Journal
INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT
Volume 31, Issue 8, Pages 544-557Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17480930.2016.1215782
Keywords
Foam-cemented paste backfill; uniaxial compressive strength; ultrasonic wave velocity; dynamic events; damping
Funding
- National Science Foundation of China [51204031, 51274055]
- General Project of Science and Technology Project of the Education Department of Liaoning Province [L2014100]
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A foam-cemented paste backfill (FCPB) is proposed with the use of ultrasonic pulse velocity (UPV) measurements as a monitoring method in place of uniaxial compressive strength (UCS). The dynamic wave damping effect of vesicles created with bubbles from vesicants reduces the adverse effects of blasting and seismicity on backfill stability. UCS and UPV of FCPB are determined at various factor combinations. The results show that regardless of the changes of V/B, b/t and SC, the UCS and UPV of FCPB increased linearly with curing time and, therefore, UPV can be used to quickly evaluate the quality of FCPB.
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