METHOD FOR CONSOLIDATION OF GROUND BASE OF HYDROTECHNICAL STRUCTURE Russian patent published in 2017 - IPC E02B17/00 E02D3/10 E02D3/11 

FIELD: construction.

SUBSTANCE: primary application area of the invention is the consolidation acceleration of the ground base of the hydraulic structure of the gravity and pile-gravity types installed on the seabed in shallow shelf regions in difficult natural conditions, where, as a rule, the ground base is composed of cohesive soils. The method of consolidation of the ground base of the hydraulic structure installed on the seabed provides for the structure immersion by accepting ballast by the structure and setting the structure base onto the seabed. Wherein on the seabed, outside the structure setting area, the wellpoints are placed at some distance from the structure foundation along its perimeter, connected to a single hydraulic system in which underpressure is created and maintained by a vacuum pump. The structure is immersed by ballasting the platform housing, up to ensuring the calculated contact of the foundation bottom of the platform housing with the seabed while simultaneously pressing the base of the electrodes into the ground. After that, the wellpoints are connected to the negative pole of the direct current source, and the electrodes are connected to the positive pole of the direct current source, and the electric current is passed to ensure the formation of the low ground water saturation area in the interaction area of the foundation with the ground base, ensuring the consolidation of the platform ground base, after which the electric current is switched off.

EFFECT: reducing material consumption and labour intensity while creating a hydraulic structure, reducing the ballast volume for ensuring specified stability of the hydraulic structure due to reducing the pore pressure in the ground, formed during the installation of the structure on the seabed, and increasing the stability and carrying capacity of the ground base of the hydraulic structure.

2 cl, 3 dwg