9.
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