With the
continuous development of the economy, the improvement of the comprehensive
national strength, and the application of high and new technologies, the
drilling and blasting(D&B) tunnel construction technology has achieved
unprecedented rapid development in China. In this paper, in order to sum up
relevant experience for reference in subsequent key and difficult projects, the
D&B construction technology is reviewed and summarized, and its future
application is prospected. Firstly, the development history of the D&B
construction technology in China is reviewed, and five major technical
breakthroughs are expounded in turn, including the adoption of the wet
drilling, the introduction of the multiboom rockdrilling jumbo, the application of the emulsion explosives, the wide
application of the Nonel detonator initiation system, and the application and
popularization of the industrial digital electronic detonators. Then, the
concept and method of D&B construction, the equipment matching for
mechanized construction, and the state of art and development trend of relevant
technologies are introduced, involving the ventilation technology for extralong tunnels and extralong tunneling
distance, the construction technology for tunnels with extralarge cover and extremely complex geological conditions, the
construction technology for extralong underwater
tunnels with high water pressure, the construction technology for tunnels with
extralarge crosssections and
tunnel groups, and the technology of advance geological prediction. Finally,
the problems that need to be solved in the future, such as the intelligent
tunnel construction technology and the green and lowcarbon
construction technology, are considered. The research shows that the D&B
method has significant advantages in the construction of long tunnels with
complex geological conditions, and will still play a major role in tunnel
construction within a certain period of time. In the future, the focus shall be
laid on the development of mechanized, intelligent, green, and lowcarbon construction technologies to further improve the efficiency
and level of D&B construction.
TAN Zhongsheng
,
WU Jingang
. Review and Prospects of Drilling and Blasting Tunnel
Construction Technology in China[J]. Tunnel Construction, 2023
, 43(6)
: 899
-920
.
DOI: 10.3973/j.issn.2096-4498.2023.06.001