缓倾斜磷矿体开采关键技术研究进展与展望

    Research progress and prospects of key technologies for gently inclined phosphate ore bodies mining

    • 摘要: 随着磷资源战略地位日益凸显,缓倾斜磷矿体安全、高效与绿色开采已成为保障国家资源安全、促进化工产业可持续发展的关键技术。通过系统梳理缓倾斜磷矿体高效开采技术研究进展,展望其未来发展方向。针对矿体厚度变化大、夹软弱泥质层、顶板稳定性差等缓倾斜磷矿体存在的地质难题与开采技术难题,重点综述采矿方法适应性、关键技术问题及路径优化。预控顶机械化分层掘进式房柱法、分段房柱法及其优化变体,在顶板稳定性控制、矿石回收率提高和贫化率降低方面优势显著。废石胶结充填法、上向水平分层充填法和走向条带充填法等在内的充填采矿技术,通过有效控制地压、废弃物处理和降低地表扰动,践行绿色开采理念。以无轨机械化及非爆连续开采为典型的创新技术,推动采矿作业面向智能化、无人化发展,借助智能布孔、远程操控及截割机械化等手段,开采效率与安全性得到显著提升。然而,开采缓倾斜磷矿体依旧面临岩体力学性质空间变异性大、采空区稳定性定量评价困难及开采方法经济性与环境效益协同优化等关键技术难题。未来重点研究方向应包括:深化复杂条件下深部岩体力学行为研究;发展基于多源数据融合与数值模拟的采空区失稳风险动态定量评价方法;融合技术效益、经济效益、环境效益与社会效益的多目标采矿方法优选模型构建;加速推进以大数据、物联网和智能装备为核心的智能化矿山建设。

       

      Abstract: With the increasingly prominent strategic status of phosphorus resources, safe, efficient, and green mining of gently inclined phosphate ore bodies has become a key technology for ensuring national resource security and promoting the sustainable development of the chemical industry. This paper systematically reviews the research progress on efficient mining technology for gently inclined phosphate ore bodies and looks forward to their future development directions. Focusing on the geological and mining technical challenges of gently inclined phosphate ore bodies, such as significant variations in ore body thickness, interlayered weak muddy strata, and poor roof stability, this paper highlights the adaptability of mining methods, key technical issues, and path optimization. The pre-controlled roof mechanized layered advancing room-and-pillar method, segmented room-and-pillar method, and their optimized variants exhibit significant advantages in roof stability control, ore recovery rate improvement, and dilution rate reduction. Filling mining technologies, including waste rock cementation filling, upward horizontal layered filling, and strike strip filling, effectively control ground pressure, waste disposal, and reduce surface disturbance, embodying the concept of green mining. Innovative technologies such as trackless mechanization and non-explosive continuous mining promote the development of mining operations towards intelligence and automation. With intelligent hole arrangement, remote control, and mechanized cutting, mining efficiency and safety have been significantly improved. However, mining gently inclined phosphate ore bodies still faces key technical challenges such as large spatial variability of rock mechanical properties, difficulties in quantitative evaluation of goaf stability, and the coordinated optimization of economic and environmental benefits of mining methods. Future research directions should focus on: deepening the study of deep rock mechanical behavior under complex conditions; developing dynamic quantitative evaluation methods for goaf instability risk based on multi-source data fusion and numerical simulation; constructing multi-objective mining method optimization models that integrate technical, economic, environmental, and social benefits; and accelerating the construction of intelligent mines centered around big data, the Internet of Things, and intelligent equipment.

       

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