西部大型煤电基地煤炭开采背景下水土资源特征及变化
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作者单位:

1.国家能源集团宁夏煤业有限责任公司;2.中国矿业大学环境与测绘学院

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中图分类号:

TD88

基金项目:

国家能源集团宁夏煤业有限责任公司企业项目([2023]016);中国煤炭学会项目(2023100099)


Characteristics and changes of water and soil resources under the background of coal mining in large-scale coal-fired power bases in the western region
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School of Environment and Spatial Informatics,China University of Mining and Technology

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    摘要:

    [目的] 基于宁东煤电基地煤炭资源的数量、分布和管理现状,解析水土资源时空演变与分布特征,构建宁东大型煤电基地资源-生态-安全一体化管理框架。[方法] 基于多源数据,通过增长率、土地转移矩阵和土地利用转移矩阵网络分析,研究2003-2023年宁东基地煤炭-水土资源分布特征与时空变化。针对区域水资源管理,明确宁东地表水与地下水开采量及供水能力,通过土地资源利用率分析宁东土地资源开发利用变化。[结果] ①宁东大型煤电基地内煤矿主要集中在中部和北部,2003-2023年煤炭产量年均增长率5.89%。宁东基地水资源主要分布于宁东基地的北部与中部,水体面积由2003年21.45km2增长至2023年45.66km2。宁东基地的土地利用以草地为主,但面积逐年减少,工矿居民用地面积增加最显著,面积从2003年48.26km2增至2023年280.28km2。② 宁东基地以工业用水量为主,其中又以煤炭、煤电、煤化工三大产业用水为主,地下水总供水能力为0.624×108 m3·a-1,水资源利用供需不平衡;土地资源利用程度从2003年6.14%、增长至2023年18.42%,显著提升。[结论] 2003-2023年,宁东煤电基地煤炭产量呈稳步上升趋势,宁东基地内部水资源供需不平衡,但土地资源利用程度显著提升。煤炭开发影响水土资源利用、开采规模与分布变化,带来用水需求和土地占用改变;水资源为煤炭和土地利用提供支撑,其分布与利用格局影响开发活动;土地利用变化影响水分布和煤炭开采,三者相互作用、相互制约。

    Abstract:

    [Objective] Clarify the quantity and distribution of coal resources in Ningdong coal electricity base, analyze the spatio-temporal evolution and distribution characteristics of water and soil resources, analyze the current situation of development and utilization management of major resources in Ningdong Base, and build the resource-ecology-security integrated management framework of large coal electricity base in Ningdong.[Methods] Based on multi-source data, through the network analysis of growth rate, land transfer matrix and land use transfer matrix, this paper studies the distribution characteristics and spatiotemporal changes of coal-land and water resources in Ningdong Base from 2003 to 2023. In view of regional water resources management, this paper defines the surface water and groundwater extraction and water supply capacity of Ningdong, and analyzes the changes of land resources development and utilization in Ningdong through the utilization rate of land resources. [Results] ①The coal mines in the Ningdong large-scale coal-fired electricity base are mainly concentrated in the central and northern regions, with an average annual growth rate of 5.89% in coal production from 2003 to 2023. The water resources of Ningdong Base are mainly distributed in the northern and central parts of the base, and the water area has increased from 21.45km2 in 2003 to 45.66km2 in 2023. The land use of Ningdong Base is mainly grassland, but the area has been decreasing year by year. The area of industrial and residential land has increased the most significantly, from 48.26 km2 in 2003 to 280.28 km2 in 2023. ②The water consumption of Ningdong Base is mainly industrial water consumption, and the industrial water consumption is mainly coal, coal-fired electricity, and coal chemical industries. The total underground water supply capacity is 0.624 × 108 m3·a-1, and the supply and demand of water resources utilization are unbalanced; The utilization level of land resources has significantly increased from 6.14% in 2003 to 18.42% in 2023. [Conclusion] From 2003 to 2023, the coal production of Ningdong Coal and Electricity Base showed a steady upward trend, and the supply and demand of water resources in Ningdong coal base is unbalanced, but the utilization of land resources is significantly improved. Coal development affects the utilization of water and land resources, the change of mining scale and distribution, and brings about the change of water demand and land occupation. Water resources provide support for coal and land use, and their distribution and utilization pattern affect development activities. Land use change affects water distribution and coal mining, and the three interact and restrict each other.

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  • 收稿日期:2024-11-03
  • 最后修改日期:2025-01-05
  • 录用日期:2025-01-06
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