Mechanization is essential for improving the safety
and environmental conditions of tunnel drilling and blasting operations.
Currently, China is facing serious problems with regard to tunneling, such as
difficulties in recruiting blasting workers, fully utilizing the drilling
trolley, construction by more workers, and serious overexcavation. To address
these problems, drilling using highefficiency rock drilling
trolley and charging using underground special explosivemixed loading vehicles are needed. However, the tunneling method and
management system are not compatible with the drilling trolley, the drilling
trolley is expensive, and the mechanized charging has regulatory obstacles.
Following solutions to these problems are proposed from the aspects of
technology and management: (1) Tunneling method must be improved with the
reinforcement scheme first, followed by large crosssection
excavation for weak surrounding rocks to match with the mechanized drilling and
blasting operations. (2) The malfunction rate and cost of the homeproduced drilling trolley should be continuously reduced. (3) The
innovation in the civil explosives management system should be promoted, and
the purchasesale and administrative licensing of mixedexplosive vehicles should be simplified based on the process control
platform for explosive purposes and amount. (4) The tunnel drilling and
blasting professionals should be motivated. (5) The tunnel construction
management system should be further improved, and the international traditional
design and construction general contracting mode should be popularized.
YANG Nianhua
.
Mechanization Development of Drilling and Blasting
Operations in Tunneling
[J]. Tunnel Construction, 2021
, 41(12)
: 2023
-2028
.
DOI: 10.3973/j.issn.2096-4498.2021.12.001