... computational geotechnics fibre-optic monitoring finite-element analysis geohazards ground movements sensors subsidence Sinkholes are a common geohazard consisting of a hole or depression formed in the ground surface due to the subsurface collapse of a cavity (Jennings et al., 1965...

...Jingmin Xu; Luorui Zheng; Geyang Song; Dingwen Zhang; Brian Sheil; Alec M. Marshall Urban tunnelling projects pose significant risks to the integrity of nearby structures due to ground movements induced by the excavation process. Embedded walls are commonly employed as a protective measure...

... engineers. Some of the seismic codes allow construction of buildings in the vicinity of active faults after a special study, and some other codes prohibit the construction of essential structures in the vicinity of active faults due to the high possibility of structural damage caused by ground movement...

... the progressive variations of ground movement, earth and pore water pressure in the soil adjacent to the trench during and shortly after the concreting process, which is consistent with the reported measurements. Diaphragm walls and bored piles are used worldwide as earth-retaining structures and foundations...

... ground movements model tests monitoring Sinkhole failures are among the most common and disruptive shallow geohazards (Cooper & Calow, 1997 ; Banks et al., 2015). A sinkhole is a depression formed at the ground surface caused by the dissolution of carbonate rocks at depth...

...-density polyethylene (HDPE) pipe was investigated under differential ground movements imposed using a facility that simulates a normal fault. Two experiments were undertaken in this facility. In the first experiment, the kinematic responses of the pipe joint (i.e. axial, shear displacements and rotational...

... be expressed as (see Fig. 2(b)) collapsed settlement dewatering environmental engineering failure ground movements partial saturation theoretical analysis Numerical, analytical and empirical methods have been proposed in the geomechanical modelling of sinkhole collapse. Among the former...

..., sufficient for the electrolevels and their carriages, and a 5·8 mm wall thickness, with the inner surface smooth and the outer one ribbed. 07 04 2019 10 06 2020 © 2020 Thomas Telford Ltd 2020 embankments field instrumentation ground movements monitoring pore pressures vegetation...

... © 2020 Thomas Telford Ltd 2020 ground movements numerical modelling soil/structure interaction temperature effects tunnels & tunnelling Owing to rising awareness of the negative impacts of burning fossil fuels on the environment, as well as diminishing resources, interest...

... developed to model sand–pipe interaction during relative ground movement episodes while accurately controlling the density and uniformity of sand around the pipe. Digital imaging and particle image velocimetry equipment are integrated with the rig, so as to track the evolution of the failure surface...

... ≤ ϕ ′ − δ For the second family of local mechanisms (Figs 2(c) and 2(d)) the horizontal component of the force on the uphill wall is calculated analogously to 17 05 2017 10 11 2017 © 2017 Thomas Telford Ltd 2017 earth pressure failure ground movements limit...

... − 1 ⋅ 38 x 2 ( H + R ) 2 + 0 ⋅ 69 z 2 H 2 05 03 2017 27 06 2017 © 2017 Thomas Telford Ltd 2017 diaphragm & in situ walls ground movements tunnels & tunnelling Tunnelling in urban environments is a challenging...

... of this on the resulting tunnelling-induced settlements. The scope of the work was limited to movements in a plane perpendicular to tunnels driven in clay. Ground movements resulting from the construction of bored tunnels are well-defined for the case of a single tunnel in ‘greenfield’ conditions (Peck, 1969...

... instrumentation ground movements monitoring numerical modelling tunnels & tunnelling As more tunnels are constructed in urban areas to facilitate infrastructure systems, the subsurface environment becomes more congested. The situation where a new tunnel (NT) is constructed in the vicinity...

... 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...

... 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...

... = γ H 1 + f d H / D 3 Δ q u = 0 ⋅ 02 H 23 06 2016 16 03 2017 © 2017 Thomas Telford Ltd 2017 buried structures earthquakes ground movements soil/structure interaction Pipelines normally operate under a combined loading...

... improvement ground movements grouting Jet grouting is one of the most effective ground improvement techniques, and is commonly used to improve a soft deposit to ensure safety during construction of tunnels (Ni & Cheng, 2011 , 2015 ; Wu et al., 2015a ; Shen et al., 2014...

... construction. Smaller volume losses were recorded in the vicinity of the existing Central Line tunnels, compared with the greenfield location, suggesting that their presence inhibited the development of ground movements. Asymmetric settlement troughs developed due to either the nearby pre-existing tunnels...

... are multiplied by 1 and 1/N in a centrifuge, respectively. Therefore, the Reynolds number represented in equation (3) coincides in the prototype and model scales 23 11 2014 12 02 2016 © 2016 Thomas Telford Ltd 2016 centrifuge modelling ground improvement ground movements...