Accession Number : ADA254304


Title :   Digging Frozen Ground with a Ripper Bucket


Descriptive Note : Special rept.,


Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH


Personal Author(s) : Sellmann, Paul V ; Brockett, Bruce E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a254304.pdf


Report Date : Jun 1992


Pagination or Media Count : 13


Abstract : To improve the digging capability of small excavators and backhoes in hard and frozen ground, a bucket of special design was selected from among a variety of attachments. This bucket cuts and rips the frozen ground, as lip teeth and a set of staggered teeth attached to the back of the bucket move through an arc during bucket rotation. Digging observations were made using a small mini-excavator and an Army tractor (SEE) with a rear-mounted backhoe. Frozen ground was excavated at several sites under impossible conditions for a conventional bucket. A large variation in excavation rates (3 to 30 cu. yd/hr(2. 3 to 23 cu. m/hr)) was observed, depending on material type, frost thickness, sharpness of the cutters and operator experience.


Descriptors :   *FROZEN SOILS , *EXCAVATION , *EARTH HANDLING EQUIPMENT , CONSTRUCTION


Subject Categories : Soil Mechanics
      Construction Equipment, Materials & Supplies


Distribution Statement : APPROVED FOR PUBLIC RELEASE