| 摘要 |
A high pressure jet grouting device generally employed with a portable stand comprised of a vertically adjustable shelf forming a platform for attaching an air motor, reduction gearing box and a releasable right angle gear box. High pressure air is pumped to the air motor and a grouting pump, the air pressure is used to turn the right angle gear and a rotatable pipe inside a casing pipe. The grouting material under pressure from the air compressor is pumped through a hose to a swivel connection on the end portion of a rotating pipe to inject the grout into the ground from a spray nozzle located at the opposite end of the rotating pipe inserted in the ground. A rotating roller bearing is provided between casing pipe and the rotating pipe. The device is small and does not require a heavy drill rig as the drilling operation is separately performed from the grouting process.
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