回填土质量评价体系和标准研究进展

    Research progress in backfill quality evaluation system and standards

    • 摘要: 在建筑施工领域回填土的质量标准研究已较深入,但现有标准中未关注到回填土污染物浓度问题,在今后相关标准制定中需对其加以考虑。污染场地中回填土的质量标准主要由土地用途决定,本文主要从建设用地和农业用地两方面对修复后土壤再利用的质量控制进行厘定,为污染场地回填土的质量标准建立提供建议。污泥土地利用可大致分为园林绿化、土地改良、农用和林用地4种类型,不同土地利用的质量评价指标也有所不同。有关矿山回填土的质量标准研究缺乏,从土地复垦类型、回填土性质、回填深度等方面初步建立矿山回填土的质量控制标准,认为避免地质灾害和预防污染物扩散是矿山回填土质量控制的核心,同时利用现有相关标准和规范,初步建立矿山回填土质量评价流程,为矿山回填土质量标准建立提供理论基础,为今后相关回填土标准的制定提供借鉴。

       

      Abstract: The research on the quality standard of backfill in the field of construction has been increasingly going into the depth, but attention has not paid to the concentration of pollutants in backfill in the existing standards, so this problem should be considered in the formulation of relevant standards in the future.The quality standard of backfill in polluted sites is mainly determined by land use.In this paper, the authors mainly determined the quality control of soil reuse after remediation in the aspects of construction land and agricultural land, and provided suggestions for the establishment of quality standard of backfill in polluted sites.Sludge land use is mainly divided into four aspects:landscaping, land improvement, agriculture and forestry.At present, there is no evaluation standard for backfill quality of special mine both in China and abroad, and the relevant index system has not been formed.The authors focused on the analysis of mine backfill types and quality evaluation indicators, mainly from the type of land reclamation, backfill soil nature and the aspect of backfilling depth, and hold that avoiding geological disasters and preventing the spread of pollutants constitute the core of mine backfill quality control.At the same time, the authors preliminarily established the process of evaluating the quality of backfill soil in mines based on the existing relevant standards and norms, in order to provide a theoretical basis for the establishment of the quality standard of backfill in mine and provide reference for the formulation of the relevant backfill standards in the future.

       

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