Hydraulic and earth engineering – Earth treatment or control – Rock or earth bolt or anchor
Patent
1979-09-14
1981-09-15
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Rock or earth bolt or anchor
411 55, 411 60, E21D 2100, E21D 2000
Patent
active
042894263
ABSTRACT:
The stabilizer invention comprises an improved, generally tubular friction rock stabilizer body for insertion into a borehole formed in a structure such as mine roof or side wall, or other subterranean opening for stabilizing the structure, the body having a maximum transverse dimension greater than borehole in which it is to be inserted, and requiring therefore considerable force to effect its borehole insertion, the stabilizer having a facility for attaching a pendant thereto. An end of the body has a threaded nut fixed therein which receives a threaded, elongate, suspension bolt as the pendant. Thus, the pendant bolt, having a terminal drive head, can engage and pendantly support an ancillary article, such as a roof plate, remotely from the stabilizer body. The stabilizing invention comprises stabilizing an earth structure through a given depth thereof with a shorter length friction stabilizer by substantially "bottoming" the stabilizer in a borehole in the earth structure of the given depth, attaching one end of an elongate extension piece to the "bottomed" stabilizer, and mounting an earth structure retention plate, on the opposite end of the extension piece, securely against the earth structure. Finally, the stabilizer-forming invention comprises fixing a pendant-receiving fastener to an end of a standard earth or rock friction stabilizer for pendantly attaching a roof plate, or the like, thereto.
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patent: 2406536 (1946-08-01), Gelpcke
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patent: 4056036 (1977-11-01), Kamann et al.
patent: 4126004 (1978-11-01), Lineboom
Ingersoll-Rand Company
Murphy Bernard J.
Taylor Dennis L.
Tibbott David W.
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