KNEADING METHOD OF AIR-MIXED PUMPING SOIL AND SAND AND SOLIDIFICATION AGENT

摘要

PROBLEM TO BE SOLVED: To knead soil and sand and a solidification agent without using a kneading device such as a mixer by supplying the solidification agent to soil and sand pumped by air mixing pumping for repeating of formation and collapsing of soil and sand plug. ;SOLUTION: When compressed air is supplied for soil and sand S transmitted through a pipe passage 3 from a high concentration dredger or the like, the upper part of the accumulated soil and sand S are rippled to form the plug of the soil and sand S so as to block the pipe passage 3. Next, a current meter 13 detects the plug of the soil and sand S to transmit a detection signal G to the motor 10 of a weigher 9. Next, after the detection signal G is received, the weigher 9 is operated after specified time elapse, a solidification agent T is supplied to the inside of a hopper 8 and the inside of the pipe passage 3 from a centrifugal impeller 5. When the passage of the plug of the soil and sand S is detected by the current meter 13, after specified time elapse, the weigher 9 is stopped. Furthermore, the soil and sand S and the solidification agent T are kneaded in the inside of the pipe passage while repeating the formation and collapse of the plug. Thereby a kneading device can be unneeded.;COPYRIGHT: (C)2000,JPO