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Qingdao Tunnel

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Journal Article
Published: 23 December 2019
Journal of Environmental and Engineering Geophysics (2019) 24 (4): 629–639.
... subway construction. This paper describes the successful application of geological prospecting and grouting assessment at the tunnel site of Qingdao subway line No. 1. The study area is located in a coastal bedrock fissure water distribution area. It was decided to conduct surface grouting to reduce...
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Journal Article
Published: 23 December 2019
Journal of Environmental and Engineering Geophysics (2019) 24 (4): 537–547.
... such as water inrush and mud gushing, pose a major threat to metro construction. Geophysical survey techniques provide quick and relatively inexpensive ways to detect adverse geological structures ahead of the tunnel face. Left line of the R3 metro tunnel in Qingdao, China will pass an aquifer sand layer under...
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Image
Location and top view maps of the studied area: a) location of <b>Qingdao</b>, Chi...
Published: 23 December 2019
Figure 1  Location and top view maps of the studied area: a) location of Qingdao, China; b) the location of the subway line 1 of Qingdao; c) top view maps of the studied area; and d) photo of tunnel site.
Journal Article
Journal: Geophysics
Published: 28 November 2019
Geophysics (2020) 85 (1): D37–D43.
... operation in well completion, which penetrates through a cased borehole and creates tunnels in the formation to facilitate the flow of reservoir fluid into the wellbore. Given the size of the perforation bullet, the penetration depth, that is, the length of the tunnels, directly influences the outcome flow...
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Journal Article
Journal: Geophysics
Published: 29 November 2018
Geophysics (2019) 84 (1): MR37–MR44.
... storage, carbon dioxide geologic sequestration, hydrocarbon exploration and production, and tunnel engineering, among many others (e.g., Liu et al., 2000 ; Nelson, 2001 ; Maultzsch et al., 2003 ; Rubino et al., 2013 , 2014 ). Fractures control the flow and transport properties (e.g., Renshaw, 1996...
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Journal Article
Published: 23 December 2019
Journal of Environmental and Engineering Geophysics (2019) 24 (4): 569–578.
...., Guo, Q., 2018 , Assessment of electrical resistivity imaging for pre-tunneling geological characterization - A case study of the Qingdao R3 metro line tunnel : Journal of Applied Geophysics , 153 , 38 – 46...
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Journal Article
Published: 27 May 2020
Journal of Environmental and Engineering Geophysics (2020) 25 (1): 65–74.
... for geological detection and grouting assessment: A case study in Qingdao Subway Tunnel, China : Journal of Environmental and Engineering Geophysics , 24 , 629 – 639 . Hwang, J., Kim, D...
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Series: Investigations in Geophysics
Published: 01 January 2005
DOI: 10.1190/1.9781560801719.ch19
EISBN: 9781560801719
... and imaging subsurface anomalies. The use of higher frequency, i.e., radar, has high resolution, and has been used for imaging anomalies having high contrasts with the host rock. For example, Litle et al. (1979) and Lee et al. (1989) used crosshole radar to detect voids or tunnels, Lager and Lytle (1977) used...
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Journal Article
Published: 27 May 2020
Journal of Environmental and Engineering Geophysics (2020) 25 (1): 75–87.
... Logging Symposium , 32 , 51 – 56 . Li, X., and Xue G.Q., 2002 , A further developing advanced forecasting technology of tunnel and lane: Electromagnetic missile detecting technology...
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Journal Article
Published: 19 September 2019
Journal of Environmental and Engineering Geophysics (2019) 24 (3): 497–505.
... mines, and we can take advantage of the open tunnels to more accurately map internally to the mine workings. In the acquisition of 3D ERT, the E-scan method ( Li and Oldenburg, 1992 ), the roll-along method ( Dahlin and Bernstone, 1997 ), and the cross-diagonal survey method ( Loke and Barker, 1996...
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Journal Article
Published: 01 April 2004
The Canadian Mineralogist (2004) 42 (2): 469–483.
... origin; hydrothermal deposits typically have a very high Pd:Ir ratio ( Keays et al. 1982 ). More than 100 polished thin sections were prepared from samples of the three different types of ore taken from exploration and mining tunnels. The base-metal sulfides and platinum-group minerals were...
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Journal Article
Published: 13 April 2021
Journal of the Geological Society (2021) jgs2020-167.
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Journal Article
Journal: PALAIOS
Published: 16 April 2019
PALAIOS (2019) 34 (4): 229–243.
... D). Planolites are characterized by simple, horizontal, cylindrical tunnels, and are filled with darker sediments than the surrounding rock ( Fig. 6 A). Phycosiphon isp. are characterized by small-scale spreite that comprise repeated, narrow, U-shaped lobes. These traces are preserved in both...
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Journal Article
Published: 23 December 2019
Journal of Environmental and Engineering Geophysics (2019) 24 (4): 579–592.
... of the Qingdao submarine tunnel as an example. An array source transient electromagnetic interpretation method was used for the tunnel predictions. In this region, faults contact the sea water and the fractures are highly developed, which leads to the complex geological conditions. Transient electromagnetic...
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Image
Sketch map of the area of geophysical investigations: a) Location of the st...
Published: 23 December 2019
Figure 1.  Sketch map of the area of geophysical investigations: a) Location of the study area; b) map of Metro Line R3 in Qingdao (Li et al ., 2018); c) layout of the ERT survey lines relative to the tunnel on the surface; and d) general view of work area in the tunnel: seismic ahead
Journal Article
Published: 23 December 2019
Journal of Environmental and Engineering Geophysics (2019) 24 (4): fmv–fmvii.
... metro tunnel in Qingdao, China was under construction. The integrated prospecting scheme combined surface electrical resistivity imaging (S-ERT), seismic forward prospecting in tunnels, and tunnel-face and borehole electrical resistivity imaging (TBERI). With this approach, they successfully...
Journal Article
Published: 01 September 2020
Journal of Environmental and Engineering Geophysics (2020) 25 (3): 439–445.
... fellow of geophysics at the School of Geosciences, China University of Petroleum (East China), Qingdao, China. He has authored over ten papers in geophysics and engineering education. His research interests include quantifying complexity in subsurface systems; fractals theory in seismic interpretation...
Journal Article
Journal: Geophysics
Published: 26 March 2019
Geophysics (2019) 84 (3): E143–E154.
.... Sun X. Wang X. He R. , 2017 , Application of transient electromagnetic method in tunnel exploration : International Geophysical Conference, Qingdao, China , 489 – 492 . Zhu X. Su X. Tai H.-M. Fu Z. Yu C. , 2016 , Bipolar steep pulse current source for highly...
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Journal Article
Published: 19 May 2020
Canadian Journal of Earth Sciences (2020) 57 (12): 1428–1446.
... in the west and Sulu Terrane in the east, bordered by the Wulian–Qingdao–Yantai Fault ( Fig. 1 ). Corresponding author: Peng Chai (email: cx001chaipeng@163.com ). Copyright remains with the author(s) or their institution(s). Permission for reuse (free in most cases) can be obtained from...
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Journal Article
Journal: SEG Discovery
Published: 01 October 2015
SEG Discovery (2015) (103): 1–48.
..., given that most precious and base metal ore deposits were formed in once active hydrothermal systems. More intimate are familiarity with the geothermal gradient and the unforgettable experi- ence of hot ground conditions in poorly ventilated tunnels. In a few deep mine developments, very hot underground...