南沙河流域来水量分析计算

南沙河是鞍山市城市河流,目前正在进行河道综合整治,拟修建多个蓄水工程。每个工程都必须进行水资源论证,来水量分析计算是水资源论证中最重要的组成部分之一,不同保证率的来水量和来水过程计算成果与立山站降水一径流深相关关系图及降水一径流历年过程线图的变化趋势基本一致,所以来水量的计算是合理的。     

深圳河湾污水系统研究

深圳河湾污水截排工程投资超过人民币5亿元。工程方案坚持以科学的发展观为指导，将节水与防污相结合，将发展循环经济作为方案研究的出发点与落脚点，对深圳河湾流域的污水处理尾水排海、污水资源化、水体生态修复等作出了长远规划。     

Transient Rainfall-Runoff Loadings to a Partial Exfiltration System: Implications for Urban Water Quantity and Quality

Modification of rainfall-runoff processes by urban infrastructure and anthropogenic activities impacts receiving waters and the surrounding terrestrial environment. Infiltration–exfiltration systems such as a partial exfiltration reactor (PER) when loaded by transient sheet flow have the potential to attenuate the impact of both the quantity and quality of urban runoff. These in situ systems are subject to highly variable water quality and quantity while functioning under variably saturated flow conditions. To improve the understanding of field-scale PER performance as a rainfall-runoff unit operation and process, a two-dimensional (2D) numerical model was used to simulate the effluent hydrograph and water content profiles under transient hydraulic loadings. Richard’s equation was applied in the 2D model using parameters estimated from laboratory experiments and hydrographs measured for an in situ PER. The temporal dynamics of the water content illustrated the ability of the PER to lower peak flow, redistribute volume, and attenuate temporal aspects of the inflow hydrograph. Results demonstrated the role of the PER to attenuate runoff water quantity, while also providing water quality improvements, as illustrated for suspended solids and dissolved Cu. Simulation of historical events for different surrounding soils illustrated the critical role of surrounding soil conditions on PER performance. While the PER demonstrated water quantity attenuation benefits for design storms (1, 2, 5?year return periods), results also illustrate how a given PER design for clayey soils conditions can be limiting for intense events. Evaporation was a dominant mechanism for the drying process in the PER upper layer; with a residual moisture content in the porous pavement layer achieved in less than 2?days in summer for Cincinnati, Ohio.     

Pollution Buildup on Road Surfaces

Samples of sediment found on an urban road in Aberdeen (Scotland) were collected by washing designated surfaces. This method, called the “wet” method, was capable of collecting sediment of the smallest particle size range that is normally left behind by traditional sampling techniques using dry vacuuming. Over 17 months (mainly on a weekly basis), 66 samples were collected and analyzed for sediment loading, particle size distribution, concentration of heavy metals (Zn, Cu, Pb, Cd) in four sediment size fractions, and several dissolved pollutants in the effluent collected from washing (NO3?,?SO42?,?PO43?,?Cl?,?F?,?NH4+, total organic carbon, total carbon). Standard statistical methods, including multiple regressions, were used to determine relationships amongst different sediment characteristics. It was found that sediment loading, as well as concentrations of Cl? and SO42?, were highest in the winter months, especially when snow was present on the road surface. It was observed that 66% of total road sediment loading was found within a 0.5 m strip next to the curb. The average sediment particle sizes found were smaller than those previously recorded in the literature. As expected, the concentrations of heavy metals were highest in the smallest particle size fraction analyzed (<63?μm), and this occurred during the summer months when less sediment was available on the street surface. The antecedent dry weather period had a very weak and negative influence on the loading rate of the smallest particle size fraction next to the curb.     

流域内森林植被对径流的影响

分析了大兴安岭地区呼玛河上游森林植被覆盖率变化对流域径流的影响。     

加速基因方法在最大流量频率曲线参数估计中的应用

基因方法是基于自然选择和自然基因机制的并行随机自适应工程模型参数全局优化估计的通用数值方法。它不限制模型结构、优化准则、被估参数的数目、约束条件等，已开始广泛用于各种工程模型的优化设计之中。文中对它的原理、步骤、特点进行初步探讨，并针对基因方法的弱点，作者提出予以改进的加速基因方法，后者在最大流量频率曲线参数估计中得到成功应用     

2003年云南金属材料与加工年评

评述了云南省在黑色金属、有色金属、稀贵金属和陶瓷材料等方面所取得的研究成果。     

基于多尺度下AR(P)耦合预测模型的应用研究

基于多尺度分析理论，运用Mallat算法和Daubeclfies小波，把时间序列分解为比原始序列更单一的细节和慨貌部分，并利用AR(P)模型能反映时间序列中邻近时刻间联系的特性，对序列分解后的部分进行拟合与预测，然后再由多尺度分析中的重构方法进行序列重构，由此建立耦合的预测模型。通过黄河青铜峡270多年(1724～1997)年径流时间序列的建模及验证，表明拟建的耦合模型与传统单一模型的预测精度相比，由50％提高到90％，可用于实际需要。     

鸡西市地表水资源量计算与分析

对鸡西市降水量、蒸发量、径流量的多年平均值及不同频率的降水量、径流量进行了分析计算。