Research of Improving Technology for lmigation Embankments with Environmental Friendly and Earthquake Resistant Design at Low Cost

1.为评价试验路堤的强度特性，对鹿儿川市路堤改良砂质淤泥土进行了中空圆柱体扭转试验和三轴压缩试验。在此基础上，进行了大型三轴水池和大型土槽的渗透试验，以了解土工格栅对土壤颗粒运动的抑制作用。采用新的灌溉堤防改良技术在鹿儿川市托盖克池塘修建了试验堤防，通过测量和开挖观测，取得了令人满意的性能和性态。利用沸石凝灰岩和水泥浆研制了一种净化复合材料，对其净化性能和净化机理进行了评价。将使用该材料的面板应用于试验路堤，以获得足够的净水性能。通过4种类型的模型振动台试验，研究了灌溉堤防溢洪道的抗震性能。通过权值、截面形状和配筋三个方面对模型B和D的加固效果进行评价，模型B和模型D在响应和残馀位移方面表现出较好的性能。对溢洪道进行了三维有限元动力响应分析，以认识到不同溢洪道材料的反应位移分布差异较大，以及PVC等小刚度材料的竖向反应位移较大。

1. The hollow cylindrical torsional test and the triaxial compression test on improved sandy mud soil of the lbgeikepond in Kakogawa city were conducted to evaluate strength characteristics for design of a test embankment. Then, the permeability tests using large triaxial cell and large soil tank were performed to recognize the preventing effect of geogrid on soil particle movements.2. A test embankment was constructed using the new improving technology for irrigation embankments iat the Togeike-pond in Kakogawa city Satisfying enough performance and behavior were observed from measurement and excavation observation.3. A purification composite material was developed with zeolitic tuff and cement slurry to evaluate the performance and mechanism of purification. The panels used this material were applied to the test embankment to obtain sufficient performance of water purification.4. Model shaking table tests were conducted on 4 types to observe earthquake resistant performance on spillway for irrigation embankments. As a result of evaluating firm points of weight, section shape and reinforcing, models B and D with reinforcement showed good performance on response and residual displacement5. The three dimensional FEM dynamic response analysis of spillway was performed to recognize the large difference for response displacement distribution from different spillway materials and to note the large vertical response displacement for materials with small rigidity such as PVC.