A study on shot-vegetation-spray using fly ash without seeding foundation

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  • 石炭灰のリサイクル資材を安定剤として用いた植生基材吹付工の地盤工学的安定性
  • セキタンバイ ノ リサイクル シザイ オ アンテイザイ ト シテ モチイタ ショクセイ キザイ フキツケコウ ノ ジバン コウガクテキ アンテイセイ

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Abstract

The slope stability mechanism of the shot-vegetation-spray method using fly ash as stabilizer discharged from thermal power stations without seeding foundation such as wire net was studied. Based on the classified destruction mechanism, the soil property tests and the horizontal loading tests were performed. The slope slide phenomena were evaluated on the digitization. From triaxial compression tests (UU tests), the cohesion C=23 * 10-3N/mm2, the angle of shear resistance φ= 26.4 degrees in the age of material of one day and C=5.2 * 10-3N/mm2, φ= 19.2 degrees in the age of material of five days were obtained. From the tests, the friction resistance 2.27 ∼ 4.42 * 10-4N/mm2 in the age of material of 0 day and 3.50 ∼ 6.91 * 10-7N/mm2 in the age of material of 14 days were obtained. Using the property test results and the soil properties by the references, the slope stability was studied. The results of this study suggested that, the shot-vegetation-spray method using fly ash without seeding foundation can be applied to the slope of up to 1:0.6inclination, if the natural ground slope is stable.

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