Design of signal detective system of the soil resistivity measurement;
土壤电阻率测量的信号检测系统设计
The influence of soil resistivity and coating defects on IR drop error in cathodic protection(CP)potential measurement was studied by theoretical methods.
理论分析土壤电阻率和涂层缺陷电阻等参数对埋地管道阴极保护电位测量时IR降误差的影响 ,建立IR降电阻因子计算模型 ,并用实验数据验证 ,此外 ,还讨论了IR降误差的工程预测方法 。
Considering the influence of inductive magnetic field among operating lines,resistivity of soil and sag of transmission lines on transmission line parameters,the influential elements are quant.
由此得出以下结论:多回运行线路间的磁场作用会使线路阻抗值变大;不同的土壤类型及湿度、温度等环境因素会影响土壤电阻率值,进而影响零序阻抗值;在长距离线路中,将考虑弧垂的地面平均高度作为导线对地高度来计算零序电容会大大减小与实测值的误差。
After measuring the resistivity of soils and performing continuous monitoring of underground stray current in th.
对该区电泵井进行地下土壤电阻率测试及现场连续监测发现,地下不同深度存在杂散电流,电泵井套管腐蚀是土壤腐蚀及杂散电流腐蚀综合作用的结果。
The soil causticity is evaluated from the aspects of pH value,Cl hydronium content,mineralization degree and soil resistance,the soil causticity level of Cangzhou and Hengshui region are measured off,to provide based foundation for material chosen and anti-corrosion measures chosen of earthing network of Cangzhou and Hengshui region.
通过对沧州、衡水地区部分变电站接地网开挖检查和土壤分析,初步掌握了沧州、衡水部分代表性变电站接地网腐蚀情况,以pH值、氯离子含量、矿化度(全盐含量)、土壤电阻率等因素来综合评价土壤腐蚀性,划分了沧州、衡水地区土壤腐蚀性等级,为沧州、衡水地区接地网选材和防腐措施选用提供了基础依据。
Development of portable soil EC meter with Bluetooth and PDA;
基于蓝牙与PDA的便携式土壤电导率测试仪开发
In order to solve the problem of low accuracy and poor real time of traditional measuring instrument for soil EC, and according to the principle of measuring soil EC, NI Corporation graphical programming language LabVIEW and DAQ board were used to acquire soil temperature and soil EC, etc.
该文针对传统土壤电导率测量仪器准确性低、实时性差等问题,根据土壤电导率的测量原理,采用NI公司的虚拟仪器开发平台LabVIEW和数据采集卡,采集土壤温度和电导率等参数,设计了一种土壤电导率测量仪器,通过简单的操作便可测量不同温度下的土壤电导率,并实现数据的显示、保存、打印和网络传输等功能。
The environmental difference between city gas pipeline and long distance gas pipeline is compared, the limitations of current methods for measuring the soil resistance rate, and the possibility of judging bacterial corrosion are analyzed, and some appropriate improvement measures are put forward.
比较了城镇燃气输配管道与长输管道的周边环境的差别,分析了现行的测取土壤电阻率和判断细菌腐蚀可能性的方法的局限性,提出了相应的改进措施。
Application of Reducing Resistance Measures for Transmission Line through High Soil Resistivity Area
输电线路高土壤电阻率地区降阻措施的应用
Development of automatic acquiring system for network soil resistivity
网络化土壤电阻率参数采集系统研制
Application of electrolysis in grounding grid with high soil resistivity
电解地极在高土壤电阻率接地网中的应用
Method of composite earthing network layout for light rail transit in areas of high soil resistivity;
高土壤电阻率地区轻轨综合接地网设置方法
Development of LQG-1 Soil Resistivity Automatic Measuring Device
LQG-1型土壤电阻率远程自动测量装置研制
Study on the Grounding Design and Resistance Reduction Techniques of Substations in the High Soil Resistivity Region
高土壤电阻率地区变电站接地设计与降阻技术研究
Experiment on fast-measurement of soil moisture based on additional resistance method
附加电阻法快速测定土壤含水率的试验
soil - determination of the specific electrical conductivity
土壤-电导性比率的测定
water content of soil
土壤含水量（土壤含水率）
Research of Measurement Technique on Soil Water Content Using a High Frequency Capacitance Based on an Additional Resistance
附加电阻法高频电容土壤水分测试技术研究
Correlation between soil electrical conductivity and winter wheat yield
冬小麦土壤电导率与其产量的相关性
Research on Concrete Resistivity and Reiforced Concrete Steel Corrosion Rate
混凝土电阻率及钢筋腐蚀速度的研究
RESEARCH ON RELATIONSHIPS BETWEEN WATER CONTENT AND RESISTIVITY OF EARTHEN RUIN WALLS
土遗址墙体含水量与电阻率关系研究
Evaluation of physicochemical process in stabilized expansive soils using electrical resistivity method
电阻率法评价膨胀土改良的物化过程
THE APPLICATION OF THE HIGH-DENSITY RESISTIVITY METHOD TO THE PROSPECTING FOR BAUXITE DEPOSITS
高密度电阻率法在铝土矿床上的应用
Study of Resistance Calculation and Design of Grounding Grid on Nonuniform Soil;
非均匀土壤下接地网电阻计算与设计研究
Influence of Soil Moisture Variation on Line Grounding Resistance
土壤湿度变化对线路接地电阻的影响研究
Design of Time Domain Reflectometry for Application of Soil Moisture and Bulk Electrical Conductivity Measurements
测试土壤含水率和电导率的时域反射仪系统