Selection and optimization of mine pumping systems

The paper describes various factors which affect the design of a pumping system for a mining layout. Variation of the make and quality of mine water with respect to mine layout and developments are important factors to be considered in the design of a pumping system. The main pumping duties which can be assigned to a mine dewatering system are specified in terms of delivery rate, total head and the quality of mine water. The physical effects of undissolved solids on the wear and tear of the pump are outlined together with the possible solutions. Various inter-related design factors considered in the paper are standage capacity, water make, load factor, cost of minimizing friction losses, centralized pumping versus individual pumps delivering directly to the surface. Types of pump available together with their operational characteristics have been discussed in relation to selection and optimization of mine pumping systems. Typical case histories are described that indicate the necessity for advanced planning in solving specific pumping problems.     

A study of acid and ferruginous mine water in coal mining operations

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.     

南山矿压风机房水冷却系统变频改造

介绍了鹤矿集团南山煤矿压风机冷却水泵设备使用的变频装置,分析了变频设备产生节电、节水的经济效益,延长了设备使用周期。     

矿山抢险排水概要

从矿山发生淹井事故后,如何估算矿井水量、确定抢险排水参数、选用设备、适应不同矿井的安装条件等方面进行了论述,介绍了潜水电泵和离心式水泵用于斜井抢险排水的快捷系统。     

基于WinCC组态软件的泵房自动化控制系统

介绍了一种基于WinCC的泵房自动化控制系统、工作原理、功能实现、设备配置及监控系统,实现了矿井涌水量的自动控制和水泵、电机等设备的安全监测控制,使中央泵房实现远程监控、无人值守,提高了矿井排水系统的工作效率和安全性。     

矿井主排水设备的经济运行

矿井排水设备消耗的电能占矿井总耗能量的比重很大,其运行经济性对矿井生产成本具有重要影响。通过对煤矿主排水设备运行特性的分析,提出经济运行的措施和优化方案,以节约能源,降低生产成本。     

矿井水循环利用研究与实践

针对我国西部矿区的矿井水资源循环利用率低的现状,结合王家塔矿井的水文地质条件和生产实际,制订了矿井水循环利用方案,并在该矿得到成功应用。首先将井下产生的污水注入采空区,通过改造3104水仓、增敷供排水管线和安设恒压水泵,利用采空区储水能力和巷道高差,实现污水在采空区内自流的过程中滤化,然后将过滤后的清水收集至3104清水仓,最后利用恒压供水泵把过滤的清水用于采掘工作面的设备冷却、消防除尘,多余的清水外排至地面。该方案的实施实现了矿井降本增效的目的,也实现了煤炭资源开采条件下的水资源保护利用。     

矿山排水节能技术与实践

阐述了矿山排水节能的意义和方法,指出了优化矿山排、供水方案的节能作用;依据唐安煤矿主排水泵性能参数的测定计算,提出了以提高排水系统效率为主的各种排水节能措施,取得了较好的经济和社会效益,研究成果可在类似矿区推广应用。     

煤矿井下中央水泵房自动化控制系统设计

介绍了以PLC为控制核心的泵房自动化控制系统、工作原理、功能实现、设备配置及视频监控系统,实现了矿井涌水量的自动控制和水泵、电机等设备的安全监测控制,使中央泵房实现远程监控、无人值守,提高了矿井排水系统的工作效率和安全性。     

Water regime control in mines and quarries in the USSR coal industry

The paper briefly reviews the mine water problems associated with coal mining industry in the USSR. Statistics regarding quantities of water discharged from surface and underground coal mines are given together with the pumping heads, range of water problems at a coal face and the quality of mine water. Ground water control systems are described which include surface preventive measures, surface mine water control techniques and underground mine dewatering methods. Recommendations for further investigations for solving a variety of mine water control problems are included.     

A Historical Perspective of Diamond Mine Dewatering Design and Guidelines for a Modern Diamond Mine

Dewatering is an important consideration in kimberlite mining. Early underground mines used water tunnels connected by passageways to divert rainwater and near-surface groundwater from the mine workings. Shafts with multi-stage pumping levels were used to pump water from the deepest mine sections. At the Finsch mine, a 650 m deep water ring-tunnel (combined with a conveyor belt level) and deep pumping boreholes were used to dry the initial block cave to 720 m below the surface. Other mines use rings of surface-pumped dewatering wells (e.g. the Letlhakane and Orapa mines in Botswana). This paper summarises the techniques used to manage pit and underground water, its links with mud rush occurrence, and lessons learned over the last 120 years. The hydrogeology of typical kimberlite mines and various ways to keep water away from the mine workings are described. The paper concludes with a good practice dewatering design and water management strategy for modern mines.

     

一种煤矿井下中央水泵房的自动控制系统

针对目前煤矿井下中央水泵房存在的弊端,介绍一种基于PLC的中央水泵房自动控制系统的软硬件设计与配置,可实现矿井涌水量的自动控制和水泵、电动机等设备的安全监测控制,并使中央水泵房实现远程监控、无人值守,提高了矿井生产的安全性和自动化程度,降低了运行成本,延长了设备使用寿命,具有较好的经济效益。     

模糊综合评价在矿山设备选型中的应用

矿山设备是矿山生产的技术基础，较好地选择和使用，能使其充分发挥效能。文中运用了模糊综合评价数学模型对矿山设备作出了合理的评价，为优化矿山设备选型提供了依据。     

某酸法地浸铀矿山全采区地下水流场变化数值模拟

区域流场是地下水中溶质迁移的基础,其形态特征是判断地浸铀矿山地下水环境影响范围的前提,准确预测区域流场的变化情况对指导地浸铀矿山生产实践有着极其重要的作用。本文以我国北方某地浸铀矿山为研究对象,利用数值模拟方法再现了该地浸铀矿山生产以来全采区地下水流场变化情况。模拟结果表明,生产井的抽注活动是区域地下水流场变化的根本原因,采区内部由于生产井的抽注活动,注液井周围会形成小范围的水头升高区,形成点源,抽液井周围则形成水头下降区,成为点汇;但生产期间总抽液量大于总注液量,全采区整体上形成了明显的水头下降区,区域降落漏斗的形成可以有效控制浸出液中溶解组分的迁移范围。结合含矿含水层地下水pH、铀、硫酸根背景值及采区监测井监测数据,进一步证实了区域流场形态对地下水中溶解组分迁移范围的控制作用,得出该地浸铀矿山的地下水环境影响控制在了150 m以内。     

矿山在用排水泵效率检验方法的研究

分析了我国矿山排水系统安全检验现有规定中存在的问题,通过分析和数学推导,提出了一种在矿山使用现场检验排水泵电动机输出功率和效率的新方法。     

矿井主排水泵流量监测方法探讨

矿井主排水泵实现在线监测的难点在于常规流量计不能长期使用于矿井恶劣水质中 ,利用堰式流量计和液位传感器可解决这一问题     

Closure of German Hard Coal Mines: Effects and Legal Aspects of Mine Flooding

Following the closure of the last hard coal mines in Germany, pumping is no longer necessary. However, the resulting rise of mine water can affect the environment. Laws have been enacted at the European and national level to protect properties. Within the framework of the approval procedure, it must be determined whether the cessation of pumping may cause unacceptable effects, including water pollution. With regard to water protection, the European Union has issued the Water Framework and Groundwater Directives, which have been implemented into German national law. These contain the prohibition of deterioration and the requirement for improvement, with the aim of maintaining or achieving good ecological and chemical status. However, before the target mine water level is reached, the water does not need to comply, since although the pumps are switched off, no mine water is being discharged. This also rules out permit requirements, which only go into effect when the target mine water level has been reached and mine water is discharging. Obviously, however, detailed planning before then is necessary.

     

矿用潜水泵在煤矿抗灾强排系统中的应用

 煤矿井下水害不仅直接威胁煤矿的安全生产,且严重威胁着矿工的生命安全。根据多年对潜水泵排水系统的研究及煤矿抗灾泵站的设计经验,提出采用卧泵加潜水泵排水方案替代传统的井底中央泵房加防水闸门方案的观点,大大提高了矿井抵抗水灾的能力,使防治水工作由被动堵水变为主动防治水。实践证明,对有突水淹井危险的矿井,卧泵加潜水泵排水系统是解决矿井正常排水和抗灾抢险排水的有效方案。     

煤矿井下主排水系统的设计与实现

针对煤矿井下主排水系统人工就地操作的问题,介绍了一种基于PLC的水泵控制方式,该系统选用PLC为控制核心,通过液位、压力、流量、温度等传感器采集水泵运行参数,对水泵及管路阀门、高压开关等设备进行控制与监测,使设备在无人干涉的情况下实现了多台水泵和关联设备的联动运行和参数采集、状态监测、数据处理、故障报警、报表查询等,使设备达到最佳运行状态,满足了煤矿生产环境及安全生产的需要,提高了煤矿自动化水平,降低了劳动力强度,为实现煤矿数字化矿井打下良好的基础。     

黄泥-碎石泵送胶结充填料性能研究及应用

以破碎的井下废石为充填骨料,黄泥为黏结材料,水泥为胶结材料,并加入一定量的水搅拌均匀制成黄泥-碎石泵送胶结充填料,通过7种配比的室内试验和井下现场泵送充填配送试验,研究其力学性能和泵送性能。研究表明该充填料具有泵送浓度高、初凝快、强度大、可泵性好、对管道磨损小等优点。取得了较好的应用效果。