Results 21 to 30 of about 20,448 (261)

Research on the development height of water-conducting fracture zone in overburden rock based on transient electromagnetic method in hole

open access: yesMeikuang Anquan
Transient electromagnetic method has shown great effectiveness in detecting water channels. However, conventional methods for detecting the development of water-conducting fracture zones are not suitable due to environmental influences.
Qinghua LIANG   +5 more
doaj   +1 more source

Research on water body detection and water inrush risk of isolated full-mechanized working face

open access: yesMeikuang Anquan, 2022
This paper takes Jimei 23101 isolated working face as an example, uses mechanical model analysis, multiple empirical formula calculations and numerical simulation methods to analyze the development and penetration of overlying rock fissures before and ...
NAN Hua   +3 more
doaj   +1 more source

Research on borehole transient electromagnetic positioning method of azimuthal coil scanning detection

open access: yesMeitan xuebao
The borehole transient electromagnetic method is used to detect the long-range water-bearing bodies around the borehole wall by using the advanced water exploration borehole in the heading roadway, which avoids the “one’s opinion in one hole” because the
Jiulong CHENG   +3 more
doaj   +1 more source

Technology of Long-Distance Draining Goaf Water Under the Condition of Repeated Mining

open access: yesMeikuang Anquan, 2020
Based on the example of goaf water drainage in the main transportation roadway of Hanzui Coal Mine, the formation of goaf water in the main transportation roadway is deeply analyzed. The conventional borehole B5 with the largest water inflow is selected
LI Xiaolong, MU Pengfei
doaj   +1 more source

Optimizing Task Orchestration for Distributed Real-Time Electromagnetic Transient Simulation

open access: yesIEEE Access
Transient simulation in power engineering is crucial as it models the dynamic behavior of power systems during sudden events like faults or short circuits. Electromagnetic transient simulations involve multiple coordinated tasks.
Qi Guo   +8 more
doaj   +1 more source

Application of transient electromagnetism and cross-hole CT imaging to detect karst distribution and morphological characteristics﹕A case study of Jinan,Shandong Province

open access: yesCarsologica Sinica, 2022
The study area is located in the southern mountainous area of Jinan City, which is an exposed-covered karst mountainous area with low hilly landform surrounded by mountains on the east, west and south sides.
Fangyuan DAI   +5 more
doaj   +1 more source

Transient electromagnetic sounding for groundwater

open access: yesGeophysics, 1986
Abstract The feasibility of using the transient electromagnetic sounding (TS or TDEM) method for groundwater exploration can be studied by means of numerical models. As examples of its applicability to groundwater exploration, we study four groundwater exploration problems: (1) mapping of alluvial fill and gravel zones over bedrock ...
Fitterman, David V., Stewart, Mark T.
openaire   +4 more sources

Two-Dimensional Whole Space Transient Electromagnetic Forward Response of Magnetic Moment in Arbitrary Direction

open access: yesIEEE Access, 2021
In the two-dimensional Cartesian coordinate system, a transient electromagnetic forward algorithm of the magnetic moment in arbitrary direction is developed to simulate the electromagnetic response characteristics of the whole space geoelectric model ...
Zhaoqiao Zhang, Shengdong Liu
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

open access: yesAdvanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee   +7 more
wiley   +1 more source

Large-Scale Power Grid ADPSS Electromagnetic Transient Modeling Method and Software Implementation Based on PSD-BPA Data

open access: yesZhongguo dianli
With the increasing scale of new energy, flexible DC, FACTS and other new power electronic equipment connecting to the power grid, the operational characteristics of the new large-scale power grid have undergone significant changes, and electromagnetic ...
Shuwen XU   +4 more
doaj   +1 more source

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