水库水情自动测报系统开发研究

以某水库综合自动化系统为研究背景,经过对多种监控系统方式的比较和从工程的具体实际情况出发,研究采用了集散式监控系统（分布式控制系统）,以局域网的形式把各测控站、分中心站经光纤链路组成网络,开发了相应的监控系统软件,目前该系统已经建设完成,运行安全、稳定,产生了良好的经济效益和社会效益。     

Solving the problem at the source: Controlling Mn release at the sediment-water interface via hypolimnetic oxygenation

One of the primary goals of hypolimnetic oxygenation systems (HOx) from a drinking water perspective is to suppress sediment-water fluxes of reduced chemical species (e.g., manganese and iron) by replenishing dissolved oxygen (O₂) in the hypolimnion. Manganese (Mn) in particular is becoming a serious problem for water treatment on a global scale. While it has been established that HOx can increase sediment O₂ uptake rates and subsequently enhance the sediment oxic zone via elevated near-sediment O₂ and mixing, the influence of HOx on sediment-water fluxes of chemical species with more complicated redox kinetics like Mn has not been comprehensively evaluated.This study was based on Mn and O₂ data collected primarily in-situ to characterize both the sediment and water column in a drinking-water-supply reservoir equipped with an HOx. While diffusive Mn flux out of the sediment was enhanced by HOx operation due to an increased concentration driving force across the sediment-water interface, oxygenation maintained elevated near-sediment and porewater O₂ levels that facilitated biogeochemical cycling and subsequent retention of released Mn within the benthic region. Results show that soluble Mn levels in the lower hypolimnion increased substantially when the HOx was turned off for as little as ∼48 h and the upper sediment became anoxic. Turning off the HOx for longer periods (i.e., several weeks) significantly impaired water quality due to sediment Mn release. Continual oxygenation maintained an oxic benthic region sufficient to prevent Mn release to the overlying source water.     

Analysis of triclosan and 4n‐nonylphenol in Colombian reservoir water by gas chromatography‐mass spectrometry

In this work were determined triclosan and 4n‐nonylphenol in water from a reservoir that is used to provide water to a purification plant in an important city in Colombia. The analytical methodology was validated using solid‐phase extraction and analysis by gas chromatography‐mass spectrometry (GC‐MS). The analysis by GC‐MS showed good linearity in the range of 0.05–5 μg/L for both compounds. Recoveries from 79 to 109% and standard deviations of 2.5–7.7 for low concentrations and from 3.8 to 9.6 (n = 5) for high concentrations were obtained for both compounds. In Colombia, this is the first time that these compounds have been analysed in water supplying of a drinking water treatment plant. The validated method was applied to the analysis of 27 samples collected in August 2010 in 11 locations from the reservoir and in the influent and effluent of the drinking water treatment plant. In total, seven samples were found to contain triclosan.     

长治县陶清河水库应急专项除险加固工程

以陶清河水库工程为例,介绍了水库的地理位置、区域环境等,针对工程现场检查发现的输水洞渗水严重的问题,对其原因进行了剖析,确立了解决方案,并阐述了具体的施工技术,指出及时排除输水洞存在的各种病险,对提高大坝的安全性、耐久性具有重要意义。     

地震波散射问题研究进展

对在P波、SV波和SH波入射下的局部不规则场地,如圆弧形凹陷地形、圆弧形沉积谷场地,地下衬砌隧道和地下双洞室造成的散射以及由此产生的放大及其他危害作用做了大致的概括。     

圆弧形沉积谷地对平面SV波三维散射解析解

采用大圆弧面来模拟半空间表面,利用波函数展开法和有限项Fourier展开技术,在频域内给出了圆弧形沉积谷地对平面SV波三维散射的一个解析解。并以此解答为基础,进一步分析了入射波频率和入射角度对圆弧形沉积谷地场地反应的影响。研究表明,圆弧形沉积谷地对平面波的三维散射比二维散射更加复杂;将三维散射问题分解为两个主平面入射的简化处理存在较大的误差;入射波的频率和入射角度对圆弧形沉积谷地场地反应均有重要影响。     

汽车用储气筒的结构优化设计与分析

作为汽车零部件的重要组成部分,储气筒起着储存压缩空气以及刹车制动的作用。从工作压力、材料选择和外形设计等方面对储气筒进行分析,利用ANSYS有限元软件对储气筒壁厚进行优化设计。在此基础上,指出采用最佳壁厚的圆筒形铝合金储气筒能达到汽车轻量化的设计要求。     

裂缝性低渗砂岩油藏渗吸驱油效果的影响因素分析

由于裂缝性油藏储集空间物理性质的复杂性和特殊性,渗吸效果控制着低渗透裂缝性水驱开发动态与开发效果。本文在分析油藏渗吸驱油机理基础上,对影响油藏渗吸驱油效果的各种因素进行了综合分析,为制定裂缝性油藏合理的渗吸注水开发方式提供了理论依据。     

鄂尔多斯盆地镇北地区三叠系延长组长8油组储层特征

鄂尔多斯盆地镇北地区延长组长8油层段是盆地重要的储集层之一。通过储层岩石学、储层物性、孔隙结构等方面对储层特征进行深入研究,研究结果表明,储层岩石类型主要为中细粒长石砂岩和岩屑长石砂岩,成分成熟度低,结构成熟度中—高;发育粒间孔隙、溶蚀孔隙、晶间孔等孔隙类型,喉道以中细喉—细喉为主。岩石物性总体较差,属低孔、低渗砂岩储层。研究结果对油田开发具有重要的指导意义。     

RMT测井解释方法研究

油藏监测仪(RMT)是目前各种碳氧比测井仪器中计数率和测量精度最高的一种新型的测井仪器。本研究从碳氧比能谱测井基本原理出发,对RMT测井仪器结构、测井解释基本原理、数据记录格式以及测井解释方法进行了深入的研究,通过解编RMT测井记录的原始数据曲线,采用寻峰、加权最小二乘法等数学物理方法对原始谱进行了谱漂移校正,建立了RMT测井求解饱和度的数学模型。并在FORWARD测井解释平台下对现场RMT实测资料的处理结果与取心及其他测试结果的比较分析,表明所建立的解释模型和处理方法切实可行,测井解释符合率高。