Design and development of a simple and easy-to-measure in-situ permeability test to determine hydraulic conductivity of soil.

设计和开发一种简单且易于测量的原位渗透性测试,以确定土壤的水力传导率。

基本信息

  • 批准号:
    12556036
  • 负责人:
  • 金额:
    $ 5.44万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 财政年份:
    2000
  • 资助国家:
    日本
  • 起止时间:
    2000 至 2002
  • 项目状态:
    已结题

项目摘要

It is well recognized that in-situ measurements of saturated and unsaturated moisture properties of soil are essential for accurate prediction of contaminant transport as well as water movement in soil such as agricultural field, compacted soil, natural slope and landfill. In the Research Project field and laboratory investigations are conducted to develop an in-situ permeability test that has a superior feature that an equipment to measure data as well as a procedure to determine the soil permeability is quite simple. The in-situ permeability test investigated consists of a Guelph pressure infiltrometer (GPI) method combined with a Guelph well permeameter (GWP) method, both of which have been proposed by the researchers of Guelph University, Canada. The GPI and GWP methods determine a field-saturated hydraulic conductivity of soil Kfs based on a measurement of constant-head steady infiltration into a soil from a single ring inserted a small depth into the soil and from a well bored a … More small depth into the soil, respectively. Kfs can describe well water movement in soil because many natural and man-made infiltration processes result in significant air entrapment within the soil.In the first and second years of the Research Project, a practical accuracy and an applicability of the GPI and the GWP methods were examined by a field investigation, a laboratory soil bin test and a numerical analysis. If is found out that the GPI and the GWP methods determine accurately and effectively Kfs in plane and along depth of soil, respectively. Also is found that a statistical property of the soil permeability can be determined,effectively by the GPI method because it does not require a tedious time to determine Kfs at a site. The in-situ permeability test investigated was applied to sand sediment soil formed by a debris flow of soil. From the test results and a permeability test of the sand sediment soil additionally conducted in the laboratory, an integrated procedure is effectively proposed to determine the hydraulic permeability of the sand sediment which is characterized by a inclusion of large gravel and cobbles into the sand soil. In the last year of the Research Project, the in-situ permeability test was extended so that it was able to determine unsat urated moisture properties of soil as well as the hydraulic conductivity of soil. Both an infiltration rate from the GPI ring or the GWP well and a moisture content of soil were measured during the constant-head infiltration with time, and were numerically back-calculated to estimate soil parameters which defined optimally unique relationships between moisture content, negative pressure head and unsaturated hydraulic conductivity of soil. Less
土壤饱和和非饱和水分特性的原位测量对于准确预测农田、压实土、自然边坡和垃圾填埋场等土壤中的污染物运移和水分运动是非常重要的。在研究项目中,进行了现场和实验室调查,以开发一种原位渗透性测试,该测试具有上级特征,即测量数据的设备以及确定土壤渗透性的程序非常简单。现场渗透率测试包括圭尔夫压力渗透仪(GPI)方法与圭尔夫井渗透仪(GWP)方法相结合,这两种方法均由加拿大圭尔夫大学的研究人员提出。GPI和GWP方法确定了土壤的田间饱和导水率Kfs,其依据是从插入土壤较浅深度的单环和从钻好的钻孔测量土壤中的恒定水头稳定入渗。 ...更多信息 分别深入到土壤中。Kfs可以描述井水在土壤中的运动,因为许多自然和人为的入渗过程导致显着的空气截留在soil.In研究项目的第一和第二年,GPI和GWP方法的实际精度和适用性进行了检验,通过现场调查,实验室土槽试验和数值分析。结果表明,GPI法和GWP法分别能准确、有效地确定平面内和沿着深方向的Kfs。还发现,可以确定的土壤渗透性的统计特性,有效地通过GPI方法,因为它不需要一个繁琐的时间来确定KFS在一个网站。对泥石流形成的砂质土进行了原位渗透试验研究。从试验结果和渗透性试验的砂沉积土另外在实验室进行,有效地提出了一个完整的程序来确定的水力渗透性的砂沉积物,其特征是包含大砾石和卵石到砂土。在研究项目的最后一年,现场渗透性测试得到了扩展,以便能够确定土壤的非饱和水分特性以及土壤的水力传导率。在恒水头入渗过程中,测量了GPI环或GWP井的入渗速率和土壤含水率随时间的变化,并进行了数值反算,以估计土壤参数,从而确定了土壤含水率、负压水头和非饱和导水率之间的最优唯一关系。少

项目成果

期刊论文数量(226)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
森井俊広: "プレッシャーインフィルトロメータ法を用いた土の透水性の原位置測定"第35回地盤工学研究発表会発表講演集. 1. 1293-1294 (2000)
Toshihiro Morii:“使用压力渗透仪法进行土壤渗透率的现场测量”第 35 届岩土工程研究会议论文集 1. 1293-1294 (2000)。
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    0
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Takeshita, Y., Yagi, K., Morii, T. and Inoue, M.: "Inverse analysis of in situ permeability test data for determining unsaturated soil hydraulic properties"Proceedings of the Asian Conference on Unsaturated Soils, Singapore. 445-449 (2000)
Takeshita, Y.、Yagi, K.、Morii, T. 和 Inoue, M.:“用于确定非饱和土壤水力特性的原位渗透性测试数据的逆分析”亚洲非饱和土壤会议记录,新加坡。
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    0
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Morii, T., Mori, T. and Matsumoto, S.: "In-situ measurement and evaluation of hydraulic conductivity of sand sediments soil mixed with gravel"Bulletin of Faculty of Agriculture, Niigata University. 54(1). 45-52 (2001)
Morii,T.,Mori,T.和Matsumoto,S.:“砂沉积物与砾石混合的土壤的水力传导率的现场测量和评估”新泻大学农学部通报。
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    0
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Takeshita, Y., Yagi, K., Morii, T. and Inoue, M.: "Detarmination of soil hydraulic properties of unsaturated sandy soil using in situ permeability tests"Journal of Groundwater Hydrology. 44(1). 21-33 (2002)
Takeshita, Y.、Yagi, K.、Morii, T. 和 Inoue, M.:“利用原位渗透性试验测定非饱和砂土的土壤水力特性”地下水水文学杂志。
  • DOI:
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  • 影响因子:
    0
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  • 通讯作者:
Morii, T.: "Determination of hydraulic conductivity of sand sediment soil taking an inclusion of gravel and cobbles in to account"Bulletin of Faculty of Agriculture, Niigata University. 55(2) (In print.). (2003)
Morii, T.:“考虑到砾石和鹅卵石的沙沉积土壤的水力传导率的测定”新泻大学农学部通报。
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MORII Toshihiro其他文献

STUDY ON THE LONG-TERM CAPILLARY INCREASE BLOCKING EFFECT OF CAPILLARY BARRIER GROUND USING CRUSHED SHELLS PARTICLES
碎贝壳颗粒毛细管屏障接地的长期毛细增阻效应研究

MORII Toshihiro的其他文献

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{{ truncateString('MORII Toshihiro', 18)}}的其他基金

Feasibility study on practical applicability of capillary barrier of soil to shallow land waste repository.
土壤毛细管屏障对浅层土地废物处置库实用性的可行性研究
  • 批准号:
    24658201
  • 财政年份:
    2012
  • 资助金额:
    $ 5.44万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Study on practical application of capillary barrier of soil to water harvesting and its effective use.
土壤毛细管屏障在集水中的实际应用及其有效利用研究。
  • 批准号:
    22380127
  • 财政年份:
    2010
  • 资助金额:
    $ 5.44万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Toward a safe and secure geo-environment reinforced by soil stabilization using lime admixture.
通过使用石灰混合物稳定土壤,打造安全可靠的地质环境。
  • 批准号:
    22658072
  • 财政年份:
    2010
  • 资助金额:
    $ 5.44万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Design and development of a riprap work having resistivity against overtopping flow on soil embankment.
土堤抗漫溢流抛石工程的设计与开发。
  • 批准号:
    14560196
  • 财政年份:
    2002
  • 资助金额:
    $ 5.44万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Research on hydraulic and mechanical design of flowthrough rockfill dams.
流水式堆石坝水力与机械设计研究
  • 批准号:
    11660238
  • 财政年份:
    1999
  • 资助金额:
    $ 5.44万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Measurement and estimation of unsaturated moisture properties of compacted soils and its application to analyses of embankment dams.
压实土非饱和水分特性的测量和估计及其在堤坝分析中的应用。
  • 批准号:
    03660244
  • 财政年份:
    1991
  • 资助金额:
    $ 5.44万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
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