Analysis Of Zhong Lv Reservoir Dam Reinforcement

Zhong Lv reservoir is located in Jiangxi Jiangwan province Zhong Lv Cun,Wuyuan County town，The upper reaches of a tributary of Le An River Creek water。The reservoir was built in1997October，In19995menstrual approval to start trialoperation，Is a comprehensive utilization of irrigation, flood control, power generation,water supply, aquaculture and tourism and other medium-sized hydropower project。The catchment area of33km2。Main, auxiliary dam are compound geomembranefacing rolled rockfill dam，The main dam has a maximum height of51m, For theauxiliary dam on the right bank of the main dam trimmed, The maximum dam heightof5m. The dam is listed as the Ministry of water resources science and technologypopularization test of dam type, Hohai University as a cooperative unit of this project.After completion of the project, There are some problems that the dam: One is themain, auxiliary dam of composite geomembrane panel has breakage, welding, weld,anti-seepage effect is poor, The dam leakage is too large, Existence of dam leakage.Toe board section size is too small, There are two basic dam foundation and abutmentleakage; Two is the auxiliary dam (the original body) in the long-term operation of thehigh water level slope stability, the existence of security risks.According to the problems of leakage in Zhonglu reservoir dam, This paperanalyzes the reasons and the safety of the dam leakage, Research on the rationalreinforcement measures, The leakage of the successful experience in the concrete facerockfill dam. The main contents are as follows:1、The geological exploration and the original data, Present the quality of the damare analyzed, Scheme selection good basic data for engineering reinforcement;2、By using the existing flow reorganization and analysis of prototype observationdata, Combined with the previous repair of anti-seepage reinforcement constructionand improvement of dam seepage analysis, To find the cause of seepage in dam;3、Through the analysis of dam deformation observation data and finite elementanalysis, The current structure of dam safety analysis;4、We studied the reinforcement scheme and comparison, Recommend the use ofthe major dam of reinforced concrete panel, Dam foundation consolidation grouting and curtain grouting treatment scheme; Auxiliary dam with concrete core wall inthe dam, Seepage control of dam foundation curtain grouting treatment;5、The dam reinforcement scheme selected the desired hydrological, geological,permeability and structural stability analysis, a comprehensive analysis, whichprovides the scientific basis for the rationality and the ultimate implementation of theprogramme.Project implementation, achieves the anticipated goal reinforcement, completelyeliminates the safety hidden dangers of the dam, solved the fundamental problem inthe past ten years of the reservoir, and colleagues from the success of waterconservancy and encourage each other.