3/31/2023 0 Comments Disk drill review reddit![]() ![]() Transporting the cuttings to the surface. A Zephyr claw vacuum pump (C-VLR 60 60 m 3 h −1) provides enough flow for At the entrance to the drill housing, behind the bit, a coffee-mill-like rotary cutterĮnsures that only small ice cuttings can enter the vacuum line. The ice cuttings to pass from the drill bit to the vacuum pipe. A 2 mm clearance between motors and the steel housing allows for ![]() The electrical power line is taped to the outside of the vacuum pipe. TwoĤ0 W motors (26 mm diameter) and a planetary gear driving the 40 mm drill bit are housed in a stainless-steel pipe ofģ2 mm outer diameter connected to a 22 mm/19 mm (outer/inner diameter, henceforth), 120 m long vacuum pipe (polyamide The remaining hole is then drilled with a dedicated electromechanical drill (Fig. 3). While melting, it also glazes the hole wall, thus making it mechanically more stableĪnd reducing the risk of snow falling into the hole. Gravity, keeping the melting direction very close to vertical. During melting, the bead hangs in the firn, allowing the melter to pivot to the vertical position by The upper part of the bob has a spherical bead. Greatest depth reached so far was 324 m during the last field project at Little Dome C.įigure 2Heated copper “plumb bob” for melting and glazing the first 6 m of the firn hole. It is designed to ultimately drill through a 3000 m ice sheet within roughly 1 week. Six field projects in Greenland and Antarctica. The equipment has been tested and improved during Hole, the temperature profile and the dust content in the surrounding ice (optical dust logger). After drilling, a dedicated logger with a 15 mm diameter is deployed into the hole for measuring the geometric orientation of the The ice cuttings are flushed to the surface in normal circulation, i.e., between the hose and borehole wall, and can be sampled forĪnalysis. A 20 mm access hole is drilled with a hydraulic coiled tubing system where the tube consists of a The goal of RADIX is to provide rapid, deep access for sampling of ice and downhole physical measurements that inform about ice sheet ageĪnd history and the integrity of layering. RADIX (Rapid Access Drilling and Ice eXtraction) is a prospecting drilling system that has been designed, realized and tested on polar ice ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |