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the sport of climbing in and exploring caves



(in mining), natural or artificially induced disruption of the stability of a rock mass. In underground mining, caving takes place as the collapse of blocks and pieces of rock into mine workings, detachment of sections of the roof rock, or shifting of an entire undermined rock stratum. Natural caving over a large area (roof sagging) is caused by dynamic loading on the mine workings and by air shocks within them. The harmful consequences of caving are prevented or minimized by the installation of supports in the workings and by controlling the behavior of the wall rock. An efficient and economical method of controlling rock pressure in long stoping faces (longwalls) is complete or partial roof caving.

The parameters of roof caving—the rate of caving of the immediate roof, which is brought about by the removal or shifting of the supports, and the rate of caving of the main roof—are determined by the properties of the rock, the depth, and the engineering and technological conditions of the operations. In the case of strong roof rocks that tend to overhang, artificially induced caving by means of explosives, hydraulic working of the rock mass, and other methods must be used. In underground mining of ore deposits, the principle of caving ores and surrounding rock in certain mining systems is the basis of mineral extraction technology. The principles governing rock caving in underground mining are studied for the purpose of designing mining systems and improving methods for the design of support and regulations for the protection of excavations and above-ground structures. In open-pit mining, the banks and rims of quarries are caved. They are made stable by the choice of the proper height and slope angle of the banks and rims, and also by anchoring the slopes, taking into account the structure, physicochemical properties, and loading. Under favorable conditions, self-caving of banks is used for separating rock from the rock mass.



(mining engineering)
A mining procedure, used when the surface is expendable, in which the ore body is undercut and allowed to fall, breaking into small pieces that are recovered by passages (drifts) driven for that purpose; sublevel caving, block caving, and top slicing are examples.
(petroleum engineering)
Collapsing of the walls of a wellbore. Also known as sloughing.
References in periodicals archive ?
Alongside the Huddersfield Caving Group there has been the Huddersfield Technical College Potholing Club and the University of Huddersfield Union Caving Club.
A 2hour spelunking tour lets you explore larger chambers with still-growing helictites (twisting soda straws that look like ramen noodles); bring lights and caving clothes.
Caving offers discovery and camaraderie, but few public rewards.
I usually use the word caving to describe the adventure of going underground.
We are well aware that organized cave exploration groups respect the resource and stress responsible caving, including staying out of caves when bats are hibernating," said Department of Conservation and Natural Resources (DCNR) Secretary Michael DiBerardinis.
A South Wales Caving Club member said yesterday that military activity had been noted in a number of caves on the Brecon Beacons and in the hills around Llangatwg.
Students enrolled in PED171 receive nine hours of class instruction before participating in a caving trip.
Welcome to the woolly world of caving, a sport long romanticized by adventurous teens and scientists, too.
Additionally, the suspension will allow for an acceleration of the development of level drives preparatory to front caving activities at the 85 metre undercut level of the block.