Dynamic control technology of water disaster in railway tunnel with bad geology in plateau

doi:10.16265/j.cnki.issn1003-3033.2020.S1.016

Abstract

Abstract: In order to solve the key problem of the soft rock tunnel passing through the water-rich stratum on the plateau, the key technology of dynamic control of water disaster was studied by TSP. Firstly, the high-precision comprehensive quantitative identification of groundwater was put forward. Then, the estimation technology of water inflow and the anti-slope drainage and its optimization technology of dynamic monitoring of water inflow were put forward, which were verified by an example of Changcaogou tunnel of Dunge railway. The research results show that the technology of high precision comprehensive quantitative identification and estimation of groundwater inflow based on seismic wave, induced polarization, ground penetrating radar and transient electromagnetic method, as well as the reverse slope drainage and its optimization technology of water inflow dynamic monitoring, it can realize the dynamic risk management of groundwater during the construction of extra-long tunnel. This technology can reduce the risk of tunnel construction, ensure the safety of tunnel construction, enrich the methods of tunnel drainage, and protect the water source ecological environment of the tunnel site.

Key words: bad geology of plateau, soft rock tunnel, tunnel seismic prediction(TSP), water inflow, reverse slope drainage

CLC Number:

X924.4

ZHANG Xiangli, FAN Fei, LI Jiaxing, WANG Yingzi. Dynamic control technology of water disaster in railway tunnel with bad geology in plateau[J]. China Safety Science Journal, 2020, 30(S1): 84-91.

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