ROCK BOLT CONSTRUCTION METHOD

To provide a rock bolt construction method capable of smoothly and accurately performing rock bolt driving work and preventing accidental dropping of a washer.SOLUTION: A rock bolt construction method comprises a washer holding means installation step of installing washer holding means 8 on a tip si...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUO TSUTOMU, AZEDAKA SHINICHI, TANAKA YUSUKE, SAKAGAMI TETSUJI, SHINGU SHINYA, AOKI KOICHI, TEZUKA HITOSHI, SETOGUCHI HIROSHI, KOMATSU KAHORI, MURAKAMI ANNA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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