平煤十矿开采塌陷区土地破坏情况及复垦技术研究

    Research on land destruction and reclamation technology in coal mining subsidence of Pingmei No.10 Mine

    • 摘要: 地下开采导致的地表沉陷、植被退化、土地压占等地质灾害和生态环境问题日趋严重,若不采取相应的技术措施,不仅给企业带来巨大的经济损失,同时也会影响到矿区的可持续发展和周边人民生活的稳定。因此,为了减轻这种负面影响,本文以深部多煤层重复开采的平煤十矿为工程背景,通过实地调查、理论分析、室内计算,对煤塌陷区的土地破坏情况进行分析,并对不同时期不同类型的破坏形式提出相应的矿区地质环境保护和土地复垦技术措施。结果表明,平煤十矿的煤炭开采对地面的损毁主要为大面积地表沉陷(1 824.89 hm2)和矸石压占土地,以及沉陷导致的不同程度的地裂缝。而针对平煤十矿煤炭开采对土地造成的破坏,本研究提出了传统土地复垦模式和“分段治理、一次性复全高”等新技术。将破坏后的土地全部复垦为农用地,包括耕地、园地、林地、草地和农村道路等,并采取土壤重构、植被重建和配套工程等措施。同时,在结合“超前复垦”“边采边复”模式,实行“分段治理、一次性复全高”的技术措施下,复垦取得了良好的效果。该研究结果完善了平煤矿区动态土地复垦技术体系,对类似矿区生态环境治理和完善土地复垦技术具有重要的指导作用。

       

      Abstract: Geological disasters and ecological environmental problems, such as surface subsidence, vegetation degradation, and land occupation caused by underground mining, are increasingly severe. Without corresponding technical measures, these issues will not only result in significant economic losses for enterprises but also impact the sustainable development of mining areas and the stability of surrounding communities. Therefore, to mitigate this negative impact, this paper analyzes land damage in coal subsidence areas through field investigation, theoretical analysis, and indoor calculation using Pingmei No.10 Mine as an engineering background. The study proposes corresponding technical measures for geological environment protection and land reclamation in the mining area for different types of damage forms during various periods. The results show that large-scale surface subsidence (1 824.89 hm2), gangue compression of the land, and ground cracks caused by subsidence are the primary damages to the ground from coal mining at Pingmei No.10 Mine. To address these issues effectively, this study suggests traditional land reclamation models along with new technologies such as “sectional management and one-time restoration full height implement”. All damaged lands will be reclaimed into agricultural lands including cultivated lands, garden lands forestlands grasslands rural roads while implementing soil reconstruction vegetation reconstruction supporting projects simultaneously with “advance reclamation mode” and “concurrent mining and reclamation mode” “sectional management and one time restoration full height implementation” technical measures achieving good results dynamic land reclamation technology system improvement in Pingmei coal mining area guiding role.

       

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