甘南地区黄土残余应变特征研究和震陷灾害区划

英文篇名：Residual strain characteristics of loess and zoning of seismic subsidence in gannan region of Gansu Province
中文刊名：岩土工程学报
英文刊名：Chinese Journal of Geotechnical Engineering
作者：吴志坚 ; 张泽忠 ; 王平 ; 曾立峰
英文作者：WU Zhi-jian ; ZHANG Ze-zhong ; WANG Ping ; ZENG Li-feng(1.Key Laboratory of Loess Earthquake Engineering ; Gansu Earthquake Administration ; CEA ; Lanzhou 730000 ; China ; 2.Lanzhou Institute of Seismology ; CEA ; Lanzhou 730000 ; China ; 3.Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu Province ; Lanzhou 730000 ; China ; 4.Department of Engineering Mechanics ; Dalian University of technology ; Dalian 116024 ; China)
中文关键词：残余应变 ; 震陷 ; 小区划
英文关键词：residual strain ; seismic subsidence ; microzoning
出版日期：2013-07-15
机构：甘肃省地震局(中国地震局黄土地震工程重点实验室);中国地震局兰州地震研究所;甘肃省岩土防灾工程技术研究中心;大连理工大学工程力学系;
年：2013
期：S1
出版单位：岩土工程学报

摘要

震陷属于典型黄土地震灾害。通过对甘肃省甘南州合作市所取的黄土原状样进行动三轴试验,并对比分析其他典型黄土地区试验结果,获得了甘南地区黄土残余应变特征。结合当地钻孔勘查和高密度的地脉动测试,得到了该区黄土覆盖层厚度。基于震陷试验和覆盖层分布结果,利用地理信息系统软件的插值和空间分析功能对合作市进行了两种超越概率下的四级震陷灾害区划。
Seismic subsidence is one of the typical loess seismic disasters.Based on the results of dynamic triaxial tests on original loess samples of Hezuo City,Gansu Province,the residual strain characteristics are obtained by comparing with the test results of loess in other typical loess areas.In addition,the layer thickness distribution of the loess in Hezuo City is plotted through high intensity microtremor survey based on drilling exploration results.Moreover,using interpolation and spatial analysis functions of geographic information system(GIS) software,the zoning of seismic subsidence hazards of level 4 with two kinds of probabilities of exceedance is carried out on the basis of test results and thickness distribution of the loess.

引文

[1]王兰民,石玉成,刘旭,等.黄土动力学[M].北京:地震出版社,2003.(WANG Lan-min,SHI Yu-cheng,LIU Xu,etal.Loess dynamics[M].Beijing:Earthquake Press,2003.(inChinese))
    [2]袁中夏.黄土动残余变形的特性与机理研究[D].北京:中国地震局工程力学研究所,2010.(YUAN Zhong-xia.Characteristics and mechanism of dynamic residualdeformation of loess[D].Beijing:Institute of EngineeringMechanics,CEA.2010.(in Chinese))
    [3]骆亚生,谢定义,董为民,等.不同地区黄土振陷变形特性的对比分析[J].陕西水利发电,2001,17(1):4-7.(LUOYa-sheng,XIE Ding-yi,DONG Wei-min,et al.Comparativeanalysis of vibration deformation behavior of the loess fromdifferent regions[J].Journal of Shaanxi Water Power,2001,17(1):4-7.(in Chinese))
    [4]李兰,王兰民.含黏粒量黄土抗震陷性能的试验研究[J].水文地质工程地质,2007,34(3):63-66.(LI Lan,WANGLan-min.Experimental study of the subsidencecharacteristics of clayey loess[J].Hydrogeology andEngineering Geology,2007,34(3):63-66.(in Chinese))
    [5]徐舜华,王兰民,孙军杰,等.含水率对黄土震陷性定量影响研究[J].西北地震学报,2010,32(1):30-35.(XUShun-hua,WANG Lan-min,SUN Jun-jie,et al.Study on theinfluence of water content to subsidence characters of loess[J].North Western seismological Journal,2010,32(1):30-35.(in Chinese))
    [6]石玉成,李兰.黄土震陷变形特征的细观分析[J].岩石力学与工程学报,2003,22(增刊2):2829-2833.(SHIYu-cheng,LI Lan.Microanalysis of seismic subsidencecharacteristics of loess[J].Chinese Journal of RockMechanics and Engineering,2003,22(S2):2829-2833.(inChinese))
    [7]邓津,王兰民,张振中.黄土显微结构特征与震陷性[J].岩土工程学报,2007,29(4):542-548.(DENG Jin,WANGLan-min,ZHANG Zhen-zhong.Microstructure characteristicsand seismic subsidence of loess[J].Chinese Journal ofGeotechnical Engineering,2007,29(4):542-548.(inChinese))