Journal ArticleDOI
Pipejacking clogging detection in soft alluvial deposits using machine learning algorithms
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TLDR
A baseline assessment of clogging in slurry-supported pipejacking is performed using a combination of TBM parameters and semi-empirical diagrams proposed in the literature, and the potential for one-class support vector machines (OCSVM), isolation forest and robust covariance (Robcov) to assess the tendency for clogging is explored.About:
This article is published in Tunnelling and Underground Space Technology.The article was published on 2021-07-01. It has received 34 citations till now. The article focuses on the topics: Clogging.read more
Citations
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Effects of chemical contamination on microscale structural characteristics of intact loess and resultant macroscale mechanical properties
TL;DR: In this article, the micro-scale structural characteristics of the loess exposed to acetic acid, phosphoric acid, sodium hydroxide, and sodium sulfate respectively are studied using scanning electron microscopy, X-ray diffraction, and energy dispersive spectroscopy tests.
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A comparative study of different machine learning algorithms in predicting EPB shield behaviour: a case study at the Xi’an metro, China
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Revealing the Enhancement and Degradation Mechanisms Affecting the Performance of Carbonate Precipitation in EICP Process
TL;DR: Wang et al. as discussed by the authors explored the potential use of the EICP technology for the protection of heritage buildings in NW China and found that the modified version performed the best with the highest calcite precipitation.
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Investigating microscale structural characteristics and resultant macroscale mechanical properties of loess exposed to alkaline and saline environments
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Investigating immobilization efficiency of Pb in solution and loess soil using bio-inspired carbonate precipitation.
TL;DR: In this paper , the authors explored the potential of applying the MICP technology to remediate Pb-rich water bodies and Pbcontaminated loess soil sites, and found that the Pb immobilization efficiency of above 85% is attained through PbCO3 and PB(CO3)2(OH)2 precipitation.
References
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Journal ArticleDOI
Interactions of landslide deposit with terrace sediments: Perspectives from velocity of deposit movement and apparent friction angle
TL;DR: In this article, a total of 40 loess landslides in the South Jingyang Platform, Shaanxi Province, were investigated in detail, with an emphasis on the geomorphology feature and the internal geometry of geology.
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Assessment of clay soils and clay-rich rock for clogging of TBMs
Markus Thewes,Fritz Hollmann +1 more
TL;DR: In this paper, the authors have more than 15 years of experience in practice and scientific research with the problem of clay clogging of TBMs, and they have shown the occurrence and risk for clogging in varying ground types and for different machine components, summarizes the available characterization methods for the stickiness of the ground, discusses a variety of laboratory tests for the assessment of clogging potential, explains a recently developed diagram for assessing clogging risks for all types of tunnelling machines and introduces a new testing scheme for the evaluation of sedimentary rocks regarding clogging.
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Effects of heating on compositional, structural, and physicochemical properties of loess under laboratory conditions
TL;DR: In this article, the changes in loess properties at laboratory temperatures ranging from 20 to 1000°C were examined and the results indicated that higher temperature heating can induce important changes in the formation of aggregation as a result of changes in structure and composition.
Clogging of TBM drives in clay – identification and mitigation of risks
Sören Erdem,Tülin Solak +1 more
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Effects of slurry on stickiness of excavated clays and clogging of equipment in fluid supported excavations
TL;DR: In this article, the authors investigated the effects of the stickiness of the excavated clay by means of a laboratory experimental study using novel stickiness tests: the mixing test and a model TBM cutter-head test.