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2016 ; 26
(1
): 123-130
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Volumetric measurement of rock movement using photogrammetry
#MMPMID27110429
Benton DJ
; Iverson SR
; Martin LA
; Johnson JC
; Raffaldi MJ
Int J Min Sci Technol
2016[Jan]; 26
(1
): 123-130
PMID27110429
show ga
NIOSH ground control safety research program at Spokane, Washington, is exploring
applications of photogrammetry to rock mass and support monitoring. This paper
describes two ways photogrammetric techniques are being used. First,
photogrammetric data of laboratory testing is being used to correlate energy
input and support deformation. This information can be used to infer remaining
support toughness after ground deformation events. This technique is also
demonstrated in a field application. Second, field photogrammetric data is
compared to crackmeter data from a deep underground mine. Accuracies were found
to average 8 mm, but have produced results within 0.2 mm of true displacement, as
measured by crackmeters. Application of these techniques consists of monitoring
overall fault activity by monitoring multiple points around the crackmeter. A
case study is provided in which a crackmeter is clearly shown to have provided
insufficient information regarding overall fault ground deformation.
Photogrammetry is proving to be a useful ground monitoring tool due to its
unobtrusiveness and ease of use.