scholarly journals Formasi Sosial di Desa Kerta Buana: Transformasi dari Masyarakat Pertanian menjadi Masyarakat Pertambangan

2020 ◽  
Vol 22 (3) ◽  
Author(s):  
Robert Siburian
Keyword(s):  
Coal Mining ◽  
Mining Area ◽  
Open Pit ◽  
Open Pit Mining ◽  
Home Garden ◽  
Mining Method ◽  
Social Formation ◽  
Economic Activities ◽  
Irrigated Rice ◽  
Coal Mining Area

Community in Kerta Buana village developed by Indonesia government in 1980 through transmigration program were farmers. Meanwhile, farmland which received of transmigrant that time was 1¾ hectare (ha); one hectare of the land is for tidally irrigated rice, and ¾ hectare of the land is for dryland crop. Biside that, each transmigrant also received ¼ hectare land for home garden. Through the land which was given by government to transmigrants, before 2000, Kerta Buana village could be created as centre of paddys for Tenggarong Seberang subdistrict result of some paddyfield which made of transmigrants. However, effect of coal mining expantion and change of mining method from underground pit mining to open pit mining, center of paddys term move slowly become center of mine holes, it consequence so many mine holes are open because they are not reclaimed. Social formation of the community also changes from agriculture activity whose ever to dominate activity there to activity is whole depent coal mining activity dynamic in Kerta Buana village and its surrounding. This paper tries to explain social formation dynamic happening there as the attendance of mining business who sponsored by government through some permits given to many companies which able to change transmigration area with agriculture activity becoming coal mining area with varians of economic activities together.      

scholarly journals Response of Maize Grown on Overburden Soil in a Coal Mining Area without Top Soil to Various Compost Sources

2016 ◽  
Vol 20 (2) ◽  
pp. 95
Author(s):  
Erry Purnomo
Keyword(s):  
Soil Fertility ◽  
Coal Mining ◽  
Maize Yield ◽  
Mining Area ◽  
Application Rate ◽  
Open Pit ◽  
Kitchen Waste ◽  
Coal Mining Area ◽  
Top Soil ◽  
Overburden Soil

Soil in Kalimantan Island is considered infertile. To obtain a reasonable crop yield a high input fertilizer package should be applied. The situation will be worsening when an open pit system of coal mining adopted. Failure in re-arranging the soil layers can result in decreasing soil fertility compared to original soil prior to mining. This study aimed to determine the improvement of soil fertility of a disposal without top soil by using composts from various sources, namely, the public garbage pile, commercial compost, and compost from kitchen waste. The experiment was conducted in a disposal area of a coal mining of PT AI. A series of application rate of compost was set. This was 0, 5, 10, and 20 tonne compost ha-1. A plot with top soil was involved for another control. Maize was selected as the plant indicator to evaluate the effect of treatments applied. It can be concluded that application of composts to reclamation area without top soil significantly improve soil fertility. Among the composts used, K-compost (compost from kitchen waste) was the best in improving soil fertility. There were some characters of the compost that had not enough to support maize yield. These were P, K, and pH. Addition of P and K fertilizers and lime material are needed. Of the equation coefficients obtained, the b coefficient of equation belong to K-compost was higher than of the others.

scholarly journals Technical Study Of Mine Dewatering System In Coal Mining

PROMINE ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 28-33
Author(s):  
A.A Inung Arie Adnyano ◽  
Muhammad Bagaskoro
Keyword(s):  
Coal Mining ◽  
Water Discharge ◽  
Mining Area ◽  
Open Pit ◽  
Open Pit Mining ◽  
Water Control ◽  
Mining System ◽  
Control Effort ◽  
Mine Dewatering ◽  
Daily Discharge

Coal mining by PT. Tambang Bukit Tambi uses an open pit mining system where one of the factors that can affect mining is water that entering the mining area, so water control must be carried out, one of the ways is by using mine dewatering system. The purpose of this study is 1) To know the debit of water entering the mining area. 2) To design a pumping plan 3) To create an ideal sump design for handling water that entering the mining area. Based on the research, the daily discharge is 32,243.36 m3 / day where the water discharge that can be released by 2  Kenflo XA 125 / 40B pumps is 640 m3 / hour in 50.38 hours and the water control effort is made a sump that must accommodate water amounting to 19,427.26 m3 and after the calculation is obtained a trapezoid-shaped sump design with size length and surface width of 63.7 m, length and width of the base of the sum of 60.9 m and depth of 5 meters.

scholarly journals Concept and Practice of Open-pit Mining Area Restoration and Reuse --- Taking an Open-pit Coal Mining Area in Datong, Shanxi as an Example

2020 ◽  
Vol 145 ◽  
pp. 02014
Author(s):  
Huang Jiayin ◽  
Hu Baoan ◽  
Tan Xiangjun ◽  
Cheng Jin ◽  
Li Long
Keyword(s):  
Coal Mine ◽  
Geographical Location ◽  
Mining Area ◽  
Cultural Tourism ◽  
Open Pit ◽  
Open Pit Mining ◽  
Mining Areas ◽  
Coal Mining Area ◽  
Rural Revitalization ◽  
Mining Coal

The restoration of open-pit mining coal mine areas is imminent, and it is of great significance to put forward a set of reasonable restoration concepts. According to the geographical location and economic conditions of the mining areas, this paper combines multiple restoration concepts and measures such as “fundamental reforestation”, “near-natural restoration”, “introduction of agricultural and forestry industries” and “development of cultural tourism in abandoned land” in a scientific way, the combination has been successfully applied in the restoration and comprehensive utilization project in an open-pit coal mine area in Datong, Shanxi, China. This concept realizes the reuse of abandoned open-pit coal mines and closely follows the national strategy of poverty alleviation and rural revitalization, in pursuit of the national vision of “clear waters and green mountains are mountains of gold and silver.”

scholarly journals Response of nematode communities to reclamation of agricultural soils following degradation through brown coal strip-mining processes

2014 ◽  
Vol 51 (1) ◽  
pp. 53-62 ◽  
Author(s):  
Y. Chen ◽  
T. Mekete ◽  
A. Dababat ◽  
M. Daub ◽  
Z. Cao ◽  
...  
Keyword(s):  
Brown Coal ◽  
Agricultural Soils ◽  
Recovery Process ◽  
Mining Area ◽  
Nematode Community ◽  
Open Pit ◽  
Open Pit Mining ◽  
Original Structure ◽  
Coal Mining Area ◽  
The Impact

AbstractThe study assessed the impact on the soil nematodes during the first 3-years after reclamation of a brown coal mining area. Samples were taken from 5 fields: 1 year before excavation, right at the beginning of reclamation (Yr 0), and in fields 1, 2 and 3 years after reclamation. A total of 31 families of nematodes were recorded and the nematode community of field Yr 0 was significantly different from that of other four sampling sites. Nematode abundance decreased after excavation and then began to return to initial community levels at each of the three reclamation sites with bacterivore nematodes recovering faster than the fungivores, omnivore-predators or the plant parasites. A gradual but consistent regeneration of the nematode community to its original structure was seen from the beginning of sampling and this recovery process was detectable over the three successive years of experimentation. Open-pit mining, therefore, drastically disturbed nematode community structure initially but the community was able to recover and stabilized quickly after reclamation.

scholarly journals Evaluation of Ecological Stability in Semi-Arid Open-Pit Coal Mining Area Based on Structure and Function Coupling during 2002–2017

2021 ◽  
Vol 13 (24) ◽  
pp. 5040
Author(s):  
Xinhui Li ◽  
Shaogang Lei ◽  
Ying Liu ◽  
Hang Chen ◽  
Yibo Zhao ◽  
...  
Keyword(s):  
Coal Mining ◽  
Mining Area ◽  
Open Pit ◽  
State Transitions ◽  
Mining Activities ◽  
Ecological Stability ◽  
Mining Areas ◽  
Coal Mining Area ◽  
Positive State ◽  
Semi Arid

Open-pit coal mining plays an important role in supporting national economic development; however, it has caused ecological problems and even seriously impacted regional ecological stability. Given the importance of maintaining ecological stability in semi-arid coal mining areas, this study used a coupling coordination degree approach based on the structural and functional state transition model (SFSTM) to evaluate the spatio–temporal variation of ecological stability from 2002 to 2017 by using MODIS and Landsat datasets in the semi-arid open-pit coal mining area. Besides, random points were created for different ecological stability levels (containing natural areas, coal mining areas, and reclamation areas) and segment linear regression was conducted to determine the structural change threshold for negative state transitions based on mining and positive state transitions based on reclamation. Furthermore, the impact factors of ecological stability were analyzed. Results showed that ecological stability fluctuated significantly over 16 years, showing a trend of first increasing and then decreasing. It was found that precipitation and temperature were the key natural factors affecting ecological stability, and mining activities constituted the dominant factor. The average perturbation distances to ecological stability from mining activities in the west, southwest, and east mining groups were 7500, 5500, and 8000 m, respectively. SFSTM is appliable to the coal mining ecosystem. Quantitative models of ecological stability response can help resolve ambiguity about management efficacy and the ecological stability results facilitate iterative updating of knowledge by using monitoring data from coal mining areas. Moreover, the proposed ecological structural threshold provides a useful early warning tool, which can aid in the reduction of ecosystem uncertainty and avoid reverse transformations of the positive state in the coal mining areas.

scholarly journals Managing and Reforesting Degraded Post-Mining Landscape in Indonesia: A Review

Land ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 658
Author(s):  
Pratiwi ◽  
Budi H. Narendra ◽  
Chairil A. Siregar ◽  
Maman Turjaman ◽  
Asep Hidayat ◽  
...  
Keyword(s):  
Acid Mine Drainage ◽  
Success Rate ◽  
Coal Mining ◽  
Best Management Practices ◽  
Mine Drainage ◽  
Forest Area ◽  
Tree Planting ◽  
Open Pit ◽  
Open Pit Mining ◽  
Acid Mine

Tropical forests are among the most diverse ecosystems in the world, completed by huge biodiversity. An expansion in natural resource extraction through open-pit mining activities leads to increasing land and tropical forest degradation. Proper science-based practices are needed as an effort to reclaim their function. This paper summarizes the existing practice of coal mining, covering the regulatory aspects and their reclamation obligations, the practices of coal mining from various sites with different land characteristics, and the reclamation efforts of the post-mining landscapes in Indonesia. The regulations issued accommodate the difference between mining land inside the forest area and outside the forest area, especially in the aspect of the permit authority and in evaluating the success rate of reclamation. In coal-mining practices, this paper describes starting from land clearing activities and followed by storing soil layers and overburden materials. In this step, proper handling of potentially acid-forming materials is crucial to prevent acid mine drainage. At the reclamation stage, this paper sequentially presents research results and the field applications in rearranging the overburden and soil materials, controlling acid mine drainage and erosion, and managing the drainage system, settling ponds, and pit lakes. Many efforts to reclaim post-coal-mining lands and their success rate have been reported and highlighted. Several success stories describe that post-coal-mining lands can be returned to forests that provide ecosystem services and goods. A set of science-based best management practices for post-coal-mine reforestation is needed to develop to promote the success of forest reclamation and restoration in post-coal-mining lands through the planting of high-value hardwood trees, increasing trees’ survival rates and growth, and accelerating the establishment of forest habitat through the application of proper tree planting technique. The monitoring and evaluation aspect is also crucial, as corrective action may be taken considering the different success rates for different site characteristics.

Blood markers among residents from a coal mining area

2020 ◽  
Vol 28 (2) ◽  
pp. 1409-1416
Author(s):  
Ana Paula Bigliardi ◽  
Caroline Lopes Feijo Fernandes ◽  
Edlaine Acosta Pinto ◽  
Marina dos Santos ◽  
Edariane Menestrino Garcia ◽  
...  
Keyword(s):  
Coal Mining ◽  
Mining Area ◽  
Coal Mining Area
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