Reshaping slope form of grassland coal mine dump based on natural slope model

被引：0
|
作者：
Li H. [1 ]
Lei S. [1 ]
Huang Y. [1 ]
Cheng W. [1 ]
Deng B. [2 ]
Zhang Z. [3 ]
机构：
[1] Engineering Research Center for Mine Ecological Restoration of Ministry of Education, China University of Mining and Technology, Xuzhou
[2] Shenhua Beidian Shengli Energy Company, Xilinhot
[3] Shenhua Baorixile Energy Corporation, Hulunbeier
来源：
Meitan Xuebao/Journal of the China Coal Society | 2019年 / 44卷 / 12期
关键词：
Golden section ratio; Near-natural topographic reconstruction; Shengli mining area; Slope characteristic parameters; WEPP model;
D O I：
10.13225/j.cnki.jccs.SH19.1046
中图分类号：
学科分类号：
摘要：
The traditional slope model of the waste dump cannot be well integrated into the surrounding environment in mining area, which leads to serious soil and water loss in the dump. Therefore, it is necessary to reshape the landform of slope to reduce the soil loss, improve the soil conservation ability of the slope, and make the dump be able to coordinate with the surrounding environment. Near-natural topographic reconstruction takes undisturbed landform as reference to construct a landform model in line with local erosion process, which has many applications in topographic reconstruction at domestic and overseas. Based on the theory of near-natural topographic reconstruction and the principle of statistics, this paper takes Shengli mining area as the research area, extracts and analyzes the characteristic parameters of the natural slope in this area, and constructs the anti-S type slope model. WEPP model is used to compare and analyze the soil retention ability and long-term stability of the anti-S slope model and the original dump slope model, and the advantages of the anti-S slope model are verified. The specific results are as follows: ① the characteristic parameters of the natural slope of Shengli mining area are extracted for analysis, and the results show that the main side slope type of Shengli mining area is anti-S slope. On this basis, two new slope characteristic parameters, convex horizontal ratio and convex vertical ratio are proposed, and the characteristic parameters of anti-S slope are extracted. ② Correlation analysis and curve fitting of slope characteristic parameters of steep slope and gentle slope in Shengli mining area are conducted respectively. On this basis, the anti-S type slope model of steep slope and gentle slope is constructed respectively, and it is found that the dividing point of concave and convex in the vertical direction in anti-S slope model of steep slope is located near the golden section ratio. ③ The anti-S type slope model of the steep slope is used to design the characteristic parameters of the slope of the dump in Shengli mining area. After input data of Shengli mining area in WEPP model, such as climate, soil, vegetation data, the water erosion analysis is carried out on the constructed slope model and the original dump slope model of the dump under the condition of different slope height and different simulation years, the results show that with the increase of slope height and simulated years, the anti-S type slope model has a better soil retention capacity and long-term stability than the original dump slope model, which can be used as the basis for the design of dump slope. © 2019, Editorial Office of Journal of China Coal Society. All right reserved.
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页码：3830 / 3838
页数：8
相关论文
共 24 条
  • [1] Yang B., Bai Z., Study on low-carbon land use in open-pit coal mine area, China Mining Industry, 28, 6, pp. 89-93, (2019)
  • [2] Hancock G.R., Martin D.J.F., Willgoose G.R., Geomorphic design and modelling at catchment scale for best mine rehabilitation-The Drayton mine example(New South Wales, Australia), Environmental Modelling & Software, 114, pp. 140-151, (2019)
  • [3] Bian Z., Review on land reclamation in coal mine areas at home and abroad, China Land Science, 14, pp. 6-11, (2000)
  • [4] Chen C., Zhang A., La M., Et al., Soil heavy metal contamination and enrichment of dominant plants in coal waste piles in Pingdingshan area, Ecology and Environmental Sciences, 28, 6, pp. 1216-1223, (2019)
  • [5] Cui E., Fan X., Li Z., Et al., Variations in soil and plant-microbiome composition with different quality irrigation waters and biochar supplementation, Applied Soil Ecology, 142, pp. 99-109, (2019)
  • [6] Yu H., Mu S., Bian Z., Et al., Analysis for vegetation degradation factors in opencast coal mines in northern grass-land area, China, Journal of Ecology and Rural Environment, 35, 1, pp. 1-8, (2019)
  • [7] Liu S., Li W., Zoning and management of phreatic water resource conservation impacted by underground coal mining: A case study in arid and semiarid areas, Journal of Cleaner Production, 224, pp. 677-685, (2019)
  • [8] Barkwith A., Hurst M.D., Jackson C.R., Et al., Simulating the influences of groundwater on regional geomorphology using a distributed, dynamic, landscape evolution modelling platform, Environmental Modelling and Software, (2015)
  • [9] Castellanos B.J., Blanco R.O., Leon P.J.D., Et al., Planted forests for open coal mine spoils rehabilitation in Colombian drylands: Contributions of fine litterfall through an age chronosequence, Ecological Engineering, 138, pp. 180-187, (2019)
  • [10] Zhang J., Sun Q., Li M., Et al., The mining-induced seepage effect and reconstruction of key aquiclude strata during backfill mining, Mine Water and the Environment, 38, 3, pp. 590-601, (2019)
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