DISPOSAL OF VOLCANIC ERUPTED MATERIALS

摘要

PURPOSE: To prevent a pyroclastic flow disaster of an erupting volcano (like Mt. Hugen), secure safety of works, rapidly and safely remove sediment of erupted materials, prevent an avalanche of earth and rocks disaster, efficiently collect erupted materials as cost-effective sand and aggregate sources, apply these material s for a concrete structure having favorable characteristics, and make use thereof for environmental maintenance. ;CONSTITUTION: A lava dome or a crater is gradually cut by means of a pinpoint explosion or the like. Next, an unmanned bulldozer, a water tower, etc., are remotely controlled by use of a cableway 5 and a gondola held by a collor of mountain neck and fitted so as to be two-dimensionally movable. Next, the sediment 8 are conducted to a dam-shaped structure as fluidizing materials while classifying rocks and discharged safely in a well-managed condition to an elevated tailrace 13. A hole is opened at the bottom of tailrace 13 to immediately collect gravels and aggregates and make use thereof in multi-purpose. After removal of the sediment, a permanent water reservoir dam 10 for disaster prevention is constructed.;COPYRIGHT: (C)1995,JPO