Impacts of Different Land Reclamation Methods on Organic Carbon and Black Carbon in Soil in a Mine Subsided Area

Yuhong, Cao; Liu, Lulu; Liu, Chonggang

doi:10.5814/j.issn.1674-764x.2017.02.010

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…The results indicated that the soil nutrient content of different enhancement modes was the highest in the aeolian soil mixed with weathered coal, followed by the aeolian soil mixed with feldspathic sandstone, and that the aeolian soil mixed and loess exhibited the lowest enhancement mode. Cao et al (2017) collected four distinct soil types using four different land reclamation methods: coal gangue filling (CGF), mixed flat filling (MFR), mud pump filling (MPF), and fly ash filling (FAF). By measuring the amount of organic and black carbon contained in the soil, it was observed that the reclamation method influenced the amount of organic and black carbon contained in the soil.…”

Section: Introductionmentioning

confidence: 99%

Layered Construction of Novel Reconstituted Soils in Coal Mining Sites

Xuefeng,

Jinhang,

Ruijie

et al. 2023

Journal of Resources and Ecology

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This study, which considers coal mining sites, aims to solve problems pertaining to the immense permeability, poor stability, and the environmental pollution of soil. In regard to reconstituted soil, the novel "2+1" layered construction technology entails designing a water-resisting layer, a modified layer, and an evaporation inhibition layer on the surface of the gangue hill. This technology, which entails constructing a novel type of reconstituted soil, considered four mechanical and physical soil properties, namely soil particle size, humidity, unit weight, and soil structure grade. The construction of novel reconstituted soils should consider the influence of biological factors and that of an arid environment, as well as the influence of the soil permeability coefficient, water content, density, temperature, and water-soil interaction; simultaneously, it should consider the chemical composition. With respect to the water-resisting layer, we selected loess and feldspathic sandstone that exhibited high clay content, and we utilized a 20 cm design thickness. The modified layer was composed of sandy loess, weathered coal, and feldspathic sandstone. This layer was exhibited a 60 cm design thickness, and it considered the characteristics pertaining to vegetation, soil compactness, and soil chemical composition. The evaporation inhibition layer was designed using materials such as gravel and straw checkerboard. Regional tests indicated that verified the rational robustness of the novel "2+1" reconstituted soil layered construction. The results provide a reference for ensuring the ecological sustainability of coal mining sites that characterize the arid, desert areas of Northwest China.

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Section: Introductionmentioning

confidence: 99%

Layered Construction of Novel Reconstituted Soils in Coal Mining Sites

Xuefeng,

Jinhang,

Ruijie

et al. 2023

Journal of Resources and Ecology

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Sealing Performance of Bionic Striped Mud Pump Piston

Cong

Gao

Sun³

et al. 2019

Advances in Materials Science and Engineering

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The mud pump piston is a key part for providing mud circulation, but its sealing performance often fails under complex working conditions, which shorten its service life. Inspired by the ring segment structure of earthworms, the bionic striped structure on surfaces of the mud pump piston (BW-160) was designed and machined, and the sealing performances of the bionic striped piston and the standard piston were tested on a sealing performance testing bench. It was found the bionic striped structure efficiently enhanced the sealing performance of the mud pump piston, while the stripe depth and the angle between the stripes and lateral of the piston both significantly affected the sealing performance. The structure with a stripe depth of 2 mm and angle of 90° showed the best sealing performance, which was 90.79% higher than the standard piston. The sealing mechanism showed the striped structure increased the breadth and area of contact sealing between the piston and the cylinder liner. Meanwhile, the striped structure significantly intercepted the early leaked liquid and led to the refluxing rotation of the leaked liquid at the striped structure, reducing the leakage rate.

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Impacts of Different Land Reclamation Methods on Organic Carbon and Black Carbon in Soil in a Mine Subsided Area

Cited by 2 publications

References 4 publications

Layered Construction of Novel Reconstituted Soils in Coal Mining Sites

Layered Construction of Novel Reconstituted Soils in Coal Mining Sites

Sealing Performance of Bionic Striped Mud Pump Piston

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