| 摘要 |
PROBLEM TO BE SOLVED: To provide spray apparatus without complicating spray work of a spray material and preventing a working environment from deteriorating by dust . SOLUTION: The spray apparatus includes a spray nozzle 10 for spraying the spray material C such as concrete, mortar or the like, and an atomizing nozzle 20 for jetting a mist water W around the spray material C sprayed from the spray nozzle 10, wherein when the spray work is carried out to the inner wall face of an excavated tunnel, the spray material C is jetted from the spray nozzle 10 in a condition where the mist water W is jetted into the surroundings. COPYRIGHT: (C)2006,JPO&NCIPI
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