Environmental evaluation for sustainable development of coal mining in Qijiang, Western China

Si, Hu; Bi, Haipu; Li, Xiaohong; Yang, Chunhe

doi:10.1016/j.coal.2009.11.004

Cited by 94 publications

(46 citation statements)

References 8 publications

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“…In 2010, about 3.24 and 3.12 billion tons of coal were produced and consumed, respectively, which accounted for 48.3 and 48.2% of the total in the world (National Bureau of Statistics of China 2012). Unfortunately, the coal mining is also one of the largest eco-damaging activities which has the potential to destroy flora and fauna, breach groundwater system and contaminate soil, air, and water in the surrounding areas (Driussi and Jansz 2006;Li and Zhou 2006;Si et al 2010). For example, 63,000 hm 2 of subsidence area and 69,000 hm 2 of erosion area were caused by coal mining in 2010.…”

Section: Introductionmentioning

confidence: 99%

Environmental management zoning for coal mining in mainland China based on ecological and resources conditions

Geng

Fan

Wang

et al. 2017

Environ Monit Assess

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The purpose of this research is to establish an environmental management zoning for coal mining industry which is served as a basis for making environmental management policies. Based on the specific impacts of coal mining and regional characteristics of environment and resources, the ecological impact, water resources impact, and arable land impact are chose as the zoning indexes to construct the index system. The ecological sensitivity is graded into three levels of low, medium, and high according to analytical hierarchy processes and gray fixed weight clustering analysis, and the water resources sensitivity is divided into five levels of lower, low, medium, high, and higher according to the weighted sum of sub-indexes, while only the arable land sensitive zone was extracted on the basis of the ratio of arable land to the county or city. By combining the ecological sensitivity zoning and the water resources sensitive zoning and then overlapping the arable-sensitive areas, the mainland China is classified into six types of environmental management zones for coal mining except to the forbidden exploitation areas.

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Section: Introductionmentioning

confidence: 99%

Environmental management zoning for coal mining in mainland China based on ecological and resources conditions

Geng

Fan

Wang

et al. 2017

Environ Monit Assess

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“…The effects of these problems are especially prominent in the ecologically vulnerable areas of western China (Si et al, 2010;Ding et al, 2014). Many small and medium-sized coal mines in this area use room and pillar mining method and have a low mining rate (Jiang et al, 2015), leading to abandonment of the coal resources in underground.…”

Section: Introductionmentioning

confidence: 99%

Roadway backfill method to prevent geohazards induced by room and pillar mining: a case study in Changxing coal mine, China

Zhou

Meng

Zhang

et al. 2016

Nat. Hazards Earth Syst. Sci.

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Abstract. Coal mines in the western areas of China experience low mining rates and induce many geohazards when using the room and pillar mining method. In this research, we proposed a roadway backfill method during longwall mining to target these problems. We tested the mechanical properties of the backfill materials to determine a reasonable ratio of backfill materials for the driving roadway during longwall mining. We also introduced the roadway layout and the backfill mining technique required for this method. Based on the effects of the abutment stress from a single roadway driving task, we designed the distance between roadways and a driving and filling sequence for multiple-roadway driving. By doing so, we found the movement characteristics of the strata with quadratic stabilization for backfill mining during roadway driving. Based on this research, the driving and filling sequence of the 3101 working face in Changxing coal mine was optimized to avoid the superimposed influence of mining-induced stress. According to the analysis of the surface monitoring data, the accumulated maximum subsidence is 15 mm and the maximum horizontal deformation is 0.8 mm m −1 , which indicated that the ground basically had no obvious deformation after the implementation of the roadway backfill method at 3101 working face.

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“…Abandoned mines contaminate drainage water, soil, air and ecologic variety (Bell et al 2001;Bhattacharya et al 2006;Ribeiro et al 2010;Si et al 2010). Pollution of drainage water is continuously generated and dispersed into the area downstream of the mine (Oh and Lee 2011).…”

Section: Introductionmentioning

confidence: 99%

Change detection and visualization of acid mine lakes using time series satellite image data in geographic information systems (GIS): Can (Canakkale) County, NW Turkey

Yücel

Baba

2014

Environ Earth Sci

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Can, a county in the province of Canakkale, is one of the most prominent coal mining districts in Turkey. Many mining companies have been operating coal deposits for power generation and district heating in this region since 1980. Generally, small and medium-scale mining companies operate for short periods and abandon the operational land without providing any rehabilitation. Human intervention in the natural structure and topography of the earth surface causes large holes and deterioration in these areas. Artificial lakes occur because of surface discharge and underground leakage into abandoned open pit mines with high lignite sulfur content (0.21-14.36 wt %). Furthermore, these lakes gain acidic character due to acid generation from pyrite oxidation. Acid mine lakes are highly acidic (pH \ 3.05) and have elevated concentrations of SO 2À 4 , Fe and some metals. The main objective of this study is to evaluate the environmental conditions and demonstrate the development of a monitoring system for their possible changes in the acid mine lakes of the open cast lignite mining area on a regional scale. For this purpose, the data received from remote sensing satellites were used. Areal change detection and perimeter changes of nine acid mine lakes caused by coal mining companies in Can from 1977 to 2011, were determined using Landsat, Quickbird and Worldview satellite images. As a case study, an area of 9 km 2 was chosen for the variety of acid mine lakes. Using GIS software, satellite images were analyzed in time series, borders of acid mine lakes were digitized and converted into vector data format. At this stage, prior to the digitization, in order to create contrast on the satellite images, ''stretch type'' and ''stretch values'' were changed. The areal and perimeter changes were computed and presented via tables and graphics. In addition, thematic maps of the acid mine lakes were created and visualized. The results show that the number of acid mine lakes increased and these caused environmental risks due to their hydrochemical properties and areal increments.

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Environmental evaluation for sustainable development of coal mining in Qijiang, Western China

Cited by 94 publications

References 8 publications

Environmental management zoning for coal mining in mainland China based on ecological and resources conditions

Environmental management zoning for coal mining in mainland China based on ecological and resources conditions

Roadway backfill method to prevent geohazards induced by room and pillar mining: a case study in Changxing coal mine, China

Change detection and visualization of acid mine lakes using time series satellite image data in geographic information systems (GIS): Can (Canakkale) County, NW Turkey

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