【作者】 陈香菱；

【导师】 魏久传； 郭建斌；

【作者基本信息】 山东科技大学 ， 矿产普查与勘探， 2009， 硕士

【副题名】以济三煤矿十二采区为例

【摘要】 本文针对济宁三号煤矿十二采区3_上、3_下煤层的安全开采,对采区3煤层顶板水文地质特征及水害威胁程度进行了详细的分析研究。通过收集采区已有的勘探资料和揭露的地质及水文地质资料,采用沉积和构造地质学分析方法,研究了3煤顶板岩性构成,主要砂层分布及其变化,砂泥岩组合特征,侏罗系下部岩性及其结构特征;通过断层分维值采用箱形覆盖法量化了采区的构造指标,合理的评价了采区的构造复杂程度;采用多因素复合分析方法及模糊聚类分析法,并结合采区首采面顶板含水层三维电法探测,预测了采区范围内顶板含水层的富水性,并进行了水文地质分区;对采区东西边界断层孙氏店断层及F8断层在自然条件下的含、导水性进行了分析,运用FLAC-3D软件对多煤层重复采动条件下的断层活化机制及覆岩运动规律进行了模拟,提出了合理的断层煤柱留设尺寸;预测了3_上、3_下煤层重复开采时的顶板两带高度;统计分析了侏罗系与煤层之间的距离,与两带发育高度相对比,确定了剩余隔水层的厚度分布,评价了侏罗系底部含水层的充水性;综合顶板岩层结构、砂岩含水层富水性及冒裂带高度等因素,对3煤项板水害威胁程度进行了评价;并依据充水含水层发育特征及充水性,预计了采区首采工作面的涌水量;研究成果对该采区3煤开采的防治水决策提供了科学依据。更多还原

【Abstract】 The text made a detailed analysis and study of the hydrogeological characteristics and dangerous degree of water disaster on the roof of the third coal seam in the mine section aiming at the safe mining of the third upper coal seam and the third subjacent coal seam in the twelfth section of the third coal mine in Jining city. The text made researches on the lithology structure on the roof of the third coal seam, the distributing of main sand seams and its variety, the compounding characteristics of the sandstone and mudstone, lithology and its structure characteristics at the bottom of the Jurassic adopting the analytical methods of the sedimentology and tectonic geology by collecting the existing exploration data and Revealed geological and hydrogeological data of the section: quantized the structure indexes of the section adopting box-covering method using fractal dimension value of the faults, and rationally evaluated the complexity degree of the structure in the section; forecasted the water abundance of the aquifers on the roof of the third coal seam in the range of the section and carved up the hydrogeological subarea adopting the methods of multiple factor analysis and fuzzy clustering analysis and combining the tridimensional electrical method exploration of the aquifers on the roof of the third coal seam in the first working face of the section; analyzed the water containing and transmitting of the Sunshidian fault and F8 fault in the east and west boundaries of the section under natural condition, simulated the activation mechanism of the faults and movement law of the covering rocks under repeating mining of multiple coal seams using the software of FLAC-3D, and brought forward the rational remained dimensions of coal block of the faults; forecasted the twain zone height of the roof under repeating mining of the third upper coal seam and the third subjacent coal seam; analyzed the space between the Jurassic and the coal seams, confirmed the thickness distributing of the remainder confining stratum in contrast to the twain zone height, and evaluated the water filling of the aquifers at the bottom of the Jurassic; evaluated the dangerous degree of water disaster on the roof of the third coal seam integrating the factors of the terrane structure of the roof, the water abundance of the aquifers of sandstone, the twain zone height and so on; estimated the water inflow in the first working face of the section according to the growth characteristics and water filling of the water filling aquifers; the research production provides scientific gist for the water prevention and cure decision of mining the third coal seam in the section.更多还原