scholarly journals Study on the Shape Optimization of Composite Slope at the End of Irregular Boundary Open-Pit Mine

CONVERTER ◽  
2021 ◽  
pp. 582-596
Author(s):  
Haoran Li, Et al.
Keyword(s):  
Limit Equilibrium ◽  
Open Pit Mine ◽  
Mine Safety ◽  
Open Pit ◽  
Safe Distance ◽  
The South ◽  
Dump Site ◽  
Irregular Boundary ◽  
Boundary Area ◽  
The Impact

In order to optimize the shape of the compound slope at the end of the open-pit mine under the condition of non-irregular boundary, the compound slope composed of the stope end and the inner dump in the south of the open-pit mine in Pingshuo is studied. Due to the impact of land acquisition, the space of external dump is seriously insufficient, and with the development and change of mining engineering and the influence of geological structure, the problem of compound form optimization and the release and utilization of internal drain space in the south side is generated. Through field investigation and theoretical analysis and numerical analysis method, on the basis of investigating the ore party production status, to establish a 3 d geological model, select two battery profile typical position, using rigid body limit equilibrium method from the perspective of 2 d, in the full study south help shrink battery limit compound stope side slope and mine safety distance, flat width, and the direction of dump active line and the relationship between the stability design of multiple slope configuration scheme, through the various methods of slope stability, enforceability and comparing some important parameters such as displacement capacity, ultimately determine the technology feasible economic and reasonable boundary zone composite slope space form. Based on the above research results, FLAC3D software was used to study the stress-strain relationship inside the slope, revealing the deformation and failure mechanism and stability of the composite slope in the south bound area. The results show that the landslide mode and stability of the composite slope in the south bound area of pingshuoAndaobao open-pit coal mine are mainly controlled by the safe distance between stope and dump and the weak layer of 11 coal floor. According to the design, the economic and reasonable parameters of the composite slope in the south slope shrinkage boundary area are as follows: the safe distance between the stope end side and the dump site is 50m, the width of the dump flat plate is 60m, and the working line Angle of the dump line with the abandonment height of 255m is 125°, the total discard space was95,934,100 m3.

scholarly journals An Optimum Deployment Algorithm of Camera Networks for Open-Pit Mine Slope Monitoring

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1148
Author(s):  
Hua Zhang ◽  
Pengjie Tao ◽  
Xiaoliang Meng ◽  
Mengbiao Liu ◽  
Xinxia Liu
Keyword(s):  
Focal Length ◽  
Field Tests ◽  
Mineral Resources ◽  
Video Camera ◽  
Open Pit Mine ◽  
Mine Safety ◽  
Open Pit ◽  
Prototype System ◽  
Mine Slope ◽  
Slope Monitoring

With the growth in demand for mineral resources and the increase in open-pit mine safety and production accidents, the intelligent monitoring of open-pit mine safety and production is becoming more and more important. In this paper, we elaborate on the idea of combining the technologies of photogrammetry and camera sensor networks to make full use of open-pit mine video camera resources. We propose the Optimum Camera Deployment algorithm for open-pit mine slope monitoring (OCD4M) to meet the requirements of a high overlap of photogrammetry and full coverage of monitoring. The OCD4M algorithm is validated and analyzed with the simulated conditions of quantity, view angle, and focal length of cameras, at different monitoring distances. To demonstrate the availability and effectiveness of the algorithm, we conducted field tests and developed the mine safety monitoring prototype system which can alert people to slope collapse risks. The simulation’s experimental results show that the algorithm can effectively calculate the optimum quantity of cameras and corresponding coordinates with an accuracy of 30 cm at 500 m (for a given camera). Additionally, the field tests show that the algorithm can effectively guide the deployment of mine cameras and carry out 3D inspection tasks.

scholarly journals Analysis of Mining Waste Dump Site Stability Based on Multiple Remote Sensing Technologies

2018 ◽  
Vol 10 (12) ◽  
pp. 2025 ◽  
Author(s):  
Lianhuan Wei ◽  
Yun Zhang ◽  
Zhanguo Zhao ◽  
Xiaoyu Zhong ◽  
Shanjun Liu ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Stability Analysis ◽  
Limit Equilibrium ◽  
Mining Waste ◽  
Open Pit ◽  
Dump Site ◽  
Spatial And Temporal Distributions ◽  
Small Baseline Subset ◽  
Small Baseline ◽  
Local Safety

The mining waste of open pit mines is usually piled-up in dump sites, making a man-made hill more than tens of meters high. Because of the loose structure of the dump sites, landslides or debris flow may occur after heavy rainfall, threatening local lives and properties. Therefore, dump stability analysis is crucial for ensuring local safety. In this paper, a collaborative stability analysis based on multiple remote sensing technologies was innovatively conducted at the Xudonggou dump of the Anqian iron mine. A small baseline subset (SBAS) analysis was used to derive the spatial and temporal distributions of displacements in the line-of sight (LOS) over the whole study area. The deformation in LOS is translated to the slope direction based on an assumption that displacements only occur parallel to the slope surface. Infrared Thermography (IRT) technology was used to detect weak aquifer layers located at the toe of possible landslide bodies. Then, numerical simulations based on the limit equilibrium method were conducted to calculate the factor of safety for three profiles located on the dump site. The results, emerging from multiple remote sensing technologies, were very consistent and, eventually, the landslide hazard zone of the Xudonggou dump site was outlined.

scholarly journals The impact of haulroad geometric parameters on open pit mine strip ratio

2019 ◽  
Vol 72 (1 suppl 1) ◽  
pp. 25-31
Author(s):  
Douglas Alexandre Gonçalves Alegre ◽  
Rodrigo de Lemos Peroni ◽  
Eduardo da Rosa Aquino
Keyword(s):  
Open Pit Mine ◽  
Geometric Parameters ◽  
Open Pit ◽  
The Impact

scholarly journals Sustainability assessment of an open-pit mine using a new model developed based on Folchi approach

2021 ◽  
pp. 141-147
Author(s):  
Esmaeil Pouresmaeili ◽  
Arash Ebrahimabadi ◽  
Hadi Hamidian
Keyword(s):  
Sustainability Assessment ◽  
Research Work ◽  
Health And Safety ◽  
Surface Mining ◽  
Significant Degree ◽  
Influential Factors ◽  
Open Pit Mine ◽  
Influential Factor ◽  
Open Pit ◽  
The Impact

Purpose. Surface mining is one of the main activities that affect the environment, economy and society in its surrounding region. Therefore, it is important to investigate the results of this activity in terms of sustainability assessment. Measuring sustainability of a mine requires a methodology which covers all aspects of mining sustainability.The purpose of the article is to assess the sustainability of career development and determine which components require modification and more consideration. Methodology.Many researchers have tried to develop certain frameworks to measure sustainable score of mining activities, while some of them are complicated and the rest of them do not cover all aspects of sustainability. In this research work, in order to evaluate the sustainability of an open-pit mine, Folchi method based on Multi-Criteria Decision Making (MCDM) approach was used. With this respect, primarily, influential factors and the impact of each influential factor on the sustainable component of an open-pit mine were investigated. Findings.In this regard, Anguran lead and zinc open-pit mine was chosen as a case study. A correlation matrix of the weighted impact of each influential factor on each environmental component was built up based on experts opinion. Afterwards, the magnitude of the influential factors and the impact of each influential factor on the sustainable component of Anguran mine were calculated. Originality. The results obtained using the Folchi method demonstrated that human health and safety, water quality, air quality, flora and fauna, as well as the surface have become decisive factors in the sustainability of Anguran open-pit mine. Practical value.Finally, it can be concluded that Anguran quarry is characterized by a significant degree of resilience due to the low level of influence of the influential factors, and there is no need to modify any influential factors.

Using time series InSAR to assess the deformation activity of open-pit mine dump site in severe cold area

2021 ◽  
Author(s):  
Chuangang Gong ◽  
Shaogang Lei ◽  
Zhengfu Bian ◽  
Yu Tian ◽  
Zhouai Zhang ◽  
...  
Keyword(s):  
Time Series ◽  
Open Pit Mine ◽  
Open Pit ◽  
Dump Site ◽  
Cold Area ◽  
Mine Dump

scholarly journals Utilization of Geodetic Methods Results in Small Open-Pit Mine Conditions: A Case Study from Slovakia

Minerals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 489 ◽  
Author(s):  
Slavomir Labant ◽  
Marcela Bindzarova Gergelova ◽  
Zofia Kuzevicova ◽  
Stefan Kuzevic ◽  
Gabriel Fedorko ◽  
...  
Keyword(s):  
Land Surface ◽  
Vegetative State ◽  
Rapid Change ◽  
Surface Mining ◽  
Open Pit Mine ◽  
Open Pit ◽  
Aerial Photogrammetry ◽  
Geodetic Measurements ◽  
Landsat 7 ◽  
The Impact

Mining, especially surface mining, has a significant impact on the upper part of the soil cover, including fauna and flora. The article deals with the use of geodetic methods to observe the mining process and its possible impact on the environment. The created model can be used to design the recovery and reclamation of open-pit mines after their closure and mining termination. For the modeling of an open-pit mine, 2151 points from two stages of geodetic measurements were used. Graphical presentations of the geodetic measurements were compared with data from aerial photogrammetry. The measurement and processing results were used to visualize the spatial changes in the open-pit mine, which are necessary to take measures related to the recovery of the landscape affected by mining. Based on the calculation, 145.266 m3 were extracted during the period under exploration. When calculating the average excavated volume per working day, it was found that 188 m3 = 500 tons = 0.5 kilotons per day were extracted between the monitored periods. When comparing the original surface and the generated model of the open-pit mine, it was found that the entire top of the rock massif was permanently removed in the total volume of 3,421,000 m3. To capture the impact of mining on the surrounding environment, multispectral images of Landsat 7 and 8 during the observed period. Focused attention was divided into two factors, land surface temperature, and vegetation condition. The results from the temperature maps show that the open-pit mine is becoming a heat island. Analysis of the vegetative state confirms the rapid change in the health of vegetation, resp. reduction of its condition in the area around the open-pit mine. The presented results show that the selected methods and procedures are applicable in the conditions of the small mining company in Slovakia.

Study on Optimization Method of the Slope Angle Design for Open-Pit Mine

2013 ◽  
Vol 734-737 ◽  
pp. 656-660 ◽  
Author(s):  
Shao Jie Feng ◽  
Shi Guo Sun ◽  
Ya Nan Yi
Keyword(s):  
Rock Mass ◽  
Optimization Design ◽  
Slope Angle ◽  
Optimization Method ◽  
Open Pit Mine ◽  
Mine Safety ◽  
Open Pit ◽  
Resource Exploitation ◽  
Original Design ◽  
Slope Rock

The critical slip field theory is applied to optimization design of the slope angle. An intelligent matching optimization of the slope angle design is carried out based on the strata distribution, mechanics parameters of rock mass and a given security reserve. That is the implementation of the maximum allowable slope angle of slope rock mass under the given conditions. Optimized by the final highwall of Buzhaoba Open-Pit Mine, the overall slope angle increased 3°compared to the original design. Which implement the optimum slope angle of final highwall, modified the shortcoming in the original design and ensure the maximization of mine safety and the resource exploitation.

Determination of Safe Distance While Blasting at Open Pit Mine Zabrdica, Valjevo

2014 ◽  
pp. 749-758
Author(s):  
Slobodan Trajković ◽  
Suzana Lutovac ◽  
Marina Ravilić
Keyword(s):  
Open Pit Mine ◽  
Open Pit ◽  
Safe Distance
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