Development of Informed Construction, Management and Maintenance of Dams of Agricultural Use

2000年，主要研究了以下3个课题。(1)水库地下水位引起的滑坡预报技术的发展；(2)中型三轴压缩试验设备的研制，使其能够在任何土体的真实/非饱和土体条件下进行力学试验；(3)力学模拟，利用裂隙模型对地基物理参数进行更好的估计。在执行课题(1)时，采用了模拟水库周边边坡滑坡的室内模型试验，用立体相机记录和分析了滑体的详细运动，并利用图像处理技术进行了分析。在执行课题(2)时，主要致力于研制能够独立测量孔隙水和水蒸气压力的三轴水箱。研制的仪器能够处理直径15 cm、高度30 cm的非饱和试件。2001年，TDR(时域反射仪)被引入测量体积含水率，并将其应用于课题(1)。他们给出了一些有用的结果。还介绍了声发射测量系统，并将其用于研究岩石或混凝土试件破坏时的声学特性。2002年，引入了离心式加载装置，研究了化学物质在循环土工材料(在这种情况下是自来水厂污泥)中的渗透特性。并对课题(1)、(2)、(3)近3年的研究结果进行了提炼。

In 2000, following major 3 topics were investigated. (1)Development of predicting technology for landslides due to up and down or water table in reservoirs, (2)Manufacturing of the medium size tri-axial compression test equipments which enable mechanical test under real/unsaturated soil condition of any earth structures, (3)Mechanical simulation getting much better estimation of the physical parameters in foundation using cracked model. In executing topic (1), the laboratory model test was used, which resembles the slope slide in circumference of a reservoir, and the detailed movement of a sliding mass was recorded and analyzed by stereoscopic camera, and they were analyzed by picture image processing techniques. While in executing the topic (2), the main efforts were devoted to manufacture the tri-axial cell which is able to measure pore water and vapor pressure independently. The developed apparatus is able to treat an unsaturated test sample of 15cm diameter, 30cm height.In 2001, TDR (time domain reflectmetry) instruments were introduced to measure the volumetric water content and this was applied to the topic (1). They gave some useful results. Also the AE (acoustic emission) measuring system was introduced, and it was used to investigate acoustic characteristics accompanied by failure of rock or concrete test samples.In 2002, the centrifugal loading apparatus was introduced to investigate the infiltration properties of chemicals into the re-cycled geo-materials (in this case, water plant sludge). And the results during the past 3-years of topics (1), (2) and (3) were abstracted.