METHOD AND EQUIPMENT TO DEVELOP MICROPILES IN SOIL, IN PARTICULAR, TO FIX ACTIVE ANCHORS Russian patent published in 2012 - IPC E02D5/34 

FIELD: construction.

SUBSTANCE: equipment to develop micropiles in soil comprises a drilling rod made of a row of elements joined to each other, and equipped with a drilling crown in its head part, which has at least one nozzle designed to send a fluid medium jet in front of the crown, and at least one nozzle designed to send a fluid medium jet in direction, which is substantially perpendicular to the axis of the drilling rod. A pulling facility designed to pull a protective tube that is not engaged with a drilling rod, as the drilling rod moves through soil, besides, the protective tube comprises different sections connected to each other, and is designed to protect the drilling rod. The specified pulling facility designed to pull a protective tube comprises a connector, which is placed onto a drilling rod with provision of the capability of the drilling rod rotation relative to the protective tube and is connected with a connection facility for this protective tube, at the same time there is also a stop facility designed to prevent displacement of the specified connector along the drilling rod as the drilling rod moves through soil.

EFFECT: lower material intensity, provides protection against corrosion, higher durability of the structure.

9 cl, 3 dwg