Results 11 to 20 of about 185 (129)

Multi-Step Combined Control Technology for Karst and Fissure Water Inrush Disaster During Shield Tunneling in Spring Areas

Frontiers in Earth Science, 2021
Shield tunneling in highly fractured karst water-rich conditions easily results in water inrush disaster or even causes the roof of the karst caves to collapse.
Xing Huang, Linfeng Li, Chaofan Zhang, Bin Liu, Kejin Li, Hongbing Shi, Boyu Jing   +6 more
doaj   +1 more source

Application of Comprehensive Geophysical Prospecting Method in the Exploration of Coal Mined-Out Areas

Advances in Civil Engineering, 2019
Due to the influence of mining technology, some coal mines will leave mined-out areas (or goafs) in the rock mass after mining. If the distribution law and influence scope of mined-out areas cannot be accurately explored and controlled, it will bring ...
Xiao Luo, Shuang Gong, Zhonggang Huo, Hongyan Li, Xinpin Ding   +4 more
doaj   +1 more source

Auxiliary Sensor-Based Borehole Transient Electromagnetic System for the Nondestructive Inspection of Multipipe Strings

Sensors, 2017
Transient electromagnetic (TEM) techniques are widely used in the field of geophysical prospecting. In borehole detection, the nondestructive inspection (NDI) of a metal pipe can be performed efficiently using the properties of eddy currents.
Bo Dang, Ling Yang, Na Du, Changzan Liu, Ruirong Dang, Bin Wang, Yan Xie   +6 more
doaj   +1 more source

Study on karst leakage caused by the combination of fault structure and interlayer corrosion zone of a hydropower station in southwest China

Carsologica Sinica, 2022
A hydropower station in southwest China is located in the middle part of the fold belt between the eastern Yunnan platform and the western Guizhou platform on the Yangzi platform.
Zhigang FENG, Guojian WEI, Hanmeng ZHANG, Guo XU   +3 more
doaj   +1 more source

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

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

Identification of prospective areas at the Northern Katpar deposit based on borehole geophysical surveys and spatial modeling

Mining of Mineral Deposits
Purpose. To identify prospective areas within the Northern Katpar deposit based on the interpretation of borehole geophysical survey results and the analysis of spatial geological models. Methods. The set of borehole geophysical methods included gamma-ray logging (GR), inclinometry (IN), X-ray radiometric logging (XRL), thermometry, caliper ...
Lyudmila Issayeva, Bakytzhan Amralinova, Erlan Akbarov, Zuhra Ablessenova, Dina Tolybayeva, Yerkezhan Yerkimbek   +5 more
openaire   +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

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