【摘要】：單候井田底板灰?guī)r含水層發(fā)育,底版隔水層厚度分布不均,在灰?guī)r水壓力和采動(dòng)破壞的共同作用下極鉍產(chǎn)化突水事故。本文針對(duì)井田內(nèi)主要開采煤層底板及奧灰?guī)r含水巖特征進(jìn)行研究。首先先分析采區(qū)底板灰?guī)r的地質(zhì)和水文地質(zhì)特征,結(jié)果表明：對(duì)煤層開采產(chǎn)生主要影響的奧灰?guī)r含水層對(duì)于1號(hào)、5號(hào)煤層具有潛質(zhì)威脅。徑流強(qiáng),富水性不均。通過探放水試驗(yàn)、物探分析,對(duì)奧灰?guī)r巖層經(jīng)行詳細(xì)探查,得出不同采區(qū)奧陶系灰?guī)r巖溶發(fā)育區(qū)。其次運(yùn)用三維建模軟件3Dmine對(duì)采區(qū)奧灰?guī)r含水層經(jīng)行建模分析,建立模型為更精確計(jì)算區(qū)域內(nèi)流場(chǎng)面積及體積提供了便利條件。同時(shí)以突水系數(shù)建立突水系數(shù)等值線圖,根據(jù)含水層與煤層頂?shù)装宓目臻g關(guān)系,能直觀的反應(yīng)出開采煤層易發(fā)生突出危險(xiǎn)區(qū)域。最終根據(jù)相關(guān)參數(shù)建立了底板突水及斷層突水?dāng)?shù)值模擬計(jì)算模型,為使模型具有更好的適用性,采用多工況經(jīng)行計(jì)算。計(jì)算結(jié)果對(duì)現(xiàn)有開采技術(shù)條件下安全生產(chǎn)具有重要的指導(dǎo)意義。
[Abstract]:The limestone aquifer of the bottom plate of the single weatherfield is developed and the thickness of the bottom layer is unevenly distributed. Under the combined action of limestone water pressure and mining failure, the water inrush accident of bismuth production is carried out. In this paper, the characteristics of water-bearing rock in main mining seam floor and Ordovician limestone in the mine field are studied. Firstly, the geological and hydrogeological characteristics of limestone in the floor of the mining area are analyzed. The results show that the Ordovician aquifer, which has a major influence on coal seam mining, has potential threat to coal seam No. 1 and No. 5. Strong runoff, uneven water rich. By means of water exploration and geophysical analysis, the karst development areas of Ordovician limestone in different mining areas are obtained through detailed exploration of the Ordovician strata. Secondly, the three-dimensional modeling software 3Dmine is used to model and analyze the hydrological behavior of the Ordovician aquifer in the mining area, which provides a convenient condition for more accurate calculation of the area and volume of the flow field in the area. At the same time, according to the spatial relationship between aquifer and coal seam roof and floor, the contour map of water inrush coefficient is established. Finally, a numerical simulation model of water inrush from bottom plate and fault is established according to the relevant parameters. In order to make the model more suitable, the meridian calculation under multiple working conditions is adopted. The calculated results are of great significance to the safety production under the existing mining technology.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TD745

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