A Study of Large Manmade-Slope Protection Method for Erosion in Large Farm Development.

大型农场开发中侵蚀的大型人造边坡防护方法研究。

• 批准号: 63560224
• 负责人: KATO Makoto
• 金额: $ 1.22万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63560224/
• 关键词: Masa Soil; Slope Stability; Blind Culvert; Gravel Mat; Permeability; Rain Water; Cuting; Banking; 農地造成; 法尻; 地下水探査; 地温探査法; 地下水流脈; 盛切リエ; 降雨浸透; テンションメ-タ-; 砂モデル; 現地測定; シュミレ-ション; 不飽和土; 有限要素法; パソコン通信; シュミレーション; スェーデン式コーン貫入試験

This is a field study dealing with a civil engineering technique used a farm land development.Especially, main purposes in this study were a stability of large man-made slope and its erosion.This study was done in the test field at the suburbs of KOURIYAMA CITY in FUKUSHIMA prefecture, in the ABUKUMA mountains.There are many springs around the foot of the hills. Usually, when a farm land was made by cutting down the hills and by banking into the valley, blind culvert was constructed on the bottom of the valley for drainage the rain water from the hillbody. But its blind culvert was not useful. It is the reason that man-made slope was easy to break welling out rain water at the point of slope toe where the cutting and banking slope surface was crossed.The following characteristics of 「MASA SOIL」 was measured.The following conclusion was led from the results of the field test and the field investigations,(1) Gravel mat on the slope toe was very useful.(2) Blind culvert should be constructed on the foot Masa hill for catching the discharge rain water.(3) Undisturbed Masa soil's permeability has 10^<-3>-10^<-4>cm/sec,disturbed Masa soil's permeabiliy has 10^<-4>-10^<-5>cm/sec.

这是一项针对土木工程技术使用农田开发的现场研究。尤其是，这项研究的主要目的是大型人造坡度及其侵蚀的稳定性。这项研究是在福岛市库里亚山市郊区的测试领域进行的，在福库岛县，在abukuma Mountains山上。通常，当砍伐山丘和靠近山谷的山地建造农场时，在山谷的底部建造了盲人涵洞，以排水，以排水。但是它的盲目涵洞没有用。这是一个原因很容易在斜坡脚趾点上切出雨水，在该斜坡上划过剪切和弯曲的斜坡表面。测量了“ MASA土壤”的以下特征。以下结论是从现场测试的结果和现场调查的结果和野外调查的结果中得出的，（1）在坡度上造成了非常有用的降落式雨水。未受干扰的MASA土壤的渗透性具有10^<-3> -10^<-4> cm/sec，干扰的Masa土壤的渗透性具有10^<-4> -10^<-5> cm/sec。