FIELD: construction.
SUBSTANCE: method involves preparation of the base by dumping of the draining soil with a slope from the center to the periphery to the value equal to half of forecasted difference of the base setting. Then, the surface of the storage bottom is graded by ledges storage and a waterproof geomembrane, consisting of tightly connected panels, is laid. Then, in the storage the liquid (water or mud) is held until reaching the desired degree of consolidation of the foundation. After pumping it checks integrity of the geomembrane by successive execution of several operations: scanning of the base from geomembrane surface through physical measurements, supply into the storage of the indicator fluid, its holding, followed by draining and re-scanning of the base. After the test the geomembrane defects are eliminated and the protective layer is laid.
EFFECT: method allows to ensure screen tightness due to pre-consolidation of the base and control of its integrity, thereby improving the operational reliability of the storage.
3 cl, 8 dwg
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