...Peter J. Hensman; Zhandos Y. Orazalin; Brian B. Sheil This paper describes the monitoring of the construction of a deep underground waste storage bunker for the PROTOS energy-from-waste facility in Chester, UK. A key element of the construction process was a 12 m deep excavation in soft clays...

..., accurately and spatiotemporally continuously measure water vapour content in DSLs. Fibre-optic sensing technology has received extensive attention recently because of its small size, high sensitivity, anti-electromagnetic interference, low cost and real-time monitoring (Xie et al., 2023 , 2024...

... in understanding the cracking mechanism. This study presents a novel framework for monitoring and early detecting soil cracking by utilising the distributed fibre optical sensing (DFOS) technique based on optical frequency domain reflectometry (OFDR). DFOS-OFDR was integrated into a set of experimental testing...

... for the incorporation of DFOS in the construction of critical infrastructure to enable early detection of sinkhole formation and thus provide an opportunity for remedial action to prevent catastrophic failures. In addition to proving the feasibility of using DFOS for monitoring of sinkhole formation, the test...

... became denser when more cross-linker was added during the synthesis) 18 05 2021 02 08 2021 © 2021 Thomas Telford Ltd 2021 field instrumentation monitoring suction Matric suction is a stress state variable required to determine the engineering properties...

...Sinan Acikgoz; Antonio Luciano; Mark Dewhirst; Matthew J. Dejong; Robert Mair Heritage masonry structures require detailed monitoring during nearby underground construction, to address the concerns of building owners and mitigate uncertainties relating to the soil–structure system. This paper...

...Jiang Chen; Xiao Fang; Fei Cheng; Qi Ge; Feng Xiong Seepage monitoring is an important issue in the health monitoring and performance evaluation of geotechnical engineering, and one of the effective ways to monitor seepage is the thermal method. Based on the coupling effects between the seepage...

...) with a length of N, the AIC value is formulated as equation (2) . Detailed illustrations of AIC calculation are referred to in Sleeman & Van Eck (1999) . 05 09 2019 15 06 2020 © 2020 Thomas Telford Ltd 2020 failure laboratory tests monitoring particle-scale behaviour...

... and pore pressures were measured. This paper describes the instrumentation and monitoring techniques that were adopted and presents the findings from the study. It was found that non-recoverable seasonal movements occur in both the ash fill and the clay fill. The former occur in dry weather, particularly...

... parameter in assessing the impact of displacement. Owing to the installation limitations and the precision deficiency of conventional monitoring systems, measuring such curvature deformations, especially locally, has been a challenging task. In this paper, the curvature measurement data of the following two...

... cycles of seasonal movement caused a small but gradual ratcheting upward of pile bending moments. The largest bending moments measured over 6 years of monitoring were those resulting from the initial inward shrinkage of embankment, which reached about 25% of the design capacity of the piles. At the end...

.... consolidation deformation geophysics laboratory tests monitoring sands Granular soils mobilise shearing resistance through inter-particle friction and interlocking (i.e. dilation, particle rearrangement and particle damage) (Sadrekarimi & Olson, 2011). Stresses applied to the boundary of a soil...

...M. S. P. Wan; J. R. Standing; D. M. Potts; J. B. Burland The ground response, in terms of surface and subsurface displacements, to twin-bore Crossrail tunnel construction beneath a research monitoring site in Hyde Park, London, using earth-pressure-balance machines (EPBMs) in London Clay, has...

... and the transport of sulfate salts dissolved in the massif water. Rock damage is described by the development of a network of fractures that increases permeability and allows gypsum crystal growth. Field information, laboratory data and monitoring records available for Lilla tunnel, located in the province...

... are discussed. Conclusions are drawn about how the relative position of the excavation face of the NT in relation to the ET's axis affects the latter's behaviour. Cross-sectional and longitudinal deformations of the ET are discussed, leading to recommendations for field monitoring of similar interaction cases...

... 2017 © 2017 Thomas Telford Ltd 2017 field instrumentation ground movements monitoring settlement tunnels & tunnelling Using earth pressure balance machines (EPBMs) to construct tunnels in urban environments has become increasingly popular because they can be effectively...

... an expanding displacement field around the tunnels rather than the contracting fields usually observed. The field monitoring results indicated that, during construction, zones of influence existed around tunnels, where the ground and piles were subjected to different degrees and senses of relative vertical...

... soil model (named M2-SKH). This model, when used for the St James's Park greenfield site, provided excellent predictions of tunnelling-induced ground movements. Comparison of the results from the analysis of the Hyde Park greenfield site with associated field monitoring data also suggests excellent...

... this model, a new method to predict the ultimate settlement and the coefficient of consolidation using monitoring settlement data is proposed. The accuracy of the proposed method is verified against oedometer test and field monitoring data. For the cases verified, the ultimate settlement predictions from...

... Park with extensive surface and subsurface monitoring arrays are presented and discussed. The Crossrail tunnels at the site are 34·5 m below ground, deeper than those in most case histories of tunnelling in stiff clay in the UK. This paper characterises the tunnelling-induced ground response, both...