Study On Seepage And Anti-seepage Structure Design Of Sluice On Deep Gravel Cover

In the 20 years, the matter of gate dam construction on deep and thick overburden ofter appears, especially in the southwest regions with rich hydro-energy resources . Deep and thick overburden, with the characteristics of complex genetic, loose constitution, wider inhomogeneous physics mechanics property, puts forward higher requirement for gate dam construction and safety operation. Seepage stabilization and settlement are the incipient defaults to gate dam construction and operation. So they must be studied seriously.ANSYS temperature pattern is applied to 2D seepage numerical simulation calculating based on seepage pattern similar to temperature pattern and program of modified drag coefficient method is generated. By comparing the calculating results of them ANSYS soft is verified feasible in seepage pattern calculation and a new way is provided to seepage numerical calculation.On the basis of sufficient study of predecessors achievements, study the seepage, anti-seepage system, settlement of sluice on deep and thick overburden as JinPing II hydropower station. 3D seepage numerical simulation of the station and the effect of the anti-seepage system of sluice on deep and thick overburden is system studied. The sensitivity analysis of the anti-seepage system is analyzed to optimize the structure design of it. The Whole and part structure study of the sluice including the settlement of the sluice and the cut—off wall is studied by adopting surface-to-surface contact analysis in ANSYS to assure it run safely.The results can improve the quality of construction and the precision of the design of gate dam on deep and thick overburden. It also has the important significance to engineering practices of the safety of sluice and optional design. At the same time, it is also of value to the other water resources and hydroelectric projects in the western China.