scholarly journals Utilization Study of Void Mine For Sustainable Environment of The Limestone Mining Sector at PT Semen Baturaja (Persero) Tbk

2019 ◽  
Vol 3 (2) ◽  
pp. 54-59
Author(s):  
Hisni Rahmi ◽  
Didik Susetyo ◽  
Restu Juniah
Keyword(s):  
Land Reclamation ◽  
Pollution Index ◽  
Quality Standards ◽  
Open Pit ◽  
Open Pit Mining ◽  
Mining Activities ◽  
Raw Water ◽  
Treatment Needs ◽  
Mining Sector ◽  
Sustainable Environment

Event open-pit mining methods in the exploitation of limestone by PT Semen Baturaja (Persero) Tbk cause depletion of water, air, and soil. At the end of mining activities will leave ex-mine land in the form of void and non void (empty land). Reclamation and Postmining must be carried out by the company according to the mandate of Government Regulation No. 78 year 2010. Reclamation and post-harvest activities on ex-non void mines can be revegetation activities, while void can be used as reservoirs for raw water sources. The aim is to maintain the sustainability of natural resources and water in the limestone mining environment. The research aims to determine the condition of void water produced from limestone mining activities for a sustainable environment. The method used in this study is using the pollution index method. The results showed that the water in the sump inlet and quarry outlet experienced mild pollution. Pollution index at the location of the limestone mine sump inlet worth 2.14 and for oulet quarry worth 2.07. This shows that mine void water is not feasible to be used as raw water, so water treatment needs to be done so that it meets the established quality standards. If void water comply the prescribed quality standards, environmental sustainability in the limestone mining sector can be achieved during during the life of the mine, post mining, until after the post-mining period.

Coal mining-disturbed land reclamation laws

2020 ◽  
pp. 15-26
Author(s):  
T. V. Galanina ◽  
M. I. Baumgarten ◽  
T. G. Koroleva
Keyword(s):  
Large Scale ◽  
Land Reclamation ◽  
Mining Industry ◽  
Development Program ◽  
Soil Disturbance ◽  
Open Pit ◽  
Open Pit Mining ◽  
Disturbed Land ◽  
Critical Problems ◽  
Production Output

Large-scale mining disturbs wide areas of land. The development program for the mining industry, with an expected considerable increase in production output, aggravates the problem with even vaster territories exposed to the adverse anthropogenic impact. Recovery of mining-induced ecosystems in the mineral-extracting regions becomes the top priority objective. There are many restoration mechanisms, and they should be used in integration and be highly technologically intensive as the environmental impact is many-sided. This involves pollution of water, generation of much waste and soil disturbance which is the most typical of open pit mining. Scale disturbance of land, withdrawal of farming land, land pollution and littering are critical problems to the solved in the first place. One of the way outs is highquality reclamation. This article reviews the effective rules and regulations on reclamation. The mechanism is proposed for the legal control of disturbed land reclamation on a regional and federal level. Highly technologically intensive recovery of mining-induced landscape will be backed up by the natural environment restoration strategy proposed in the Disturbed Land Reclamation Concept.

Activities of Musan Mine observed by Sentinel-1 Coherence Imagery

2020 ◽  
Author(s):  
Jihyun Moon ◽  
Heejeong Seo ◽  
Hoonyol Lee
Keyword(s):  
Time Series ◽  
Satellite Images ◽  
European Space Agency ◽  
Open Pit Mine ◽  
Mining Activity ◽  
Open Pit ◽  
Open Pit Mining ◽  
Series Data ◽  
Mining Activities ◽  
Mining Site

<p>Musan mine in North Korea is the largest open-pit iron mine in Asia with the proved reserves of about 2.06 billion tons and more than 9 square kilometers. Open-pit mining is one of the surface mining technique extracting minerals from the surface. Vegetation is rarely distributed at the mining site because the topsoil is removed and the ore is mined directly from the surface. Therefore, it is effective to observe surface displacement at the mining site using Interferometric Synthetic Aperture Radar (InSAR) technology. InSAR coherence detects random surface change that measures the activity or stability of the interferometric phase of InSAR data. High coherence will be maintained on the surface where there is no movement and only surface scattering. On the other hand, the surface where there is a lot of movement and volumetric scattering has low coherence value. Therefore, using 12-days InSAR coherence images from Sentinel-1 satellites, for example, it is possible to analyze how active the open-pit mine is during the 12 days. Sentinel-1A satellite images were acquired from June 11, 2015 to May 24, 2016, followed by Sentine-1B satellite images from September 27, 2016 to April 21, 2019. A total of 102 SAR images were downloaded from European Space Agency (ESA) portal. There is a gap between May 24 and September 27, 2016 due to the transition of the data acquisition plan. Over 100 12-days coherence data were obtained by applying InSAR. Stable spots and target spots were selected through average and standard deviation of the entire coherence time series data. Coherence values include not only the mining activity but also the effects of perpendicular baseline, temporal baseline, and weather. Therefore, NDAI (Normalized Difference Activity Index) was newly defined to remove the noise and only the coherence value due to the influence of the mining activity was extracted. The degree of activities can be observed by the time series coherence and NDAI images. This study needs other references related to mining activities in order to analyze the mining activities in more detail. This method can be applied to other open-pit mine.</p>

scholarly journals Evaluating the Feasibility of Illegal Open-Pit Mining Identification Using Insar Coherence

2020 ◽  
Vol 12 (3) ◽  
pp. 367 ◽  
Author(s):  
Shunyao Wang ◽  
Xiaoping Lu ◽  
Zhenwei Chen ◽  
Guo Zhang ◽  
Taofeng Ma ◽  
...  
Keyword(s):  
Large Scale ◽  
Field Research ◽  
Open Pit ◽  
Open Pit Mining ◽  
Environmental Harm ◽  
Optical Remote Sensing ◽  
Mining Activities ◽  
Mining Sites ◽  
Illegal Mining ◽  
Adverse Weather

Illegal open-pit mining causes environmental harm and undermines sustainable development. Conventional monitoring approaches such as field research and unmanned aerial vehicle (UAV) imagery are time-consuming and labor-intensive, making large-scale monitoring difficult. In comparison, optical remote sensing imagery can cover large areas but is vulnerable to adverse weather conditions and is not sensitive to vertical ground changes. As open-pit excavation causes sudden changes in the scattering properties of ground objects along with dramatic vertical deformation, we evaluated the feasibility of using interferometric synthetic aperture radar (InSAR) coherence to identify illegal mining activities. Our method extracts the coherence coefficient from two SAR images taken on different dates, applies thresholding and filtering to extract a decorrelation map, and then overlays this with legal mining boundaries and optical satellite images to identify illegal mining activities. For three test cases in southwestern Inner Mongolia, China, 49 legal mining sites were correctly detected (with an accuracy of 90.74%) as well as six illegal mining sites. Ground truthing confirmed the presence of ongoing activity at one of these sites. Our study shows that InSAR coherence is suitable for the identification of mining activities, and our method provides a new approach for the detection and monitoring of illegal open-pit mining.

scholarly journals Stability study of open mine slopes at pit 22 GN PT Kitadin Site Embalut, Kutai Kartanegara Regency, East Kalimantan Province

2021 ◽  
Vol 24 (1) ◽  
pp. 47-56
Author(s):  
Tandidatu Deny ◽  
◽  
Sundek Hariyadi ◽  
Keyword(s):  
Safety Factor ◽  
Stability Study ◽  
Open Pit ◽  
Open Pit Mining ◽  
Mining Activities ◽  
East Kalimantan ◽  
Stability Of Slope ◽  
The Stability ◽  
Excavation Site ◽  
Highwall Slope

The stability of slope, both on the slope of work and the final slope, is a very important aspect of slope stability, both on the slope of work and the final slope in open pit mining activities. The inconsistency of the slopes will result in the collapse of rocks around the excavation site. This happens because the condition of the rock when it has not been excavated is generally balanced. However, due to the discontinuous patterns that occur other than naturally and also due to the mining activities such as excavation, blasting and others, cause a reduction in the retaining force of the rock on the slope results in the equilibrium of the force tends to shift and is not balanced. Study of the stability of the open pit highwall slope at PIT 22 GN PT Kitadin Site Embalut, Kutai Kartanegara Regency, East Kalimantan Province was carried out with the aim to know the rock characteristics, to calculate slope geometry stable safety factors, and to recognize the type of landslide using a bishop method. The results of the modeling consist of several heights and slopes, as well as angles that is formed. Section AA’ has a safety factor value of 1.387, section BB has a safety factor of 1.482, section BB' has a safety factor value of 1.390, section DD' has a safety factor value of 1.318, section EE has a safety factor value of 2,381, section FF' has a safety factor value of 2.426, section GG' has a safety factor value of 2.424, section HH 'has a safety factor value of 2.339.

scholarly journals Justification of disturbed land reclamation after open pit mining of kimberlite pipes in the Republic of Sakha (Yakutia)

2020 ◽  
pp. 65-69
Author(s):  
I. V. Zenkov ◽  
◽  
A. S. Morin ◽  
V. N. Vokin ◽  
E. V. Kiryushina ◽  
...  
Keyword(s):  
Land Reclamation ◽  
Open Pit ◽  
Open Pit Mining ◽  
Disturbed Land ◽  
The Republic

scholarly journals Mapping Annual Land Disturbance and Reclamation in a Surface Coal Mining Region Using Google Earth Engine and the LandTrendr Algorithm: A Case Study of the Shengli Coalfield in Inner Mongolia, China

2020 ◽  
Vol 12 (10) ◽  
pp. 1612 ◽  
Author(s):  
Wu Xiao ◽  
Xinyu Deng ◽  
Tingting He ◽  
Wenqi Chen
Keyword(s):  
Inner Mongolia ◽  
Land Reclamation ◽  
Underground Mining ◽  
Surface Mining ◽  
Mining Area ◽  
Google Earth ◽  
Open Pit ◽  
Open Pit Mining ◽  
Landsat Images ◽  
Google Earth Engine

The development and utilization of mining resources are basic requirements for social and economic development. Both open-pit mining and underground mining have impacts on land, ecology, and the environment. Of these, open-pit mining is considered to have the greatest impact due to the drastic changes wrought on the original landform and the disturbance to vegetation. As awareness of environmental protection has grown, land reclamation has been included in the mining process. In this study, we used the Shengli Coalfield in the eastern steppe region of Inner Mongolia to demonstrate a mining and reclamation monitoring process. We combined the Google Earth Engine platform with time series Landsat images and the LandTrendr algorithm to identify and monitor mining disturbances to grassland and land reclamation in open-pit mining areas of the coalfield between 2003 and 2019. Pixel-based trajectories were used to reconstruct the temporal evolution of vegetation, and sequential Landsat archive data were used to achieve accurate measures of disturbances to vegetation. The results show that: (1) the proposed method can be used to determine the years in which vegetation disturbance and recovery occurred with accuracies of 86.53% and 78.57%, respectively; (2) mining in the Shengli mining area resulted in the conversion of 89.98 km2 of land from grassland, water, etc., to barren earth, and only 23.54 km2 was reclaimed, for a reclamation rate of 26.16%; and (3) the method proposed in this paper can achieve fast, efficient identification of surface mining land disturbances and reclamation, and has the potential to be applied to other similar areas.

scholarly journals Diagnosis about iron ore mine haul roads in the Quadrilátero Ferrífero: Itabira Complex case

2014 ◽  
Vol 67 (4) ◽  
pp. 421-429 ◽  
Author(s):  
Maíra dos Santos Reis ◽  
Waldyr Lopes de Oliveira Filho ◽  
Ely Oliveira ◽  
Gladsney Pena
Keyword(s):  
Iron Ore ◽  
Open Pit ◽  
Complex Case ◽  
Open Pit Mining ◽  
Mining Activities ◽  
Mining Company ◽  
Iron Ore Mine ◽  
Quadrilátero Ferrífero ◽  
Haul Road ◽  
Design Construction

Although mine haul roads only provide support for mining activities, their role can be quite significant in any effort to optimize transportation with trucks in open pit mining. In 2009, an inventory about the design, construction and maintenance conditions of these structures in mines in the Quadrilátero Ferrífero was undertaken through a partnership between a large mining company and UFOP. Although the conditions of the roads could be considered broadly satisfactory, several points with potential for improvement were observed. This partnership was recently resumed on enlarged bases for an upgrade, but with a quantitative approach and in a representative mine. The report of this mine haul road diagnosis with a feedback on how we can do more and better for mine haul roads are presented in this work.

Socially responsible mining using project stakeholder identification and management

2017 ◽  
Vol 8 (2) ◽  
pp. 151-168
Author(s):  
Samuel Famiyeh
Keyword(s):  
West Africa ◽  
Environmental Protection Agency ◽  
Stakeholder Management ◽  
Open Pit ◽  
Open Pit Mining ◽  
African Countries ◽  
Mining Sector ◽  
Content Type ◽  
Key Stakeholders ◽  
Mining Project

Purpose The aim of this paper is to conduct an initial exploratory investigation to systematically identify and classify the stakeholders associated with the mining sector in West Africa into key and non-key stakeholders through the use of the comprehensive project stakeholder management tools and processes. The results can be used as an initial identification and classification of stakeholders associated with a typical mining project and can also be used as a basis for confirmation analysis to develop further knowledge and an improved understanding of the management of multiple stakeholders in mining sector projects. Design/methodology/approach This exploratory work used mine managers from West Africa, asking them to identify stakeholders that are of importance to a typical open pit mining project and also to make some objective assessments of their attitudes and influence of the stakeholders identified. From this, a stakeholder power/interest grid was developed to classify stakeholders into key and non-key stakeholders. Findings The findings present an initial exploratory result indicating that the key stakeholders for a mining project are the Environmental Protection Agency, Minerals Commission, Geological Survey Department, Member of Parliament, the Ministry in charge of mining, Forestry Commission, farmers, Lands Commission, non-governmental organizations, Department of Feeder Roads, traditional chiefs, district or municipal assembly and youth associations within the concession area. Research limitations/implications The research was limited to only respondents working in the mining sector in three West African countries. Practical implications Practically, this study highlights for mining companies and operators, some preliminary understanding of stakeholders that are critical for engagements to be successful in their operations. Social implications This study, essentially, reveals the importance of the various stakeholder groups interested in a mining project and the level of influence. Originality/value This study contributes to the debate on project stakeholder management in the mining sector, especially from a developing country’s point of view.

scholarly journals Analysis of Occupational Accidents in the Spanish Mining Sector in the Period 2009–2018

2021 ◽  
Vol 18 (24) ◽  
pp. 13122
Author(s):  
Lluís Sanmiquel ◽  
Marc Bascompta ◽  
Josep M. Rossell ◽  
Hernan Anticoi
Keyword(s):  
Underground Mining ◽  
Risk Index ◽  
Mining Industry ◽  
Incidence Rates ◽  
Open Pit ◽  
Occupational Accidents ◽  
Open Pit Mining ◽  
Mining Sector ◽  
High Incidence ◽  
Processing Plants

Occupational accidents in the Spanish mining industry have been substantially reduced over the last decades. However, the incidence rate shows higher values than other leading mining countries. In this regard, the research carried out reveals the factors influencing the high incidence rates of the Spanish mining sector, based on three scenarios: underground mining (UG), quarries and open pit mining (OP) and mineral processing plants (PP). The three most common types of accident for each scenario have been determined, considering the accidents in Spain between 2009 and 2018. The analysis also includes the main deviations, and physical activities that the injured worker was carrying out at the time of the accident. Besides, a model to predict the number of accidents based on the lost working days is also presented together with the incidence and severity risk index adjusted by the number of employees and their worked hours, respectively, in each scenario. These finding can be relevant to define the most effective measures and policies to reduce the number of accidents in the mining sector.

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