Research On Application Of Compositive Seepage Prevention Technology Used In Reinforcing Huashan Reservoir

People treat sick and dangerous earth rock dam by technology of compositive seepage prevention, which is used varietly according to different parts,reasons,characters of engineering geology and so on, that make it much more scientific, economic and reasonable. Comparing technology of compositive seepage prevention with the single one, the former has many merits, such as being easier to be master, being more quickly in construction and the engineering cheaper etc.. The technology has enormous development potentiality, it is the developing direction and the general trend, it will bring more broad application prospective to reinforce and seepping earth-rock dam of dangerous reservoir.This paper takes the reinforcement project of Huashan reservoir in Yongfu County of Guangxi Province as example, after reading massive domestic and foreign documents about seepage prevention, with understanding domestic and foreign technology of earth-rock dam seepage prevention from many aspects and ways, it study on seepage prevention and reinforceing on Huashan reservoir's dam, and mainly on the reasons cause of seepage to dam's foundation and body, applies knowledge of soil mechanics,materials mechanics,hydraulics and so on, uses Darcy's law and finite element method, and simulates dam's seepage path according to three different working conditions such as: normal water level, designed flood level and examinationed flood level, then analyses seepage stability of dam's foundation and body for current situation and the reinforcement plan, analyses and researches stability of dam's slope when the reservoir be in three different working conditions above-mentioned. According to analytic and calculated result, at the same time, considers compositive factors about construction condition engineering cost etc., then puts forward the seegape prevention and reinforcement plan that it is suitable Huashan reservoir's dam, the reinforcement plan is heavy curtain grouting to dam's foundation, builds the concrete heart wall of against seepage to dam's body and laies compound geomenbrane to dam's slope, it will provide much valuable reference to further settle seepage problem of Huashan reservoir's dam and provide valuable practical method for other similar projects. This will have the practical significance on enhancing the reservoir reinforcement level and developing the water construction in our Guangxi Province.