矿井地质类型定量划分

发布时间：2018-03-07 09:09

本文选题：矿井地质类型　切入点：定量评价　出处：《西安科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：矿井地质定量划分是煤矿地质工作的一项基础工作,它关系到煤矿后续的生产,因而具有非常重要的作用。矿井地质类型定量评价主要涉及到矿井的构造、煤层、水文、瓦斯、煤层顶底板等多个方面,本文以《煤矿地质工作规定》、《煤、泥炭地质勘查规范》(DZ/T0215-2002)与《煤矿防治水规定》为评价依据,将评价数据整理到建好的地质数据库中,通过建立一整套评价体系,初步实现矿井地质类型的定量评价。本文采用Vfp数据库语言建立简单的地质数据库,将矿井中涉及的地质数据整理到地质数据库中,数据主要来源于矿井地质台账,为后续矿井地质类型划分做好数据基础;构造复杂程度主要涉及到矿井中的褶皱、断层及岩浆岩,选取地质构造评价指标及经济技术指标,选用灰色关联法对指标进行筛选并对指标进行赋予权重,采用模糊综合评价法进行构造复杂程度等级的评定;煤层稳定程度评价主要选择数理统计的方法来计算煤层平均厚度、煤厚可采系数、煤厚变异系数这三个指标,从而来反映煤厚离散程度与可采性;选择趋势面分析的方法来说明煤层厚度的空间赋存特征及变化规律性,评价等级的评定选取模糊综合评价法;矿井水文地质评价主要将水文数据从数据库表单中提取出来,对数据进行计算、分析,从而按照《煤矿防治水规定》,给出评价结果;矿井瓦斯地质类型通过分析矿井瓦斯的涌出量,就可以给出最终评价结果;其他开采地质条件的评价主要涉及到煤层顶底板稳定性评价、煤层倾角与其他特殊地质条件的评价,其中煤层顶底板稳定性评价是一个难点,目前没有一个统一的评价标准,本文在借鉴文献的基础上,初步采用模糊综合评价法对煤层顶底板稳定性进行评价,但评价结果仍需后续不断验证;最终,采用“就高不就低”的原则,给出矿井地质类型划分结果。将建立好的评价体系应用到东坡矿井中,定量评价结果与原有的定性评价结果一致,说明所建立的评价体系是正确的、合理的,从而可为其他矿井地质定量划分提供一定的借鉴作用。
[Abstract]:The quantitative classification of mine geology is a basic work of coal mine geological work, which is related to the follow-up production of coal mine, so it plays a very important role. The quantitative evaluation of mine geological type mainly involves the structure of mine, coal seam, hydrology, gas, etc. On the basis of coal mine geological work regulation, coal and peat geological exploration code, DZ / T0215-2002) and coal mine water control regulation, this paper collates the evaluation data into the established geological database. Through the establishment of a set of evaluation systems, the quantitative evaluation of mine geological types is preliminarily realized. In this paper, a simple geological database is established by using Vfp database language, and the geological data involved in the mine are arranged into the geological database. The data are mainly derived from mine geological records, which provide a good data basis for the subsequent classification of mine geological types; the structural complexity mainly relates to the folds, faults and magmatic rocks in the mine, and the evaluation indexes of geological structure and economic and technical indicators are selected. The grey correlation method is used to screen the index and give weight to the index, the fuzzy comprehensive evaluation method is used to evaluate the grade of structural complexity, and the mathematical statistical method is mainly used to calculate the average thickness of coal seam in the evaluation of coal seam stability. The coal thickness mining coefficient and coal thickness variation coefficient are the three indexes to reflect the coal thickness dispersion degree and mining ability, and the trend surface analysis method is chosen to explain the spatial occurrence characteristics and variation regularity of coal seam thickness. The fuzzy comprehensive evaluation method is selected for the evaluation of evaluation grade, and the hydrological data is extracted from the database form in the evaluation of mine hydrogeology, the data is calculated and analyzed, and the evaluation results are given according to the regulations on preventing and controlling Water in Coal Mines. By analyzing the quantity of gas emission, the final evaluation results can be obtained. The evaluation of other mining geological conditions mainly involves the evaluation of the stability of coal seam roof and floor, the evaluation of coal seam inclination angle and other special geological conditions. The stability evaluation of coal seam roof and floor is a difficult point, but there is no unified evaluation standard at present. Based on the reference of literature, this paper uses fuzzy comprehensive evaluation method to evaluate the stability of coal seam roof and floor. However, the evaluation results still need to be verified continuously. Finally, the classification results of mine geological types are given by using the principle of "whether high or low". The established evaluation system is applied to Dongpo mine. The quantitative evaluation results are consistent with the original qualitative evaluation results, which shows that the established evaluation system is correct and reasonable, which can be used for reference for the quantitative division of other mine geology.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD163

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