Results 81 to 90 of about 17,530 (271)

Numerical modelling of ground-tunnel support interaction using bedded-beam-spring model with fuzzy parameters [PDF]

, 2011
The study of the ground-tunnel interaction by introducing a predetermined degree of variation (fuzziness) in some parameters of the chosen model is presented and discussed.
Barbero, Monica, Barpi, Fabrizio, Peila, Daniele   +2 more
core  

Research on the Evolution Law of the Plastic Zone and Control Technologies for Surrounding Rock in Floor Roadway Influenced by Mining Activities

Energy Science &Engineering, Volume 14, Issue 1, Page 444-459, January 2026.
ABSTRACT This study addresses the challenges of deformation failure and the difficulty in controlling the surrounding rock in the 2453 floor roadway of a coal mine in Hunan Province, influenced by mining activities. Conducting an in‐depth investigation into the evolution law of the principal stress and stability control technologies for the surrounding
Shihai Shu, Weijun Wang, Yujie Ma, Chao Yuan, Xinyu Tian, Rongjie Du, Sha Ge   +6 more
wiley   +1 more source

Shotcreting in Tunnels

International Journal Of Engineering And Computer Science, 2016
Since the development of New Austrian Tunneling Method (NATM), shotcrete in tunnels has been widely applied. It’s most important features are durability, speed of application and cost effectiveness. The New Austrian Tunnelling Method (NATM) is characterized by the continuous adaption of driving parameters, such as unsupported length (i.e., the distance
openaire   +1 more source

Preparing Shotcrete Materials Applied to Roadways Using Gangue Solid Wastes: Influences of Mix Proportions of Materials on the Mechanical Properties

Applied Sciences
Coal gangue is a waste product commonly produced during coal mining. Using gangue as a replacement for conventional aggregates in shotcrete applied to underground roadways is a feasible approach to promote the resource utilization of gangue solid waste ...
Meng Li, Shihao Xing, Yang Zhao, Xiaobao Luo, Linlin Xie, Chunhui Xie   +5 more
semanticscholar   +1 more source

Influence of Manufactured Sand Gradation and Chloride‐Free Alkali‐Free Accelerator (CFAFA) on the Performance of Shotcrete

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Aiming at the deficiencies in the design of the proportion of the mechanism sand shotcrete, this study systematically investigated the influence of mechanism sand gradation and stone powder content on the working performance, mechanical properties, and durability of shotcrete, combined with microanalysis, revealing the synergistic mechanism of chlorine‐
Yongwei Wang, Bo Yan, Wenmin He, Xia Bian   +3 more
wiley   +1 more source

Analysis of shotcrete lining of underground tunnels [PDF]

, 2011
Shotcrete is a process where concrete is projected or "shot" under pressure, using a feeder or a "gun" onto a surface to form structural shapes including walls, floors, and roofs.
Ghiasi, Vahed, Omar, Husaini
core  

Negotiation of poor ground in an undersea tunnel [PDF]

, 2016
The 2.65 km Gwithian outfall tunnel formed part of the tunnelling operations under the 'Clean Sweep' sewage/sewerage distribution system upgrade within the South West Region during the 1990's.
Coggan, JS, Yelland, RS
core   +1 more source

Multifield Coupling Mechanisms and Support Strategy for Creep–Seepage Interaction in Water‐Bearing Argillaceous Soft Rock Tunnels

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Water‐bearing argillaceous soft rock, characterized by high porosity, low bearing capacity, and water sensitivity, is prone to instability under creep–seepage coupling effects in tunnel engineering, threatening construction safety. This study investigates the soft rock of a water conveyance tunnel in Henan Province, China.
Xuejiu Wang, Haodong Hu, Yuancheng Pei, Jian (James) Ji   +3 more
wiley   +1 more source

Pore structure characteristics of admixture shotcrete and its quantitative relationship with mechanical properties in high geothermal environment

Journal of Materials Research and Technology
The high geothermal environment during tunnel construction leads to the abnormal porosity and decreased mechanical properties of shotcrete, but its degradation mechanism is still unclear.
Wei Wang, Shaohui Zhang, Yan Wang, Jian Yuan, Ditao Niu   +4 more
doaj   +1 more source

Investigations into the mechanisms of rock support provided by sprayed liners [PDF]

, 2010
An investigation into the mechanisms of rock support provided by sprayed liners was carried out practically at three different mines, namely, South Deep Mine (Gold Fields), Mponeng Mine (Anglo Gold Ashanti) and Impala Platinum Mine (IMPLATS).
Dube, James
core