METHOD TO ERECT PROTECTIVE COVER ON UNDERWATER SURFACE OF WATER RESERVOIR Russian patent published in 2013 - IPC E02B3/12 

FIELD: construction.

SUBSTANCE: method consists in making and laying onto an underwater surface of a water reservoir a mat of a synthetic water-resistant non-woven water-permeable material, one end of which is tightly sewn, and by stitching of the upper bed of the mat with the lower one, longitudinal channels are formed for their further filling with a ballasting material from a dispensing hopper. In process of making the mat is corrugated and gathered with fixation. The ballasting material is made in the form of a movable concrete mix with a hydraulic binder. The dispensing hopper is installed on a deck of a floating craft with the possibility of displacement of the latter along the protected underwater surface. The dispensing hopper is connected by a pipeline with a distributing header, onto outlet nozzles of which mat channels are tightly put, and the mat with the distributing header is lowered overboard, stopping lowering at a certain distance from the water reservoir bottom. Afterwards a portion of the ballasting material is sent from the dispensing hopper along a pipeline via the distributing header and the mat channels to its protective end, providing for mat anchoring. Afterwards the floating facility is put in motion along the protected underwater surface, and simultaneously the ballasting material is being supplied into channels of the mat, straightening its gathered volume and providing for gradual displacement of the mat on the area of the protected underwater surface. After complete filling of mat channels with the ballasting material its further supply and continued motion of the floating facility initiate removal of the mat from outlet nozzles of the distributing header. A concrete beam is laid crosswise on the open end of the mat, preventing leakage of the ballasting material.

EFFECT: invention makes it possible to erect a protective cover on an underwater surface of a water reservoir, having low prime cost and high strength.

4 cl, 1 dwg