中文摘要：

场地剪切波速是建筑抗震设计中不可缺少的基础资料。因此，本文通过多道面波法对都江堰市区进行了剪切波速调查，为都江堰市区的建筑抗震设计及汶川地震的进一步研究提供基本数据。文中利用多道面波分析方法在都江堰市区（E：103°35′～103°41′，N：30°57′-31°02′）布置了35个面波测点进行场地剪切波速结构和覆盖层厚度的调查，测点间距约2km。获得了都江堰市区场地等效剪切波速（％。）和场地覆盖层厚度分布。结果显示，都江堰市区的等效剪切波速介于267m／s与389m／s之间；覆盖层厚度在6～20m之间。另外，本文利用欧美规范的方法计算了都江堰市区的5m至20m的平均剪切波速（TAV），通过对比各个深度的平均剪切波速发现，各个深度的平均剪切波速和％。具有较高的线性相关性。利用这一特征，本文建立了都江堰市区利用不同深度的平均剪切波速估计‰。的经验公式（V_S20=（a±△a）＋（b±△b）·V_St＋σ）。利用这一经验关系式可以在都江堰市区钻孔深度或其它测试深度达不到20m的情况下估计％。。

英文摘要：

Shear wave velocity structure of shallow site is essential to earthquake engineering research. In order to provide the basic materials of equivalent shear wave velocity and overburden of this area for some further resear- ches,a multi-channel analysis of surface wave method was applied to this area（E：103°35′ -103°41 ′ , N：30°57′- 31°02′ ）. 35 survey points were evenly distributed in the area with the point space about 2km. The equivalent shear wave velocity and overburden thickness of this area were obtained. The result shows that the equivalent shear wave velocity is ranging from 267 m/s to 389 m/s. The overburden thickness of the area is ranging from 6 m to 20 m. In addition, by comparing the time-averaged shear wave velocity （TAV） of the upper 20 meters to V_S20, we find that the TAVs of that upper 20 meters are linearly correlated to that of 20 meter （ V_S20）. Using this feature, a set of formulas for（V_S20） and V_sz（ Vs20 = （a ±△a） ＋ （b ±△b）· V_St ＋σ） is worked out in this paper, which can be used to evaluate the V_S20 when V_S20 is not available.