In order to
accurately predict the occurrence of coal seams in front of the tunnel face and
realize the threedimensional visual display and
dynamic measurement of coal seams, the Huangjiagou highgas tunnel of LanzhouHaikou expressway
expansion project is taken as the engineering background. First, advance
drilling is carried out in the gas drainage face and the drilling parameters
are recorded in detail. Then, the obtained drilling parameters are used for
data processing using the Malab software, so as to acquire the spatial threedimensional coordinates of coal seam floor and roof. On this basis,
a threedimensional visual coal seam occurrence model
is constructed and the occurrence of coal seam is analyzed. The research
results show that, the average true thickness of the coal seam crossed by
Huangjiagou tunnel is about 3.35 m, the dip angle of the coal seam is about 33°, and the included angle between the coal seam strike and the axial
direction of the tunnel is about 64°. The research
results are almost consistent with the actual coal seam occurrence detected in
the project, which shows the correctness of the established model and provides
a suitable means for the advance detection of coal seam of gas tunnel.
CAO An, HUANG Fei, XU Zhiren, ZHU Yuntao, LI Shuqing, LUO Taiyou, LIU Yong
. Research on Advanced Detection Technology of Tunnel
Coal Seam Based on Matlab[J]. Tunnel Construction, 2022
, 42(S1)
: 191
-196
.
DOI: 10.3973/j.issn.2096-4498.2022.S1.022
