Slope vegetation characteristics and community stability at different restoration years of open-pit coal mine waste dump

Coal mine waste dump often occur landslide and collapse disasters, the prevention measures and stability analysis of the waste dump must be studied.Firstly,the major factors that can cause landslide in Nantong coal mine waste dump,Chongqing were analyzed,secondly,the stability of four geological cross sections were analyzed by the limiting equilibrium method and FLAC numerical simulation method,the conclusions from two methods are same,and the conclusion is the safety factors of cross sections A and C are smallest and landslide and debris flow disasters will occur easily when face with a long heavy rainfall.thirdly, according to the main factors that can cause waste dump landslide easily and combine with the analysis results of limit equilibrium method and discrete element numerical simulation seven prevention measures were proposed, these measures can provide references for similar waste dump.

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Assessment of Rosa Majalis Herrm-Fruits Contamination with Heavy Metals in Open-Pit Coal Mine Waste Dumps

Modern Applied Science ◽

10.5539/mas.v9n4p270 ◽

2015 ◽

Vol 9 (4) ◽

Author(s):

Irina Nikolaevna Egorova ◽

Olga Alexandrovna Neverova ◽

Lyubov Sergeevna Dyshlyuk

Keyword(s):

Heavy Metals ◽

Coal Mine ◽

Mine Waste ◽

Open Pit ◽

Coal Mine Waste ◽

Waste Dumps

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Guidelines for Mine Waste Dump and Stockpile Design

10.1071/9781486303519 ◽

2017 ◽

Cited By ~ 5

Keyword(s):

Site Selection ◽

Mine Waste ◽

Open Pit ◽

Economic Damage ◽

Waste Dump ◽

Analysis And Design ◽

Waste Dumps ◽

Mine Waste Dump ◽

And Performance ◽

Construction Operation

Guidelines for Mine Waste Dump and Stockpile Design is a comprehensive, practical guide to the investigation, design, operation and monitoring of mine waste dumps, dragline spoils and major stockpiles associated with large open pit mines. These facilities are some of the largest man-made structures on Earth, and while most have performed very well, there are cases where instabilities have occurred with severe consequences, including loss of life and extensive environmental and economic damage. Developed and written by industry experts with extensive knowledge and experience, this book is an initiative of the Large Open Pit (LOP) Project. It comprises 16 chapters that follow the life cycle of a mine waste dump, dragline spoil or stockpile from site selection to closure and reclamation. It describes the investigation and design process, introduces a comprehensive stability rating and hazard classification system, provides guidance on acceptability criteria, and sets out the key elements of stability and runout analysis. Chapters on site and material characterisation, surface water and groundwater characterisation and management, risk assessment, operations and monitoring, management of ARD, emerging technologies and closure are included. A chapter is also dedicated to the analysis and design of dragline spoils. Guidelines for Mine Waste Dump and Stockpile Design summarises the current state of practice and provides insight and guidance to mine operators, geotechnical engineers, mining engineers, hydrogeologists, geologists and other individuals that are responsible at the mine site level for ensuring the stability and performance of these structures. Readership includes mining engineers, geotechnical engineers, civil engineers, engineering geologists, hydrogeologists, environmental scientists, and other professionals involved in the site selection, investigation, design, permitting, construction, operation, monitoring, closure and reclamation of mine waste dumps and stockpiles.

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Environmental investigation of pollutants in coal mine operation and waste dump area monitored in Ordos Region, China

RSC Advances ◽

10.1039/d0ra10586d ◽

2021 ◽

Vol 11 (17) ◽

pp. 10340-10352

Author(s):

Ang Li ◽

Changkun Chen ◽

Jie Chen ◽

Peng Lei

Keyword(s):

Environmental Impact ◽

Impact Assessment ◽

Environmental Impact Assessment ◽

Coal Mine ◽

Mine Waste ◽

Waste Dump ◽

Environmental Investigation ◽

Coal Mine Waste ◽

Waste Dumps

The increasingly severe emissions of greenhouse and poisonous gases from environmentally unsafe stockpiled coal mine waste dumps have urged people from the academia as well as the industry to focus on environmental impact assessment.

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Sample Rocks Tests and Slope Stability Analysis of a Mine Waste Dump

Advances in Civil Engineering ◽

10.1155/2018/6835709 ◽

2018 ◽

Vol 2018 ◽

pp. 1-17 ◽

Cited By ~ 2

Author(s):

Ping Zou ◽

Ximo Zhao ◽

Zhonghua Meng ◽

Aibing Li ◽

Zhengyu Liu ◽

...

Keyword(s):

Stability Analysis ◽

Failure Modes ◽

Sliding Mode ◽

Mine Waste ◽

Limit Equilibrium ◽

Soil Layer ◽

Open Pit ◽

Waste Dump ◽

Waste Rocks ◽

Mine Waste Dump

The safety and stability of waste dump are vital influencing factors to the mine sustainability and mine employees. Based on a real mine project in a certain open-pit mine waste dump in Tibet, the in situ test on waste rocks from waste dump, including measurements of density, water content, rock size, and natural repose angle, was conducted. Afterwards, these sample waste rocks, of which grain size is less than 5 cm, were selected for indoor large-scale shear test under natural and saturated conditions. By using some engineering methods, the physical and mechanical parameters of waste rocks layer were then determined accordingly. MIDAS-GTS/NX has the advantage of pre-processing modeling. FLAC3D has good computational and analytical capabilities. The process of dump accumulation is simulated numerically. According to the calculation results of FLAC3D, the distribution of stress, displacement and plastic zone in the dump is obtained. FOS (factor of safety) for each analytical step in this model was then calculated through the strength reduction method. The limit equilibrium method is used for waste dump stability analysis considering three states: only applied gravity, applied gravity and rainfall, and applied gravity and underground water. The results from this analysis show that the waste dump is stable. The potential failure modes of waste dump mainly consist of the “combined sliding mode” which has circular sliding in upper side and broken line sliding that cuts through gravel-soil layer into heavily weathered layer in the bottom. This paper documents some of the procedures and approaches utilized for waste dump life-of-mine design analysis. It provides reference for further waste dump optimization.

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Assessment of the Underground Water Contaminated by the Leachate of Waste Dump of Open Pit Coal Mine Based on RBF Neural Network

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.599.272 ◽

2012 ◽

Vol 599 ◽

pp. 272-277 ◽

Cited By ~ 1

Author(s):

Zhi Bin Liu ◽

Xiao Wei Yang

Keyword(s):

Neural Network ◽

Network Model ◽

Neural Network Model ◽

Coal Mine ◽

Comprehensive Evaluation ◽

Rbf Neural Network ◽

Training Sample ◽

Underground Water ◽

Open Pit ◽

Waste Dump

This paper used RBF artificial neural network to evaluate the underground water contaminated by the leachate of waste dump of open pit coal mine of Xinqiu in Fuxin. Firstly, with the advantages of neural network method in dealing with nonlinear problem, the RBF neural network model was built. Then, the normalized standard matrix was taken as training sample and the MATLAB software was used to train the training sample. Finally, the monitoring data were taken as test samples and were inputted in the RBF neural network model to evaluate the groundwater quality of study area. At the same time, the concept of degree of membership was adopted in the result making it more objective and accurate. The result shows that the ground water of this mining is seriously polluted, class of its pollution is Ⅳ-Ⅴ.The method with strong classification function and reliable evaluation results is simple and effective, and can be widely applied in all kinds of water resources comprehensive evaluation.

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