High-fidelity subsurface resistivity imaging incorporating borehole measurements for monitoring underground construction

Wang, Haoran; Lin, Chih‐Ping; Mok, Ting Hin; Wu, Po-Chang; Liu, Hsin-Chang

doi:10.1016/j.enggeo.2022.106558

Cited by 6 publications

(2 citation statements)

References 36 publications

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“…For the BS-ERT scheme, a symmetric effect is generated in some high-resolution configuration and at least two types of configurations are suggested to be used to evaluate and empress symmetric effect [13]. For CH-ERT scheme, ratio of the well distance and well depth is usually less than 0.75 to ensure the resolution and the combined configurations are necessary to improve the imaging quality [14,15].…”

Section: Introductionmentioning

confidence: 99%

A New Electrical Resistivity Tomography Scheme of Borehole-to-Surface-to-Cliff Detection and Imaging for Grotto Rock Structure

et al. 2023

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Grotto rock structure detection is precondition of the grotto protection and restoration. As a stable and non-destructive geophysical method, electrical resistivity tomography (ERT) is extensively used to detect the geological structure of the grottoes. However, the traditional ERT measurement scheme is challenging to satisfy the requirements of high accuracy and high resolution in the cliff region. Therefore, we propose a new borehole-to-surface-to-cliff ERT (BSC-ERT) scheme for grotto detection. The sensitivity patterns of five ERT schemes using three configurations (A-MN array, AB-MN array, and AM-BN array) are tested to show the detection capability of different configurations. Two numerical experiments show that the combination of borehole-to-surface ERT (BS-ERT) and surface-to-cliff ERT (SC-ERT) schemes using AM-BN array have better imaging effects and a more reasonable detection range, which is recommended to be implemented for future work. In addition, the numerical experiment also proves that the symmetric effect generated in the AM-BN array in BS-ERT scheme can be suppressed with the combination of the SC-ERT scheme.

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Section: Introductionmentioning

confidence: 99%

A New Electrical Resistivity Tomography Scheme of Borehole-to-Surface-to-Cliff Detection and Imaging for Grotto Rock Structure

et al. 2023

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“…A borehole coring permeability coefficient test is still the most commonly used testing method to determine permeability [27,28]. However, excavation and core drilling cause man-made damage to the wall, and increasingly less non-destructive testing methods are also used in the detection of wall quality [29][30][31][32]. Modoni et al [33] analyzed the quality of jet grouting with single-fluid and double-fluid jet grouting, and different grouting components and injection parameters through the indoor test of sample coring.…”

Section: Introductionmentioning

confidence: 99%

Study on the Construction Method and Effects of Ipsilateral, Multi-Nozzle, High-Pressure Jet Grouting Cut-Off Wall

Xie

Gao

et al. 2022

Sustainability

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High-pressure jet grouting is widely used in the construction of cut-off wall in hydraulic engineering. Compared to the high-pressure jet grouting used for foundation improvement, the high-pressure jet grouting cut-off wall of hydraulic engineering has lower requirements for the advance consolidation and provision of bearing capacity, and more focus on providing an anti-seepage effect and ensuring the continuous integrity of the wall. In the past, the research on high-pressure jet grouting focused more on the application to foundation treatments, and the research on the construction efficiency of cut-off wall is relatively insufficient. Therefore, in this study, a self-developed ipsilateral multi-nozzle jet grouting machine with a large drill diameter and construction method are proposed according to the construction characteristics of the embankment cut-off wall in hydraulic engineering. Based on the dyke protection projects, Jinggangshan navigation hydropower and Xingan navigation hydropower, the large-diameter, multi-nozzle, high-pressure jet cut-off wall test is carried out, and the wall forming effect of the cut-off wall is verified through the combination of indoor and outdoor tests. The results show that the proposed construction method can adapt to the formation conditions in which it is difficult to implement conventional high-pressure jet grouting, and obtains good construction efficiency. A favorable wall quality can be obtained by using more efficient large-diameter and ipsilateral multi-nozzle jet grouting in the construction of high-pressure jet cut-off wall.

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Integrated geophysical and geological surveys reveal new details of the large Montescaglioso (southern Italy) landslide of December 2013

Calamita

Gallipoli

Gueguen

et al. 2023

Engineering Geology

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High-fidelity subsurface resistivity imaging incorporating borehole measurements for monitoring underground construction

Cited by 6 publications

References 36 publications

A New Electrical Resistivity Tomography Scheme of Borehole-to-Surface-to-Cliff Detection and Imaging for Grotto Rock Structure

A New Electrical Resistivity Tomography Scheme of Borehole-to-Surface-to-Cliff Detection and Imaging for Grotto Rock Structure

Study on the Construction Method and Effects of Ipsilateral, Multi-Nozzle, High-Pressure Jet Grouting Cut-Off Wall

Integrated geophysical and geological surveys reveal new details of the large Montescaglioso (southern Italy) landslide of December 2013

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