| 摘要 |
Core drilling tool for drilling rock in underground soil formations with an outside pipe that can be connected by means of connecting devices at its upper end to the lower end of a drill column that can be set rotation by means of a drive and can be connected at its lower end to a core drilling crown, and with an inside pipe that forms a separate component that can be conveyed to the surface and a supporting part which is supported in the outside pipe and is corotational with the latter as well as a core pipe part suspended on the carrying part by means of a bearing so it cannot twist relative to the outside pipe and can receive a core cut by the drilling process, wherein the core pipe part comprises a measurement unit located in its upper area for on-site acquisition, processing and storage of data that form parameters for the borehole, the drilling core and/or drilling process. |
