scholarly journals Hydrochemical analysis and identification of open-pit mine water sources: a case study from the Dagushan iron mine in Northeast China

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Qianling Liu ◽  
Zhongjian Zhang ◽  
Bin Zhang ◽  
Wenping Mu ◽  
Huijie Zhang ◽  
...  
Keyword(s):  
Mine Water ◽  
Mining Area ◽  
Water Sources ◽  
Open Pit Mine ◽  
Open Pit ◽  
Seepage Water ◽  
Water Seepage ◽  
Quantitative Calculation ◽  
Iron Mine ◽  
Southern Side

AbstractThe identification of open-pit mine water sources is of great significance in preventing water disasters. Combined with hydrochemistry and multivariate statistical analysis, this paper systematically analyzed the hydraulic connections between aquifers and the complex seepage water sources in the pit and roadway of Dagushan iron mine through qualitative analysis and quantitative calculation. According to the hydrochemical characteristics of the study area, the causes of seepage water at different positions in the mining area were reasonably explained. The results show that there is a possible hydraulic connection or similar source of water body between the bedrock fissure aquifer and the eluvium pore aquifer. The water seepage of 2# roadway mainly comes from bedrock fissure aquifer in the north of mining area. The reason for serious water seepage in the 3# roadway and the western side of the pit is that the fault connects the shallow alluvial pore aquifer and bedrock fissure aquifer. The source of water on the southern side pit comes from the river and groundwater on the southern side of the mine. The results presented here provide significant guidance for the management of mine water seepage problems.

Prediction of seepage water pressure for slope stability at the Gol-E-Gohar open pit mine

2016 ◽  
Vol 52 (6) ◽  
pp. 1069-1079 ◽  
Author(s):  
E. Moosavi ◽  
R. Shirinabadi ◽  
M. Gholinejad
Keyword(s):  
Slope Stability ◽  
Water Pressure ◽  
Open Pit Mine ◽  
Open Pit ◽  
Seepage Water

Open-Pit Mine Fine DEM Model Establishment and Updating

2012 ◽  
Vol 524-527 ◽  
pp. 508-514
Author(s):  
Ai Gong Xu ◽  
Yang Cui ◽  
Xin Sui
Keyword(s):  
Spatial Data ◽  
Model Updating ◽  
Mining Area ◽  
Open Pit Mine ◽  
Open Pit ◽  
Improved Method ◽  
Generation Algorithm ◽  
Topological Relationships ◽  
Model Update ◽  
Dem Model

In view of open-pit mine complex special terrain, to improved method of constructing triangulated irregular net and combined with the extended boundary, that can remission the phenomenon that steps were flattened and the problem of inefficiency mining area model update. Using constrained triangulated irregular net once generation algorithm, through extraction of spatial data, establish topological relationships and spatial indexing, eventually build a constraints of triangulated irregular net within the boundary constraint line. Combining extended boundary with the triangulated irregular net generated algorithm, can realize the establishment partial model as well as partial and overall model splicing. Thus enhanced the efficiency of the mining area overall model updating.

scholarly journals GROUND DEFORMATION EXTRACTION USING VISIBLE IMAGES AND LIDAR DATA IN MINING AREA

2016 ◽  
Vol XLI-B7 ◽  
pp. 505-512 ◽  
Author(s):  
Wenmin Hu ◽  
Lixin Wu
Keyword(s):  
Time Series ◽  
High Resolution ◽  
Ground Deformation ◽  
Mining Area ◽  
Open Pit Mine ◽  
Space Distribution ◽  
Open Pit ◽  
Mining Activities ◽  
Study Results ◽  
The Mean

Recognition and extraction of mining ground deformation can help us understand the deformation process and space distribution, and estimate the deformation laws and trends. This study focuses on the application of ground deformation detection and extraction combining with high resolution visible stereo imagery, LiDAR observation point cloud data and historical data. The DEM in large mining area is generated using high-resolution satellite stereo images, and ground deformation is obtained through time series analysis combined with historical DEM data. Ground deformation caused by mining activities are detected and analyzed to explain the link between the regional ground deformation and local deformation. A district of covering 200 km<sup>2</sup> around the West Open Pit Mine in Fushun of Liaoning province, a city located in the Northeast China is chosen as the test area for example. Regional and local ground deformation from 2010 to 2015 time series are detected and extracted with DEMs derived from ZY-3 images and LiDAR point DEMs in the case study. Results show that the mean regional deformation is 7.1 m of rising elevation with RMS 9.6 m. Deformation of rising elevation and deformation of declining elevation couple together in local area. The area of higher elevation variation is 16.3 km<sup>2</sup> and the mean rising value is 35.8 m with RMS 15.7 m, while the deformation area of lower elevation variation is 6.8 km<sup>2</sup> and the mean declining value is 17.6 m with RMS 9.3 m. Moreover, local large deformation and regional slow deformation couple together, the deformation in local mining activities has expanded to the surrounding area, a large ground fracture with declining elevation has been detected and extracted in the south of West Open Pit Mine, the mean declining elevation of which is 23.1 m and covering about 2.3 km<sup>2</sup> till 2015. The results in this paper are preliminary currently; we are making efforts to improve more precision results with invariant ground control data for validation.

scholarly journals Onsite Tests and Numerical Simulation of Broken Rock Zones in Surrounding Rocks of Seepage Roadways under Blasting

Geofluids ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Zhouyuan Ye ◽  
Kun Pan ◽  
Zhihua Zhou
Keyword(s):  
Numerical Simulation ◽  
Shear Failure ◽  
Mechanical Response ◽  
Water Pressure ◽  
Mining Area ◽  
Seepage Water ◽  
Blasting Vibration ◽  
Fracture Density ◽  
Iron Mine ◽  
Ground Stress

To study the influence of blasting vibration on the broken rock zone around a seepage roadway and provide guidance for design of the roadway support, the broken rock zones around rock of seepage roadways under production blasting vibration are determined by onsite tests in a mining area, Daye iron mine. During the testing process, it is found that blasting vibration causes internal cracks of surrounding rocks to initiate and develop, the fracture density increases, the acoustic wave velocity of rock mass decreases, and the broken rock zones expand. At the same time, through onsite observation, it is found that blasting vibration results in crack development and formation of a water pathway to lead to surface water into the ground. The mechanical response around rock of the seepage roadway under blasting vibration is simulated by the two-dimensional realistic fracture progress analysis calculation software (RFPA2D). It is found that internal cracks of roadway surrounding rock initiate, propagate, and join up gradually, and the fracture range is expanding under the seepage water pressure, ground stress, and cyclic loads, and the broken rock zones also expand. The results from numerical simulation are consistent with the results of onsite tests. It is also found that the tensile stress appears around some cracks, leading to part of the cracks more likely to generate shear failure under the seepage water pressure during simulation.

scholarly journals Study on shaping slope stability of dump in eastern grassland open-pit mine

2020 ◽  
Vol 194 ◽  
pp. 04043
Author(s):  
Guo Xiaoli ◽  
Yan Jiancheng ◽  
Li Xueliang ◽  
Wen Xin ◽  
Li Xingli
Keyword(s):  
Slope Stability ◽  
Slope Angle ◽  
Mining Area ◽  
Open Pit Mine ◽  
Open Pit ◽  
Open Pit Mining ◽  
Dump Slope ◽  
The Stability ◽  
Step Type ◽  
Mine Dump

The dumps in the open-pit mining area in the eastern grassland are prone to landslides due to the fragile ecological environment, so it is inevitable to reshape the dump slopes. In order to explore a more scientific method for slope shaping of open-pit mine dump, slope stability analysis were used to compare effect of three types of slope-type (wave-shaped, slope-shaped and step-shaped slope shaping method)in outside dumping site of Baori Hiller open-pit mine. The results show that the slope stability is negatively correlated with the slope angle, and the stability of different shaping slopes is realized as wave-shaped slope (F=2.711)> Slope-shaped slope(F=2.513)>Step-shaped slope(F=1.047), in which the wave type and slope type are all within the safe range, but the step type slope is unstable; in consideration of cost, stability and erosion resistance, it is better to set the slope angle of the dump to 15°.The wave-shaped shaping method of the natural dumping of the excavation field outside the Baori Hiller open-pit mine has the best effect and is worth promoting.

An Application of Stored Procedures in a GPS-Based Slope Online Monitoring System for Open-Pit Mine

2013 ◽  
Vol 351-352 ◽  
pp. 1193-1197
Author(s):  
Zhen Shan Liu ◽  
Ren Qiang Gao ◽  
Ming Chen ◽  
Hai Sheng Yang ◽  
Qi Wang ◽  
...  
Keyword(s):  
Monitoring System ◽  
High Performance ◽  
Online Monitoring ◽  
Mining Area ◽  
Open Pit Mine ◽  
Open Pit ◽  
Stored Procedure ◽  
Static Data ◽  
High Efficient ◽  
Online Monitoring System

As for implementing functions in slope online monitoring system by exploiting data acquired via GPS, good and high efficient stored procedures are essential. More importantly, a good designed stored procedure can simultaneously provide decision services for multiple users. By integrating the Client/Server and Browser/Server subsystems, this system explores a much convenient and automatic way to manages the mining area. 18 database tables are designed to support the database operation, such as the GPSSTATICRESULT table that storeds accurate static data and the STATIONINFO table that records all equipment information. Moreover, the design and implementation of stored procedures is analysed to flexibly support complicated system functions. The results indicate that system working with stored procedures has high performance on applications open-pit mine. The results not only confirmed the applicability and effectiveness of stored procedures, but also revealed system with stored procedures has advantages of conveniently managing mining data, timely sending real-time monitoring information, optimizing security of mine production and making auxiliary decision for enterprise.

scholarly journals Evaluation of groundwater pollution in a mining area using analytical solution: a case study of the Yimin open-pit mine in China

SpringerPlus ◽  
2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Tianxin Li ◽  
Li Li ◽  
Hongqing Song ◽  
Linglong Meng ◽  
Shuli Zhang ◽  
...  
Keyword(s):  
Analytical Solution ◽  
Groundwater Pollution ◽  
Mining Area ◽  
Open Pit Mine ◽  
Open Pit
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