Contemporary Reviews of Mine Water Studies in Europe,Part 3

Europe was once the most important mining region in the world and nearly every European country has remnants of historic and even pre-historic mining sites. Though the importance of mining activities in most European countries declines, the abandoned sites are still there and can cause environmental dangers as well as technological challenges. On the basis of selected European countries and case studies, these dangers and challenges are described and potential solutions are illustrated.     

Contemporary Reviews of Mine Water Studies in Europe, Part 2

Abstract.   Europe once was the most important mining region in the world and nearly every European country has remnants of historic and even pre-historic mining sites. Though the importance of mining activities in most European countries declines, the abandoned sites are still there and can cause environmental dangers as well as technological challenges. On the bases of selected European countries and case studies, these dangers and challenges are described and potential solutions are illustrated.     

Contemporary Reviews of Mine Water Studies in Europe,Part 1

Abstract.    Europe once was the most important mining region in the world and nearly every European country has remnants of historic and even pre-historic mining sites. Though the importance of mining activities in most European countries declines, the abandoned sites are still there and can cause environmental dangers as well as technological challenges. On the bases of selected European countries and case studies, these dangers and challenges are described and potential solutions are illustrated.     

Water Cover Over Mine Tailings and Sludge: Field Studies of Water Quality and Resuspension

Flooding is considered one of the best available technologies for long term storage of acid generating mine waste when suitable site-specific conditions exist. There is, however, a concern that oxidation may still occur. In cases where lime neutralization sludge and reactive sulfide tailings are co-disposed in the tailings pond, wind-induced waves could resuspend the waste and negatively impact the quality of the water cover. Studies were undertaken at the Noranda Inc. Heath Steele Lower Cell tailings impoundment, located in northeastern New Brunswick, Canada, 50 km northwest of city of Miramichi. The stored material in the cell consisted of unoxidized tailings with small amounts of sludge. The 90 ha impoundment acted as a polishing pond, prior to the discharge of final effluent. The pond was keptalkaline (pH of 8.5-10.5) in order to meet regulated discharge limits. On some windy days when the Lower Cell experienced turbulent water conditions, the final effluent exceeded the suspended solids water quality standard of 25 mg/L. The dry mass of suspended sediment measured in 1999 ranged from 1.5 to 434 mg with relatively more material (> 100 mg) being suspended under shallow water cover (= 1 m). Both x-ray diffraction and scanning electron microscopy analyses indicated that the suspended material was mostly lime neutralization sludge and other material composed primarily of calcite and brucite and coatings of aluminum, iron, zinc and manganese hydroxides. Solubility considerations of the carbonate system confirmed that the water cover was supersaturated with respect to calcite. The results suggest that sludge and tailings re-suspension and precipitation of solid phases in the water cover likely combined to produce the observed, occasionally high total suspended solids concentration.     

Using Water Injection to Prevent Shaft Failure in the Jining No. 3 Coal Mine,China

Mine Water and the Environment - Water injection into aquifers is a new approach for preventing shaft failure by stabilizing water levels. A series of injection tests was performed in the Jining...     

Correction to: An Overview of Priority Pollutants in Selected Coal Mine Discharges in Europe

Mine Water and the Environment - Correct values for radium have been rewritten in Table 1 and Table 2. Correct radium units in Figure 2(c) are Bq/L (Becquerel per liter). The same applies to...     

鄂尔多斯新街矿区台格庙3~#矿井涌水量预测

为了对鄂尔多斯新街矿区台格庙3#井田矿井涌水量进行预测,首先对台格庙3#井进行地质勘探,得出该矿井详细的地质资料,然后通过分析矿井充水因素,结合地质资料采用大井法进行理论计算,得出矿井涌水量,为矿井防水工作提供了理论依据。     

水化学资料在煤矿突水水源判别中的应用

文章介绍了邢台矿区主要含水层的水质特征,并对水化学分析资料在含水层突水水源判别应用中的常见问题进行了探讨.     

浅谈如何做好煤矿防治水工作

分析了目前煤矿防治水工作的特点，针对工作中存在的问题，提出了水害防治工作的对策。     

Introduction to Special Issue on Mine Water Inrushes: Risk Assessment,Mitigation, and Prevention

Mine Water and the Environment - Water inrush is a hazard that affects safety and production in many coal mines in China. Chinese mining engineers and scientists have made significant progresses in...     

矿井瞬变电磁法在新驿煤矿探水中的应用

为了防止生产过程中钻孔突水事故发生,保证采煤工作安全,应用瞬变电磁法,在新驿煤矿已掘进巷道内沿煤层和煤层底板向可疑位置发射电磁波,探测分析工作面钻孔确切位置及富水情况.通过探测发现工作面钻孔内含水情况,瞬变电磁法能够准确探测工作区域水文地质情况,为煤矿防治水提供可靠依据.     

注浆堵水技术在石槽村煤矿副立井施工中的应用

为合理解决石槽村煤矿副立井井筒施工中穿含水层问题,为井筒施工创造有利条件,应用定向钻井和综合注浆技术,井筒施工前对地面预注浆过程采用S孔定向钻井,通过设置合理的技术参数,应用合理的注浆工艺、注浆材料及注浆设备,使注浆和井筒掘砌同时进行。工程实践表明：12个强含水层总涌水量从391 m3/h减小到5.7 m3/h,实现了打干井的目的,堵水效果明显。     

Using Multiple Methods to Predict Mine Water Inflow in the Pingdingshan No. 10 Coal Mine,China

To ensure safe mining of the no. 2 coal seam in the Pingdingshan No. 10 coal mine, three methods (analogue, big well, and numerical simulation) were used to forecast mine water inflow and their performance. The big well method predicted the largest water inflow: 233.8 m³/h in the ?230 m level and 281.1 m³/h in the ?300 m level. The numerical simulation predicted the least inflow, 205.7 and 228.6 m³/h respectively for the 230 and ?300 m levels; this was closest to the measured values. Based on this work, it appears that combining numerical simulations with other methods are a good way to accurately forecast mine water inflow.     

新桥煤矿矿井水深度处理技术及应用

针对矿井水水质特点,在矿井水原有处理系统的基础上,新桥煤矿对矿井水进一步进行了深度处理,满足了矿井生活用水需求,解决了矿井生活用水因水源井逐步枯竭引起供水不足的难题,减少了矿井废水排放量。     

抚顺西露天矿浅部边坡地下水灾害的防治

抚顺西露天矿矿坑周边地区水系较多,地下水补给充分,加之岩体构造复杂,采用单一疏干方法,效果不明显。目前抚顺西露天矿根据地下水赋存条件,进行了水文地质分区,应用截、疏联合防治浅部地下水,取得较好的效果,提高了边坡的稳定性。