Undisturbed soil core sampling method using a small underwater robot for the survey of environmental radioactivity in lakes
| Project/Area Number |
26550044
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental impact assessment
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| Research Institution | Fukushima University |
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Principal Investigator |
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| Research Collaborator |
CANETE Luis
KAMIO Shuta
ANZAI Kahori
MANH Dam Quang
TANAKI Mizuki
KANNO Ryo
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 環境放射能調査 / 底質 / 水中ロボット / 柱状採泥 / 層構造保存 / 不攪乱 / 水中グライダー / モジュール構造 |
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| Outline of Final Research Achievements |
The developed undisturbed soil core sampling method is performed by driving the bottom end of a stainless steel pipe into the soil and drawing it after closing the top end of the pipe. The force required to penetrate and draw the pipe can be reduced by using pipes with thin walls which enables small underwater robots that can only generate a small amount of propeller thrust force to perform the sampling. The actual sampling device uses a valve to automatically open and close the top end of the pipe. Experiments conducted at Inwashiro Lake confirm the proposed sampling method works well. We also developed a thruster that maximizes the propeller thrust force by optimizing motor and propeller matching. Furthermore, a patch antenna that increases the reliability of radio communication between modules was also developed.
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Report
(4 results)
Research Products
(11 results)
