Groundwater Rebound in the Leicestershire Coalfield

The Leicestershire coalfield has been mined for at least eight hundred years, the last deep mine closing in 1991. The earliest shallow mines on the exposed coalfield are not recorded on plan, but were later connected to the deeper workings in many seams. In order to protect the last deep mines, pumping was maintained from the abandoned mines to the north.
Water-table rebound was observed prior to closure, and is now affecting the surface. Increased emissions of poor-quality water into low-discharge surface water-courses are predicted. Renewed subsidence has implications for roads, services and property. Rising water levels will affect old opencast excavations and waste disposal sites.
Fieldwork and abandoned mine plan inspections have demonstrated renewed subsidence and evidence of increased emissions in those low-lying areas of the exposed coalfield which are believed to be most at risk.     

型煤催化气化活性研究

本文用管式反应器研究了五台气煤制成的型煤与ＣＯ２气化反应活性。结果表明：Ｎａ２ＣＯ３和Ｋ２ＣＯ３都显示了较好的催化作用，且Ｋ２ＣＯ３的作用优于Ｎａ２ＣＯ３。添加这两种催化剂能使气化速率提高，活化能降低。同时发现两种催化剂的添加量均存在一极限量。     

Mercury emissions from coal combustion: modeling and comparison of Hg capture in a fabric filter versus an electrostatic precipitator

Mercury emissions from coal combustion must be reduced, in response to new air quality regulations in the U.S. Although the most mature control technology is adsorption across a dust cake of powdered sorbent in a fabric filter (FF), most particulate control in the U.S. associated with coal combustion takes the form of electrostatic precipitation (ESP). Using recently developed models of mercury adsorption within an ESP and within a growing sorbent bed in a FF, parallel analyses of elemental mercury (Hg(0)) uptake have been conducted. The results show little difference between an ESP and a FF in absolute mercury removal for a low-capacity sorbent, with a high-capacity sorbent achieving better performance in the FF. Comparisons of fractional mercury uptake per-unit-pressure-drop provide a means for incorporating and comparing the impact of the much greater pressure drop of a FF as compared to an ESP. On a per-unit-pressure-drop basis, mercury uptake within an ESP exhibited better performance, particularly for the low-capacity sorbent and high mass loadings of both sorbents.     

一种新颖的人脸图像超分辨率技术研究

本文针对基于学习的人脸图像超分辨率技术进行研究,采用多分辨率的幻觉脸算法。针对Baker方法（文献[1]）建立的图像金字塔提取高频细节不够丰富的缺点,采用Kirsch算子提取高频特征。它与Baker的一阶、二阶灰度算子结合,能够提取更多的图像信息,使得匹配更为准确。另外将流形学习中的LLE算法思想引入匹配复原过程中,使复原结果获取更完备的高频信息。实验结果表明,本文预测得到的先验模型更为准确,使得最终复原的人脸图像具有更好的视觉效果。     

中国能源清洁低碳化利用的战略路径

中国的工业化进程已取得举世瞩目的成就,国内生产总值跃居全球第二。与此同时,能源消费总量、碳排放总量及增量等多个指标也连续多年位居全球第一,以煤为主的能源消费结构带来了严重的环境问题。从全球能源演变过程看,能源清洁低碳化利用是发展的大趋势,也是解决气候变暖、生态破坏等重大环境问题的必由之路。为此,系统阐述了中国能源消费的现状及能源清洁低碳化利用的必要性,探讨了推进能源清洁低碳化的措施,并分析了煤炭、石油、天然气、非化石能源等在我国能源中短期清洁低碳化利用战略中的地位。结论认为:(1)我国需要在优化产业结构、控制能源消费总量、改进能源消费结构等多个方面共同努力以推动能源的清洁低碳化;(2)结合我国资源禀赋及消费现状,煤炭的清洁化利用是现实选择,大力发展非化石能源是战略性选择,石油作为动力燃料主力的地位中短期不会动摇,而天然气在我国能源清洁低碳化过程中将发挥重要的桥梁作用。     

煤发热量推导含碳量公式计算CO_2排放量方法探讨

根据国内100余种典型煤种、煤质工业分析和元素分析数据资料,通过煤质低位发热量分别计算含碳量,其结果与煤质元素分析含碳量值进行对比,发现煤质低位发热量与含碳量之间呈正相关性。因此,采用煤质低位发热量推导出含碳量计算公式无约束条件,可简捷、快速地计算煤质的含碳量,计算CO_2污染物排放量。采用物料平衡法推导出燃煤CO_2污染物排放量计算方法,是较准确的计算方法,计算结果准确、可靠,可为火电工程设计、环境保护部门监管及电厂管理人员等提供借鉴。     

发电企业电煤采购成本及燃用成本对标工作研究

阐述了发电企业电煤采购成本管理的现状,指出不同发电企业间电煤采购成本对标工作存在的突出问题。通过对电煤采购成本和燃用成本影响因素的分析与研究,提出了完善电煤采购成本对标方法和开展电煤燃用成本对标工作的建议。     

Utilization of coal fly ash in the glass-ceramic production

Manufacturing the glass-ceramic has been proposed as a useful choice to recycle coal fly ash from power plants. In this work, a glass-ceramic of SiO2-Al2O3-Fe2O3-CaO family was synthesized by mixing 90 wt% of coal fly ash, from a power plant in west of China, with Na2O, and then melted at 1350 degrees C. The ceramization of the obtained glass was carried out at 770 degrees C for 2h. Esseneite and nepheline were found present as major crystal phases. The produced glass-ceramic exhibited good chemical durability as well as good mechanical properties. The toxicity characteristic leaching procedure (TCLP) method found that the glass-ceramic was non-hazardous.     

矿井伤亡事故分析和预防对策

归纳、统计了双鸭山矿务局历史上发生的矿井事故率和造成的生产损失，对各类事故率和产生根源进行了分析，提出了安全预防对策。     

膏体管道输送阻力损失研究

采用山东新汶矿业集团孙村煤矿的煤矸石及其附近火电厂的粉煤灰和其它一些添加剂制成了5种膏体。在对膏体充填力学参数基础上，运用ANSYS软件中的FLOTRAN CFD计算流体动力学分析模块对膏体管道输送进行了数值模拟分析。分析结果与实际相符合，从而证明了ANSYS软件是膏体管道输送的阻力损失计算的有效工具。