汾河新二坝坝基存在地质问题及处理方法

Existing Geologic Problems in the Dam Foundation and Treatment Methods for the New Fenhe Second Barrage

汾河新二坝坝基上部主要为粉土质砂及含细粒土砂,工程地质条件差,主要存在坝基不均匀变形、渗漏、渗透变形及地震液化等工程地质问题。文中对坝基存在的各种地质问题进行了评价,并提出了合理的工程处理措施,从而确保工程竣工后闸坝处于稳定状态。

The upper strata of the dam foundation of the New Fenhe Second Barrage Project are silt and sand with fine earth mainly. The engineeringg geology conditions are relatively poor. Their main existing problems on geological aspects are uneven deformation in dam foundation,seepage,seepage deformation and earthquake liquefaction,etc. In the paper,the assessment on the assorted geological problems existing in dam foundation is conducted,and the reasonable engineering treatment measures are put forward,so as to ensure the stability state of the project after it has been finished.