风化料代替粘土料在桂家湖大坝加高工程中的应用研究

AN APPLICATION OF WEATHERING MATERIAL IN STEAD OF CLAY MATERIAL IN THE WORK OF DAM ELEVATION AT GUIJIA LAKE

镇宁县桂家湖水库大坝加高工程，主坝的两坝肩及４＃副坝，设计为均质土坝，因选定料场中的土料含水量较高，贵州阴雨天较多，土料翻晒困难，难于满足填筑的质量和进度要求，为解决这一问题，经技术论证采用风化料代替粘土料进行大坝填筑施工，取得良好的效果。

In the work of dam elevation of GuiJia lake at Zhenning county, two abutments of main dam and No.4 auxiliary dam should be bomogeneous earth dam in terms of the scheme. However, clay material in selected site can not meet the requirement in both quality and time schedule due to the reason that clay material with higher water content is difficult to turn it over for basking during much more rainy days in Guizhou. In order to solve this issue, it is suggested through technical demonstration that weathering material be used to substitute clay material in the construction of dam placement. It is apparent that effect is satisfactory.