Research on the Performance Evaluation, Function Diagnosis Technique of the Agriculture Water Supply Facilities

本课题旨在阐述农业供水设施作为基础设施存量的功能诊断、控制和保存的性能评价技术。本研究结果如下所示。●通过对长期服役的农业灌渠混凝土的调查，对中和的预测和诊断技术进行了检验。●研究了因冻害导致结垢变质的评价技术，研究了超声脉冲法冻害诊断技术。●采用三轴试验方法，对无扰动、密度相同的灌水塘体力学特性的老化进行了研究。●采用6种不同性质的底泥，考察了其理化性质、粘土矿物元素含量、强度及渗透率。●对正在进行改良工程的灌溉池进行了比阻电调查，并对改良部分和未改良部分的比阻分布进行了比较，评价了适用体的抗渗性能。●研究了超声脉冲法估算混凝土裂缝深度方程的制定背景和适用条件，导出了确定振子和接收机最佳安装位置的条件方程。●利用GIS技术掌握某农业灌溉渠水网的分布情况，对农业灌溉渠的LCC计算进行了检验。

This research project was enforced for the purpose of explaining the performance evaluation technique for the function diagnosis, control, preservation of the agriculture water supply facilities as an infrastructure stock. The result of this research is shown in the following.●The prediction of the neutralization and the examination of the diagnosis technique were done from a result of investigation with agriculture irrigation canal concrete passed in a long time service.●The evaluation technique of the scaling which is deterioration due to the freezing damage was examined, and a freezing damage diagnosis technique by the ultrasonic pulse method was examined.●The aging of mechanical characteristic of the irrigation pond body was examined by triaxial test the sample which the non-disturbance and density the same.●The physical and chemical character, the amount of element and strength of clay mineral, and permeability were examined by using the bottom mud of six different properties.●Ratio resistance electric investigation was carried out for the irrigation pond where improvement construction was being done with the leak due to decaying, and impervious property of the applicable body was evaluated by comparing the ratio resistance distribution of the improvement part and the un-improvement part.●The formulation background and the applicable condition of the estimating equation for the crack depth of concrete by ultrasonic pulse method were examined, and the conditional equation to decide the best installation position of oscillator and receiver was derived.●The LCC computation of the agriculture irrigation canal was examined by grasping the distribution conditions of the waterway network at one agriculture irrigation canal by GIS.