工程场地构造稳定性分析及研究
ANALYSIS AND STUDY OF STRUCTURE STABILITY IN ENGINEERING SITE
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摘要: 本文利用浅层人工地震勘探技术,采用水平多次迭加的工作方法,对黄河大学校园改建规划工程场地的构造稳定性进行评价。通过利用计算机和相应的资料处理软件,对原始资料进行预处理,速度分析,动、静校正,滤波和迭加,振幅均衡,偏移转换等处理,得到了场地300m以上的地层结构及构造形态。对结果分析表明:该场地第四纪以来一直处于一定范围内相对稳定的沉积环境之中,但在沉积过程中伴随有局部运动和不均匀沉积现象;场地300m以上的沉积层在沉积过程中经历了约20次幅度、频度不等的升降运动,各反射界面基本上整套连续,横向上比较稳定,但也存在着局部起伏和错动。最后通过对资料的分析研究,为该场地未来建筑物的布局提出了指导性意见。Abstract: In this paper, a staructure stability evaluation for the engineering reconstruction site in Yellow River cumpus has been proposed.The data were acquired by means of shalllow artificial seismic prospecting multiple coverage technique.Through computer and corresponding software,we have obtained the stratigraphic structrue and the tectonic patterns in the site by preprocessing, velocity analysis, dynamic and static correction, filtering and stack, amplitude isostasy, migration transfer method.The analysis results of the data indicate that the site has been located in a local relatively stable sedimentary environment since Quaternary, but some local movenent and inhomogeneus sedimentary phenomenon occured in the course of the depositinal procedure.The layers over 300m in the site have undergone vertical movements which have different amplitudes and frequencies for about 20 times.All the reflected interfaces are basically continuous and stable along the horizontal direction but there are some local fluctuation and disturbance.Finally, we proposed an instruction for the distribution of the biiuldings which will be constructed in this site.