Questions related to Coal Mining
Artificial dam and coal pillar dam of underground reservoir in coal mine have great differences in material, thickness and stress. In addition to establishing similar model, how to carry out test to study the stability of their combination?
I am doing research that is required to do simulation for pillar strength and FOS of pillars in the waterlogged areas using FLAC3D, but I am new to this software, can anyone help me with the geometry development of a coal mine panel and code that I can use to do the simulation? I will really thankful if someone can please help me with this code and the processes leading to such simulation. Thanks
I am trying to study the application of large capacity lithium iron phosphate battery in coal mine power system, but there is no suitable data set. I will be grateful if any one can introduce similar data set.
I am working on my dissertation, on the topic of energy effisient benchmarking of the iron-ore mines in Ukraine. I am interesting data about electricity consumption and ore production in the iron ore mine, for compare with Ukrainian mines.
I am able to find only few papers related to trace element concentrations in coal and coal dust. Please suggest a few articles regarding the such works.
I would like to know that why post-mining sites are good locations for studying long-term dynamics of soil fauna. For starting a new research in this area, what new cases are still remained unknown to be studied or even poorly understood.
Recently "dust pollution" has become one of the main problems in my country (Iran). We know that both of "roof garden" and "green wall" can absorb the dust pollution, but I need to know which of them can absorb more than the other (in the same condition from the area and the location).
With coal mines still being planned and opened with 30-40 year lives, is coal seam gas (CSG) a real clean option or is it just as dirty as coal for our global power stations? Most CSG wells have lives of up to 15-25 years. When are we going to take other energy sources, such as solar and wind seriously? Can they be taken seriously as the petroleum industry buys shares into renewable energy sources and places them on the back burner until expensive lead in costs for coal and gas mines and wells can be recouped?
I plan to open coal mine in Hungary for material use of coal and CO2
I have the inventory for rare earths, and there are a lot of articles in the internet
but no practical application with profitability figures
I'd like to have a lead on that
Mankind's ideas of energy production must be re-thought in order to survive... The relyance on fossil fuels or nuclar energy does not help. All sources of energy should be thought about, so tidal energy is OK, but not very efficient. It has be shown to work (e.g. in the Netherlands and France in estuaries of rivers)... Wind energy is efficient in costal areas but has been depending on state funding... But do you honestly think that coal mining or the production of nuclear energy/Waste is not depending from state funding/subsidies?
An introduction can be seen by the Open University, see URL:
Do you have helpful ideas or thougths?
I am looking for the required #water #quality levels/criteria for a "non-drinking" water (or #recycled #wastewater) that should not be exceeded when using that water for #mine #operations? Any info is welcome.
I know seawater has been used in Copper mines in Chile. Any other examples of other "non-drinking water" use in mines?
Info on Underground Mines... and especially in the coal mining space is highly appreciated.
I am working on designing a stimulated layout that is scalable and optimized for thin coal seams in Punjab, Pakistan. The average thickness of coal seam is 3-9'' that's why there is low production in coal mines. So it is difficult to mine out it in valuable price. I want to optimized the production of that coal mines by designing a optimized layout. Kindly share your experiences. Thank you!
Is there any possibility to emit mercury from coal mines except coal fires?
as we all know that anthropogenically after combustion of coals mercury emits into atmospher from coal fired thermal power plants.But I want to know from coal mines.
Numerical modelling has been widely used to analyze the various type of issues related to the underground mining and tunnelling: subsidence induced by longwall coal mining; stresses computation around longwall coal face etc.
After dust control measures were put in place the incidence of progressive massive fibrosis declined, but recently it is making a come back in coal mine workers. What do you think is the cause and how to bring the incidence down again ?
I'm searching for open access and peer reviewed international journal (obviously of high quality and with Impact Factor) to publish research on development and operation for mineral deposits. Best Regards Andrey Khorolskiy
It is known that the presence of groundwater can significantly impact any coal mining operation.
On the contrary,
Whether coal mining operation has a significant negative impact on groundwater resources?
I am looking for some studies or books in (metal or coal) pit lakes that have summarized (if possible) the combined effect of oxygen physical entertainment into bottom thermal zones (eg monimolimnion) and the impact of biogeochemical processes (eg methane, ammonia and hydrogen sulfide oxidation).
Most studies seem to assess these two processes separately or by hydrodynamic modelling. While the latter helps, modelling requires continuous validation. I would be interested in (field) studies integrating both mechanisms to asses the oxygen dynamics (i.e oxygen supply vs oxygen demand).
A great example of what I am looking is:
Thanks – hope to get an answer soon
Can anyone please provide me papers on the characterization of Heavy Metals or trace elements or PTEs contents in mine water pertinent to coal mines of China and US, especially of Gondwana coals?
I'll start by describing the scenerio in which I need help. There is a coal mining site. Hundreds of trucks carry coal to the dump site every day using top-open containers. I need to calculate the volume of coal loaded in each truck at a certain checkpoint in real time using a LiDAR sensor. Basically how it should work is, the empty truck while moving slowly (around 5 kmph) will be scanned using LiDAR sensor before loading it up which will give volume V1 of the truck. Then after loading the truck, again it will be scanned while moving slowly which gives volume V2. So with V2 - V1, we have the volume of the coal contained in the truck.
Now the question is "What LiDAR sensor system can help me achieve this ?"
I have mentioned a video link to show how it should work of a company which has already implemented it. But I need to create a low cost system to do the same.
Please let me know if you think of something which might help getting closer to the solution.
In underground coal mine, an intact coal barrier is left between active and abandoned mine. Abandoned mine are flooded after long time of mining due to groundwater and water used during mining for dust suppression purpose. Width/thickness of an intact coal barrier is very critical for mine failures and to protect active mine from flooded abandoned mine. Therefore, if anyone can suggest me journal/conference paper(s) or books related to this topic that would be great.
Thank you in advance
I have researched the power field more decades. It is strange to me why distortion power is not measured, registered and pay. From my researches in drives (air conditioners, elevators, drives in coal mines), so as in lighting, the consumption of distortion power absolutely is not negligible.
Can anyone suggest me, how to use stable isotopes viz., deuterium and oxygen-18 in transport contamination modelling by the aid of Visual MODFLOW Software and the study pertinent to coal mine impact assessment of groundwater regime. Also, please share relevant papers or information.
This is area of safety research work, carrying out in underground coal mine. How to identify various risk factors and behavioural factors to analyse role of health and safety in underground coal mine.
I am working on a project related to coal mines at stream reach watershed level. Vegetation cover has been so dynamic. For example, they mine some area( vegetation loss) in 1991 then reclaimed the same area in 1993. they mine some other part of the watershed in 1994 then reclaimed 1997. I would like to measure vegetation growth with cumulative NDVIs. My idea is using yearly summer NDVIs from LandSat and calculate the cumulative NDVIs on a pixel base for different watersheds. Do I need to make any adjustment from year to year and also from Land-Sat 5 to Land-Sat 7 or Land Sat 8?
If you could help, I would greatly appreciate it
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Link provided below
Examples are: backward scenario reduction, forward scenario selection,
scenario tree construction, and clustering-based scenario reduction.
In DMC(Dense Medium Cyclone), if we use silica sand/silica fumes rather than magnetite for processing of coal, then how the media is recovered after processing?
What are the other different medias (except magnetite/Ferro silicone/silica sand or silica fume) that are used for dense medium separation of mineral / coal ?
Cover surface consists of 8-24'' dia. cobble-boulder, unknown depth. Would like to characterize known collapsed adit and hydrogeologic interaction with mine waste in the safest way possible. Thank you for your consideration.
Does anyone have a chart of the general cost per meter for wire cables (used in hoisting systems) for some diameters? It's for a simulation. Thank you very much and have a great day.
Normally researchers prefer to study drill core sample, but for an individual student it is sort of difficult to acquire core samples, in that case, is it possible to take bulk sample from any kind of mining and take a core sample from that bulk sample in lab?
In order to know the area of major fall from its impact parameters I wan to classify data in three categories like Low, Medium, High. The parameters are as follows :
Area of exposure 0-10,000sqm, Depth of cover 0-110 m, RMR 65, Roof cavability -1.5 , Roof convergence - 1.5 m,
Area of Major roof fall 0- 3400 sq m. This classification based to Indian DGMS standards it is helpful.
I have a flac3D model of coal mine. The panel is of 200*200m size. Boundary of model taken to be 200m away from boundary of the panel on all sides. Progressive face advance is being carried out alongwith caving. How can I be sure that boundary effects are not altering my stress distribution?
for a statistical study, we need to a data base including E, Poission ratio, Density, UCS, C, phi and Tensile strength of coal seams. for this aim, we search on papers and collect data one by one.
if you have similar data or refer to any references, please help us.
In underground coal mines, please give explanation impact of these parameters on roof fall in different mining methods like Bord and pillar and Longwall.
I need to classify Radarsat 2 and Alospalsar data set using Support vector machine. I have the 5 multi component scattering parameters layer stacked individually for Radarsat 2 and AlosPalsar. I have total of eight classes namely Urban, Dense Vegetation, Sparse Vegetation, Barren land, Harvested land, Dry water bodies, Water bodies, Coal mining area. To get the ROI's of barren land, coal mining area, water bodies and dry water bodies are difficult as it gives almost the same backscatter values in the surface scattering component. Are there any ways of classifying the above classes in the mentioned data sets?
In the sustainable development plan of coal mine area,How do we determine the utilization efficiency of resources in coal mining area,such as coal resources and land resources and How to measure their relationship?
How Mine height plays a role in roof fall study ? can anyone help me in providing stuff or supporting documents related mine height in coal mines in bord and pillar method.
I am in the process of deciding to update a book on mine explosions and need to start doing some more recent research to fill in the gaps left from completing my PHD. Do you have any interested parties also welcome to discuss some ideas with me.
Around coal mining regions,where there is a possibility of coal particles or carbonate or some other contamination of soil, Can all these affect organic or inorganic carbon of the soil?
Is these contamination hindered with soil carbon analysis?
The American documents describing miner's protection from the coal dust, referred to the use of grinders (shredders) for the longwall shearer; and in the coal transfer points from one conveyor to another. How big is the size of the original pieces of coal produced with the longwall shearer, and their average size?
I am looking for developing the communication link in Indian coal mine scenario. If any one work on to this field can suggest suitable path loss model for finding the suitable signals.
What is difference b/w ASTM D3172 and ASTM-D5142 methods for Proxmate analysis for coal of lignite type?
whose method is accurate and how much error between them of these two methods?
Questions in Your Topics. Available from: https://www.researchgate.net/topics?askQuestion=1&tpca=1 [accessed Mar 20, 2015].
I want to find Roof Fall Predictions in Coal mines. What parameters are required for finding Stand-Up time of Roof? I want to use Fuzzy Logic
The face of acid mine drainage treatment is changing.The costs of abatement of acid mine drainage are high, but the benefits to society and the environment are far greater in the long run.
Underground coal mine fire is a major problem faced by many countries. Not only does it reduce the amount of fossil fuel but also adds on to the risk of land subsidence in the area. So, is there any measures that can be taken to reduce or extinguish the coal mine fires so that we can save coal for future uses?
Goa in India is a mining belt and there are piles of mining wastes dumped
also vast land which are to be reclaimed by technological means.
similar waste lands must have been there in the whole world. it is to know in this direction more about the global technologies and systematic efforts done in this direction.
In the region of the Latrobe Valley, Australia, a succession of disasters and events have occurred over the past few decades within and surrounding the open cut brown coal mines, which are directly related to extreme climate events such as heavy rainfall and fires. The most impacting being fires which entered the Morwell coal mine in February 2014 and covered the township of 14,000 people in toxic smoke for a month. Other incidents have included nearby rivers breaking banks into the open cut coal mines, and numerous cracks and sinkholes occurring in surrounding areas approaching on townships. Whilst the members of the community are dependent on the industry of coal mining for employment, the industry continues to struggle to adapt to climate change. And it is the members of its community who are left to struggle and live in its smoke because of these large company's inability to mitigate and adapt. Does change start with the members of the community? Is there something communities can do, or is their fate determined by these large companies and government policy?
Aside from wind blowing on mine tailings and wasting, there are many other mining activities that can also generate dust such as the removal of vegetation and topsoil, on site blasting and drilling operations, use of crushing, dry grinding and dry screening equipment, construction activities and the driving of vehicles on access and haul roads, etc.
Any guidelines or sugggestions on testing that would be required to assess safety - what substances, what detection limits, how often?
I would greatly appreciate any key references and information about the impact of this industry and risk of fires and water catchment degradation and contamination to natural high biodiversity areas such as the Royal National Park in Australia. Thank you.