Method And An Apparatus For Attenuating Pressure Pulses

摘要

An apparatus and a method for attenuating water pressure pulses generated during sea piling when a percussion mechanism is used, including the stage of driving at least one pile into an earth by a percussion mechanism, while along at least a part of its axial extension, the pile is surrounded by water and at least partly by a tubular outer sleeve; and at least one gas-filled space is provided between the inner periphery of the outer sleeve and the outer periphery of the pile. The apparatus includes mechanisms for providing the gas-filled space.

主权项

1. A method for attenuating water pressure pulses generated during sea piling when a percussion mechanism is used, the sea piling comprising the stage of driving at least one pile into an earth formation at the bottom of a sea or lake, the pile defining a longitudinal axis and having an outer periphery, by means of the percussion mechanism, while along at least a part of the axial extension of the pile the pile is surrounded by sea or lake water, characterized in that the method comprises the steps of
surrounding the pile, along at least a section of said part of the axial extension of the pile, with a tubular outer sleeve having an inner periphery, the outer sleeve extending in the axial direction of the pile; and providing, at least partially along said section of said part of the axial extension of the pile, one gas-filled space or a plurality of gas-filled spaces between the inner periphery of the outer sleeve and the outer periphery of the pile.