Results 31 to 40 of about 7,010,769 (298)

Analysis on the Vertical Additional Force of Shaft and Drainage Settlement Characteristics of Topsoil Containing Multiaquifers

open access: yesGeofluids, 2022
The vertical additional force induced by the drainage consolidation settlement of the topsoil is one of the main factors for shaft wall fracture. To date, the number of aquifers of topsoil rises with the depth increasing of shaft, which would lead to a ...
Tao Han   +6 more
doaj   +1 more source

Recent development and prospects of energy-absorbing bolt in underground engineering

open access: yes矿业科学学报, 2021
There are many challenges in the process of underground engineering construction, such as high stress, extremely soft rock, strong mining and other complex conditions. The surrounding rock is difficult to control and its deformation is serious due to the
Jiang Bei   +8 more
doaj   +1 more source

Multiscale Research on Pore Structure Characteristics and Permeability Prediction of Sandstone

open access: yesGeofluids, 2021
The random existence of many irregular pore structures in geotechnical materials has a decisive influence on its permeability and other macroscopic properties.
M. A. Shi-Jia   +5 more
doaj   +1 more source

Study on Rockburst Tendency of Deep Underground Engineering based on Multi-Factor Influence

open access: yesElectronic Journal of Structural Engineering, 2023
Rockburst disaster seriously threatens the construction schedule of underground tunnel engineering and the safety of construction workers. Rockburst prediction has become one of the critical methods for evaluation of surrounding rock stability and safe construction of deep underground engineering.
Zihui Zhu, Feiyue Sun, Jiaqi Guo
openaire   +2 more sources

Influence of section depth on the structural behaviour of reinforced concrete continuous deep beams [PDF]

open access: yes, 2007
YesAlthough the depth of reinforced concrete deep beams is much higher than that of slender beams, extensive existing tests on deep beams have focused on simply supported beams with a scaled depth below 600 mm.
Yang, Keun-Hyeok, Ashour, Ashraf
core   +1 more source

Modeling the Spatial and Temporal Evolution of Stress during Multiworking Face Mining in Close Distance Coal Seams

open access: yesAdvances in Civil Engineering, 2021
Mining in close distance coal seams (CDCSs) is frequently associated with engineering disasters because of the complicated nature of stress distribution within CDCSs.
Yong Zhang   +6 more
doaj   +1 more source

Results of monitoring at the British library excavation [PDF]

open access: yes, 2014
The main phase of excavation for the basements of the British Library at St Pancras, London, was completed in 1987. The project included basements extending up to 25 m deep, through the London Clay and into the Lambeth Group.
Vardanega, Paul J., Simpson, Brian
core   +1 more source

Failure mechanisms of soft rock roadways in steeply inclined layered rock formations

open access: yesGeomatics, Natural Hazards & Risk, 2018
In recent years, with the increasing depth of coal mining around the world, traditional shallow geology mechanics are no longer suitable for the research on deep geological problems. In terms of deep mining, soft rock roadways in inclined rock formations
Zhigang Tao   +6 more
doaj   +1 more source

Research on the Creep and Fatigue Evaluation Method of the Double-Layered Annulus Metal Hydride Bed Combined with Numerical Modeling and ASME Code

open access: yesAdvances in Materials Science and Engineering, 2022
Applied to a hydrogen absorption-desorption cycle, the hydrogen storage bed will experience higher exchange temperatures and variety of mechanical load.
Ping Zhao   +3 more
doaj   +1 more source

Study on 3D modeling method and reinforcement scheme of large and complex open-pit mine

open access: yes矿业科学学报, 2021
Large-scale topping deformation occurred in the southwest stope of Changshanhao Open-pit Gold Mine in Inner Mongolia.Through systematic investigation of the engineering geological conditions and rock mass structure types, the deformation characteristics ...
Tao Zhigang   +4 more
doaj   +1 more source

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