The Detection of the Boulders in Metro Tunneling in Granite Strata Using a Shield Tunneling Method and a New Method of Coping with Boulders

Li, Bo; Wu, Li; Xu, Changmao; Zuo, Qingjun; Wu, Shuanglan; Zhu, Binbin

doi:10.1007/s10706-016-0034-6

Cited by 12 publications

(6 citation statements)

References 11 publications

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“…Almost half of the EGR research articles were focused on underground civil planning (geotechnics) cases in urban areas (56 articles). The most popular topic was tunnelling, [53][54][55][56] underground spaces, [57][58][59] and geotechnical modelling. [60][61][62][63] Case studies for these topics were mostly done in developed countries such as the USA (e.g., Los Angeles, New York, San Francisco, Boston), Japan (Tokyo), Canada (e.g., Metro Toronto, Ontario, Saskatchewan), United Kingdom (London), The Netherland, Singapore, etc.…”

Section: Research Topic Interests In Urban Geologymentioning

confidence: 99%

Discovering research trends of urban geology based on a bibliometric analysis

et al. 2021

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Urbanization contributes to the emerging urban areas across the world. The importance of geology to ensure sustainability, has led to many research publications in the urban geology. This paper aims to discover the research trends through a bibliometric analysis of articles indexed within the Scopus database from 1950 to 2018 on topics related to geology and urban. The analysis found a significant increase in publications during 1999-2016, especially after the 2004 Indian Ocean earthquake and tsunami disaster. The next finding of this study is related to research interest clusters: engineering geological hazard investigation and risk assessment in the urban area (EGR); social geology and urban sustainability (SGS); and urban hydrology and water management (HGW). The EGR studies were mostly in underground engineering geology (geotechnics). In contrast, the least attention was given to the interaction between geology and land-use planning, due to the SGS issues (e.g., urban planning and land use suitability assessment). This study may serve as a platform for scholars to understand the current status and future directions of urban geology.

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Section: Research Topic Interests In Urban Geologymentioning

confidence: 99%

Discovering research trends of urban geology based on a bibliometric analysis

et al. 2021

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“…Deep boulders have become one of the problems threatening subway tunnel construction. However, the spacing between drilling holes in metro engineering is usually 40-50 m [1]. Such a distance leads to a low probability of discovering boulders.…”

Section: Introductionmentioning

confidence: 99%

“…In the last few decades, geophysical prospecting techniques [2][3][4] and inversion methods [5] have made great progress, and some have been used in engineering, proving their validity [6][7][8][9][10][11][12][13][14][15]. At the same time, some geophysical exploration methods have been applied to identify boulders, including ground-penetrating radar [12] and microtremor surveying [1]. However, the resolution of surface prospecting methods is limited, and the low signal-to-noise ratio creates the possibility of increased artifacts [1,16].…”

Section: Introductionmentioning

confidence: 99%

Synthetic Study of Boulder Detection Using Multi-Configuration Combination of Cross-Hole ERT and Its Field Application in Xiamen Metro, China

et al. 2021

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With the fast development of urban rail transportation, shield construction has been widely used in tunnel construction in China. It is very important to detect the random distribution of boulders, which may cause geological problems. Cross-hole electrical resistivity tomography (ERT) has the advantage of precise detection, but it has not been systematically studied in solitary rock detection. Therefore, we set up several numerical models and proposed weighted inversion, to improve the capacity for detecting boulders. Subsequently, the method was applied to the Xiamen Metro Line 1, where it was highly likely to encounter boulders. All the test boreholes revealed the presence of boulders, and their location and size were consistent with the geophysics results. This study demonstrated the suitability of weighted inversion based on a multi-configuration combination of cross-hole ERT for the detection of boulders. This case study provides new engineering perspectives on how to detect boulders.

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“…With the rapid development of urbanization, the utilization rate of space above the ground is gradually saturated, and the ground traffic is gradually difficult to meet the increasing demand of residents' traffic [1]. Therefore, the rail transit which can be built underground has become an effective solution.…”

Section: Introductionmentioning

confidence: 99%

Correlation Between Railway Subgrade Settlement and Shield Tunneling Construction

2019

IJOMAM

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With the rapid development of cities, relevant rail transit construction also develops at a high speed. However, the construction space above the ground is limited, and rail transit covering large construction area is often constructed underground, so the shield tunnel is bound to be used for the underground rail transit construction. In this study, the influence of shield tunneling construction on railway subgrade was analyzed using numerical simulation method, and the influence of stratum reinforcement measures on subgrade in construction process was also analyzed. The results showed that shield tunneling construction could cause subgrade settlement and the influence became larger and larger with the proceeding of project. When the left line was completed, the maximum settlement point was located above the center line of the left tunnel, and the settlement was 7.506 mm. When the right line was completed, the maximum settlement point was located above the central line of the two tunnels, and the settlement was 9.970 mm. Grouting reinforcement measures for stratum around the tunnel could significantly reduce the settlement; the maximum settlement decreased by 62.84% when the left line was completed and 58.65% when the right line was completed. To sum up, shield tunneling construction of railway will cause subgrade settlement, and stratum grouting reinforcement measures can significantly reduce subgrade settlement.

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The Detection of the Boulders in Metro Tunneling in Granite Strata Using a Shield Tunneling Method and a New Method of Coping with Boulders

Cited by 12 publications

References 11 publications

Discovering research trends of urban geology based on a bibliometric analysis

Discovering research trends of urban geology based on a bibliometric analysis

Synthetic Study of Boulder Detection Using Multi-Configuration Combination of Cross-Hole ERT and Its Field Application in Xiamen Metro, China

Correlation Between Railway Subgrade Settlement and Shield Tunneling Construction

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The Detection of the Boulders in Metro Tunneling in Granite Strata Using a Shield Tunneling Method and a New Method of Coping with Boulders

Cited by 12 publications

References 11 publications

­­­Discovering research trends of urban geology based on a bibliometric analysis

­­­Discovering research trends of urban geology based on a bibliometric analysis

Synthetic Study of Boulder Detection Using Multi-Configuration Combination of Cross-Hole ERT and Its Field Application in Xiamen Metro, China

Correlation Between Railway Subgrade Settlement and Shield Tunneling Construction

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Discovering research trends of urban geology based on a bibliometric analysis

Discovering research trends of urban geology based on a bibliometric analysis