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    煤与异体共生矿产协调开采度评估方法

    Coordinated mining degree evaluation method for coal and paragenetic commercial minerals in different orebody

    • 摘要: 我国煤系共伴生矿产资源丰富,煤与异体共生矿产以往多采用独立开采模式,各矿产开采引发的岩层活动、流体迁移等会影响彼此正常开采。因此,协调开采迫在眉睫,且亟需建立一套科学表征煤与异体共生矿产协调开采程度的方法。针对这一需求,提出了一种协调开采度评估方法,构建了差异化的评价模型与指标体系。方法上,依据矿产战略属性和稀缺程度,将其划分为一般矿产与稀缺战略性矿产2类,分别建立多矿种协调生产进度规划模型和开采错距导向模型。前者以经济效益最大化为核心,通过0‒1整数规划与遗传算法实现多矿体开采的时空协同优化;后者以资源安全优先为原则,构建“错距判定‒风险机理分析‒技术措施匹配”的三阶范式,量化评估不同空间错距条件下的资源保全水平与污染风险。在此基础上,形成了涵盖资源安全与经济效益、矿山安全生产、环境保护三大维度,包含风险层与状态层的指标体系,并通过标准化计算、阈值判定双轨赋分与层次分析赋权方法,实现协调开采度的综合评价。算例研究表明:山西某煤铝矿山协调开采度为0.8936,属良好等级;新疆某煤铀矿山协调开采度为0.9093,属优秀等级。结果验证了所提方法在兼顾经济效益与资源安全、提升矿产开发系统性与可持续性方面的有效性与适用性。

       

      Abstract: Paragenetic commercial and associated minerals in coal series are abundant in China, yet they have long been mined independently, leading to low resource utilization efficiency and serious environmental impacts, which restrict sustainable development. How to scientifically characterize the degree of coordination during mining has therefore become a key research challenge. This study proposes a Coordinated Mining Degree (CMD) evaluation method and develops differentiated models and indicator systems. Minerals are classified into general and scarce strategic categories, for which a Multi-mineral Coordinated Production Scheduling (MCPS) model and a spacing-guided model are established, respectively. The MCPS model maximizes economic efficiency through 0–1 integer programming and genetic algorithms to optimize spatiotemporal coordination of multi-orebody extraction. The spacing-guided model prioritizes resource security, adopting a three-stage framework of spacing determination, risk mechanism analysis, and technical measure matching, to quantify resource preservation and pollution risks. An integrated indicator system is then formulated, covering three dimensions—resource security and economic efficiency, mine safety, and environmental protection—with risk and state indicators. Comprehensive evaluation is achieved via dual-track scoring (standardization and threshold functions) combined with Analytic Hierarchy Process (AHP)-based weighting. Case studies show that the CMD of a coal–bauxite mine in Shanxi is 0.8936 (good) and that of a coal–uranium mine in Xinjiang is 0.9093 (excellent). These findings validate the effectiveness and applicability of the proposed method in balancing economic efficiency with resource security, and demonstrate its potential to enhance the systemic and sustainable development of mineral exploitation.

       

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