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Rock-bolt Anchorage in Tertiary-gravel Material: Badger Hill, California.

Authors
Conway-JP
Source
NTIS: PB 205 505 :14 pages
Link
NIOSHTIC No.
10000946
Abstract
This investigation was undertaken to determine the feasibility of rock-bolt support in Tertiary-gravel material. Pull tests were performed on five types of rock-bolt anchors to determine their optimum anchorage capacity. Four of these anchors are commercially available; the fifth, an explosive-anchor bolt, was developed by the Bureau of Mines. To increase anchorage capacity, epoxy grout was used with several of the commercial types of bolt. Tests showed that sufficient anchorage could be obtained by employing epoxy-resin grout with the commercially available wedge bolt, or by using the explosive-anchor bolt.
Publication Date
19710101
Document Type
IH; Report of Investigations
Fiscal Year
1971
NTIS Accession No.
PB-205505
NTIS Price
A03
Identifying No.
RI 7578
NIOSH Division
SRC;
Source Name
NTIS: PB 205 505
State
CA;
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