Underwater drilling arrangement and method for making a bore in a bed of a water body

摘要

The invention relates to an underwater drilling arrangement and a method for making a bore in a bed of a lake, sea or river, having a service platform which can be lowered for positioning on the lake, sea or river bed, a guide tube which is mounted so that it can be rotated, axially moved as well as fixed on the service platform, a drill rod with drill head which is arranged in the guide tube and can be driven via a drill drive, and a guide tube drive which is arranged on the service platform for incorporation of the guide tube in the lake, sea or river bed. In order to reduce the friction which arises upon incorporation of the guide tube between the outer shell surface of the guide tube and the earth material of the lake, sea or river bed, the guide tube has a sliding support means.

主权项

1. Underwater drilling arrangement for creating a bore in a bed of a water body, having
a service platform which can be lowered for positioning on the bed of the water body, a guide tube which is mounted so that it can be rotated and axially moved as well as fixed on the service platform, a drilling tool including a drill rod with drill head arranged at the lower end of the drill rod, said drilling tool is arranged in the guide tube and said drill rod can be driven via a drill drive and a guide tube drive which is arranged on the service platform, said guide tube drive is adapted to rotationally drive the guide tube for driving the guide tube into the bed of the water body, wherein the guide tube comprises a sliding supporter for reducing the friction arising during driving the guide tube into the bed of the water body between an outer shell surface of the guide tube and the earth material of the bed of the water body.