A screw micropile is a multi-sectional pile typically consisting of a smooth segment at the top, a threaded segment in the middle and a tapered segment at the bottom. Although the axial behavior of this pile type has lately been studied, response …
The present research assesses possible effect(s) of relative in situ compaction energy and grain size gradation on compaction parameters of remoulded geological materials. Ten (10) points, in North-eastern Nigeria, were each drilled to 60 m to …
Chromium contamination of soils is a worldwide issue because of the risks related to such a heavy metal as it presents elevated carcinogenic, mutagenic, and teratogenic characteristics. This highlights the importance of developing feasible …
verfasst von:
Anelise Bueno Selbach Barreto, Hugo Carlos Scheuermann Filho, Karla Salvagni Heineck, Nilo Cesar Consoli
The present study aims to investigate the excavation method, excavation sequence, and optimum trailing distance between excavation stages of the tunnel face to control ground settlement caused by constructing the Tehran Subway Tunnel-Line 6 in the …
verfasst von:
Meysam Aghajari, Ali Naghi Dehghan, Seyed Hamid Lajevardi
Design of open pit slopes is a decision-making process which aims to maximize ore recovery while minimizing the stripping ratio. Slope design will typically meet a Design Acceptance Criteria (DAC), and the current practice of designing open pit …
Aiming at the large deformation of surrounding rock during tunnel construction under high ground stresses, this paper takes a high ground stress soft rock tunnel project in Yunnan Province as the background. According to the uniaxial and triaxial …
verfasst von:
Jiabing Zhang, Xu Xiang, Ronghuan Du, Xiaohu Zhang
Nepal, identified as one of the world's most disaster-prone areas, has a history of frequent earthquakes. Despite its seismic activity and vulnerability to liquefaction, the Terai region lacks comprehensive studies on site characterization and …
Reliability-based design is increasingly being applied to geotechnical problems because it allows the robust consideration of various sources of uncertainty, such as the inherent variability of soil properties. Some soil properties, however, are …
verfasst von:
Monica Susanne Löfman, Leena Katariina Korkiala-Tanttu
The frequency and severity of worldwide landslides are increasing due to climate change and the human factor. That is why losses and damages to humans and materials are growing. These phenomena do not affect all regions similarly, especially the …
verfasst von:
Adrián G. Bruzón, Patricia Arrogante-Funes, Ariadna Álvarez-Ripado, Dina Osuna, Carlos J. Novillo, Fátima Arrogante-Funes
The understanding of the amplification of seismic waves due to local soil deposits is critical to assessing the ground-level seismic hazards in any region. In the present study, 1D non-linear seismic ground response analysis is carried out for …
In the last two decades, bottom ash has been widely used as an alternative to conventional granular fill in various construction activities, either by replacing the whole or a portion of the fill material. This study investigates the dynamic …
Explicitly modelling tailings consolidation behaviour contributes to improve integrated management approaches and accurately estimate the storage capacity of tailings storage facilities (TSFs) to better predict their static and dynamic stability.
The high-speed rail networks are engineered to enable rapid and effective transit. They are expected to be fully functional even during adverse operational conditions such as heavy rain, fluctuating water level, and the dynamic nature of external …
Secant pile walls (SPWs) are frequently employed as temporary excavation support systems in urban areas; thus, they are useless once permanent foundations and basements have been constructed. Recently, attempts have been made to employ these walls …
verfasst von:
Ali M. Basha, Mohamed H. Zakaria, Maher T. El-Nimr, Mohamed M. Abo-Raya
Geological carbon sequestration in jointed reservoirs will require the use of fracture network for the flow of CO2 plumes. However, acidic solution formed at the interface between brine and CO2 can cause chemical erosion of the local rock mass …
This paper presents and discusses the outcomes of an experimental study aimed at investigating changes in pore water pressure (PWP) in cemented paste backfill (CPB) materials incorporating polycarboxylate ether-based superplasticizer (PES). The …
In order to improve the performance of high-pressure abrasive water jet cutting extremely hard rock, research on the cutting effect and mechanism of abrasive water jet was carried out. The research focused on cutting depth, and one-factor tests …
verfasst von:
Chuan Wang, Jiancheng Zhang, Chuanyi Ma, Liuqi Gu, Bo Zhang, Biao Li
Piles supporting large structures are often subjected to cyclic lateral loads due to natural phenomena, including earthquakes, winds, and waves. Such loads are main causes of progressive deterioration in the stiffness and reduce the lateral …
verfasst von:
Roozbeh Owji, Ghassem Habibagahi, Mehdi Veiskarami
Two moderate earthquakes struck the South-Central part of Java Island (in Indonesia’s archipelago) with Mw 5.7 and Mw 5.9 on June 06 and June 30, 2023, respectively. Both earthquakes were followed by ~100 aftershocks with widespread and strong …
verfasst von:
Suko P. Adi, Andrean V. H. Simanjuntak, Pepen Supendi, Shengji Wei, Umar Muksin, D. Daryono, Bagus A. Wibowo, Dwikorita Karnawati, Marzuki Sinambela