JP6455990B2 - 発破ズリの評価方法、発破ズリの評価システム - Google Patents
発破ズリの評価方法、発破ズリの評価システム Download PDFInfo
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- 238000005422 blasting Methods 0.000 title claims description 105
- 238000011156 evaluation Methods 0.000 title claims description 28
- 239000002245 particle Substances 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 31
- 238000003384 imaging method Methods 0.000 claims description 19
- 239000002344 surface layer Substances 0.000 claims description 19
- 239000011435 rock Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 description 19
- 239000008187 granular material Substances 0.000 description 6
- 238000010008 shearing Methods 0.000 description 6
- 238000012937 correction Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011158 quantitative evaluation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Description
本発明の発破ズリの評価方法によって発破ズリの評価を行う際には、まず、岩盤の発破時に生じる切羽の発破ズリの表面形状をデジタルカメラを用いて撮像する(撮像工程S1)。例えば、図2に示す模式図のように、露天掘り鉱山の採掘現場では、鉱石を含む岩盤Rを所定の厚み範囲が崩落するように発破を行い、発破ズリSが形成される。この発破ズリSを、例えば発破時の崩落方向と直角な側面方向から撮像を行う。
なお、本実施形態では説明を明瞭にするために断面(線)を用いて説明しているが、実際には2次元データ上で反転させている。よって、反転線は反転面となる。
S…発破ズリ
M…砕石機
R…岩盤
Claims (7)
- 岩盤の発破時に生じる切羽の発破ズリの表面形状をデジタルカメラを用いて撮像する撮像工程と、
前記撮像工程で得られた発破ズリの撮像を用いて、発破ズリの3次元立体モデルを生成する3次元立体モデル生成工程と、
前記立体モデル生成工程で得られた3次元立体モデルより表面形状を示す数値表層モデルを生成する数値表層モデル生成工程と、
前記数値表層モデル生成工程で得られた数値表層モデルの表面形状を反転させた反転像を生成する反転像生成工程と、
前記反転像生成工程で得られた反転像を平準化させた平準化像を生成する平準化像生成工程と、
前記反転像と前記平準化像との差分を、任意の基準値に基づいて二値化した二値化データを生成し、この二値化データに基づいて、発破ズリの平均粒度を算出する粒度算出工程と、を備えたことを特徴とする発破ズリの評価方法。 - 前記切羽の周囲の測量データに基づいて、前記数値表層モデルのスケール情報の補正を行う補正工程を更に備えたことを特徴とする請求項1記載の発破ズリの評価方法。
- 前記数値表層モデルに基づいて、前記発破ズリ全体の形状を評価する発破ズリ評価工程を更に備えたことを特徴とする請求項1または2記載の発破ズリの評価方法。
- 前記粒度算出工程では、前記二値化データの凹部の面積を平均粒度とすることを特徴とする請求項1ないし3いずれか一項記載の発破ズリの評価方法。
- 前記撮像工程では、前記発破ズリを側面方向から撮像を行うことを特徴とする請求項1ないし4いずれか一項記載の発破ズリの評価方法。
- 前記撮像工程では、無人航空機を用いて前記発破ズリの上空から撮像を行うことを特徴とする請求項1ないし5いずれか一項記載の発破ズリの評価方法。
- 岩盤の発破時に生じる切羽の発破ズリの表面画像を撮像するデジタルカメラと、前記表面画像から発破ズリの3次元立体モデルを生成し、前記立体モデルから数値表層モデルを生成し、前記数値表層モデルの反転像および反転像から生成した平準化像との差分に基づいて発破ズリの平均粒度を算出する画像処理手段と、を備えたことを特徴とする発破ズリの評価システム。
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