reclamation of coal mine subsidence area in loess hilly

Effects of subsidence and transplanted trees on soil ...

Dec 01, 2020  Within the loess area, the cracks on the edge of the surface subsidence area in the gully mined-out area are relatively large. The cracks are approximately 3–50 cm wide, and the maximum drop is 1.5 m. The coal mining subsidence area has a relatively evident effect on the surface.

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Breaking of Key Layers and Surface Subsidence in the Loess ...

During the process of mining subsidence, the thick loess layer will have certain cohesion, tensile strength and flexural strength. Therefore, the thick loess layer may have a significant impact on the overburden load of the mining area, which further affects the fracture and surface subsidence of the overlying strata on the working surface. The calculation model was constructed based on the ...

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PAPER OPEN ACCESS Breaking of Key Layers and Surface ...

the multi-region of geological disaster area [5]. In the area of mining subsidence, the mining subsidence in the Loess Mountain area is expected to be more complicated [6]. In the mining area with thin topsoil, the key layer plays a major role in controlling the surface subsidence [7]. Under the

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The influence of transplanted trees on soil microbial ...

Mar 01, 2020  Located in the Shendong Coal Mine of Daliuta Town, Shenmu County, Shaanxi Province, China, the study area lies at the juncture of the Loess Plateau and Mu Us Desert and stretches from 39°16′9.97″N to 39°16′58.28″N, and from 110°18′57.19″E to 110°19′20.13″E ().The altitude ranges from 1216 to 1265 m, the average annual precipitation is 437.5 mm, and the precipitation from ...

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Land Subsidence in a Coal Mining Area Reduced Soil ...

The average depth of the coal seam was approximately 250 m, and the thickness of the coal seam was approximately 3–8 m in the study area. At each coal mine, the distance between the subsidence plot and control plot was approximately 300 m. In each coal mine, the subsidence and control regions had the same soil type and texture.

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Reclamation suitability evaluation of damaged mined land ...

May 25, 2018  Reclamation suitability evaluation is the basis for determining the reuse direction of damaged land. Most scholars’ studies have focused on the improvement and innovation of evaluation models and methods, while the analysis of restrictive factors is rarely involved. This paper evaluates the reclamation suitability of damaged land around Longchi coal mine by the integrated index method

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Concurrent mining and reclamation for underground coal ...

Mar 27, 2018  Coal resources distribution and subsidence related surface damage characteristics.Proven coal reserves are estimated as 1.53 trillion mt as of 2015 and rank third in the world (Xiao et al. 2014a, b).Their distribution is shown in Fig. 1.The degree of subsidence-related damage in different mining regions varies due to the geological and hydrogeological differences.

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Land Subsidence in a Coal Mining Area Reduced Soil ...

Underground coal mining in western China causes heavy land subsidence and alters the soil ecology. However, the effects of land subsidence on soil fertility are not currently known, and the key factors governing its impact remain unclear in sandy land. We investigated the effects of land subsidence induced by underground mining on the soil quality in western China.

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Reclamation of abandoned coal mines in Indiana Indiana ...

Removal and re-burial of pyrite-bearing mine refuse is costly and has seldom been an economically viable reclamation option. In-place burial has proven to be effective in certain settings, using both capping (Branam and others, 2011; Naylor and others, 2010) and revegetation (Harper and others, 2011).

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IOP Conference Series: Earth and Environmental Science ...

2.2. Situation of reclamation project area Shendong mining area contains large amounts of high quality coal, and it is shallow burial. After the coal mining, it is easy to form the ground collapse pit [18]. With the increase of coal mining intensity,

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Unexpected hydrologic perturbation in an abandoned ...

A reclamation project at the abandoned Blackhawk Mine site near Terre Haute, Indiana, lasted about four months and involved the burial of coarse mine refuse in shallow (less than 9 m) pits excavated into loess and till in an area of about 16 ha. An abandoned flooded underground coal mine underlies the reclamation site at a depth of about 38 m; the total area underlain by the mine is about 10 km2.

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Breaking of Key Layers and Surface Subsidence in the Loess ...

During the process of mining subsidence, the thick loess layer will have certain cohesion, tensile strength and flexural strength. Therefore, the thick loess layer may have a significant impact on the overburden load of the mining area, which further affects the fracture and surface subsidence of the overlying strata on the working surface. The calculation model was constructed based on the ...

More

PAPER OPEN ACCESS Breaking of Key Layers and Surface ...

the multi-region of geological disaster area [5]. In the area of mining subsidence, the mining subsidence in the Loess Mountain area is expected to be more complicated [6]. In the mining area with thin topsoil, the key layer plays a major role in controlling the surface subsidence [7]. Under the

More

The influence of transplanted trees on soil microbial ...

74 in areas affected by coal mining subsidence ,because it improves soil properties and promotes the 75 restoration of soil microbial communities. This study focused on the areas affected by coal mining 76 subsidence in the Loess Plateau of western China, including the communities of transplanted trees.

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Quantifying the Impacts of Climate Change, Coal Mining and ...

Loess Plateau [18]. It is a typical loess hilly landform [19], and is one of the most severely water and soil losing areas on the Loess Plateau. The Shenfu-Dongsheng coalfield is through the middle of the ... Along with the coal mining amount increasing , coal mining subsidence areas were 26.01 km 2 in 1991, 48.82 km 2 in 2000, and 266.15 km 2 ...

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Assessing the naturalness of a restored coal mine area on ...

Jul 12, 2019  The Loess Plateau in China is an important area for mineral resources and therefore heavily exploited. As a measure to solve the conflict between conservation and development, ecological restoration has attracted more and more attention. More methods are needed to assess their effectiveness in achieving ecological and social goals. To adequately assess the effectiveness of

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Revegetation pattern affecting accumulation of organic ...

profile after mining and reclamation in an opencast coal mine on the loess plateau, china. Ecological Engineering 98:228 239DOI 10.1016/j.ecoleng.2016.10.078. LiuY,LeiSG,GongCG. 2019. Comparison of plant and microbial communities between an artificial restoration and a natural restoration topsoil in coal mining subsidence area.

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Reclamation suitability evaluation of damaged mined land ...

May 25, 2018  Reclamation suitability evaluation is the basis for determining the reuse direction of damaged land. Most scholars’ studies have focused on the improvement and innovation of evaluation models and methods, while the analysis of restrictive factors is rarely involved. This paper evaluates the reclamation suitability of damaged land around Longchi coal mine by the integrated index method

More

Land Subsidence in a Coal Mining Area Reduced Soil ...

Underground coal mining in western China causes heavy land subsidence and alters the soil ecology. However, the effects of land subsidence on soil fertility are not currently known, and the key factors governing its impact remain unclear in sandy land. We investigated the effects of land subsidence induced by underground mining on the soil quality in western China.

More

Reclamation of abandoned coal mines in Indiana Indiana ...

Removal and re-burial of pyrite-bearing mine refuse is costly and has seldom been an economically viable reclamation option. In-place burial has proven to be effective in certain settings, using both capping (Branam and others, 2011; Naylor and others, 2010) and revegetation (Harper and others, 2011).

More

Interaction ~ Reclaimed Soil, Vegetation. Zhang Probe ...

Wang Ping,Wang Jinman,Qin Qian,Wait..Effect of Coal Mining Subsidence on soil hydraulic characteristics in Loess Area[J].Journal of Soil and Water Conservation, 2016, 30 (3): 297-304. Zhu Yucheng,Wang Jinman,Bai zhongke,Wait..Coal mining collapse on the soil physical and chemical properties of Research Progress[J].Soil2016 48 (1): 22-28

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Variation of Nutrients and Selected Soil Properties in ...

Reclaiming the subsidence area that results from coal-mining could alleviate the shortage of arable land in China. This study examined the effects of fertilization and reclamation age on soil nutrients and other properties in the 0–100 cm profile at an underground coal mine site on the Loess Plateau of China.

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Ground Subsidence - Colorado Geological Survey

In Colorado, the types of subsidence of greatest concern are settlement related to collapsing soils, sinkholes in karst areas, and the ground subsidence over abandoned mine workings. Legal definition. H.B. 1041, 106-7-103(10): “Ground subsidence” means a process characterized by downward displacement of surface material caused by natural ...

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Unexpected hydrologic perturbation in an abandoned ...

A reclamation project at the abandoned Blackhawk Mine site near Terre Haute, Indiana, lasted about four months and involved the burial of coarse mine refuse in shallow (less than 9 m) pits excavated into loess and till in an area of about 16 ha. An abandoned flooded underground coal mine underlies the reclamation site at a depth of about 38 m; the total area underlain by the mine is about 10 ...

More

Unexpected hydrologic perturbation in an abandoned ...

A reclamation project at the abandoned Blackhawk Mine site near Terre Haute, Indiana, lasted about four months and involved the burial of coarse mine refuse in shallow (less than 9 m) pits excavated into loess and till in an area of about 16 ha. An abandoned flooded underground coal mine underlies the reclamation site at a depth of about 38 m; the total area underlain by the mine is about 10 km2.

More

Assessing the naturalness of a restored coal mine area on ...

Jul 12, 2019  The Loess Plateau in China is an important area for mineral resources and therefore heavily exploited. As a measure to solve the conflict between conservation and development, ecological restoration has attracted more and more attention. More methods are needed to assess their effectiveness in achieving ecological and social goals. To adequately assess the effectiveness of

More

Unexpected hydrologic perturbation in an abandoned ...

A reclamation project at the abandoned Blackhawk Mine site near Terre Haute, Indiana, lasted about four months and involved the burial of coarse mine refuse in shallow (less than 9 m) pits excavated into loess and till in an area of about 16 ha. An abandoned flooded underground coal mine underlies the reclamation site at a depth of about 38 m; the total area underlain by the mine is about 10 ...

More

Quantifying the Impacts of Climate Change, Coal Mining and ...

Loess Plateau [18]. It is a typical loess hilly landform [19], and is one of the most severely water and soil losing areas on the Loess Plateau. The Shenfu-Dongsheng coalfield is through the middle of the ... Along with the coal mining amount increasing , coal mining subsidence areas were 26.01 km 2 in 1991, 48.82 km 2 in 2000, and 266.15 km 2 ...

More

Interaction ~ Reclaimed Soil, Vegetation. Zhang Probe ...

Wang Ping,Wang Jinman,Qin Qian,Wait..Effect of Coal Mining Subsidence on soil hydraulic characteristics in Loess Area[J].Journal of Soil and Water Conservation, 2016, 30 (3): 297-304. Zhu Yucheng,Wang Jinman,Bai zhongke,Wait..Coal mining collapse on the soil physical and chemical properties of Research Progress[J].Soil2016 48 (1): 22-28

More

Revegetation pattern affecting accumulation of organic ...

profile after mining and reclamation in an opencast coal mine on the loess plateau, china. Ecological Engineering 98:228 239DOI 10.1016/j.ecoleng.2016.10.078. LiuY,LeiSG,GongCG. 2019. Comparison of plant and microbial communities between an artificial restoration and a natural restoration topsoil in coal mining subsidence area.

More

Land Reclamation in Ecological Fragile Areas Taylor ...

Jul 20, 2017  • Education, technology transfer and international cooperation of mine land reclamation • “The Belt and Road Initiative” and mine land restoration. Land Reclamation in Ecological Fragile Areas will be of interest to engineers,scientists, consultants, government officials and students in this area.

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Mine Subsidence in Indiana Indiana Geological Water Survey

More than 900 million tons of coal has been removed from underground mines in southwestern Indiana, and more than 194,000 acres are underlain by such mines, most of which are abandoned. In places, as many as three different coal beds were mined (referred to as “multiseam mining”).

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Geography/Maps/Places - Anthracite Coal Mining Region of ...

Nov 19, 2020  Coal mining has occurred in Pennsylvania for over a century. The maps to these coal mines are stored at various public and private locations (if they still exist at all) throughout the commonwealth. The Pennsylvania Department of Environmental Protection, Office of Active and Abandoned Mine Operations (DEP) is involved in many projects dealing ...

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Excellence in Surface Coal Mining Reclamation Awards Winners

National Award Award: Peabody Midwest Mining, LLC, Vermilion Grove Mine, Ridge Farm, Illinois The mine’s use of a filter press to de-water slurry generated from a coal preparation plant allowed for increased compaction levels, a smaller footprint of refuse area reclamation, and allowed for recovery of water in the plant.

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Dynamic Changes in Surface Damage Induced by High ...

This study proposes a novel approach to study the mechanism of mining and dynamic changes in surface subsidence and geological hazard-prone regions caused by shallow, thick coal seam mining in gully areas. This approach combines field observation, three-dimensional modeling, numerical simulation, and theoretical analysis based on the conditions of the Chuancao Gedan coal mine.

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A novel environmental restoration method for an abandoned ...

May 30, 2018  1. Introduction. Mining provides important raw materials for national economic development and the progress of human civilization and is a mainstay industry of many countries and regions [].Moreover, open-pit mining is generally preferred in mining operations due to its applicability in all operable areas of exposed rock, minimum production loss and high production rate [], especially

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Pennsylvania DEP Launches Online Map Atlas of Underground ...

Jun 10, 2013  Of the 1 million homes in Pennsylvania that sit above underground mines, one in 2,000 insured buildings are damaged by mine subsidence, costing an average of $50,000 per structure.

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Ecological Restoration of Abandoned Mine Land in China

Mining activities produced a lot of abandoned mine land. This paper introduced the theoretical and technical progress of ecological restoration of surface coal mines, mining subsidence land and coal waste piles in China and discussed some key problems for research in the future. Ecological restoration of abandoned mine land was related to many disciplines, and multi—disciplinary theories ...

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Unexpected hydrologic perturbation in an abandoned ...

A reclamation project at the abandoned Blackhawk Mine site near Terre Haute, Indiana, lasted about four months and involved the burial of coarse mine refuse in shallow (less than 9 m) pits excavated into loess and till in an area of about 16 ha. An abandoned flooded underground coal mine underlies the reclamation site at a depth of about 38 m; the total area underlain by the mine is about 10 ...

More

Restoration technologies of damaged paddy in hilly post ...

The paddy fields and water storage facilities are seriously damaged by the coal mine subsiding in the hilly post-mining and subsidence-stable areas in China, which make the farmers there being suffered greatly from the lack of water for traditional rice cultivation and daily life. The purpose of this paper is to find a method to restore the damaged paddy fields, thereby promoting sustainable...

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Dynamic Changes in Surface Damage Induced by High ...

This study proposes a novel approach to study the mechanism of mining and dynamic changes in surface subsidence and geological hazard-prone regions caused by shallow, thick coal seam mining in gully areas. This approach combines field observation, three-dimensional modeling, numerical simulation, and theoretical analysis based on the conditions of the Chuancao Gedan coal mine.

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Fast surveying and large scale mapping in the mining area ...

Land subsidence and ecological deterioration will be caused by underground coal mining, and a series of geological and environmental would occur frequently. The main mining areas in northwest of China are located in the arid loess mountain area, itself belongs to susceptible area of natural geologic hazard, and often happens mining subsidence.

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Review Article Mine Land Reclamation and Eco ...

subsidence in coal mining. e unreasonable exploitation of the coal district will lead to a series of environmental problems in the following. eminingsubsidenceincoal eldseverelydamaged the mining area environment, resulting in the house crack, farmland ponding, road fracture, pond dried up,andsoon.Allthedamagesmakeagreatdi erence

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Ecological Restoration of Abandoned Mine Land in China

Mining activities produced a lot of abandoned mine land. This paper introduced the theoretical and technical progress of ecological restoration of surface coal mines, mining subsidence land and coal waste piles in China and discussed some key problems for research in the future. Ecological restoration of abandoned mine land was related to many disciplines, and multi—disciplinary theories ...

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Study on System Coupling Effects of Ecological and ...

Ecological environment and socio-economic system has tremendous changed during coal mining, in particular, the coupling relationship between ecological and economic evolued in different stages of coal mining. This article take the process of mining and treatment as a case to study, construct the ecological environment and socio-economic system, system coupling model, coupled model and coupling ...

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A novel environmental restoration method for an abandoned ...

May 30, 2018  1. Introduction. Mining provides important raw materials for national economic development and the progress of human civilization and is a mainstay industry of many countries and regions [].Moreover, open-pit mining is generally preferred in mining operations due to its applicability in all operable areas of exposed rock, minimum production loss and high production rate [], especially

More

Pennsylvania DEP Launches Online Map Atlas of Underground ...

Jun 10, 2013  Of the 1 million homes in Pennsylvania that sit above underground mines, one in 2,000 insured buildings are damaged by mine subsidence, costing an average of $50,000 per structure.

More

Excellence in Surface Coal Mining Reclamation Awards Winners

National Award Award: Peabody Midwest Mining, LLC, Vermilion Grove Mine, Ridge Farm, Illinois The mine’s use of a filter press to de-water slurry generated from a coal preparation plant allowed for increased compaction levels, a smaller footprint of refuse area reclamation, and allowed for recovery of water in the plant.

More

Changes in the composition and diversity of bacterial ...

Dec 25, 2014  Soil samples were taken in two seasons (December 2012 and July 2013) from a mining reclamation region at the Liuxin national reclamation demonstration area in China and an adjacent coal‐excavated subsidence region. 454 high‐throughput sequencing technology was used to compare the composition and diversity of bacterial communities in ...

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Large coal mines - Global Energy Monitor

Longwall mining, a form of underground mining designed to completely remove underground coal seams, results in land subsidence over large areas. As documented by reports describing subsidence impacts in Pennsylvania and elsewhere, longwall mining produces serious impacts to buildings, surface water supplies, aquifers. [51]

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Articles Service - JMB

Land subsidence induced by underground coal mining leads to severe ecological and environmental problems. Arbuscular mycorrhizal fungi (AMF) have the potential to improve plant growth and soil properties. We aimed to assess the effects of AMF on the growth and soil properties of sea buckthorn under field conditions at different reclamation times.

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Land Reclamation in Ecological Fragile Areas: Proceedings ...

Land Reclamation in Ecological Fragile Areas contains the proceedings of the 2nd International Symposium on Land Reclamation and Ecological Restoration (LRER 2017, Xi’an, China, 20-23 October 2017). The contributions cover a wide range of topics: • Mining impact on environment• Monitoring, prediction and assessment of mining impact on land environment• Mining methods and

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