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

永磁体和磁传感器沉降测量系统的研制

• 批准号: 04555122
• 负责人: KUSUMI Harushige
• 金额: $ 3.46万
• 依托单位: Kansai University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04555122/
• 关键词: Settlement with Each Layr; Alluvium Deposit; Diluvium Deposit; Permanent Magnet; Magnetic Senser; Site Measurment Method; Artificial Island; 現場計測工法; 磁気センサー; 層別沈下計測; 沖積粘土層; 洪積粘土層; 希土類磁石; ネガティブフリクション; 磁石; 深度別沈下計; 層別沈下計

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.

当建造人工岛时，它们会受到表面沉降的约束，这是合并层的结果总和，其中许多似乎在特征上有所不同。当这些地层柔软而厚，或重载大量时，很难估计最终将发生多少定居点，以及一段时间内会发生多长时间。为了使估计准确，必须首先确定每个Layr的结算特性。为此，作者根据两个独特的原则研究了一种测量解决方案的新方法。一个原理是将永久磁体应用为沉降指标，另一个是用于检测磁场的半导体，磁电阻元件的开发。事先进行观察，磁铁被迫进入地球，并以适当的深度和间隔将油插孔推出孔孔。小型AIDAT磁电阻元件对于该方法的实用性和效率至关重要。该项目制造的磁性设备似乎在测量沉降方面非常有效。通过以下优点，可以通过其他方法区分其可能的方法1。可以在一个孔孔中设置许多在可选深度和相对间隔下的假设点。2。测量的准确性为1 mm。3。半永久性观察是可能的和预期的。4。该设备可以轻松，经济地制造，体重和紧凑。在现场检查中，整个过程始终运行，并取得了非常有利的结果。从结果中，必须考虑到如此庞大的回收量会导致稀释液层的巩固。

项目成果

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)

Harushige Kusumi：“使用磁力沉降计进行分层沉降测量和沉降预测的研究”第 49 届日本土木工程师学会学术讲座摘要第 3 部分（A）（1994 年）。

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)

H.Kusumi 和 K.Taniguchi：“使用磁沉降系统测量人工岛各层沉降”。

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" 土木学会第49回年次学術講演会概要集. 第3部(A). 14-15 (1994)

Harushige Kusumi：“使用磁力沉降计进行分层沉降测量和沉降预测的研究”日本土木工程师学会第 49 届年度学术会议摘要第 3 部分（A）（1994 年）。

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)

Keiichiro Taniguchi：“使用磁性深度沉降计测量年轻开垦土地的沉降”第 28 届土壤工程研究报告会论文集 219-220 (1993)。

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)

K.Taniguchi、H.Kusumi、K.Tsuzimoto 和 K.Kimura：“使用磁沉降系统测量新填海地区的沉降”。