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Ground excavating method and capable of DCM deep excavation having low center of gravity
Ground excavating method and capable of DCM deep excavation having low center of gravity
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机译：重心低的能够进行DCM深基坑的地面开挖方法
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摘要
The present invention relates to a DCM shaft center low center of gravity ground excavation method and apparatus, which comprises an auger drive unit, a gear box fixedly installed on the lower side of the auger drive unit, A plurality of protruding keys protruding symmetrically on the inner surface of the hollow portion of each of the plurality of main shafts so as to face each other so that the upper and lower surfaces of the box are in a penetrated state; The plurality of connecting rods being connected to the upper ends of the plurality of connecting rods and inserted into the hollow portions of the plurality of main shafts, A plurality of extensible rods connected to each other, a plurality of excavation rods connected to a lower end of each of the plurality of connecting rods, And a plurality of cement pool supplying swivels for supplying cement pulps supplied from the outside to the extensible rods, the connecting rods and the excavating rods, respectively, A plurality of pneumatic supply swivels each provided with one swivel for cement pool supply at the upper end of each of the plurality of extensible rods, an air tank frame for supplying pneumatic pressure to each of the plurality of pneumatic supply swivels, A plurality of cement pool supply hoses protruding from one side and supplied from the outside and a plurality of support holes for supporting one main pneumatic supply hose are formed, And the pneumatic pressure supplied from the outside is supplied to the air tank frame through one main pneumatic supply hose, and the pneumatic pressure supplied to the air tank frame is supplied to a plurality of cushion pole sweepers Supplied to each of a plurality of pneumatic supply swivels via a pneumatic supply hose It is composed, A plurality of intermediate connecting rods each having a ring groove formed between the lower end of the plurality of stretching rods and the upper end of the plurality of connecting rods are connected to each other one by one, When the auger drive unit is moved upwards to the upper side of a plurality of the extensible rods connected to the upper end of the intermediate connecting rod, the clamping device installed at the lower end of the auger drive unit The auger drive unit can be safely raised to the upper side of the plurality of stretching rods by catching the ring groove formed in the intermediate connecting rod, And a plurality of cement pool outlets for discharging the cement pool supplied through the plurality of cement pool supply swivels to the excavated soil layer by the excavation operation of a plurality of excavation rods are formed in each of the plurality of excavation rods connected to the lower ends of the plurality of connection rods And one pneumatic discharge port for discharging the pneumatic pressure supplied through the plurality of pneumatic supply swivels in a direction opposite to the cement pool discharge port is formed at the lower end of each of the plurality of excavation rods, A plurality of check valves for blocking the inflow of grass or soil are provided one by one by means of a plurality of excavation rods that perform excavation operations in the ground below deeper than the vertical length of the vertically fixed leads on the ground The excavated soil layer simultaneously discharges pneumatic pressure together with the cement paste The pneumatic pressure is distributed to the excavated soil so as to be mixed evenly with the soil layer excavated by the cement paste so that the load due to the soil earth load is less likely to be applied to the plurality of excavation rods, So that the soft ground can be improved.
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