Abstract: Chemical stopper across the joint was adopted in treatment of dam transverse joint leaking. This treatment method was economic and worthy for popularization. The paper was concerning on the construction method and characteristics of chemical grouting for transverse joint leaking at dam section 9~10 of Dachaoshan hydropower station. As well, the application of LW water-soluble polyurethane grouting material was introduced.

摘要： 大坝横缝渗漏处理采用骑缝化学阻渗塞法经济有效，值得推广。主要介绍大朝山水电站9~10号坝段横缝漏水化学灌浆处理的施工工艺及特点，以及LW水溶性聚氨酯灌浆材料的应用。