彭苏萍,毕银丽. 西部干旱半干旱煤矿区生态环境损伤特征及修复机制[J]. 煤炭学报,2024,49(1):57−64. DOI: 10.13225/j.cnki.jccs.YH24.0156
引用本文: 彭苏萍,毕银丽. 西部干旱半干旱煤矿区生态环境损伤特征及修复机制[J]. 煤炭学报,2024,49(1):57−64. DOI: 10.13225/j.cnki.jccs.YH24.0156
PENG Suping,BI Yinli. Properties of ecological environment damage and their mechanism of restoration in arid and semi-arid coal mining area of western China[J]. Journal of China Coal Society,2024,49(1):57−64. DOI: 10.13225/j.cnki.jccs.YH24.0156
Citation: PENG Suping,BI Yinli. Properties of ecological environment damage and their mechanism of restoration in arid and semi-arid coal mining area of western China[J]. Journal of China Coal Society,2024,49(1):57−64. DOI: 10.13225/j.cnki.jccs.YH24.0156

西部干旱半干旱煤矿区生态环境损伤特征及修复机制

Properties of ecological environment damage and their mechanism of restoration in arid and semi-arid coal mining area of western China

  • 摘要: 我国煤炭开发重点已战略西移,实现煤炭资源绿色开采与生态协调发展,成为保障国家能源安全的重要举措之一。西部煤层大多数埋藏浅、上覆基岩薄、煤层厚,有利于一次采全高大规模井工开采或露天开采。但该地区气候干旱少雨、生态条件脆弱,大规模高强度对矿区及周边生态环境造成的损伤大。由于对开采过程中生态损伤演变机制及采后修复机理尚不清楚,没有成熟的修复理论和方法作指导,成为制约该地区煤炭高质量发展的重大难题。针对上述难题开展系统研究,认为精准勘测煤炭开采全周期工作面地质−水文地质条件和矿区生态演化特征,有助于阐明开采诱致上覆土岩破损机理、水资源散失富集与循环调运规律、生态损伤演变机理和承载力,并揭示采后矿区土岩层、水资源循环、生态自适应机理。采用植物−微生物组合修复方法,初步构建井工和露天矿山人工与自然协同的水−土−生立体耦合修复理论,提出了生态修复机制的新思考,在浅埋深矿区开采形成的裂缝发育犹如农田松土一般,成为生态修复新的契机,促进水−土−生再分配,并利用微生物修复技术,可促进矿区生态环境的正向协同发展,实现西部煤矿脆弱生态区开发“金山银山”,再造“绿水青山”的思维转变。

     

    Abstract: The focus of coal development in China has been strategically shifted westward. That realize green mining of coal resources and coordinated ecological development becomes one of the important measures to ensure national energy security. Most of the coal seams in the western region are buried shallowly, with thin overlying bedrock and thick coal seams, which is beneficial for large-scale underground mining or open-pit mining. However, the climate in the region is arid with little rainfall and fragile ecological conditions, which caused significant damage to the mining area and surrounding ecological environment on a large scale and with high intensity. Due to the unclear understanding of the evolution mechanism of ecological damage during the mining process and the post mining restoration mechanism, there is no mature restoration theory and method to guide it, which has become a major challenge restricting the high-quality development of coal in the region. We are focuse on the above-mentioned difficulties, which consider accurately surveying the geological and hydrogeological conditions and the ecological evolution characteristics of the entire coal mining cycle working face, that be helpful for elucidating the mechanism of overlying soil and rock damage caused by mining, the law of water resource loss and accumulation and cyclic transportation, the mechanism of ecological damage evolution and bearing capacity, and revealing the soil and rock layers, water resource circulation, and mechanism of ecological self-adaption in the post-mining area. By using the plant-microbial combination restoration method, a water-soil ecological three-dimensional coupling remediation theory was constructed for the synergy between artificial and natural restoration in underground and open-pit mines, and a new thinking on the mechanism of ecological restoration was proposed. That development of fissures is like loosening soil in farmland becomes a new opportunity for ecological restoration in shallow buried deep mining area, which promote the redistribution of water-soil-life. Meanwhile, utilizing microbial remediation technology to promote the coordinated forward direction development of water retention-quality improvement-capacity enhancement, practicing the thinking of developing “golden mountains and silver hills” and recreating “green mountains and clear waters” in the western fragile ecological area.

     

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