HYDROCHEMICAL COMPONENT AND ITS DYNAMIC TRENDS OF GROUNDWATER IN THE PLAIN OF SANTUN RIVER BASIN

该文依据水文地质条件将三屯河流域平原区划分为单一结构潜水子系统和多层结构潜水 -浅层承压水子系统及深层承压水子系统。通过地下水水质简分析数据 ,分析了各地下水子系统中主要离子 ,TDS和水化学类型的特征及其变化 ,并初步讨论了地下水系统的水循环特点In accordance with hydrogeological condition, three groundwater systems are presented in the paper, they are the phreatic water systems with single-layer structure, phreatic water together with shallow confined groundwater system and deep confined groundwater with multi-layer structures in the plain of Santun river basin The component and distribution of the major ions, TDS and hydrochemical types and their variations of the above-mentioned groundwater systems are analyzed, meanwhile, the circulatory characteristics of groundwater system are discussed preliminarily九五”国家重点科技攻关项目 (96 - 91 2 - 0 1 - 0 3S

基于最大信息系数的动态加权特征融合的齿轮箱故障诊断

随着机械设备的精细化和复杂化，用于监测其运行状态的传感器数量和类型不断增多，为了能有效地将多传感器信息融合，补全时间和空间上的信息，提高传感器信息的可靠性，提出了一种基于最大信息系数的动态加权特征融合的齿轮故障诊断方法。利用小波包变换对多传感器采集到的振动信号分解到时频域；计算时频域的特征，通过最大信息系数计算各传感器的权重并以并联融合的方式对特征进行融合；将融合后的特征输入到支持向量机模型进行故障分类。实验证明，融合后的特征聚合度更好，更有利于分类；在两种转速条件下，融合后的故障诊断准确率分别达到了87.72%和99.16%，动态加权融合的诊断效果好于定权重融合的诊断效果

Study on the mechanism of infiltration and evaporation of phreatic groundwater in the planting conditions

在天山北麓昌吉地下水均衡试验场 ,选择具有代表性的作物玉米进行不同埋深条件下的模拟种植试验 ,分析研究种植条件下不同潜水埋深水平的潜水入渗补给量、潜水蒸发损耗量、土壤水储存量和作物耗水量的变化规律。研究成果对于地下水资源和土壤水资源评价以及地下水和土壤水资源的有效调控利用具有重要实用意义In the text station of the groundwater balance, located in the northern slope of Tianshan Mountain, the corn, local typical crop, is chosen to plant for the text under the conditions of the different groundwater level depth. Through the text, the infiltration and evaporation of the phreatic groundwater, the storage of the soil moisture, and the water requirement of crop are observed and analyzed. The experimentation achievements are significant for the groundwater resource evaluation, the soil moisture resources evaluation, as well as controlling and utilizing effectively the groundwater and soil moisture.“九五”国家重点科技攻关项目的部分研究成果 ( 96 912 0 1 0 3S