WALL SURFACE STRENGTH ESTIMATION METHOD, EVALUATION METHOD OF NATURAL GROUND PROPERTY, AND ELASTIC WAVE PROBING SYSTEM

To evaluate properties of a natural ground by estimating uniaxial compressive strength of the natural ground rapidly and safely.SOLUTION: A wall surface strength estimation method for estimating uniaxial compressive strength of a natural mountain near a surface to be investigated includes an estimat...

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Hauptverfasser:	OKUZAWA KOICHI, TANIGUCHI NOBUHIRO, NIIMURA AKIRA, KURAHASHI SHINRI, SUZUKI KENICHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LARGE UNDERGROUND CHAMBERS MEASURING MINING PHYSICS SHAFTS TESTING TUNNELS
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Zusammenfassung:	To evaluate properties of a natural ground by estimating uniaxial compressive strength of the natural ground rapidly and safely.SOLUTION: A wall surface strength estimation method for estimating uniaxial compressive strength of a natural mountain near a surface to be investigated includes an estimation expression acquisition process of for acquiring a strength estimation expression for estimating uniaxial compressive strength of a natural mountain on the basis of a surface wave speed, a speed acquisition process for acquiring a surface wave speed of surface waves generated by applying shock to the surface to be investigated, and a strength estimation process for estimating the uniaxial compressive strength on the basis of the surface wave speed and the strength estimation expression.SELECTED DRAWING: Figure 1 【課題】迅速かつ安全に地山の一軸圧縮強度を推定し、地山性状を評価することである。【解決手段】調査対象面近傍の地山の一軸圧縮強度を推定する壁面強度推定方法であって、表面波速度に基づいて地山の一軸圧縮強度を推定する強度推定式を取得する推定式取得工程と、前記調査対象面に衝撃を付与することで発生する表面波の表面波速度を取得する速度取得工程と、前記表面波速度と前記強度推定式に基づいて、前記一軸圧縮強度を推定する強度推定工程と、を備える。【選択図】図１