ROCK MASS EVALUATION METHOD AND ROCK MASS EVALUATION DEVICE
To quantitatively evaluate an entire rock mass.SOLUTION: A rock mass evaluation method comprises the steps of: dividing an image P of a range of a rock mass being an evaluation object into a crack image showing a portion where a crack is generated and a non-crack image showing a portion where the cr...
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| Zusammenfassung: | To quantitatively evaluate an entire rock mass.SOLUTION: A rock mass evaluation method comprises the steps of: dividing an image P of a range of a rock mass being an evaluation object into a crack image showing a portion where a crack is generated and a non-crack image showing a portion where the crack is not generated; dividing the image P into a plurality of regions R; calculating a spacing of the cracks generated in the regions R for each region R; sorting the respective regions R to a corresponding grade in the plurality of grades according to the calculated spacing; obtaining a crack spacing trend curve indicating a trend of the cracks generated in the entire rock mass on the basis of the number of regions R sorted to each grade; and obtaining a representative crack spacing I that represents the spacing of the cracks generated in the entire rock mass from the crack spacing trend curve.SELECTED DRAWING: Figure 5
【課題】岩盤全体の評価を定量的に行う。【解決手段】岩盤評価方法は、評価対象となる岩盤の範囲の画像Ｐを、亀裂が生じている部分を示す亀裂画素と、亀裂が生じていない部分を示す非亀裂画素と、に区分するステップと、画像Ｐを複数の領域Ｒに分割するステップと、領域Ｒ内において生じている亀裂の間隔を領域Ｒ毎に算出するステップと、算出された間隔に応じて複数の領域Ｒを複数の階級のうち該当する階級へとそれぞれ振り分けるステップと、各階級に振り分けられた領域Ｒの数に基づいて、岩盤全体に生じている亀裂の傾向を示す亀裂間隔傾向曲線を求めるステップと、亀裂間隔傾向曲線から岩盤全体に生じている亀裂の間隔を代表する代表亀裂間隔Ｉを求めるステップと、を含む。【選択図】図５ |
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