单侯矿区地下径流赋存规律分析及煤层开采危险性评价
发布时间：2018-08-29 13:28
【摘要】：单候井田底板灰岩含水层发育,底版隔水层厚度分布不均,在灰岩水压力和采动破坏的共同作用下极铋产化突水事故。本文针对井田内主要开采煤层底板及奥灰岩含水岩特征进行研究。首先先分析采区底板灰岩的地质和水文地质特征,结果表明：对煤层开采产生主要影响的奥灰岩含水层对于1号、5号煤层具有潜质威胁。径流强,富水性不均。通过探放水试验、物探分析,对奥灰岩岩层经行详细探查,得出不同采区奥陶系灰岩岩溶发育区。其次运用三维建模软件3Dmine对采区奥灰岩含水层经行建模分析,建立模型为更精确计算区域内流场面积及体积提供了便利条件。同时以突水系数建立突水系数等值线图,根据含水层与煤层顶底板的空间关系,能直观的反应出开采煤层易发生突出危险区域。最终根据相关参数建立了底板突水及断层突水数值模拟计算模型,为使模型具有更好的适用性,采用多工况经行计算。计算结果对现有开采技术条件下安全生产具有重要的指导意义。
[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.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TD745
本文编号：2211343
[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.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TD745
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