A collection technical
scheme for multiple drilling information is proposed to obtain the drilling
information which can more accurately reflect the characteristics of tunnel
surrounding rocks. First, the implementation plans of direct measurement, indirect
measurement, fitting calculation, and equipment communication are introduced.
Then, the diversity, high precision, synchronicity, and visualization
characteristics of drilling information collection technology are summarized.
Finally, drilling tests are carried out in groups according to the impact
pressure, propulsion pressure, sampling frequency, and depth resolution set by
the system. The results indicate that: (1)The drilling information collection
technical scheme is reasonable, which can meet the requirements of a maximum
time-domain acquisition frequency of 100
Hz and a minimum resolution scale of 1 mm for drilling depth. (2) The high
precision of drilling information collection plays a key role in identifying
the occurrence of small cracks in the surrounding rock, and the synchronization
of tunnel surrounding rock drilling information collection plays a key role in
data collection response. (3) The high-precision synchronous acquisition technology
of multi-dimensional drilling information in tunnel
surrounding rock provides a theoretical basis for establishing the relationship
between measurement parameters while drilling and surrounding rock information.
HUANG Zhu′an
. High Precision Synchronous
Collection Technology for Multiple Drilling Information
of Tunnel Surrounding Rocks[J]. Tunnel Construction, 2024
, 44(S2)
: 352
-360
.
DOI: 10.3973/j.issn.2096-4498.2024.S2.034