Measuring annular thickness of backfill grouting behind shield tunnel lining based on GPR monitoring and data mining

Zeng, Li; Zhang, Xiaobing; Xie, Xuansong; Zhou, Biao; Xu, Chao; Lambot, Sébastien

doi:10.1016/j.autcon.2023.104811

Cited by 14 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Automatic feature detection methods have been applied to a variety of applications of RES. Some of these include asphalt/pavement thickness measurements (Zhang et al, 2022), subsurface distress detection (Li et al, 2022), detection of structures beneath rail tracks (Peng Xu et al, 2004), concrete feature tracking (Todkar et al, 2017), mine detection (Frigui et al, 2005;Reichman et al, 2017), and tunnel lining (Zeng et al, 2023). As for ice, this task is traditionally done manually or semiautomatically.…”

Section: Timeline Of the Methods Usedmentioning

confidence: 99%

Review article: Feature tracing in radio-echo sounding products of terrestrial ice sheets and planetary bodies

Moqadam,

Eisen

2024

Preprint

View full text Add to dashboard Cite

Abstract. Radio-echo sounding (RES) is a useful technique for measuring the subsurface properties of ice sheets and glaciers. One of the most important and unique outcomes is the mapping of ice sheets' englacial layer stratigraphy, mainly consisting of isochronous reflection horizons. Mapping those is still a labour-intensive task. This review provides an overview of state-of-the art (semi-)automated methods for identifying ice surface, basal, and internal reflection horizons from radargrams in radioglaciology. We discuss a variety of methods which were developed or applied to RES data over the last decades, including image processing, statistical techniques, and deep learning approaches. For each approach, we briefly summarize their procedures, challenges, and potential applications. Despite major advances, we conclude that gaps remain in effectively mapping internal reflection horizons in an automated way, but with deep learning representing a potential advancement. This paper aims to inform researchers and practitioners in radioglaciology about current and future trends in mapping the englacial stratigraphy of ice sheets.

show abstract

Section: Timeline Of the Methods Usedmentioning

confidence: 99%

Review article: Feature tracing in radio-echo sounding products of terrestrial ice sheets and planetary bodies

Moqadam,

Eisen

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The construction of subway tunnels through karst strata and neighboring buildings has complexity, concealment, and uncertainty, which leads to difficulties in shield tunneling and great construction risks and is prone to cause major safety accidents, so it is of positive practical significance to carry out the research on the risk assessment and control of shield tunneling construction in karst strata and neighboring buildings [7][8][9]. Shield tunnel construction has become one of the important construction methods in the field of underground engineering with its safety and high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Modeling of the accurate application of the Kernel Efficiency Method in the proportioning process of shield tunnel construction

Wang,

2024

Applied Mathematics and Nonlinear Sciences

View full text Add to dashboard Cite

The existing control strategies for subway construction struggle to address the challenges posed by the impact of large-diameter shield-driven underpass subway tunnels on soil settlement. In this paper, based on the mechanism of ground settlement of the shield tunnel under the KNX method, the influence of the underpass tunnel on the existing tunnel and its surrounding soil stress-strain characteristics is calculated by the Peck superposition method. The KNX method is optimized by optimizing the ratio of KNX slurry and the grouting pressure to control the existing tunnel and the ground settlement. The geotechnical general finite element analysis software is being introduced to conduct numerical simulation and engineering application experiments to verify its effectiveness. The results show that when the bonding force of the grouting material is 350Pa-s, the maximum value of the variation is 3.91mm, and the mobility is more suitable, which can effectively fill the void of the shield machine and reduce the settlement of the foundation. When the grouting pressure is 280kN/m2, the maximum contraction of the tunnel is 6.25mm, which can ensure the safety of the existing tunnel on the basis of the tunnel so that the actual settlement of the soil in the tunnel is minimized. Comprehensively, the optimization of the ratio of the KNP method in the control of the deformation characteristics of the soil and structures under the shield tunnel has effectiveness and can effectively provide theoretical and technical guidance for the construction of subway tunnels under the large-diameter shield under the subway.

show abstract

Study on the penetration capability of GPR for the steel-fibre reinforced concrete (SFRC) segment based on numerical simulations and model test

Li,

Xie,

Huang

et al. 2023

Construction and Building Materials

View full text Add to dashboard Cite

Measuring annular thickness of backfill grouting behind shield tunnel lining based on GPR monitoring and data mining

Cited by 14 publications

References 28 publications

Review article: Feature tracing in radio-echo sounding products of terrestrial ice sheets and planetary bodies

Review article: Feature tracing in radio-echo sounding products of terrestrial ice sheets and planetary bodies

Modeling of the accurate application of the Kernel Efficiency Method in the proportioning process of shield tunnel construction

Study on the penetration capability of GPR for the steel-fibre reinforced concrete (SFRC) segment based on numerical simulations and model test

Contact Info

Product

Resources

About