Herein, the
research results related to the laserassisted rock breaking
technology in China and abroad are summarized to investigate its mechanism and
application value and provide effective theoretical guidance for researchers.
First, the definition of laser and laserassisted rock
breaking technology is introduced and the related mechanism is preliminarily
presented. Second, the research methods related to the technology are
summarized from the aspects of experiment, theory, and simulation. Experiments
can directly reveal the process of laserrock
interaction and the rock breaking effect; however, it is difficult to monitor
and obtain the variation law of temperature and stress fields during laser
irradiation on rocks in real time. Numerical simulation methods can provide
detailed characteristic information that is difficult or impossible to obtain
by experiments and thereby provide effective guidance for further research on
the laserassisted rock breaking mechanism. Third,
based on the aforementioned research methods and considering laser drilling as
an example, the important factors influencing laserassisted
rock breaking are comprehensively and systematically analyzed from the
following aspects: laser parameters, rock properties, working environment, and
methods. Finally, based on the research results related to the laserassisted rock breaking technology in the field of oil and gas
drilling, the research status of the technology in the field of tunnel excavation
and future development directions are discussed. The results show that the
technology can be well applied in the field of tunnel excavation and greatly
improves tunnel excavation efficiency. However, the current research on laserassisted tunnel excavation is still in the laboratory research
stage, and perfect research equipment and evaluation indicators are lacking. In
future, we should focus on improving the rock breaking research system of laserassisted tunneling equipment, and systematically and comprehensively
study rock breaking using laserassisted cutters.
ZHENG Yakui
,
KUANG Minghai
,
ZHANG Kui
,
WANG Dinghua
,
NIE Xiong
. Research Progress of LaserAssisted
Rock Breaking Technology[J]. Tunnel Construction, 2023
, 43(8)
: 1282
-1298
.
DOI: 10.3973/j.issn.2096-4498.2023.08.003
