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Research on coal mine safety management based on digital twin

Heliyon, 2023
Coal mine safety management is the foundation and decisive factor of coal mining. The manual detection model is the main way for traditional coal mine safety management, which has problems such as inefficient identification of safety risks in coal mines,
Jiaqi Wang, Yanli Huang, Wenrui Zhai, Junmeng Li, Shenyang Ouyang, Huadong Gao, Yahui Liu, Guiyuan Wang   +7 more
doaj   +3 more sources

Spectral Simulation and Error Analysis of Dusty Leaves by Fusing the Hapke Two-Layer Medium Model and the Linear Spectral Mixing Model

Remote Sensing, 2023
The Hapke two-layer medium model is an efficient way of simulating the spectra of dusty leaves. However, the simulation accuracy is low when the amount of dustfall is small.
Baodong Ma, Xiangru Yang, Defu Che, Yang Shu, Quan Liu, Min Su   +5 more
doaj   +1 more source

Construction Method for a Three-Dimensional Tunnel General Monomer Model Based on Parallel Pathfinding

ISPRS International Journal of Geo-Information, 2023
Existing approaches for the 3D modeling of tunnels suffer from several problems, such as highly difficult data acquisition, redundancy of model data, large computational burden, and the inability of the resulting models to be monolithic.
Jiaming Ye, Defu Che, Baodong Ma, Quan Liu, Kehan Qiu, Xiangxiang Shang   +5 more
doaj   +1 more source

Energy-Efficient 3D Path Planning for Complex Field Scenes Using the Digital Model with Landcover and Terrain

ISPRS International Journal of Geo-Information, 2023
Path planning is widely used in many domains, and it is crucial for the advancement of map navigation, autonomous driving, and robot path planning. However, existing path planning methods have certain limitations for complex field scenes with undulating ...
Baodong Ma, Quan Liu, Ziwei Jiang, Defu Che, Kehan Qiu, Xiangxiang Shang   +5 more
doaj   +1 more source

Investigation of Vegetation Changes in Different Mining Areas in Liaoning Province, China, Using Multisource Remote Sensing Data

Remote Sensing, 2021
Mining can provide necessary mineral resources for humans. However, mining activities may cause damage to the surrounding ecology and environment. Vegetation change analysis is a key tool for evaluating damage to ecology and the environment.
Baodong Ma, Xiangru Yang, Yajiao Yu, Yang Shu, Defu Che   +4 more
doaj   +1 more source

A Three-Dimensional Triangle Mesh Integration Method for Oblique Photography Model Data

Buildings, 2023
Oblique photography 3D models are increasingly used in 3D modeling and visualization, urban planning and design, smart cities, smart mines, and other fields.
Defu Che, Min Su, Baodong Ma, Feng Chen, Yining Liu, Duo Wang, Yanen Sun   +6 more
doaj   +1 more source

Is there a one-to-one correspondence between ionospheric anomalies and large earthquakes along Longmenshan faults? [PDF]

Annales Geophysicae, 2014
On 12 May 2008, a destructive M8.0 earthquake struck Wenchuan County (31.0° N, 103.4° E) in the Longmenshan fault zone of southwestern China. Five years later, on 20 April 2013, another terrible M7.0 earthquake struck Lushan County (30.3° N, 103.0° E)
L. M. He, L. X. Wu, L. X. Wu, A. De Santis, A. De Santis, S. J. Liu, Y. Yang   +6 more
doaj   +1 more source

REMOTE SENSING EXTRACTION OF STOPES AND TAILINGS PONDS IN AN ULTRA-LOW-GRADE IRON MINING AREA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
With the development of economy, global demand for steel has accelerated since 2000, and thus mining activities of iron ore have become intensive accordingly.
B. Ma, Y. Chen, X. Li, L. Wu
doaj   +1 more source

Grid-based representation and dynamic visualization of ionospheric tomography [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
The ionosphere is a dynamic system with complex structures. With the development of abundant global navigation satellite systems, the ionospheric electron density in different altitudes and its time variations can be obtained by ionospheric tomography ...
L. M. He, Y. Yang, C. Su, J. Q. Yu, F. Yang, L. X. Wu   +5 more
doaj   +1 more source

Superimposed disturbance in the ionosphere triggered by spacecraft launches in China [PDF]

Annales Geophysicae, 2015
Using GPS dual-frequency observations collected by continuously operating GPS tracking stations in China, superimposed disturbances caused by the integrated action of spacecraft's physical effect and chemical effect on ionosphere during the launches ...
L. M. He, L. X. Wu, L. X. Wu, S. J. Liu, S. N. Liu   +4 more
doaj   +1 more source