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Improving mobility in the intensive care unit with a protocolized, early mobilization program: observations of a single center before-and-after the implementation of a multidisciplinary program

期刊: ACUTE AND CRITICAL CARE, 2022; 37 (3)

Background: Early intensive care unit (ICU) protocolized rehabilitative programs have been de-scribed previously, yet with differing starting time poi......

Effects of soil spatial variability on structural reliability assessment in excavations

期刊: UNDERGROUND SPACE, 2020; 5 (1)

In this study, the effects of soil spatial variability in braced excavations are investigated by focusing on three structural responses: wall bending ......

Numerical investigations on the seismic response of a subway tunnel embedded in spatially random clays

期刊: UNDERGROUND SPACE, 2020; 5 (1)

Earthquakes are likely to significantly affect the workability of subway tunnels by introducing severe damage or excessive deformation of the tunnel s......

Laboratory study of fluid properties owing to cutting intrusions during horizontal directional drilling

期刊: UNDERGROUND SPACE, 2020; 5 (1)

During horizontal directional drilling installations, a primary function of drilling fluids is to yield drill cuttings and lubricate the product pipe.......

Simple approach for solution of the quasi-plane-strain problem in a circular tunnel in a strain-softening rock mass considering the out-of-plane stress effect

期刊: UNDERGROUND SPACE, 2020; 5 (4)

The out-of-plane stress is sometimes the major or intermediate principal stress in a circular tunnel opening. The influences of the out-of-plane stres......

Estimation of failure probability in braced excavation using Bayesian networks with integrated model updating

期刊: UNDERGROUND SPACE, 2020; 5 (4)

A probabilistic model is proposed that uses observation data to estimate failure probabilities during excavations. The model integrates a Bayesian net......

A review on effects of different factors on gas explosions in underground structures

期刊: UNDERGROUND SPACE, 2020; 5 (4)

Underground structures are normally located in highly-confined and congested spaces, which may lead to severe gas explosion accidents, with significan......

A discrete element exploration of V-shaped breakout failure mechanisms in underground opening

期刊: UNDERGROUND SPACE, 2020; 5 (4)

V-shaped breakouts, which may appear in underground opening during excavation, are the results of two different failure mechanisms: tensile spalling a......

Variation of hydro-environment during past four decades with underground sponge city planning to control flash floods in Wuhan, China: An overview

期刊: UNDERGROUND SPACE, 2020; 5 (2)

This paper presents a review of the variation in the hydro-environment over the past four decades in Wuhan, China, and discusses its close relationshi......

Modeling hydraulic fracture in heterogeneous rock materials using permeability-based hydraulic fracture model

期刊: UNDERGROUND SPACE, 2020; 5 (2)

Hydraulic fracturing is one of the most important techniques for enhancing oil/gas production. The permeability-based hydraulic fracture (PHF) model, ......

Uncertainty quantification and reduction in the characterization of subsurface stratigraphy using limited geotechnical investigation data

期刊: UNDERGROUND SPACE, 2020; 5 (2)

Subsurface stratigraphy is critical to the design, construction, and subsequent performance of geotechnical structures. However, in practice it is imp......

Adaptive algorithm for estimating excavation-Induced displacements using field performance data

期刊: UNDERGROUND SPACE, 2020; 5 (2)

Empirical models provide a practical way to estimate the displacements induced by excavations. However, there are uncertainties associated with the pr......

Analysis of a tunnel failure caused by leakage of the shield tail seal system

期刊: UNDERGROUND SPACE, 2020; 5 (2)

This paper presents an analysis of a tunnel failure accident during shield tunnel construction on Foshan Metro Line 2 in China. The failure is caused ......

Investigation on thermo-mechanical behavior of reinforced concrete energy pile with large cross-section in saturated sandy soil by model experiments

期刊: UNDERGROUND SPACE, 2020; 5 (3)

Energy piles are a new type of heat exchange systems with buried pipes in a pile foundation, which optimize a ground source heat pump system for the u......

Estimation of hydraulic parameters from pumping tests in a multiaquifer system

期刊: UNDERGROUND SPACE, 2020; 5 (3)

The hydrogeologic conditions in Tianjin, China, are characterized by a system of multiple alternating aquifers and aquitards and a high groundwater le......

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