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Mechanical roof pulling technique for evaluating the effectiveness of roof bolting systems.

Authors
Wang-C
Source
Proc AIME Ann Meeting, Dallas, Texas, Feb 23-28, 1974 SME Preprint 74-Am-71, 1974 Feb; :1-21
Link
NIOSHTIC No.
10010858
Abstract
The federal Bureau of Mines has been developing the mechanical roof pulling technique as a method for evaluating the effectiveness and the comparative advantages and disadvantages of various roof bolting systems, based on the characteristic responses of bolted mine roofs to a prescribed external loading system. Preliminary experiments were conducted in the Bureau's safety research coal mine using a 12- foot- and a 16-foot-span test rig. The experiments have proved the capability of the test rigs and suggested the viability of the test method. This paper summarizes the test concept and the experimental results.
Keywords
Mining; Mining industry; Roofing; Roof bolters; Roof support systems; Equipment reliability; Equipment testing; Laboratory testing; Mechanical properties; Effectiveness research
Publication Date
19740201
Document Type
OP
Fiscal Year
1974
NTIS Accession No.
NTIS Price
Identifying No.
OP 66-74
NIOSH Division
PRC
Source Name
Proc. AIME Ann. Meeting, Dallas, Texas, Feb. 23-28, 1974, Sme Preprint No. 74-Am-71
State
PA; TX
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