Earth dam is mainly constructed by earth and rock around the dam. Earth dam is the most old-line kind of dam and was used abroadly.In modern history,the construction technology of earth dam was developed after the 1950's and many high earth dam were built.But for some reasons,lots of earth dam have seepage problem.So,reinforcing these earth dam is very necessary for protecting the safety of people’s life and property and developing economy and maintaining social stabilization.The kind of seepage prevention ...