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Title: Digging frozen ground with a ripper bucket
Authors: Sellmann, P. V. (Paul V.)
Brockett, Bruce E.
Keywords: Backhoe ripper
Cold regions
Excavating frozen ground
Frozen ground
Frozen soils
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 92-15.
Description: Special Report
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 yd^3/hr [2.3 to 23 m^3/hr]) was observed, depending on material type, frost thickness, sharpness of the cutters and operator experience.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Special Report

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