近塌陷区采空区群分区治理研究

    Study on the zoning management of goaf groups in the near-collapse area

    • 摘要: 某矿由于民采越界盗采,破坏采空区保安矿柱,使得采空区群失稳,出现地表塌陷,对近采空区群资源回收及地表建筑产生影响。为控制地表塌陷及采空区群存在的隐患,通过地质资料建立近塌陷区矿体-采空区群模型,并基于此模型基础上分区治理采空区群。研究结果表明:采空区内充满散体时可一定程度上控制压应力的变化,而采空区充满散体与胶结体的混合充填体时,则可在一定程度上控制拉应力的变化,当采空区充满胶结充填体时,则可很好地改善采空区应力位移变化。分区治理采空区因势利导,既可安全施工,又可很好地控制地表塌陷区的影响范围和回收采空区群附近的资源。

       

      Abstract: Due to illegal mining and over-mining activities, a certain mine has experienced damage to the security pillars of the mining area, resulting in instability of the mined-out area groups, surface collapse, and impact on resource recovery near the mining areas and surface structures. To control surface collapse and the hidden dangers in the mining area groups, a mining body-goaf group model near-collapse area is established based on geological data. Based on this model, the goafs are managed and treated in different areas. The research results show that the presence of loose materials within the goafs can control changes in compressive stress to a certain extent. When the empty spaces are filled with a mixture of loose materials and cemented materials, it can control changes in tensile stress to a certain degree. When the empty spaces are completely filled with cemented materials, it can significantly improve the stress and displacement changes in the empty areas. The approach of empty areas takes advantage of the situation, which not only ensures safe construction but also effectively controls the scope of influence of the surface collapse area and recovers resources near the mining-out area groups.

       

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