Control technique and system for run-off sand from agricultural land

农田径流沙治理技术及系统

• 批准号: 07556056
• 负责人: ANASE Makoto
• 金额: $ 8.77万
• 依托单位: Tokyo University of Agriculture, NODAI Resource Environment Study Center
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07556056/
• 关键词: soil and sand outflow control; minute particle outflow control; vortex tube; Abashiri, Hokkaido; Miyako Island, Okinawa; permeable setting basin; minute particle absorption; infiltlation; 浸透性沈砂池

The soil erosion becomes an environment problem with the earth scale with making a desert at present. Especially, the explosive increase of the population becomes pressure at the developing nation and the result of the forest felling, the agricultural land development causes ground erosion and the ground outflow becomes a big problem. Soil and sand outflow is taken up as the environment problem in addition to the agricultural land disaster.Therefore, it grasps the actual state of the soil and sand outflow from the agricultural land and to establish the restraint control system has very important meaning.In this study, it examined each measure to exclude bed load and floating sand in the fault grain part, it came out on the pollution watercourse and it made restraint a system.It implemented the following study in the given period. (1) Technical limit of the method of construction in the past to the floating sand which becomes the factor of muddy water. (2) The plan and the design of the permeable settling basin method of construction which is based on the spot investigation in the domestic related area. (3) The water reason design for the examination building and the preparation of the spot building and the investigation. (4) The examination of the purge function of under-drainage and the sandy filtration layer. (5) The physical characteristic and the sinking characteristic experiment of the topsoil in the examination field. (6) The promotion operation of the glavitational sinking of settling basin by under-drainage. (7) The material experiment of the under-drainage filtration layer. (8) The under-drainage ability decline and the measure examination of it. It made a manual about the soil and sand outflow control method of construction from above results.

目前水土流失和荒漠化已成为地球尺度的环境问题。特别是人口的爆炸性增长给发展中国家带来了巨大的压力，森林砍伐、农业用地开发造成的水土流失成为一个大问题。水土流失是除农田灾害外的一个环境问题，因此，掌握农田水土流失的实际状况，建立约束控制体系具有十分重要的意义。针对污染河道的特点，提出了污染河道的治理对策，并将其作为一种制度加以约束，在一定时期内进行了以下研究。(1)以往施工方法的技术局限性使流沙成为浑水的因素。(2)在对国内相关地区进行实地调研的基础上，对透水沉沙池的施工方法进行了规划和设计。(3)考试楼的水文设计及现场建筑物的准备和勘察。(4)地下排水和桑迪滤层的吹扫作用试验。(5)试验田表层土的物理特性和沉降特性试验。(6)沉池重力沉降的暗排促沉施工。(7)下排水过滤层材料试验。(8)根据以上结果，提出了施工过程中控制土、砂流失的方法。

项目成果

三原真智人,安富六郎: "土壌懸濁流による閉塞を考慮した有孔暗渠管の通水孔構造" 農業土木学会論文集. 177. 17-22 (1995)

Machito Mihara、Rokuro Yasutomi：“考虑土壤悬浮流堵塞的穿孔涵洞管的流孔结构”日本农业土木工程学会汇刊 177. 17-22 (1995)。

三原真智人,中川英人: "寒冷化における凍結融解と土壌侵食、土壌構造の変化が雨滴による侵食過程に与える影響" 土壌の物理性. 73. 25-30 (1996)

Machito Mihara、Hideto Nakakawa：“冷却过程中的冻融和土壤侵蚀，以及土壤结构变化对雨滴侵蚀过程的影响”《土壤物理性质》73. 25-30 (1996)。