Impact methods of disintegrating hard materials

Journal Article · Sun May 01 00:00:00 EDT 1988 · Sov. Min. Sci. (Engl. Transl.); (United States)

OSTI ID:6243388

Fedulov, A I; Labutin, V N

The principle of laminar impact disintegration of layers of great width was proven on frozen ground and coals. Studies were made on coal sections form the Kuzbass, seasonally frozen ground in Moscow, Novsibirsk and Ust'Kamenogorsk, and long-term frozen rock from the Zapolyar' mines. The tests were made on special full-scale test beds, developed for specific conditions of disintegration, and also with basic machines (excavators, cutting combines, autoloaders) fitted with experimental pneumatic hammers. The hammers were tested in both single and duplex chisel configurations. The specific impact energy content was used to evaluate the effectiveness of the disintegration process. The highest rate of impact disintegration was achieved with coal and seasonally frozen ground. Industrial trials with building excavators and mining excavators were successful.

• OSTI ID: 6243388
• Journal Information: Sov. Min. Sci. (Engl. Transl.); (United States), Vol. 23:4; Other Information: Translated from Fiz.-Tekh. Probl. Razrab. Polezn. Iskop.; 23: No. 4, 54-60(Jul-Aug 1987)
• Country of Publication: United States
• Language: English

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012020* - Coal
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