在大型水池构筑物中采用土工膜防渗是一种经济、合理、可行的技术措施。但是与其他防渗形式的建筑物相比，土工膜防渗建筑物的抗浮稳定问题更显突出。如果对于土工膜防渗大型水池采用传统的抗浮措施，不仅设计、施工困难，而且费用昂贵。采用排水降压法，不仅可以主动控制抗浮力，也使经济效益最佳。 The use of geomembrane for seepage prevention in large pool structures is an economic, reasonable and feasible technical measure. However, the anti-floating stability problem of geomembrane impervious buildings is more prominent than other impermeable forms of buildings. If conventional anti-flooding measures are applied to large-scale impervious geomembrane tanks, it is not only difficult to design and construct, but also expensive. The use of drainage and pressure reduction method not only can actively control anti-buoyancy, but also make the best economic benefits.