Dalong Jin
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View article: Discovery of new topological insulators and semimetals using deep generative models
Discovery of new topological insulators and semimetals using deep generative models Open
Topological materials possess unique electronic properties and hold immense attraction to both fundamental physics research and practical applications. Over the past decades, the discovery of new topological materials has relied on the sym…
View article: Assessment of slurry chamber clogging alleviation during ultra-large-diameter slurry tunnel boring machine tunneling in hard-rock using computational fluid dynamics-discrete element method: A case study
Assessment of slurry chamber clogging alleviation during ultra-large-diameter slurry tunnel boring machine tunneling in hard-rock using computational fluid dynamics-discrete element method: A case study Open
To fundamentally alleviate the excavation chamber clogging during slurry tunnel boring machine (TBM) advancing in hard rock, large-diameter short screw conveyor was adopted to slurry TBM of Qingdao Jiaozhou Bay Second Undersea Tunnel. To e…
View article: Monitoring and Analysis of Shield Construction for Ultra-Close-Spaced Twin Tunnels: A Case Study of Suzhou Metro Line 7
Monitoring and Analysis of Shield Construction for Ultra-Close-Spaced Twin Tunnels: A Case Study of Suzhou Metro Line 7 Open
View article: Analysis of hydraulic breakdown and seepage of tail sealing system in shield tunnel machines
Analysis of hydraulic breakdown and seepage of tail sealing system in shield tunnel machines Open
The use of shield method in tunnel construction is limited by the engineering conditions of highwater pressure. This is mainly due to the uncertainty of the pressure-bearing capacity of the sealing chambers of the shield tail under differe…
View article: Physical and mechanical response of large-diameter shield tunnel lining structure under non-uniform fire: A full-scale fire test-based study
Physical and mechanical response of large-diameter shield tunnel lining structure under non-uniform fire: A full-scale fire test-based study Open
When a fire occurs in an underground shield tunnel, it can result in substantial property damage and cause permanent harm to the tunnel lining structure. This is especially true for large-diameter shield tunnels that have numerous segments…
View article: Model test on cutterhead-soil interaction during shield tunneling and its theoretical model
Model test on cutterhead-soil interaction during shield tunneling and its theoretical model Open
This study aims to develop a rational theoretical model for cutterhead-soil interaction. The cutterhead-soil interaction mechanism is divided into two components: the cutting action of the cutter on the soil and the extrusion of the cutter…
View article: Prediction of fracture initiation in cohesive soils based on data mining modelling and large-scale laboratory verification
Prediction of fracture initiation in cohesive soils based on data mining modelling and large-scale laboratory verification Open
Many empirical and analytical methods have been proposed to predict fracturing pressure in cohesive soils. Most of them take into account three to four specific influencing factors and rely on the assumption of a failure mode. In this stud…
View article: Scaling and Design of Slurry Fracturing on Shield Tunnel Face Using Centrifugal Modeling
Scaling and Design of Slurry Fracturing on Shield Tunnel Face Using Centrifugal Modeling Open
View article: Shield Attitude Adjustment Induced by Slurry Pressure Balance (SPB) Shield Tunneling Considering the Effects of Overbreak Cutter: A Numerical Simulation by DEM and Engineering Application
Shield Attitude Adjustment Induced by Slurry Pressure Balance (SPB) Shield Tunneling Considering the Effects of Overbreak Cutter: A Numerical Simulation by DEM and Engineering Application Open
Based on a cross-river tunnel of Wuhan Metro Line 8, we present a two-dimensional discrete element model for shield attitude adjustment considering the effect of overbreak cutters. The shield shell mechanics under the influence of over-exc…
View article: Centrifugal Model Test Study on the Mechanical Characteristics of Shield Tunnels Influenced by Different Types of Openings for Cross Passages
Centrifugal Model Test Study on the Mechanical Characteristics of Shield Tunnels Influenced by Different Types of Openings for Cross Passages Open
To investigate the mechanical characteristics of shield tunnels when openings are made for the construction of cross passages, a series of centrifugal model tests were conducted. The segmental features of the shield tunnel were simulated i…
View article: Centrifugal Modeling of the Relationship between Tunnel Face Support Pressure and Ground Deformation in Water-Rich Sandy Soil
Centrifugal Modeling of the Relationship between Tunnel Face Support Pressure and Ground Deformation in Water-Rich Sandy Soil Open
To investigate the ground deformation induced by the variation of excess/insufficient support pressure in water-rich sandy soil, a series of centrifuge tests in tunnels located at cover over diameter (C/D) ratios equal to 0.5, 1.0 and 1.5 …
View article: Prediction of Ground Surface Settlements Induced by EPB Shield Tunneling in Water-Rich Soft Strata
Prediction of Ground Surface Settlements Induced by EPB Shield Tunneling in Water-Rich Soft Strata Open
The main goal of this study is to enhance the prediction of ground surface settlements induced by Earth pressure balance (EPB) shield tunneling. In the setting of Changzhou, China, a comprehensive database of long-term ground-displacement …
View article: Effect of Cutting Blind Zones On the Performance Of the Rectangular Pipe Jacking Machine with Multiple Cutterheads: A DEM Study
Effect of Cutting Blind Zones On the Performance Of the Rectangular Pipe Jacking Machine with Multiple Cutterheads: A DEM Study Open
View article: A New Calculation Method of Cutterhead Torque Considering Shield Rolling Angle
A New Calculation Method of Cutterhead Torque Considering Shield Rolling Angle Open
The existing cutterhead torque calculation method usually simplifies the characteristics of the shield, which ignores the rolling angle. In this paper, the cross-river shield project of Wuhan Metro Line 8 is taken as the research focus. Fi…
View article: Experimental Study on Electrical Resistivity Characteristics of Saturated Sand Mixes with Bentonite Slurry
Experimental Study on Electrical Resistivity Characteristics of Saturated Sand Mixes with Bentonite Slurry Open
Bentonite slurry is widely used in underground and geotechnical engineering because of its strong ability of wall protection. Slurry penetration, which is of great significance for the soil stability, is difficult to observe directly durin…
View article: Fluidization Behavior of Soft Soil Induced by Shield Construction
Fluidization Behavior of Soft Soil Induced by Shield Construction Open
Shield construction will cause the fluidization of soft soil which is characterized by flow plasticity. This paper presents two theoretical models of soil flow behavior based on a fluid mechanics framework to understand the behavior of sof…
View article: Optimal Control of Slurry Pressure during Shield Tunnelling Based on Random Forest and Particle Swarm Optimization
Optimal Control of Slurry Pressure during Shield Tunnelling Based on Random Forest and Particle Swarm Optimization Open
The control of slurry pressure aiming to be consistent with the external water and earth pressure during shield tunnelling has great significance for face stability, especially in urban areas or underwater where the surrounding environment…
View article: Probabilistic analysis of tunnel excavation with spatially correlated Young’s modulus
Probabilistic analysis of tunnel excavation with spatially correlated Young’s modulus Open
Understanding the responses of tunnel excavation is essential in urbanization. Tunnel constructions are subject to uncertainties originated from complex geological conditions, including the spatial variability of soil properties. Therefore…
View article: Spatial Variability of Grouting Layer of Shield Tunnel and Its Effect on Ground Settlement
Spatial Variability of Grouting Layer of Shield Tunnel and Its Effect on Ground Settlement Open
This study aims to investigate the effect of the spatial variability of grouting-layer thickness on ground-surface settlement caused by shield tunneling and to provide a rational prediction method. The spatial characteristics of grouting l…
View article: Theoretical analysis and experiment of pressure distribution and pressure gradient of shield screw conveyor: Taking sandy soil as an example
Theoretical analysis and experiment of pressure distribution and pressure gradient of shield screw conveyor: Taking sandy soil as an example Open
The pressure distribution and pressure gradient characteristics of shield screw conveyor directly affect its normal function. Taking the conditioned soil microelements in the spiral tube as the research object, the pressure field distribut…
View article: Influence of Shield Attitude Change on Shield–Soil Interaction
Influence of Shield Attitude Change on Shield–Soil Interaction Open
The mechanism of shield–soil interaction and multi-phase equilibrium control theory in shield tunneling process still lack sufficient understanding. Aiming at this problem, with the improved calculation method of loose earth pressure, the …