A study of new technology of grouting and groundwater drainage

This paper presents overall studies on grouting and groundwater drainage of the Xiaolangdi Multipurpose Dam Project, and identities problems in Standards and Specifications both in China and abroad. The achievements of the study include relative permeability and relative groutability, selection of parameters of grouting and groundwater drainage, orientation of grouting and groundwater drainage holes, stable grouting liquid dozing. Furthermore, new technology of grouting and groundwater drainage is provided. The advantage of the new technology is demonstrated by the practices in the Xiaolangdi Project.