基于SPTn判别法判别砂土液化特征  

Identification of the Characteristics of Sand Liquefaction Based on SPTn Discriminant Analysis

作　　者：于明明 贾志献[2] 林迎洁 樊九九 王博 

机构地区：[1]西北综合勘测设计研究院,陕西西安710003 [2]中国电建西北勘测设计研究院有限公司,陕西西安710003 [3]江苏省有色金属华东地质勘查局,江苏南京210007

出　　处：《安全与环境工程》2015年第4期164-167,共4页Safety and Environmental Engineering

摘　　要：砂土液化是工程不良地质现象的主要问题之一,正确地分析和判别砂土液化对确保人类工程建设及安全具有十分重要的意义。依据孔压静力触探试验提供的数据,结合SPTn判别法,可判别砂土液化的曲线特征,即同一液化土层,土体液化安全系数不尽相同;从孔压静力触探孔的SPTn投影图上可以明确砂土液化的三个特征,即发生液化土体的位置、发生液化土体的厚度和发生液化土体的安全系数。Sand liq rect analysis and uefaction is one of the main problems of bad engineering geological phenomenon, so cor discrimination of sand liquefaction is of great significance to the stable development of hu man civilization. On the basis of accurate data provide by pore pressure static cone penetration test, togeth- er with SPTn discriminant analysis,this paper clears the characteristics of sand liquefaction：the liquefaction safety factor of the same liquefaction soil layer is not the same. Based on the SPTn discrimination method the paper clearly obtains three characteristics of sand liquefaction： the occurrence location of liquefaction soil, the occurrence thickness of liquefaction soil, and the safety factor of liquefaction soil.

关 键 词：砂土液化 SPTn判别法 Seed简化判别法 孔压静力触探 液化特征 

分 类 号：X93[环境科学与工程—安全科学] P642.1[天文地球—工程地质学]