Results 81 to 90 of about 280,084 (300)

Comparison between electrical resistivity tomography and tunnel seismic prediction 303 methods for detecting the water zone ahead of the tunnel face: A case study

Open Geosciences, 2020
In deep tunnels with hydro-geological conditions, it is paramount to investigate the geological structure of the region before excavating a tunnel; otherwise, unanticipated accidents may cause serious damage and delay the project.
Dastanboo Nima, Li Xiao-Qing, Gharibdoost Hamed   +2 more
doaj   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Characterization of Mineral Meposits Using the Magnetic Method: The Case of the Aïn Beida Mine in Bouarfa, Morocco

Civil and Environmental Engineering
Geophysical methodologies represent a paramount approach for assessing the mining potential of a given area. Among these methodologies, the magnetic method stands out as indispensable for the exploration of metalliferous deposits. This method facilitates
Bahi Anas, Zerradi Youssef, Bziaz Mohammed, Tlidi Younes, Soufi Amine, Bennouna Rhita, Chakiri Said   +6 more
doaj   +1 more source

Interactive, Shallow Machine Learning-Based Semantic Segmentation of 2D and 3D Geophysical Data from Archaeological Sites

Remote Sensing
In recent decades, technological developments in archaeological geophysics have led to growing data volumes, so that an important bottleneck is now at the stage of data interpretation.
Lieven Verdonck, Michel Dabas, Marc Bui
doaj   +1 more source

Integrated approach for sinkhole evaluation and evolution prediction in the Central Ebro Basin (NE Spain)

International Journal of Speleology, 2017
Evaluation of karst hazards benefits from the integration of different techniques, methodologies and approaches. Each one presents a different signature and is sensitive to certain indicators related to karst hazards.
Oscar Pueyo Anchuela, Andrés Pocoví Juan, Antonio M. Casas Sainz, Javier Gracia Abadias, Carlos L. Liesa Carrera   +4 more
doaj   +1 more source

Study on the failure mechanism of the shield excavation face in the sandy cobble stratum under different buried depths

Deep Underground Science and Engineering, EarlyView.
Abstract One of the significant challenges faced in shield tunnel construction is the risk of collapse resulting from abrupt changes in soil conditions in advance of the working face, particularly within the sandy cobble stratum. This study aims to effectively manage these sudden variations and to further investigate the failure mechanisms associated ...
Hua Jiang, Chongyang Liu, Ao Zhang, Xiaoyan Zhang, Yuhang Li   +4 more
wiley   +1 more source

Remote sensing geophysics from Skylab [PDF]

There are no author-identified significant results in this ...
Watson, K.
core   +4 more sources

Effect of confining pressure on fracture characteristics and mineralogical behavior of tight sandstone specimens after hydraulic fracturing

Deep Underground Science and Engineering, EarlyView.
Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley   +1 more source

Legacy GIS data integration and non-invasive survey for the study of the archaeological landscape of Atella (Caserta, Campania, Italy)

Groma
This paper presents results from a GIS-based approach applied in the archaeological study of Atella (Campania, Italy). The project integrates both new and legacy data using GIS technology, including a geophysical survey conducted at Sant’Arpino in 2006,
Rodolfo Brancato, Stephen Kay
doaj   +1 more source

Fusion of Satellite Multispectral Images Based on Ground-Penetrating Radar (GPR) Data for the Investigation of Buried Concealed Archaeological Remains

Geosciences, 2017
The paper investigates the superficial layers of an archaeological landscape based on the integration of various remote sensing techniques. It is well known in the literature that shallow depths may be rich in archeological remains, which generate ...
Athos Agapiou, Vasiliki Lysandrou, Apostolos Sarris, Nikos Papadopoulos, Diofantos G. Hadjimitsis   +4 more
doaj   +1 more source