PMID- 38384519
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240224
IS  - 2405-8440 (Print)
IS  - 2405-8440 (Electronic)
IS  - 2405-8440 (Linking)
VI  - 10
IP  - 4
DP  - 2024 Feb 29
TI  - Directional fracturing of rock by soundless chemical demolition agents.
PG  - e26068
LID - 10.1016/j.heliyon.2024.e26068 [doi]
LID - e26068
AB  - Rock fracturing is one of the main processes in the modern mining, mineral 
      recovery, and energy industry, which is associated with the numerous 
      environmentally harmful influences. Environmentally friendly alternative to 
      conventional fracturing methods is non-explosive technology, which based on using 
      of soundless chemical demolition agents (SCDA). In this study, method of 
      directional fracturing, which based on creating tensile stress concentrators on 
      the hole surface in the required location, was proposed. Considering the 
      influences of additional installation in the borehole of stress concentration 
      cartridge on stress field nearby the hole, a case study of the effectiveness of 
      proposed rock fracturing method was performed in this paper. A numerical 
      simulation was used to study the stress distribution around the borehole with 
      SCDA in different rock types. It was found that cartridge installation leads to 
      the occurrence of the tensile stress concentrations only near to the gap of the 
      cartridge. The value of tensile stress concentration in the proposed rock 
      fracturing method significantly depends on a cartridge gap distance. An increase 
      in the gap distance leads to a decrease in the stress concentration factor. For 
      granite, sandstone and mudstone, relationships of stress concentration factor to 
      cartridge gap distance that was divided on hole diameter were obtained. The 
      equation for calculating of the hole spacing for the directional fracturing 
      method was proposed. The results of the study are confirmed by experiments 
      in-situ on the directional fracturing of rocks in a quarry and in a coal mine.
CI  - (c) 2024 The Authors.
FAU - Sakhno, Ivan
AU  - Sakhno I
AD  - Donetsk National Technical University, 29, Sofia Kovalevska Street, Lutsk, Volyn 
      region, 43012, Ukraine.
FAU - Sakhno, Svitlana
AU  - Sakhno S
AD  - Donetsk National Technical University, 29, Sofia Kovalevska Street, Lutsk, Volyn 
      region, 43012, Ukraine.
LA  - eng
PT  - Journal Article
DEP - 20240213
PL  - England
TA  - Heliyon
JT  - Heliyon
JID - 101672560
PMC - PMC10878956
OTO - NOTNLM
OT  - Mining
OT  - Rock blasting
OT  - Rock excavation
OT  - Rock fracturing
OT  - Rock mechanics
OT  - Stress concentration cartridge
OT  - Tensile stress
COIS- The authors declare that they have no known competing financial interests or 
      personal relationships that could have appeared to influence the work reported in 
      this paper.
EDAT- 2024/02/22 06:43
MHDA- 2024/02/22 06:44
PMCR- 2024/02/13
CRDT- 2024/02/22 03:51
PHST- 2023/06/25 00:00 [received]
PHST- 2024/02/06 00:00 [revised]
PHST- 2024/02/07 00:00 [accepted]
PHST- 2024/02/22 06:44 [medline]
PHST- 2024/02/22 06:43 [pubmed]
PHST- 2024/02/22 03:51 [entrez]
PHST- 2024/02/13 00:00 [pmc-release]
AID - S2405-8440(24)02099-1 [pii]
AID - e26068 [pii]
AID - 10.1016/j.heliyon.2024.e26068 [doi]
PST - epublish
SO  - Heliyon. 2024 Feb 13;10(4):e26068. doi: 10.1016/j.heliyon.2024.e26068. 
      eCollection 2024 Feb 29.