The Study on Earthwork Calculation of Open-Pit Mine Based on Three-Dimensional Laser Scanning Technology

Author(s):  
Fan Qiang ◽  
Yanan Zhang ◽  
Hailong Li
Sensors ◽  
2020 ◽  
Vol 20 (8) ◽  
pp. 2337 ◽  
Author(s):  
Xiangtian Zheng ◽  
Xiufeng He ◽  
Xiaolin Yang ◽  
Haitao Ma ◽  
Zhengxing Yu ◽  
...  

Ground-based synthetic aperture radar interferometry (GB-InSAR) is a valuable tool for deformation monitoring. The 2D interferograms obtained by GB-InSAR can be integrated with a 3D terrain model to visually and accurately locate deformed areas. The process has been preliminarily realized by geometric mapping assisted by terrestrial laser scanning (TLS). However, due to the line-of-sight (LOS) deformation monitoring, shadow and layover often occur in topographically rugged areas, which makes it difficult to distinguish the deformed points on the slope between the ones on the pavement. The extant resampling and interpolation method, which is designed for solving the scale difference between the point cloud and radar pixels, does not consider the local scattering characteristics difference of slope. The scattering difference information of road surface and slope surface in the terrain model is deeply weakened. We propose a differentiated method with integrated GB-InSAR and terrain surface point cloud. Local geometric and scattering characteristics of the slope were extracted, which account for pavement and slope differentiating. The geometric model is based on a GB-InSAR system with linear repeated-pass and the topographic point cloud relative observation geometry. The scattering model is based on k-nearest neighbor (KNN) points in small patches varies as radar micro-wave incident angle changes. Simulation and a field experiment were conducted in an open-pit mine. The results show that the proposed method effectively distinguishes pavement and slope surface deformation and the abnormal area boundary is partially relieved.


2018 ◽  
Vol 60 ◽  
pp. 00030
Author(s):  
Vasyl Tymoshchuk ◽  
Yevheniia Sherstiuk ◽  
Tamara Morozova

The purpose is to study the patterns of groundwater influxe formation within the north-eastern side of the Private Joint-Stock Company “Inhuletskyi hirnycho-zbahachuvalnyi kombinat” (PJSC INHZK) open-pit mine in the conditions of disturbed hydrodynamic regime of the eastern adjacent side of the open-pit mine by the developed three-dimensional geofiltration model. The patterns have been determined of the open-pit mine water influx formation on the basis of a complex analysis of the actual data related to geological and hydrogeological structure of the iron ore deposit, the intensity and character of groundwater influx within the eastern side of the open-pit mine, and the results of numerical simulation of geofiltrational processes. By the results of inverse problems solutions, the geofiltration model reflects adequately the geological, hydrogeological, and geotechnical conditions of the studied territory where the technogenically disturbed hydrodynamic regime have been formed; the calculated values of the open-pit mine water influx within the eastern side of the open-pit mine and its north-eastern site, have been determined. It has been found that the values of groundwater influx and their distribution within the eastern side of the open-pit mine and its north-eastern site depend on the manner of the water-permeable alluvial strata occurrence on the eroded surface of seat clays, and the existence of a technogenic aquifer near the rock-disposal dump base at the adjacent site of the open-pit mine. The results of this research form the basis for a substantiation of technical solutions for dewatering the north-eastern side of the PJSC INHZK open-pit mine in the conditions of further development of mining operations, and for determining the hydrodynamic parameters of dewatering facilities.


2017 ◽  
Vol 12 ◽  
pp. 50-55
Author(s):  
A.Yu. Krotenok ◽  
◽  
D.N. Shurygin ◽  
T.V. Litovchenko ◽  
Yu.A. Semenova ◽  
...  

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