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1994 Fiscal Year Final Research Report Summary

Developmental Study of Settlement Measuring System using Permanent Magnets and Magnetic Sensor

Research Project

Project/Area Number 04555122
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 基礎・土質工学
Research InstitutionKansai University

Principal Investigator

KUSUMI Harushige  Kansai University, Fac.of Eng., Asso.Prof., 工学部, 助教授 (70158880)

Co-Investigator(Kenkyū-buntansha) 木村 宏一  (株)機動技研, 研究員
INOUE Hiroyuki  Kidougiken Co.Ltd., Researcher, 研究員
NISHIDA Kazuhiko  Kansai University, Fac.of Eng., Prof., 工学部, 教授 (20067581)
KIMURA Hiroshi  Kidougiken Co.Ltd., Reseracher
Project Period (FY) 1992 – 1994
KeywordsSettlement with Each Layr / Alluvium Deposit / Diluvium Deposit / Permanent Magnet / Magnetic Senser / Site Measurment Method / Artificial Island
Research Abstract

When articial island are constructed, they are subject to surface settlement, which is the resultant sum of the consolidation strata, many of which seem differ in character. When these strata are soft and thick, or heavily loaded, it becomes very difficult to estimate how much settlement will eventually take place, and over how long a period. For the estimate to be accurate, the settlement characteristics of each layr must be first determinded.
For this purpose, the authors have investigated a new method of measuring settlement, based on two unique principles. One principle is the application of a permanent magnet as an indicator of settlement, and the other is the exploitation of a semiconductor, magnetro resistance elements for detecting the magnetic fields. In advance with the observation, the magnets are forced into the earth, being pushed out through the bore hole casing by the oil jack at suitable depths and intervals. The small aized magneto resistance element is essential to the practicality and efficiency of this method.
The magnetic apparatus manufactured for this project appears to be very effective in measuring settlement. The method that it makes possible is distinguished over other methods by the following advantages.
1. Many obsevation points, at optional depths and relative intervals, can be set in one bore hole.
2. Accuracy of measurement is of the order of 1 mm.
3. Semi-permanent observation is possible and anticipated.
4. The apparatus can be manufactured easily and economically, and is light in weight and compact.
In the field examinations, the entire process always ran smoothly and has produced very favorable results.
From the results, it must be conciuded that reclamation on so large a scale gives rise to consolidation in the diluvium strata.

  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 楠見 晴重: "改良型磁気層別沈下計の開発に関する研究" 関西大学工業技術研究所「エコテクノロジー研究報告書」. vol.1. 52-72 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 谷口敬一郎: "磁気層別沈下計による人工島の層別沈下計測に関する研究" 平成5年度土木学会関西支部年次学術講演集. III-32-1-III-32-2 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 谷口敬一郎: "磁気深度別沈下計による若令埋立地の沈下計測" 第28回土質工学研究発表講演集. 219-220 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 楠見 晴重: "磁気式沈下計による人工島の層別沈下計測に関する研究" 関西大学工業技術研究所「エコ・テクノロジー研究報告書」. vol.2. 26-47 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 楠見 晴重: "磁気式沈下計による沖積粘土層の層別沈下計測" 平成6年度土木学会関西支部年次学術講演概要集. III-33-1-III-33-2 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 楠見 晴重: "磁気式沈下計による海底地盤の層別沈下計測について" 第90回物理探査学会学術講演会論文集. 479-481 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 楠見 晴重: "磁気式沈下計による層別沈下計測ならびに沈下予測に関する研究" 第49回土木学会年次学術講演概要集. 第3部(A). 114-115 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Shibano: "Land settlement surveying system" TRENCHLESS ASIA95, SINGAPORE. 2. 6. 1-2. 6. 5 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 楠見 晴重: "磁気式沈下計によって得られる実測値に基づいた将来沈下予測の手法と予測精度の評価について" 関西大学工業技術研究所「エコテクノロジー研究報告書」. Vol.3. 31-45 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Kusumi and K.Taniguchi: "Development of improved Settlement Measuring System using Magnetic Sensor." Study Report of Ecotechnology, Industry Institute of Kansai University. Vol.1. 57-72 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Taniguchi, H.Kusumi, S.Nishimura and K.Kimura: "Measuring of Each Layr Settlement of Artificial Island using Magnetic Settlement System." Proceedings of Japan Society of Civil Engineers at Kansai Branch. III-32-1-III32-2 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Taniguchi, H.Kusumi, K.Tsuzimoto and K.Kimura: "Measurment of Settlement of with Younger Reclamational Ground using Magnetic Settlement System." Proceedings of Japan Society of Soil Mechanics and Foundation Engineering. Vol.28. 219-220 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Kusumi and K.Taniguchi: "Measuring of Each Layr Settlement of Artificial Island using Magnetic Settlement System." Study Report of Ecotechnology, Industry Institute of Kansai University. Vol.2. 26-47 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Kusumi, S.Nishimura, J.Okuno and K.Nishida: "Measuring of Each Layr Settlement of Alluvial Clay using Magnetic Settlement System." Proceedings of Japan Society of Civil Engineers at Kansai Branch. III-33-1-III33-2 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Kusumi, K.Nishida, J.Okuno and S.Nishimura: "Measuring of Each Layr Settlement of Sea Bottom Ground using Magnetic Settlement System." Proceedings of Society of Exploration Geophysicits of Japan. Vol.90. 479-481 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Kusumi, S.Nishimura, J.Okuno and K.Nishida: "Measuring of Each Layr Settlement using Magnetic Settlement System and it's Estimation." Proceedings of Japan Society of Civil Engineers. Vol.49, No.3, (A). 114-115 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Shibano, K.Miyamoto and H.Kusumi: "Land Settlement Surveying System." Proceedings of Trenchless Asia'95, Singapore. 2,6,1-2,6,5 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Kusumi: "Predict Method of Settlement based on Actual Measurment by Magnetic Settlement System and it's Estimation." Study Report of Ecotechnology, Industry Institute of Kansai University. Vol.3. 31-45 (1995)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1996-04-15  

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