Study on Geotechnical Properties of Local Soils and Economical Land Reclamation

当地土壤岩土特性及经济土地复垦研究

基本信息

  • 批准号:
    03302055
  • 负责人:
  • 金额:
    $ 7.1万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Co-operative Research (A)
  • 财政年份:
    1991
  • 资助国家:
    日本
  • 起止时间:
    1991 至 1993
  • 项目状态:
    已结题

项目摘要

Various local soils exist in Kyusyu and Okinawa, and both technical and enviromental problems occur during the land reclamation. The purpose of this project is to make the fill and dike safety, and to preserve the soil erosion under the construction. The results are summarized as follws.1. In order to evaluate the stress and pore water pressure acting on the circular cylindrical failure surface of slope with respect to sliding, the new finite element method that complements the classical slice method was proposed, and applied for practical analysis successfuly.2. The cement stabilization through mixing was one of the possible use for improving weak calcareous sediments in coral reef areas. The effect of cement mixing on strength and deformation behavior was significant in sand with fine passing 0.075mm sieves than those with no fine. Void cement ratio law for design of concrete mix proportion could be applied to the evaluation of strength of artifically cemented calcareous sand deposits.3. A stabilized box foundation method for reinforcing soft ground was proposed. This new procedure was a method to make box-shaped vertical walls by overlapping cement colums in the ground on which structures were to be constructed. The loading test results of the model fondation on clay were found to agree well with the theoretical values of bearing capacity of the foundation.4. The prevention of reddish soil loss in Kunigami Maaji area is very important in the light of enviromental conservarion of the coral reef region in Okinawa. The surface covering with a membrain made from a chemical stabilizer was a useful method to control the soil loss in a cutting surface of ground during reclamation.
九州和冲绳当地土壤种类繁多,在开垦土地过程中出现了技术和环境问题。这项工程的目的是为了确保填筑和堤防的安全,并防止施工过程中的水土流失。研究结果总结如下:1。提出了一种新的有限元分析方法,对经典条分法进行了补充,并成功地应用于实际分析。水泥拌和稳定是改善珊瑚礁地区软弱钙质沉积物的可能用途之一。在细粒通过0.075 mm筛分的砂土中,水泥掺入对强度和变形性能的影响显著高于未细粒的砂粒。混凝土配合比设计中的空灰比规律可应用于人工胶结钙质砂土的强度评价。提出了加固软土地基的加固方法--加固箱基法。这种新工艺是一种通过在要建造结构的地面上重叠水泥柱来制作箱形垂直墙的方法。模型地基荷载试验结果与地基承载力理论值吻合较好。从冲绳珊瑚礁地区环境保护的角度来看,防止库尼格玛吉地区的红土流失是非常重要的。在复垦过程中,用化学稳定剂制成的膜覆盖地表是一种有效的控制开挖地表土壤流失的方法。

项目成果

期刊论文数量(26)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
新城,俊也: "セメント安定処理したさんご石灰質砂の強度変形特性" 農業土木学会論文集. 166. 15-23 (1993)
Shinshiro,Toshiya:“水泥稳定珊瑚钙质砂的强度-变形特性”日本农业土木工程师学会会刊 166. 15-23 (1993)。
  • DOI:
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    0
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三輪 晃一: "シラス混入によるクロボク土の圧縮性の改良" 農業土木学会論文集. 161. 11-17 (1992)
Koichi Miwa:“通过混合银鱼改善黑北土壤的压缩性”日本农业土木工程师学会会刊 161. 11-17 (1992)。
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    0
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高山昌照: "セメント系固定剤による改良地盤の掘削" 農業土木学会論文集. 162. 123-129 (1992)
Masaaki Takayama:“使用水泥基固定剂进行改良地面的挖掘”,日本农业土木工程师学会汇刊 162. 123-129 (1992)。
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    0
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Takayama Masateru: "Excavation of Soft Ground Fortified with a Cement Hrdening Agent" Jpn.Soc.Irri.Drai.Recla.Engi.162. 123-129 (1992)
Takayama Masateru:“用水泥硬化剂加固软土的开挖”Jpn.Soc.Irri.Drai.Recla.Engi.162。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
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  • 通讯作者:
Sinjo Toshiya: "Prevention of Reddish Soil Loss in the Kumigami Maaji Area by Membrane of Chemical Stabilization" Jpn.Soc.Irri.Drai.Recla.Engi.166. 98-104 (1993)
Sinjo Toshiya:“通过化学稳定膜防止 Kumigami Maaji 地区的红土流失”Jpn.Soc.Irri.Drai.Recla.Engi.166。
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    0
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NANBA Naohiko其他文献

NANBA Naohiko的其他文献

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{{ truncateString('NANBA Naohiko', 18)}}的其他基金

PERMEABILITY AND COMPRESSIBILITY OF MIXED SOIL COMPOSED OF VOLCANIC COHESIVE SOIL AND SHIRASU
火山粘性土与Shirasu混合土的渗透性和压缩性
  • 批准号:
    62560240
  • 财政年份:
    1987
  • 资助金额:
    $ 7.1万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

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膨胀粘土矿物形成机制阐明及“Shirasu”悬崖崩塌预测研究
  • 批准号:
    15540462
  • 财政年份:
    2003
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以天然资源“Shirasu”为骨料的混凝土的实用化研究
  • 批准号:
    15360232
  • 财政年份:
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RESEARCH ON UNSATURATED INFILTRATION CHARACTERISTIC OF RAIN WATER AT IN-SITU ON EARTHQUAKE COLLAPSE OF SHIRASU SLOPE
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九州南部Shirasu边坡失稳预测系统
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考虑地震不同降雨引起的抗剪力和入渗流变化的Shirasu边坡崩塌预测试验研究
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    11650518
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