haulbackとは 意味・読み方・使い方

名詞

haulback (countable and uncountable, plural haulbacks)

1. (timber industry, countable) A small wire rope or line used to pull the main cable (or butt-rigging) back into position after a log has been hauled out.
   • 1910 June 11, American Lumberman, page 45:

     We ran 3,000 feet of haulback and got only thirty-five logs.

   • 1978 April, Logging Systems Guide, U.S. Department of Agriculture, Forest Service, Alaska Region, Division of Timber Management, pages 48.42b--2:

     The skyline isn't interlocked with the mainline and haulback, and the mainline and haulback can't both wind the same direction at the same time.

   • 2022 February 14, John Gill, The Wannabe Doctor: A Man's Quest Amid Psychiatry’s Identity Crisis, Page Publishing, Incorporated, page 17:

     Butt rigging—a series of heavy steel links, swivels, and shackles—commected the main line to the haulback line and carried up to six chokers.

2. (mining, uncountable) A method of surface mining where overburden (the material on top of the coal or ore) is transported from an area and then hauled back after removal of ore or coal.
   • 1973, William B. Schmidt, Mining – Coal and Oil Shale, Bureau of Mines, U.S. Atomic Energy Commission, page 8:

     This includes mining systems R&D such as development of haulback techniques to redeposit overburden material in a beneficial sequence immediately behind the extraction operation to minimize costs and aesthetic and environmental damage.

   • 2013 September 17, Mohan K. Wali, editor, Ecology and Coal Resource Development, volume One, Pergamon Press, page 365:

     As a result, haulback systems are being designed in shich the strip mine is continuously filled in behind as the mine advances.