Water leakage control by using vibratory roller on a dry-seeded rice field in southwestern Japan
作者： Koichiro Fukami , Toshifumi Mukunoki , Keiko Nakano , Naoki Matsuo , Takashi Okayasu
DOI: 10.1016/J.STILL.2016.09.011
关键词: Paddy field 、 Geotechnical engineering 、 Porosity 、 Soil structure 、 Seeding 、 Acceleration 、 Compaction 、 Volume (thermodynamics) 、 Leakage (electronics) 、 Materials science
摘要: Abstract Dry-seeded rice cultivation is an effective low-cost method in Japan, but preventing water leakage from cultivated fields remains a challenge. Here we assessed the efficiency of using vibratory roller dry-seeded field for leakage. The tests were conducted at two different soil-water contents (WC: 32 and 39%) before compaction. We measured acceleration response vibrating by micro-electro mechanical system (MEMS) accelerometer, determined volume rapid capacity tester. analyzed changes soil structure micro-focused X-ray CT scanner. all resulting data to identify any correlation. observed that was sufficiently prevented when prior compaction, moisture content 39%. shape pores could efficiently prevent flatter than inefficiently compacted soil. In addition, total porosity decreased, small-sized pore fraction increased. vibration significantly increased with decrease Thus, addition assessing rollers reducing leakage, our suggest it some extent possible estimate prevention effect roller.
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