| 汶川大地震液化的特点及带来的新问题 |
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| 引用本文： | 袁晓铭,曹振中.汶川大地震液化的特点及带来的新问题[J].世界地震工程,2011,27(1). |
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| 作者姓名： | 袁晓铭 曹振中 |
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| 作者单位： | 中国地震局工程力学研究所,黑龙江,哈尔滨,150080 |
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| 基金项目： | 中国地震局工程力学研究所基本科研业务费专项项目，国家科技部国际合作项目，公益性地震行业科研专项项目，国家重点基础研究发展计划，国家自然科学基金重大研究计划项目 |
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| 摘 要： | 总结汶川8.0级大地震液化及其震害科学考察结果,分析此次地震液化带来的新问题.结果表明,汶川大地震中液化及其震害现象显著,是建国以来液化涉及区域最广、液化宏观现象最为丰富的一次;本次地震液化宏观现象特点为喷水高、持时短、喷砂量小但喷砂类型十分丰富;砂砾土液化、Ⅵ度区内场地液化、深层土液化、无液化减震以及液化普遍伴随地裂缝是此次地震液化5个突出特征;砂砾土液化判别技术、液化引起地表裂缝机理和预测方法、Ⅵ度区内场地液化与深层土的液化机理和预测方法、液化加减震发生条件、场地液化现场判定与识别技术等是新的课题.为解决上述问题,应优先发展岩土地震工程观测技术及建设岩土地震工程实验场.
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| 关 键 词： | 汶川大地震 液化 特点 新问题 |
Features and new aspects of liquefaction in the Wenchuan Earthquake |
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| YUAN Xiaoming,CAO Zhenzhong.Features and new aspects of liquefaction in the Wenchuan Earthquake[J].World Information On Earthquake Engineering,2011,27(1). |
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| Authors: | YUAN Xiaoming CAO Zhenzhong |
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| Institution: | YUAN Xiaoming,CAO Zhenzhong(Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China) |
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| Abstract: | The scientific investigation on liquefaction induced by Wenchuan earthquake is outlined and presented herein,and new aspects concerning on liquefaction are analyzed and proposed.The results show:(1) the liquefaction and associated damage in the event are dramatic,involving widest areas and abundant macrophenomena;(2) the features of liquefaction are high water-jet,short duration and small quantity of ejected materials,but the categories of ejected sand are various;(3) five remarkable features are gravel liq... |
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| Keywords: | Wenchuan earthquake liquefaction feature new aspects |
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