caving ground

caving ground

[′kāv·iŋ ‚grau̇nd]
(mining engineering)
Rock formation that will not stand in the walls of an underground opening without support such as that offered by cementation, casing, or timber.
References in periodicals archive ?
The scope of work includes, but is not limited to the furnishing and installing of all pipes, valves, blow-offs, bends, couplings, mechanical restraints, fire hydrants, all fittings, and worker protection from tie hazard of caving ground.