Results 1 to 10 of about 2,690,905 (191)

Analysis of Mechanical Excavation Characteristics by Pre-Cutting Machine Based on Linear Cutting Tests

Applied Sciences, 2023
Mechanical methods of tunnel excavation are widely used because of their high excavation output, and the selection of appropriate technology depends on ground composition and project-related features.
Han-eol Kim, Sang-gui Ha, Hafeezur Rehman, Han-kyu Yoo   +3 more
doaj   +2 more sources

Mechanical excavation of wetland habitat failed to eradicate invasive American red swamp crayfish (Procambarus clarkii) in Malta

Ecological Solutions and Evidence
Invasive crayfish are an important ecological concern in many freshwater ecosystems. Many efforts have been made to eradicate them, but there is very little documentation of the effectiveness of these efforts. Between 2019 and 2020, a restoration project
Alex Caruana, Benjamin Camilleri, Luke Farrugia, Julia P. G. Jones   +3 more
doaj   +2 more sources

Energy Consumption and Fume Analysis: A Comparative Analysis of the Blasting Technique and Mechanical Excavation in a Polish Gypsum Open-Pit Mine

Energies
This article presents a comparative assessment of energy consumption and fume emissions such as NOx, CO2, and CO associated with the excavation of a specified gypsum volume using two mining methods (blasting and mechanical extraction).
Andrzej Biessikirski, Przemysław Bodziony, Michał Dworzak   +2 more
doaj   +2 more sources

Mechanical response of elevated bridge piles to adjacent deep excavation

Scientific Reports
In urban concentrated area, the disturbance caused by construction affects significantly the sustainability of adjacent existing structures. It is essential to capture the mechanical response of existing structures to adjacent deep excavation.
Ping Zhao, Youqiang Qiu, Zhanqi Wang, Panpan Guo   +3 more
doaj   +2 more sources

Single Pick Cutting Rock Load Identification Based on Improved Regularization Method

Shock and Vibration, 2021
To explore the relationship between the cutting vibration and the cutting load of a single pick, this paper studied a new method for a single pick cutting rock load identification. This paper improved the low accuracy problem of the regularization method
Lei Dong, Siyu Zhai, Bukang Wang, Liang Dong, Junyuan Wang, Ruimin Shi   +5 more
doaj   +1 more source

Lateral Dynamic Response of Helical Pile in Viscoelastic Foundation Considering Shear Deformation

Applied Sciences, 2023
Helical piles are a new type of pile that has good application prospects, and researchers have carried out an in-depth investigation into their vertical uplift and compressive bearing capacity.
Xiaoyan Yang, Chaozhe Wang, Sheng Cao, Fengxi Wang, Wenbing Wu   +4 more
doaj   +1 more source

Reasonable mechanical model on shallow tunnel excavation to eliminate displacement singularity caused by unbalanced resultant [PDF]

Applied Mathematical Modelling, 2023
When considering initial stress field in geomaterial, nonzero resultant of shallow tunnel excavation exists, which produces logarithmic items in complex potentials, and would further lead to a unique displacement singularity at infinity to violate geo ...
Luobin Lin, Fuquan Chen, Xianhai Huang
semanticscholar   +1 more source

Research on Optimization Design of Tunnel Blasting Scheme Adjacent to Buildings

Applied Sciences, 2023
The section of Jialingjiang Road Station to Xiangjiang Road Station along Qingdao Metro Line 13 is located in Qingdao, China. All of them show obvious characteristics, being soft on the top and hard on the bottom, and the interval tunnel is faced with ...
Kuan Ren, Annan Jiang, Xinping Guo, Qinghua Min   +3 more
doaj   +1 more source

Vibration Analysis and Empirical Law Definition for Different Equipment in a Civil Construction

Applied Sciences, 2020
The potential affection of any construction, and especially historical sites, is of great concern for their long-term maintenance and stability. This study has determined the vibration behavior in poor-quality rock mass conditions generated by some of ...
Rafael Rodríguez, Marc Bascompta
doaj   +1 more source

Mechanical response and parametric analysis of a deep excavation structure overlying an existing subway station: A case study of the Beijing subway station expansion

Frontiers in Earth Science, 2023
The existing Beijing Pingguoyuan Subway Station was extended through a extension project. The excavation for the extension was located directly above the existing station.
Jianyong Han, Jun Wang, Cheng Cheng, Chaozhe Zhang, Erbin Liang, Zhikang Wang, Jae-Joon Song, J. Leem   +7 more
semanticscholar   +1 more source