Results 81 to 90 of about 950 (216)

The performance of diaphragm type cellular cofferdams

open access: yes, 2009
The construction of water management and navigation structures often requires temporary works to exclude water to facilitate construction in the dry or at least under a lower water level within the construction area.
Iqbal, Qaiser
core  

Cyclic Shear Responses of Saw-Tooth Artificial Rock Joints Under Constant Normal Load Conditions: Laboratory Investigation and Numerical Simulation

open access: yesGeosciences
Understanding the movement behavior of upper blocks along rock joints or weak planes is crucial for the geological hazard forecast and prediction. This paper presents experimental and numerical investigations of a saw-tooth joint under shear and normal ...
Zongheng Tao   +3 more
doaj   +1 more source

Change mechanism simulation study of the overlying strata temperature field and fracture field in UCG

open access: yes矿业科学学报, 2017
The thermodynamic parameters of surrounding rock of the coal seam in a certain gasification field in Inner Mongolia are measured, and the relationships of the heat capacity and thermal conductivity of the surrounding rock of the coal seam and the ...
Zhao Mingdong, Dong Donglin, Tian Kang
doaj  

Research on the Failure Mechanism of Surrounding Rock in a Dynamic Pressure Roadway and Active and Passive Coordinated Support Technology

open access: yesApplied Sciences
To study the phenomenon of large deformation and the failure of roadways under dynamic pressure, this paper takes the 10607 gas drainage roadway as the research object and presents the results of a theoretical derivation of equations for the boundary of ...
Renliang Shan   +6 more
doaj   +1 more source

Spatiotemporal Stability Responses of Tunnel Excavation Under Cyclical Footage Impact: A FLAC3D-Based Numerical Study

open access: yesApplied Sciences
Cyclical footage, a fundamental parameter in tunnel construction, has received limited attention despite its critical role in ensuring excavation stability and safety.
Shang Li, Bing Dai, Yuzhou Hou, Danli Li
doaj   +1 more source

Research on surrounding rock control technology of external-misaligned stagger arrangement of roadway in ultra-thick seam

open access: yes矿业科学学报, 2018
In view of the problem of the reserved width of coal pillar in the full-mechanized caving mining and the surrounding rock control technology of continuous working face in ultra-thick coal seam, the coal mining method of external-misaligned stagger ...
Wang Zhiqiang   +5 more
doaj   +1 more source

Numerical determination of soil deformations around a penetrating object in 2D and 3D models

open access: yes, 2006
Various numerical methods have been employed to determine soil deformations around penetrating objects. However, due to the extensive computational resource requirements for 3D analysis, soil deformations are usually estimated from 2D analysis.
Farhangi, S.   +2 more
core  

Preliminary design of cross passage by 3D numerical simulation

open access: yes, 2013
Design and construction of the cross passages is a challenging issue in tunnelling design and one of the major components of the overall construction cost and construction delay.
Pescara, M.   +3 more
core   +1 more source

Simplified Reliability Analysis Method of Pile-Wall Combined Supporting Embankment Considering Spatial Variability of Filling Parameters

open access: yesBuildings
To address the stability of high embankment slopes and investigate the influence of spatial variability of gravel soil on slope stability, this study proposes a simplified reliability analysis method of slope stability. Based on FLAC3D, a numerical model
Hui Liu   +4 more
doaj   +1 more source

Successful Construction of a Complex 3D Excavation Using 2D and 3D Modelling

open access: yes, 2015
Austar Coal Mine (Austar) successfully constructed an underground coal storage bin at a deep mine in challenging conditions. SCT Operations (SCT) was involved in various geotechnical assessments related to the bin excavation including vertical separation
Yvette Heritage (20179536)   +2 more
core  

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