谈高速公路排水设施的重要性

论述了高速公路排水设施的重要性,分析了高速公路路基排水、边沟排水、路肩排水等各排水系统的设计方法及技巧,以期使各排水设施组成一个功能完善、排水顺畅的完整系统。     

排水路面排水功能的分析与评价

详细阐述了排水路面的排水过程及雨水渗透机理,分析了Ⅰ、Ⅱ型排水路面的水文性质,提出了路面无径流、局部径流和完全径流3种状态,并推荐在一般排水路面设计中采用不产生完全径流作为设计或验算指标。同时,还从排水路面的排水结构出发,分析了3种排水路面常用排水设施的优缺点。     

建筑排水支管与干管的连接设计与选材

介绍了排水系统的组成要素,探讨了底层排水支管与排水横干管、较高建筑物底层排水支管与干管、排水横干管与排水支管的连接设计方法,并阐述了排水管材及其配件的选择方式,旨在保证排水系统的正常运行。     

关于中央分隔带排水设计及相关问题的探讨

中央分隔带排水设计是高速公路路面排水设计的重要内容。本文针对中央分隔带排水设计,介绍了排水设计的原则和设计构思;结合直线段和超高段的排水设计,分析了不同形式的中央分隔带排水设计的优缺点;探讨了中央分隔带排水设施舍理安排施工工序的问题;最后提出了三种不同损坏情况下的解决方法,为中央分隔带排水设计及施工提供了借鉴。     

未来城镇排水体制改革的探讨

阐述了现有城镇排水系统的排水体制,并着重介绍了合流制排水体制和分流制排水体制。通过对南京市排水体制现状的分析以及排水体制对环境影响,或从运行管理等角度考虑,提出未来城镇排水体制改革的设想。     

清东陵排水系统综述

从陵区外部综合排水及地宫内部龙须沟排水两方面详细地讲述了清东陵陵区排水的方式及现状,介绍了地宫积水的排水方法,分析了陵区存在的排水问题,并提出了相应的建议。     

新颖的路面结构型式--排水性沥青路面

论述了排水性沥青路面的基本构造和排水原理,分析了排水路面的排水能力.结合上海浦东北路工程,介绍了排水路面的结构设计及新颖的路侧排水系统的构造设计,设计方案不仅施工简便,且使用效果良好,可供排水路面在国内推广应用时借鉴.     

同层排水技术在住宅设计中的应用研究

通过介绍住宅项目的卫生间排水系统设计,比较了各种同层排水技术的排水方式、特点及应用场合,阐述了同层排水技术在住宅卫生间排水中的优势.     

浅谈公路排水与城市道路排水

对公路路基路面排水和城市道路市政管线排水的概念及所包含的内容进行了阐述,从排水对象、目的、方式、出处等方面分析了公路排水与城市道路排水的区别,并对两种排水方式结合的情况作了介绍,以便设计出更加合理的排水系统.     

排水管线三维信息系统设计与实现

以"武汉市江岸区排水管线三维信息系统"项目为例,利用三维建模技术,建立了排水管网数据库,开发了排水管线三维信息系统,实现了排水管网信息化管理,为排水管网数据更新、规划与疏涝,排水设施的管理、维护和建设等工作提供数据支撑和信息化支持。该系统也为"智慧水务"的建设奠定了基础,并已经成功运用于武汉市江岸区排水管网的日常管理,提高了排水管网信息化水平。     

矿井充水及防治水

介绍了构成矿井充水的条件,从矿井回采、充水水源、充水通道三个角度分析了影响矿井充水的因素,并提出了地面防水、井下防水、疏干降压、矿井及露天矿排水的治理措施,以加强矿井水的防治工作,促进矿井安全生产。     

酸性矿井水的成因及治理

指出酸性矿井水是影响煤矿生产和安全不可忽视的因素，而且酸性矿井水的外排对环境造成了严重的污染，基于对酸性矿井水的化学氧化以及生物氧化成因的分析，系统总结了酸性矿井水的预防以及治理措施，从而确保矿井安全生产。     

区域地下水流对王河煤矿水害影响数值模拟

王河煤矿位于荥巩矿区中部,为荥巩矿区水害最为严重的矿井之一.为了分析区域地下水流对王河煤矿水害的影响,本文在分析荥巩矿区地质及水文地质条件的基础上,利用GMS建立了荥巩矿区地下水流三维数值模拟模型,确定了水文地质参数和渗流场分布情况.结果表明,荥巩矿区地下水补给量为1831.12×104m3/a,排泄量为4862.88...     

Effect of acid mine drainage on the pH of Lake Toya, Japan

The effect of acid mine drainage on the change of lake water pH is discussed in terms of acid-base balance between the incoming acid and the alkalinity present in the lake water. Comparisons are made between the pH values observed in the past and those calculated from a few assumptions made about the initial alkalinity of the lake water and the rate of acid supply to the lake. The results explain the reason why the pH of Lake Toya did not drop appreciably until recently in spite of continued introduction of acid mine drainage. The more recent sharp drop in lake water pH is attributed to the exhaustion of the alkalinity by continued discharge of acid water to the lake. The effectiveness of mine flooding in reducing acid discharge from abandoned sulphur mines is also discussed.     

南非西格里夸兰盆地某铁锰矿水文地质条件及矿坑涌水量预测

矿坑涌水是矿坑地下开采面临的首要问题,南非西格里夸兰盆地某铁锰矿属于未开采矿山,主要含水层为第四系松散岩类孔隙水含水层和基岩裂隙含水层.第四系松散岩类孔隙水含水层接受大气降水的入渗补给,主要排泄方式为蒸发和向基岩裂隙含水层补给.基岩裂隙含水,主要接受大气降水和第四系松散岩类孔隙水含水层补给,并沿导水性较好的构造裂隙径流...     

低浓度煤矿瓦斯的利用方法

基于对煤矿低浓度瓦斯利用现状的分析,系统总结了低浓度瓦斯的利用方法和途径,指出煤矿瓦斯是影响煤矿生产和安全不可忽视的因素,而且低浓度瓦斯的排放不仅造成了严重的空气污染也造成了大量的资源浪费。     

Mine water pollution in Scotland: nature, extent and preventative strategies

Scotland was one of the world's first industrialised countries, and has therefore also been one of the first countries to experience wholesale post-industrial dereliction. Water pollution arising from abandoned mines, particularly abandoned coal mines, is second only to sewage as a source of freshwater pollution nation-wide, and in many coalfield catchments it is the pre-eminent source. Most of the pollution is due to net-alkaline ferruginous waters emerging from deep mines. Scrutiny of records from 80 deep mine discharges reveals that iron concentrations in these waters are only likely to exceed 20 mg/l, and the pH to be below 6.5, where the discharge emerges within 0.5 km of the outcrop of the shallowest mined seam. The bulk of mature near-outcrop mine water discharges in Scotland have < 50 mg/l total Fe, and concentrations > 100 mg/l are only likely where a marine bed lies within 25 m of the worked seam. Where the nearest marine bed is more than 80 m above or below the seam, then the total iron will be less than 4 mg/l, and in most cases less than 1 mg/l. Net-acidic mine waters are far more rare than net-alkaline waters in Scotland, and are most commonly associated with unreclaimed spoil heaps (bings). Both net-alkaline and net-acidic discharges have detrimental effects on the hydrochemistry and biological integrity of receiving waters. Scotland has recently pioneered the use of pre-emptive pump-and-treat solutions to prevent mine water pollution, and has also experienced the successful introduction of passive treatment technology for both abandoned and active workings.     

林华煤矿充水条件分析

介绍了井田含水层的水文地质特征,并从充水水源和矿井充水途径两方面对矿井充水条件进行了分析,对矿井水害的治理具有一定的实用意义。     

The regulation and impact of eight Australian coal mine waste water discharges on downstream river water quality: a regional comparison of active versus closed mines

Water quality of rivers that received coal mine wastes from four active and three closed mines were investigated, focusing on ecologically hazardous pollutants. Zinc and nickel concentrations were highest downstream of two closed mines, particularly from the Canyon mine that closed 20 years earlier. Coal mine wastes increased nickel concentrations in waterways by an average of 25 times. The average concentration of zinc increased below mines waste discharges from 8.6 µg/L (upstream) to 83.4 µg/L (downstream). All coal mine discharges increased river salinity. Salinity increased by more than 6 times (upstream mean 101.4–741.7 µS/cm downstream). This study provides a reminder that water pollution from coal mines is a major environmental issue for both active and closed mines. The study highlights the need for more stringent and consistent environmental regulation for all mines, including key hazardous pollutants from wastes emerging from both active and closed mines.     

Long-term changes in quality of discharge water from abandoned underground coal mines in Uniontown Syncline, Fayette County, PA, USA

Changes in water quality over 25 years have been documented for discharges from an extensive network of abandoned underground coal mines in the Uniontown Syncline, Fayette County, PA, USA. A baseline study of 136 mine discharges in the syncline was conducted in 1974-1975. In 1998-2000, follow-up water flow and quality monitoring was conducted at 21 selected discharges for 2 years to assess the degree of mine water-quality improvement since 1974-1975. The data from the two periods of time were compared, with consideration of differences in measurement methods. The degree and rate of water-quality improvement was found to be highly dependent on the amount and duration of flooding in the mine voids. Water quality of discharges from the substantially flooded mine voids improved significantly, going from acidic water with high sulfate and iron concentrations in 1974-1975 to alkaline water with substantially lower sulfate and iron concentrations in 1998-2000. In contrast, the water quality in the unflooded mines showed less improvement over the 25 years between studies. The water discharging from the unflooded mines in 1974-1975 was acidic with high sulfate concentrations and in 1998-2000 was still acidic but showed somewhat lower sulfate and iron concentrations, reflecting depletion of readily available pyrite. The data obtained provide insight into the potential and rate of natural amelioration of mine water quality in different abandoned underground coal mine systems.