Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Shengdong Liu"'
Publikováno v:
Alexandria Engineering Journal, Vol 97, Iss , Pp 333-345 (2024)
In the urban environment, the transient electromagnetic method often suffers from severe electromagnetic interference because it employs coils to perceive the electromagnetic field. To address this issue, the DC method employs electrodes to shield th
Externí odkaz:
https://doaj.org/article/008d4eb9c4b74cb2b273f802d6c7400f
Autor:
Benyu Su, Haiping Yang, Grzegorz Królczyk, Quanwei Yang, Shengdong Liu, Patrick Siarry, Z. Li
Publikováno v:
Alexandria Engineering Journal, Vol 96, Iss , Pp 279-294 (2024)
This work aims to remotely monitor the grouting process of double-layered wellbores in deep coal mining area by proposing a new geophysical electrical potential inversion imaging method. The proposed geophysical method is able to evaluate the groutin
Externí odkaz:
https://doaj.org/article/8d962dce4b034b7babf8539f631d42f7
Publikováno v:
Meitan xuebao, Vol 49, Iss 3, Pp 1530-1538 (2024)
The seismic signals collected underground in coal mines often exhibit complex waveforms accompanied by significant noise interference, leading to a reduction in the accuracy of first arrival time picking of seismic signals and thereby impacting the i
Externí odkaz:
https://doaj.org/article/1ae0f247039449f5b0373d613e8479ae
Publikováno v:
Meitan xuebao, Vol 49, Iss 1, Pp 586-600 (2024)
With the increase of the depth, mining intensity and area of coal resource, the mining disturbances in the mining face can easily induce mine water inrush accidents, seriously threatening the safe mining of coal resources in China. Mine water disaste
Externí odkaz:
https://doaj.org/article/da8afe73b5fe49e0944862070d5601c1
Publikováno v:
Insects, Vol 15, Iss 9, p 688 (2024)
The environment of mountain ecosystems can change greatly in short distances as elevation increases. The effects of elevation change on the distribution and body size of carabid beetles were investigated at elevations of 750–2600 m in the Changbais
Externí odkaz:
https://doaj.org/article/85931138a81548e4a992d8e4ffc338d8
Detection of geological anomalies in coal mining working faces using a scattered-wave imaging method
Publikováno v:
Journal of Petroleum Exploration and Production Technology, Vol 13, Iss 5, Pp 1299-1313 (2023)
Abstract A concealed geological structure encountered during the excavation of a coal working face could connect the working face to high-pressure water in limestone strata, which can result in a serious or catastrophic water inrush accident. However
Externí odkaz:
https://doaj.org/article/d0e535de9b8c40ea99ccc83d12d700f4
Publikováno v:
IEEE Access, Vol 10, Pp 84799-84808 (2022)
With the increase in coal mining depth, water hazards in deep, strong karst aquifers have seriously threatened the safety of coal mine production. Dynamic monitoring of floor damage during coal seam mining under complex conditions is of great signifi
Externí odkaz:
https://doaj.org/article/e7a6cd48beb1477ba7d22d4a5e29a77e
Publikováno v:
Frontiers in Earth Science, Vol 10 (2023)
An unsuspected fault in front of a roadway is a key hidden disaster-causing factor that can result in major accidents in coal mines; therefore, the accurate advanced detection of faults is important for the safe coal mining. However, existing seismic
Externí odkaz:
https://doaj.org/article/07182e0ef093406f9c81a3417984193f
Autor:
Zhaoqiao Zhang, Shengdong Liu
Publikováno v:
IEEE Access, Vol 9, Pp 82462-82470 (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
Externí odkaz:
https://doaj.org/article/eb7c42b117a5401dabd33595cf8405bb
Publikováno v:
Journal of King Saud University: Science, Vol 32, Iss 2, Pp 1731-1737 (2020)
Underground seismic exploration is a technical assurance for the geological transparency of the mining face. However, seismic exploration with explosive seismic source has shortcomings such as acquisition difficulties and serious safety hazards. Besi
Externí odkaz:
https://doaj.org/article/e9a6847b741c4b3b929359efcc13dd7d