— The combined intensive mining effect of sequential-mining-process of two adjacent longwall top coal caving faces is prone to inducing disasters such as coal and gas outburst, roof caving and surface subsidence. However, it remains a big challenge to explore the mining-induced vertical stress evolution and its role played during such …
— In recent years, there are numerous papers on the groundwater environment of coal mine, mainly about the problems of mine water-irruption (Wu et al. 2014, 2015, 2016), descend funnels, land …
Keywords: pumped hydro storage, clean energy, coal mines, feasibility analysis, case study. Citation: Jiang D, Chen S, Liu W, Ren Y, Guo P and Li Z (2021) Underground Hydro-Pumped Energy Storage Using Coal Mine …
— The coal seam in the southern coal field of the Ordos Basin serves as the main aquifer, while the region is known for its high-intensity coal mining activities. The coupling effect of mine water and the strong disturbance caused by high-intensity mining have brought serious challenges to the stability of coal pillars. To address this, a formula …
— In Xinjiang Uygur, China, grass is the main plant type, ranging from tall grasslands to short grasslands in deserts. The ecological environment is extremely fragile in this area (Zuo et al., 2021a, 2021b).Underground coal mining can lead to overlying strata movements, which ultimately cause surface subsidence (Peng, 1992).The prediction …
— OVERVIEW - KARNATAKA EMTA COAL MINES LIMITED. Karnataka Emta Coal Mines Limited is an unlisted public company incorporated on 05 December, 2002. It is classified as a public limited company and is located in Bangalore, Karnataka. It's authorized share capital is INR 5.00 cr and the total paid-up capital is INR 5.00 cr.
— Karstic limestone formations in the West Mountain area are important water resources for Taiyuan City in Shanxi Province, northern China, which is also known for its large-scale coal mining production. In this study area, groundwater is not only exploited for water supply purposes but also drained because of coal mining. The process of coal …
— Mining is one of few industries that change entire landscapes, making it the source of a variety of impacts (see Bebbington et al., 2008; Mudd, 2010).These impacts are geographical in nature, as mines are unevenly distributed around the world and disproportionately affect the communities or ecosystems nearest to them (Sonter et al., …
— The room-and-pillar technique is a self-supporting mining method in which part of the ore is left unmined as pillars. To increase the mining efficiency, the pillars are later recovered partially or completely. This research aims at evaluating and comparing four methods of pillar recovery, namely, 'pocket and wing', 'open ending', 'split and fender', …
— The Supreme Court has quashed a criminal case against M/s. Karnataka Emta Coal Mines Limited (KECML) registered under Section 120-B read with Sections 409 and 420 of the Indian Penal Code (IPC) and Sections 13(1)(d) and 13(2) of the Prevention of Corruption Act, 1988 (PC Act).
Analysis of past coal and industrial transitionsy; Case studies on pathways to implement coal transitions compatible with the "well below 2°C" objective in six major coal-using economies, i.e. China, India, South Africa, Poland, Germany, and Australiay; Analysis of the impacts of coal transitions on the global coal trade.
— Operated by the Bharat Gold Mines Limited (BGML), a public sector undertaking, the KGF was the world's second deepest gold mine at a depth of 3,000 metres. The mines remained active for 121 years before it experienced an unsystematic closure on February 28, 2001. The mines were closed owing to high operational costs …
— Case Study Questions for Class 8 Science Chapter 5 Coal and Petroleum Here we are providing case study questions for CBSE Class 8 Science Chapter 5 Coal and Petroleum. Case Study Questions Question 1: Read the passage carefully and answer the following questions. In the light of the availability of various resources in nature, natural …
— This paper presents a case of an opencast coal mine "Parsa East Kanta …
— China has the largest coal production in the world due to abundant resource requirements for economic development. In recent years, the proportion of opencast coal mine production has increased significantly in China. Opencast coal mining can lead to a large number of environmental problems, including air pollution, water pollution, and …
— The elevation of the A7 coal seam outcrop is 1400 m, 20 ~ 25 m from A9. The thickness of coal seams A7 and A9 is approximately 2 m. The thickness of coal seams A10 and A11 is less than 0.8 m, and the spacing between two layers is small. After nearly 40 years of mining in five coal mines, the extent of coal seam mining has reached 200 m.
In this study, the impacts of mining iron ore particularly resulting from open-cast mining are covered with special reference to environmental issues (such as Air, Water, Soil), and health hazards on the population of the mining region. The Study area is confined to the Ballari District of Karnataka State. III.
— Model based reliability analysis of shovel – dumper system's mechanical failures used in the surface coal mine: a case study N. S. Harish Kumar Department of Mining Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, Karnataka, India Correspondence harishkumarns11@gmail
In this compendium of over fifty case studies, the coal industry demonstrates that practical progress is being made in many areas: communities and people; resource stewardship and environmental impacts; management processes and systems; and along the value chain, in co-operation with customers and suppliers.
— To study the impact of surface coal mining activities in a part of JCF, a multi-temporal analysis of Landsat (TM and OLI/TIRS) data has been undertaken for the years between 2006 and 2016.
— The empirical relationships were given to estimate the heights of the caving and fractured zones induced by mining. A case study for coal mining beneath a water-bearing alluvium was given. The finite element method, physical simulation and field monitoring were applied to analyze the mining-induced strata failure and hydraulic …
— Ecological risk assessment of mercury and other heavy metals in soils of coal mining area: A case study from the eastern part of a Jharia coal field, India ... along three soil profiles (0–10, 10–20, and 20–30 cm) in a coal mining area (Jharkhand, India) inhabited by economically marginalized dense population. Higher toxic metal ...
— Introduction. Coal is one of the most abundantly available fossil fuels …
— Young, Meriel, Walton, Gabriel and Holley, Elizabeth (2019): "Factors predictive of roof instability in addition to the existing CMRR criteria at two case study coal mines", International Journal of Coal Geology, vol. 213, pp. 103255.
With further exploitation, the whole Coalfield was evolved into moderate and heavy ecological vulnerability area, and the coal resources mining was a key factor in this process. The cluster analysis showed that the spatial distribution of the ecological vulnerability in the study area had reasonable clustering characteristics.
— Firstly, taking Jharia coal-fi eld as a case study, the parameters/criteria affecting the environment have been identi fi ed. The parameters that are the most affected due to mining are air,
— Investigating the effects of rainfall and groundwater on coal mine waste dump stability: a case study. Journal of Mines, Metals and Fuels, 69(7), 233–240. https ... Dhanbad, Dated- 16.02.2020, Subject: Guidelines for Scientific Study under regulation 106 Coal Mines Regulations, 2017. FLAC/Slope Users' Guide (2011): Command Reference, …
The Goa mining case is one of the key matters of mining irregularities with respect to iron and manganese ore mining in India, that initially followed the investigation and revelations by
This area was taken as the focus of field work and as a community case study. A hundred years of coal mining in the Mpumalanga Highveld, South Africa's most important coalfield, has imposed a complicated "coal dynamic" on the area, resulting in extensive environmental and social externalities. This dynamic includes the mining itself, the ...
This case study focuses on the costs of the environmental and social effects of coal mining in South Africa, undertaken for export to the Netherlands. Coal mining imposes many external costs on its surroundings and the people who live in it. Some of these can be quantified by estimates, others are difficult to estimate. Coal mining is
— Coal mining and related activities provide huge energy resource. Coal …
— The Ramgarh case study brings out four key observations that are important for understanding just transition in India. First, the dependence on coal mining for income is signifi cantly high. Out of the …
— Karnataka High Court had quashed the Lokayukta criminal proceedings in 2011 and had cleared Kumaraswamy in the Janathakal mining case. Last year in September, the Supreme Court ordered Kumaraswamy to face trial in the 2007 Janthakal case. Lokayukta Special Investigation Team arrested Vinod Goel, owner of Janathakal …
— The coal samples used in this laboratory experiment were obtained from the Ji 15-31030 working face (buried depth of 1050 m) of the No. 12 mine of the China Pingdingshan Mining Group (Fig. 1).Intact coal blocks (greater than 20 cm in length, width, and height) were selected.
— COAL MINING – A CASE STUDY . Lokhande R D a, Murthy V M S R b, Singh K B c. a Scientist, National Institute of Rock Mechanics, KGF, Karnataka, India . b Professor, Department of Mining ...
— In case of opencast coal mining, the first step is to remove the overburden economically to expose the underlying coal for excavation and later on needs to be handled safely. Increased level of overburden/waste rock production is also one of the major problems encountered by opencast coal mining as it causes environmental pollution …
— Zhucun coal mine is located north of the Jiaozuo coalfield in Henan Province, China, as shown in Fig. 1.The coal seam mined in the mine is coal seam 1 −5 of the Carboniferous Taiyuan Formation. Decades of mining have been exhausting the No. 1 −5 coal seam. Mining the remaining coal resources of the coal seam with complex …
