铜川矿区米动条件下地质环境承载能力分级评价标准研究

发布时间：2019-04-21 13:58

【摘要】：矿区地质环境承载能力评估对确保矿区可持续发展具有重要意义。大量研究及实践表明,采前科学合理的规划是减轻煤矿区地质环境问题的主要途径。通过建立煤矿区地质环境承载能力分级评价标准,开展采动条件下矿区地质环境承载能力分级评价,能为矿区合理规划及环境保护提供重要依据。本文通过数值模拟实验方法,分析了影响煤矿区地质环境承载能力的各介质条件、因素指标及各指标对地质环境承载能力的影响趋势;依据地质环境抗扰动能力和采动对受保护对象的破坏程度,把地质环境承载能力分为强、较强、较弱、弱四个级别。通过多模型单因素数值模拟实验,确定了量化因素指标的分级阀值,通过总结及借鉴前人的研究成果,确定了定性指标的分级阀值,提出了地质环境承载能力分级评价标准表;通过铜川矿区采煤沉陷数据,利用灰色关联分析法研究了各项因素指标和采煤沉陷的关联度,得出了影响采煤沉陷的主要因素指标;利用层次分析法确定了影响铜川矿区地质环境承载能力核心指标体系的权重,建立了矿区地质环境承载能力等级的模糊综合评判模型。论文以建立的评价标准和方法对下石节煤矿和王石凹煤矿地质环境承载能力进行了分级评价。评价结果显示下石节煤矿地质环境承载能力为较强级,王石凹煤矿地质环境承载能力属于较弱级,评价结果与事实基本相符,说明评价标准和评价方法具有一定的应用价值,可为煤矿区开采前的合理规划提供依据。
[Abstract]:It is of great significance to evaluate the bearing capacity of geological environment in mining area to ensure the sustainable development of mining area. A great deal of research and practice show that scientific and reasonable pre-mining planning is the main way to alleviate the geological environmental problems in coal mining areas. In order to provide important basis for rational planning and environmental protection of mining area, the grading evaluation standard of geological environmental bearing capacity of coal mining area is established and the grading evaluation of geological environmental carrying capacity of mining area under mining condition is carried out. By means of numerical simulation experiment, this paper analyzes the medium condition, the factors index and the trend of the influence of each index on the bearing capacity of geological environment in coal mining area. According to the anti-disturbance ability of geological environment and the damage degree of mining to protected objects, the bearing capacity of geological environment is divided into four levels: strong, weak and weak. Through the multi-model and single factor numerical simulation experiment, the classification threshold of quantitative factor index is determined. By summarizing and drawing lessons from previous research results, the classification threshold value of qualitative index is determined, and the classification evaluation standard table of geological environment bearing capacity is put forward. Based on the data of mining subsidence in Tongchuan mining area, the correlation degree of each factor index and mining subsidence is studied by means of grey relational analysis, and the main factors affecting mining subsidence are obtained. The weight of the core index system affecting the bearing capacity of geological environment in Tongchuan mining area was determined by analytic hierarchy process (AHP), and the fuzzy comprehensive evaluation model of bearing capacity grade of geological environment in Tongchuan mining area was established. In this paper, the bearing capacity of geological environment in Xiashijie coal mine and Wangshiwa coal mine is evaluated by the established evaluation criteria and methods. The evaluation results show that the geological environment bearing capacity of Xiashijie Coal Mine is stronger, and the geological environmental carrying capacity of Wangshiwa Coal Mine belongs to the weaker grade. The evaluation results are basically consistent with the facts, indicating that the evaluation criteria and methods have certain application value. It can provide basis for rational planning before mining in coal mine area.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD167

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