Results 21 to 30 of about 5,856 (171)

Reconstruction and Measurement of Irregular Karst Caves Using BLST along the Shield Metro Line

Applied Sciences, 2020
This study investigated the application of the borehole laser scanning technology (BLST) method in the detection of both dry and water-filled karst caves.
Shangqu Sun, Liping Li, Jing Wang, Shuguang Song, Peng He, Zhongdong Fang   +5 more
doaj   +1 more source

Advances in research and future prospects of borehole geophysical prospecting technology for coal mines

Meitian dizhi yu kantan
Background Borehole geophysical prospecting technology for coal mines integrates the advantages of both drilling and geophysical prospecting. Accordingly, multiple critical advances have been achieved in its applications to the technologies and equipment
Ping LI, Rong WEI, Tao FAN, Rui ZHAO, Bici JIANG, Xiaochao TIAN, Bingchun WANG   +6 more
doaj   +1 more source

Frictional Stabilities on Induced Earthquake Fault Planes at Fox Creek, Alberta: A Pore Fluid Pressure Dilemma

, 2019
Earthquakes induced during hydraulic fracturing operations have occurred in a number of locales. However, in-situ studies aimed to discern the triggering mechanism remains exclusively statistical in their nature.
Schmitt, Douglas R., Schultz, Ryan, Shen, Luyi W.   +2 more
core   +1 more source

Application of long-distance tunneling and detection for advance detection in excavation using shield tunneling machines

Meitian dizhi yu kantan
Objective and MethodDuring the rapid excavation process using shield tunneling machines in coal mines, the advance detection of concealed geological anomalies encounters challenges of limited space and insufficient accuracy.
Chao CHEN, Ping LI, Wei LI, Rong WEI
doaj   +1 more source

The use of monopole and dipole sources in crosswell surveying [PDF]

, 2004
This paper implements a boundary element method (BEM) solution, formulated in the frequency domain, to simulate the crosswell S wave surveying technique. In this technique, one fluid-filled borehole hosts the source, and the other the receivers.
António, Julieta, Tadeu, António
core   +1 more source

Seismic Sequence Stratigraphy Applied to Reservoir Recognition and Evolution on Marine Carbonatic Ramp—Macaé Group (Albian to Cenomanian) of Campos Basin

Geological Journal, EarlyView.
A classic oil producing interval of the Campos Basin—Macaé Group is revisited through seismic stratigraphic analysis, providing a stratigraphic framework, characteristic depositional and relative time positioning for several complex structural settings.
Renata Alvarenga, Juliano Kuchle, Francyne Amarante, Garibaldi Armelenti, Claiton Marlon dos Santos Scherer, Luiz Fernando De Ros, Bruno de Souza Silva, Igor Marzano, Márcia Karam, Candy Shirley Rosa Contreras, João Claudio Conceição, José Luis Drummond Alves, Luiz Landau   +12 more
wiley   +1 more source

Geophysical research and progress in exploration [PDF]

, 1960
This is the fourth in a series of review papers dealing with technological developments in exploration and with geophysical research at universities and industrial laboratories.
Press, Frank, White, J. E.
core   +1 more source

Application of comprehensive geophysics in uranium exploration in the Hetaoba area of Duolun County, Inner Mongolia

地质科技通报
Objective The Hetaoba area in Inner Mongolia has superior uranium metallogenic conditions.Grea tore-prospecting results have been achieved in the eastern part of the study area.However, breakthrough has not been made in the western area.
Yingbin LI, Wei ZHANG, Chongtao QIU
doaj   +1 more source

Implications of heterogeneous embankment conditions for geoelectrical investigations on dams: A case study at Mactaquac Dam, Canada

Near Surface Geophysics, EarlyView.
Abstract Electrical resistivity tomography (ERT) has been shown to be effective for surveying and monitoring dams, due to the method's sensitivity to moisture content and relevant physical properties (e.g., porosity). Automated ERT systems, capable of time‐lapse monitoring, can be used to detect variations in ground conditions.
John S. Ball, Karl E. Butler, Jonathan E. Chambers, Paul B. Wilkinson, Andrew Binley   +4 more
wiley   +1 more source

Electrical resistivity survey in soil science: a review . [PDF]

, 2005
Electrical resistivity of the soil can be considered as a proxy for the spatial and temporal variability of many other soil physical properties (i.e. structure, water content, or fluid composition).
Bruand, Ary, Cousin, Isabelle, Richard, Guy, Samouëlian, Anatja, Tabbagh, Alain   +4 more
core   +3 more sources