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介绍某铀矿床各含水层的特征,分析矿坑充水因素,深入探讨前人矿坑涌水量预测中存在的问题。通过研究RQD与深度的关系及RQD与渗透系数的关系,对水文地质比拟法预测矿坑涌水量的公式进行修正,并建立了适合该矿床矿坑涌水量预测的水文地质比拟法。 相似文献
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通过对石磙坝锰矿区水文地质条件的深入调查,确定了该矿区是以大气降水、地表河水为充水水源,以基岩裂隙为充水通道的矿床。采用水文地质比拟法和解析法进行矿坑涌水量预测,为矿山下一步开采降排水设计提供依据。 相似文献
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系统分析了哈西亚图多金属矿区地质背景与水文地质特征,认为矿坑主要充水水源为含水带裂隙承压水,其补给来源为大气降水。根据现场水文地质抽水试验结果,应用大井法对矿坑涌水量进行了预测,并采用大气降水渗入量的计算结果对预测的涌水量进行了验证,结果表明,涌水量预测值与验证值相近,可以作为矿床开采涌水量的依据。 相似文献
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大井法预测矿坑涌水量 总被引:7,自引:1,他引:6
矿坑涌水量预测是矿区勘查阶段水文地质工作的主要任务之一。王家大沟金矿是以裂隙含水层充水为主的矿床,在矿区水文地质调查、抽水试验的基础上,用大井法对矿坑涌水量进行了预测。 相似文献
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根据第一手资料,分析了铜峪沟铜矿区水文地质条件及矿坑充水因素,概化了边界类型,用2种不同的方法预测了矿坑涌水量。 相似文献
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本文将时间序列多层递阶预报方法用于矿区地下涌水量的动态分析,对矿坑涌水量进行逐月平均量的预测,经与实际资料对比,其结果令人满意. 相似文献
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Gurdeep Singh 《Mine Water and the Environment》1988,7(3):49-59
The coal mining industry has to dispose of millions of litres of water every day. This water forms main source of various water supplies in the thickly populated coalfields. In this study, water samples from major coalfields were collected and analysed in an attempt to reflect the impact of mining on water quality in these areas. Various physico-chemical characteristics of mine waters as analysed include pH, alkalinity/acidity, specific conductivity, hardness, total solids, sulphate, chloride iron and trace materials. This investigation reveals that mining activity, markedly pollute the mine waters. Mine waters are of highly complex nature and of widely varying composition. These are nearly neutral, alkaline, mildly acidic and highly acidic in nature. Special emphasis on water quality deterioration due to acid mine drainage which result in significant concentration levels of tract (toxic) metals, is given. A classification of these mine waters is also made. 相似文献
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The paper describes a bio-chemical investigation in the laboratory to identify various factors which promote the formation of acidic and ferruginous mine water. Biochemical reactions responsible for bacterial oxidation of Iron pyrites are described. The acidic and ferruginous mine water are not only responsible for the corrosion of mine plant and equipment and formation of scales in the delivery pipe range, but also pollution of the mine surface environment, thus affecting the surface ecology. Control measures to mitigate the adverse effects of acid mine discharge include the protection of mining equipment and prevention of formation of acid and ferruginous water. Various control measures discussed in the paper are blending with alkaline or spring water, use of neutralising agents and bactericides, and various types of seals for preventing water and air coming into contact with pyrites in caved mine workings. 相似文献
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针对传统的露天矿采剥运距计算存在较大误差的问题,提出了一种基于三角剖分原理的采剥加权平均运距计算方法,通过把台阶不规则区域划分为若干三角单元,分别计算各三角单元从采掘点重心到卸载点重心的运距,并将以三角单元面积为权重的加权平均运距作为采剥综合运距。经实践应用表明,该方法能够显著提高运距计算精度,对露天矿山企业生产成本管控具有重要意义。 相似文献
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为提高露天矿土石方量的计算精度,在研究分析方格网法和三角网法2种常用方法的计算原理、适用条件的基础上,以准东地区某露天工程为研究背景,对比分析了不同地形地貌条件、不同测点间距、不同方格网宽度等条件对土石方计算精度的影响.研究结果表明:测点间距和方格网宽度与计算结果偏差呈正向相关性;方格网法适用于地形地貌变化不大的测区,... 相似文献
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掌握矿体空间分布特征并准确估计矿体储量,有利于提高矿山生产效率、降低生产成本。对矿山的生产具有重要的意义。本文利用断面法和地质块段法分别对获各琦铜矿的储量进行计算,并对结果进行了对比分析。 相似文献