介绍了三峡二期围堰防渗墙风化砂柔性材料施工配 方中水泥、风化砂和水的检测原理、检测步骤和检测结果。通过以上检测，有效控制了三峡二期围堰防渗墙的施工质量。

The paper introduces the detection principles ,metho ds and results of cement,weathered sand and water in determination on job formul ation used in the concrete cutoff wall of TGP's secondphase cofferdam.By det ecting insitu the construction quality of phaseⅡ cofferdam concrete cutoff wall was effectively controlled.