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以大量的水文地质资料和抽水试验以及相邻矿井放水试验实测数据,对元宝山露天煤矿基岩含水层的可疏必及可利用巷道疏干的方法,进行了分析,论证与研究,通过放水试验,初步证明元宝山露天矿基岩含水层采用巷道疏干的方法是可行的。 相似文献
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元宝山露天煤矿疏干降水管井洗井方法探讨 总被引:2,自引:1,他引:1
元宝山露天煤矿系特大型充水矿床,疏干排水量居国内露天矿之首.本文通过四种洗井方法所获结果对比说明,疏干降水管井增加出水量的有效洗井方法为活塞、盐酸联合洗井方法. 相似文献
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矿区疏干地下水三维流与二维流对比研究 总被引:1,自引:0,他引:1
分别从解析解、数值解和电网络三个方面,对三维流和二维流模型求解方法和结果进行了理论分析和对比,讨论了在参数拟合、水量水位预测方面的差别及处理对策。最后给出元宝山露天煤矿疏干排水三维流模型与二维流模型的计算实例及分析,并提出了矿区大降深、大流量疏排地下水属明显的三维流过程,必需用三维流模型进行模拟计算。 相似文献
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许春枝 《水文地质工程地质》1981,(1)
去年煤炭部地质局在内蒙平庄召开了元宝山露天矿水文地质技术讨论会。会议邀请了地质部、冶金部、电力部、化工部以及南京大学等单位的水文地质、工程地质方面的专家和煤炭系统有关单位人员共计65人。会议中,辽宁省煤田地质勘探公司104队全面介绍了元宝山露天矿地质、水文地质和工程地质条件以及以往的勘勘成果,东北电力勘测设计院金福录工程师应邀介绍了元宝山电厂水源勘探情况。到会 相似文献
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现有的井群疏干、地下巷道集中排水、地表地下联合疏干方法都已比较成熟有效,但当矿区的地下水系统由非均质各向异性、低渗透性含水介质组成时,井群疏干受到低渗透性含水层和高倾角裂隙的制约,无法达到良好的疏干效果。地下巷道集中排水方法一次性工程投入很大,含水层富水性极度不均时易造成许多不必要的浪费;地表地下联合疏干方法的地面部分对矿坑边坡安全和采场作业都会造成一定的影响。结合马钢集团南山矿业公司高村露天铁矿的地下水疏干技术研究专项,调查分析了矿区地质和水文地质条件,含水介质特点及含水层富水特征,借助GMS软件建立了高村矿区地下水水流模型,提出了辐射井疏干技术的设想,并依据前人提出的"渗流-管流耦合模型"模拟辐射井,完成了此类矿山的地下水辐射井疏干方法的初步研究。 相似文献
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李波 《华北地质矿产杂志》2014,(2):106-107,111
为制定疏干措施,防止矿井突水淹井事故的发生,煤矿必须对矿井涌水量进行较为准确的预测,但矿井涌水量受大气降水、地表水、水文地质条件、开采情况等多种因素的影响,往往呈现出较大随机性和波动性。用灰色理论残差GM(1,1)模型对原始数据进行处理,可有效弱化其随机性,规避各种复杂因素的影响,该模型机动灵活,预测结果精度高,为矿井设计的最优化选择提供了科学依据。 相似文献
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Michael James Friedel Oderson Ant?nio de Souza Filho Fabio Iwashita Adalene Moreira Silva Sueli Yoshinaga 《Hydrogeology Journal》2012,20(6):1061-1080
It is not possible, using numerical methods, to model groundwater flow and transport in the fractured crystalline rock of northeastern Brazil. As an alternative, the usefulness of self-organizing map (SOM), k-means clustering, and Davies-Bouldin techniques to conceptualize the hydrogeology was evaluated. Also estimated was the well yield and groundwater quality across the Juá region. This process relies on relations in the underlying multivariate density function associated with a sparse local set of hydrogeologic (electrical conductivity, geology, temperature, and well yield) and a complete regional set of airborne geophysical (electromagnetic, magnetic, and radiometric) and satellite spectrometric measurements. Resampling of the regional well yield and electrical conductivity estimates provides sufficient resolution to construct variograms for stochastic modeling of the hydrogeologic variables. The combination of these stochastic maps provides a way to identify potential drilling targets for future groundwater development. The data-driven estimation approach, when applied to available airborne electromagnetic and water-well hydrogeologic measurements, provides a low-cost alternative to numerical groundwater flow modeling. In addition to fractured rock environments, the alternative modeling framework can provide spatial parameter estimates and associated variograms for constraints to improve the traditional calibration of equivalent groundwater-porous-media models. 相似文献
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水文地质参数寻优结果的好坏会直接影响到地下水数值模拟的精度,而参数寻优结果很大程度上取决于寻优方法的选择。粒子群算法是一种基于群智能的随机全局寻优方法,算法的缺陷是后期搜索效率低劣。基于随机寻优算法的混合策略,引入有效的约束处理手段和粒子群算法惯性因子的动态非线性调整技术,有机融合粒子群算法与Hooke-Jeeves方法,提出一种适用于水文地质参数反演的HJPSO混合算法。应用研究表明,HJPSO混合算法在参数反演计算中求解精度高、收敛速度快、寻优性能强,是一种值得推广的水文地质参数识别方法。 相似文献
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Controls on groundwater flow in the Bengal Basin of India and Bangladesh: regional modeling analysis 总被引:2,自引:0,他引:2
Groundwater for domestic and irrigation purposes is produced primarily from shallow parts of the Bengal Basin aquifer system (India and Bangladesh), which contains high concentrations of dissolved arsenic (exceeding worldwide drinking water standards), though deeper groundwater is generally low in arsenic. An essential first step for determining sustainable management of the deep groundwater resource is identification of hydrogeologic controls on flow and quantification of basin-scale groundwater flow patterns. Results from groundwater modeling, in which the Bengal Basin aquifer system is represented as a single aquifer with higher horizontal than vertical hydraulic conductivity, indicate that this anisotropy is the primary hydrogeologic control on the natural flowpath lengths. Despite extremely low hydraulic gradients due to minimal topographic relief, anisotropy implies large-scale (tens to hundreds of kilometers) flow at depth. Other hydrogeologic factors, including lateral and vertical changes in hydraulic conductivity, have minor effects on overall flow patterns. However, because natural hydraulic gradients are low, the impact of pumping on groundwater flow is overwhelming; modeling indicates that pumping has substantially changed the shallow groundwater budget and flowpaths from predevelopment conditions. 相似文献
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水文地质数据数理统计程序设计与实现 总被引:1,自引:0,他引:1
应用数理统计方法可提取大量随机水文地质数据的重要特征。本文设计的程序实现了对大量随机数据的统计计算、确定元素含量背景值及概率分布型式的检验等水文地质工作中常用统计方法。 相似文献
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基于区域分解法的水文地质参数寻优研究 总被引:2,自引:0,他引:2
在建立地下水流模型的过程中,水文地质参数寻优一直是较为复杂的步骤之一,具体难点包括寻优方法的取用,为保持总体平衡所引起的参数峰值异常以及总体寻优需要大量的计算机时等问题。本文运用区域分解法(Domain Decomposition method,DDM)的基本思想,将整个区域的参数寻优问题分解为各参数分区内的子域问题求解,通过寻找整个区域上的Nash均衡最终获得各子域上的最优参数。实验算例及其结果证明应用该方法实现水文地质参数自动寻优,不但具有高度的可靠性,同时优化问题的规模减小。此举不但减少了求解过程所需要的CPU时间,而且提高了参数拟合度。 相似文献
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A critical need exists for site-specific hydrogeologic data in order to determine potential hazards of induced seismicity and to manage risk. By 2015, the United States Geological Survey (USGS) had identified 17 locations in the USA that are experiencing an increase in seismicity, which may be potentially induced through industrial subsurface injection. These locations span across seven states, which vary in geological setting, industrial exposure and seismic history. Comparing the research across the 17 locations revealed patterns for addressing induced seismicity concerns, despite the differences between geographical locations. Most induced seismicity studies evaluate geologic structure and seismic data from areas experiencing changes in seismic activity levels, but the inherent triggering mechanism is the transmission of hydraulic pressure pulses. This research conducted a systematic review of whether data are available in these locations to generate accurate hydrogeologic predictions, which could aid in managing seismicity. After analyzing peer-reviewed research within the 17 locations, this research confirms a lack of site-specific hydrogeologic data availability for at-risk areas. Commonly, formation geology data are available for these sites, but hydraulic parameters for the seismically active injection and basement zones are not available to researchers conducting peer-reviewed research. Obtaining hydrogeologic data would lead to better risk management for injection areas and provide additional scientific evidential support for determining a potentially induced seismic area. 相似文献