平顶山矿区地温信息管理系统研究     

姚磊华  李竞生  杨桂仙  张壮路  黄国纲  陈遂斋  黄伯儒  刘桂平 《煤田地质与勘探》2001,29(2):36-38

介绍了平顶山矿区地温信息管理系统软件(PGTIMS1.0)的设计思路。根据平顶山矿区地温信息的特点,该信息系统软件具有地温数据库、地温图形库、地温计算系统等三个子系统,可以进行地温信息管理、地温图形的管理、地温场中任意一点的地温计算。界面友好,操作方便。为科学地预测地下温度,评价地温环境、煤炭开发与热害治理之间的矛盾打下基础。   相似文献   

巷道泄水孔疏干方法在元宝山露天煤矿中的应用     

肖石  徐文泉  田文明  杨凤芝  高凤军 《煤田地质与勘探》2002,30(2):31-32

以元宝山露天煤矿为实例,总结了对煤系上覆砂岩、泥岩互层,分布不连续的基岩含水层采用巷道泄水孔疏干方法的施工经验,提出该方法在同类地区具有推广价值   相似文献   

三维地震在铁法矿区的应用   总被引：1，自引：0，他引：1  

赵士华  程增庆  牛鹏程  田雪丰 《煤田地质与勘探》2004,32(6):52-54

以铁法矿区采区三维地震工程实践为例,论述了三维高分辨率地震勘探技术在采矿工作面合理布置等方面的作用。采掘实践证明,三维地震勘探成果的应用消除了地质风险,已回采的几个综采工作面,未发生意外及重大地质变化。   相似文献   

月亮田矿南四采区构造成因及找煤应用   总被引：1，自引：0，他引：1  

袁明刚  张发林 《煤田地质与勘探》2004,32(4):16-18

利用地质力学原理,对月亮田矿南四采区的构造发肓规律及展布特点进行综合分析,认为该区地质构造成因是由繁到简并成带状分布,从而成功地找到了经济可采煤层。   相似文献   

陕北榆神府矿区煤炭资源开发主要水工环问题及防治对策   总被引：19，自引：0，他引：19  

叶贵钧  张莱等 《工程地质学报》2000,8(4):446-455

分析了榆神府矿区煤炭资源开发所面临的主要水文、工程、环境地质问题。以水文工程地质条件研究为基础 ,给出了榆神府矿区土地沙漠化、水土流失和水环境受开采影响的预期结果。并提出了实现保水采煤的水工环技术方案和工程措施建议。  相似文献   

赞比亚谦比西铜矿水文地质条件和疏干方案研究   总被引：3，自引：0，他引：3  

徐京苑  周贵斌 《工程地质学报》2000,8(2):180-185

分析了赞比亚谦比西铜矿水文地质条件的特点及其对矿山防治水的影响。提出了与当地习惯做法不同的本中段为主疏干、放水工程非均匀布置的治水方案 ,以及保证方案得以成功实施所应采取的措施。  相似文献   

Application of statistical methods to study seasonal variation in the mine contaminants in soil and groundwater of Goa, India   总被引：1，自引：0，他引：1  

D. S. Ratha  G. Venkataraman 《Environmental Geology》1997,29(3-4):253-262

 Soil and groundwater samples were collected during two seasons, premonsoon (April 1990) and postmonsoon (December 1990), and analyzed for major elements (Na, Mg, Al, Si, P, K, Ca, Ti, Mn and Fe), trace elements (Ni, Pb, Co, Cr and Zn) and water parameters (pH, conductivity, acidity, alkalinity, hardness, Cl and SO₄). All the data were subjected to linear discriminant analysis and partial correlation analysis in order to understand the seasonal variation in the data. It was observed from the Mahalanobis generalized distance that in both soil and groundwater samples there was a large difference in the concentration level of premonsoon and postmonsoon data. Linear discriminant functions were calculated to distinguish between premonsoon and postmonsoon samples. From the partial correlation coefficient analysis of soil samples, dominance of chemical weathering and precipitation of atmospheric fallout during monsoon were inferred. In the case of the water samples, high conductivity and high hardness in the postmonsoon samples as well as atmospheric fallout of Pb and Ni during the premonsoon period was suggested from partial correlation of water samples. Received: 19 September 1995 · Accepted: 12 December 1995  相似文献   

Modification of subsidence parameters for sloping ground surfaces by the rays projection method     

D. M. Shu  A. K. Bhattacharyya 《Geotechnical and Geological Engineering》1992,10(3):223-248

Summary This paper deals with the determination of subsidence parameters on a sloping ground surface above a completely mined underground panel in an inclined seam. A rays projection method is analytically developed to derive the subsidence components on the sloping ground surface from the corresponding ones on an assumed equivalent horizontal surface through the point of the mean elevation of the sloping surface above the extracted panel. Using the derived equations, the variation of subsidence with the inclination of the ground surface is analysed. An example is given to illustrate the application of the rays projection method in predicting subsidence effects on a sloping surface.  相似文献   

复杂结构煤层储量经济可采性分析：以五家煤矿为例     

范广忱 《煤田地质与勘探》1992,20(6):25-27

基于五家煤矿多年的生产经验及大量实际资料,作者提出了一种分析经济可采储量的思路和计算方法,指出复杂结构煤层储量的工业价值并不取决于煤层储量的大小。并用这个思路和方法对该矿现存储量进行经济可采性分析,缓和了生产与储量管理间的矛盾,为矿区建设及发展提供了较科学的依据,并在实践中取得了预期效果。  相似文献   

Reductive dissolution of arsenical ferrihydrite by bacteria     

《Applied Geochemistry》2016

Mining and metallurgical processing of gold and base metal ores can lead to the release of arsenic into the aqueous environment as a result of the weathering and leaching of As-bearing minerals during processing and following disposal. Arsenic in process solutions and mine drainage can be effectively stabilized through the precipitation of ferrihydrite. However, under anaerobic conditions imposed by burial and waste cover systems, ferrihydrite is susceptible to microbial reduction. This research, stimulated by the paucity of information and limited understanding of the microbial reduction of arsenical ferrihydrite, was conducted on synthetic adsorbed and co-precipitated arsenical 6-line ferrihydrite (Fe/As molar ratio of 10/1) using Shewanella sp. ANA-3 and Shewanella putrefaciens CN32 in a chemically defined medium containing 0.045 mM phosphate concentration. Both bacteria were equally effective in their reducing abilities around pH 7, resulting in initial rates of formation of dissolved As(III) of 0.10 μM/h for the adsorbed, and 0.08 μM/h for the co-precipitated arsenical 6-line ferrihydrite samples. The solid phases in the post-reduction samples were characterized by powder X-ray diffraction (XRD), micro-XRD, scanning electron microscopy (SEM), transmission electron microscopy (TEM), electron microprobe and X-ray absorption spectroscopy (XAS) techniques. The results indicate the formation of secondary phases such as a biogenic Fe(II)–As(III) compound, akaganeite, goethite, hematite and possibly magnetite during bacterial reduction experiments. Holes and bacterial imprints measuring about 1–2 μm were observed on the surfaces of the secondary phases formed after 1200 h of reduction. This study demonstrates the influence of Fe and As reducing bacteria on the release of significant concentrations of more mobile and toxic As(III) species from arsenical 6-line ferrihydrite, more readily from the adsorbed than from the co-precipitated ferrihydrite.  相似文献