白鹤滩拱坝横缝接缝灌浆施工工艺

Transverse joint grouting technology in construction of arch dam for Baihetan Hydropower Station

接缝灌浆属隐蔽性工程,尤其是拱坝横缝灌浆意义重大、要求更高.白鹤滩拱坝单个灌浆区的实际面积超过现有规范规定的面积,属于特大灌浆区,施工历时长、难度大.针对白鹤滩工程的实际情况研究提出了拱坝横缝接缝灌浆施工工艺.经实践验证,接缝灌浆质量满足设计及规范要求.

Joint grouting belongs to underground construction.When it is adopted by an arch dam,the joint grouting needs to satisfy higher technical requirements.The actual area of single grouting falls into the category of super-large grouting area,since it exceeds the stipulated size of current standards.Referring to difficulties has to be dealt with by Baihetan Project such as long construction period,transverse joint grouting technology was developed for practical application,so as to satisfy the requirements of design and specification of joint grouting.