overbreak meaning: definition, etymology and quotations

overbreak

verb

Etymology From Middle English *overbreken, from Old English oferbrecan (“to transgress, violate”), equivalent to over- + break.

To cave in near the edge of an excavation.

This proved wise as the south and west walls of the winder chamber overbroke badly and blocky ground was encountered in the area set aside for the electrical equipment.1958, Australasian Institute of Mining and Metallurgy, Proceedings - Australasian Institute of Mining and Metallurgy: Issues 183-188:

UK, Dialectal To get over; recover from.

He was never able to overbreak his rheumatism.

overbreak

noun

Etymology From Middle English *overbreken, from Old English oferbrecan (“to transgress, violate”), equivalent to over- + break.

Civil engineering, Engineering, Geography, Geology, Natural sciences, Physical sciences Rock or earth excavated beyond the planned extent; caving in of material near the edge of an excavation.

The overbreak depends on several factors. Foremost among them are the following: Spacing between the joints. Shattering effect of blasting on the rock located beyond the payline.1946, Karl Terzaghi, Rock Defects and Loads on Tunnel Supports, page 49:
The presence of faults and joint structures in stope walls within the ore body has resulted in overbreak of ore into adjacent stopes.2001, W.A. Hustrulid, Richard Bullock, Underground Mining Methods: Engineering Fundamentals and International Case Studies, page 248:

Related terms: underbreak